Browse AMR Genes
Explore antimicrobial resistance genes from the literature
Explore antimicrobial resistance genes from the literature
Van ligase;glycopeptide resistance gene cluster
Overview
| Protein Change | Nucleotide Change | Mechanism | Organism | Resistance To | Database | Validation Status |
|---|---|---|---|---|---|---|
| E112K | - | - | Enterococcus spp. | vancomycin | Reslit | Candidate |
| Allele | Database | Papers | Drug Classes | Organisms | Countries | Years | Sequence Accession | Protein Accession |
|---|---|---|---|---|---|---|---|---|
| vanA | Card Database | 1 | - | Enterococcus faecium | - | - | M97297.1 | AAA65956.1 |
| VanA | Card DatabaseReference Gene CatalogReslit | 355 | vancomycin, teicoplanin +2 | Enterococcus faecalis +98 | Belgium, Spain, The Netherlands, Finland, France, Brazil, Europe|North America|Asia, England, Colombia, United States, New Zealand, Costa Rica, Pennsylvania, Denmark, Serbia, Norway, Korea, England|Wales, New York|New Jersey|California|Montana|Texas|Canada|Nigeria, Europe, Germany, India, New York|Pennsylvania, United States|Japan|Canada|Spain|New Zealand|Denmark|U.S.|U.K.|Boston, Minas Gerais|Brazil, Michigan, Malaysia, Belgium|Spain|Italy|Germany, Iran, Alaska|USA, Canada, Michigan, USA, United States|Colombia, The Netherlands|France|Brazil, Michigan|Illinois|North Carolina, Portugal, Global, Hyderabad, south India, south India, South Korea, western Kansas, Pakistan, Turkey, Warsaw, Ontario|Canada, Netherlands|Spain|Germany|Australia, China, Denmark|Europe, Ontario, Hong Kong, Poland, North-East India, Florida, South Western Nigeria, Egypt, China|Canada|UK, New York metropolitan area, Nigeria, China|Russia|Mongolia, South Africa, Germany|Danube River, Delta State, Nigeria, Namibia, Kampala, Uganda, Scotland|Australia|England, Northwest Iran, Pakistan|United States|USA, Japan, Italy, Mexico, Lahore, South-Eastern Poland, Greece, wastewater treatment plants|Canada, Eastern Uganda, Israel, Czech Republic, Northern India, Sweden, Thailand, Nepal, Northern Xinjiang, China, Slovakia|Hungary, United States|Germany, Poland|Ukraine, Asia|Hong Kong, Europe|Asia, Saudi Arabia, Chonburi, Thailand|Thailand, Slovakia, Canada|United Kingdom|Alberta, Romania|Cluj County, North Western Romania, Tunisia, Nakhon Ratchasima Province, Thailand, Hangzhou, China, Dallas, Texas, New York State, South Africa|Poland|Czech Republic|Romania|China|United States|Spain|Germany|France|Canada|Japan|Brazil|India|Croatia|Hungary|Slovenia|Slovakia|Czechia|Austria|Puerto Rico|Switzerland|Nigeria|Norway|Finland|Denmark|Sweden|Italy|South Korea|USA|UK|Australia|New Zealand|Mexico|Russia|Turkey|Egypt|Kenya|Ethiopia|Uganda|Tanzania|Malawi|Zambia|Zimbabwe|Mozambique|Madagascar|Comoros|Mayotte|Réunion|Guadeloupe|Martinique|Saint Martin|Saint Barthélemy|French Guiana|Suriname|Guyana|Argentina|Chile|Peru|Bolivia|Paraguay|Uruguay|Colombia|Venezuela|Ecuador|Costa Rica|Panama|Nicaragua|Honduras|El Salvador|Guatemala|Belize|Alaska|Hawaii|Maine|Massachusetts|New York|California|Texas|Florida|Illinois|Pennsylvania|Ohio|Georgia|North Carolina|Michigan|Virginia|Washington|Arizona|Colorado|Connecticut|Delaware|District of Columbia|Idaho|Indiana|Iowa|Kansas|Kentucky|Louisiana|Maryland|Minnesota|Mississippi|Missouri|Montana|Nebraska|Nevada|New Hampshire|New Jersey|New Mexico|North Dakota|Oklahoma|Oregon|Rhode Island|South Carolina|South Dakota|Tennessee|Utah|Vermont|West Virginia|Wisconsin|Wyoming, Global|Guinea|Austria|Vietnam|China|Spain|Canada|Hong Kong|Malaysia|Germany|South Africa|Vancouver|Vienna, International Space Station, Beijing|China, London, Ghana, Chettia Chlef Hospital, Taiwan, United Kingdom, Bulgaria|cow milk|human breast milk, Southeast Germany, Vietnam, USA|Japan|Taiwan|NASA's-JPL SAF, Nsukka, Nigeria, Comoros|Madagascar|Maldives|Mauritius|Mayotte|Reunion Island|Seychelles|Sri Lanka|Zanzibar, Indonesia, Guangdong province, China, Edo State, Nigeria, Barcelona, north-east India, Bulgaria, Southwestern Nigeria, Bangladesh, Romania, Europe|Africa|North America|South America|Asia|Oceania, Northwest Ethiopia|Ethiopia, Arabian Gulf, China|Xinjiang, Abruzzo region, Italy, Salvador, Bahia, Europe|Northern Poland, Jordan, Kenya, Egypt|healthcare facilities 1|healthcare facilities 2|healthcare facility 1|healthcare facility 2, Calgary, Canada|Calgary, Alberta, Canada, Tianjin|Southern Karnataka, Mayurbhanj, Odisha, India|India, Switzerland, Loja, Ecuador, Sub-Saharan Africa|Middle East & North Africa|South Asia|Europe, Europe|Egypt, Free State Province, South Africa|South Africa, Europe|United States | 1993, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 | M97297|L40841 | ACP19236.1 |
| van A | Reslit | 4 | vancomycin | Enterococcus faecium +2 | Austria, Brazil, South Africa, Europe | 2014, 2015, 2021 | - | - |
| vanA/vanB | Reslit | 1 | vancomycin | Enterococcus faecalis +1 | - | 2016 | - | - |
| VAN | Reslit | 2 | vancomycin | Staphylococcus aureus +2 | Brazil | 2022, 2025 | OM949960|OM949967|OM949968|OM949990|OM952179|OM952208|OM952259|OM952437|OM952920|OM952921 | - |
| vanA-B | Reslit | 1 | vancomycin | Swine | China|United States|United Kingdom|Europe | 2022 | - | - |
| vanA/B | Reslit | 2 | glycopeptides, vancomycin | Enterococcus faecalis +1 | United States|Europe, United States|European Union | 2023 | - | - |
| van A/B | Reslit | 2 | vancomycin | Enterococcus faecium | United States | 2024, 2025 | - | - |
| van -A | Reslit | 1 | vancomycin | Enterococcus faecium | - | 2025 | - | - |
| VA | Reslit | 1 | vancomycin | Clostridioides difficile +11 | Europe|unknown | 2025 | PV843919|PV843920|PV843921|PV843922|PV843923|PV843924|PV843925|PV843926|PV843927|PV843928|PV843929|PV843930|PV843931|PV843932|PV843933|PV843934|PV843833|PV843834|PV843835|PV843836|PV843837|PV843838|PV843839|PV843840|PV843841|PV843842|PV843843|PV843844|PV843845|PV843846|PV843847|PV843848|PV843849|PV843850|PV843851|PV843852|PV843853|PV843854|PV843855|PV843856|PV843857|PV843858|PV843859|PV843860|PV843861|PV843862|PV843863|PV843864|PV843865|PV843866|PV843867|PV843868|PV843869|PV843870|PV843871|PV843872|PV843873|PV843874|PV843875|PV843876|PV843877|PV843878|PV843879|PV843880|PV843881|PV843882|PV843883|PV843884|PV843885|PV843886|PV843887|PV843888|PV843889|PV843890|PV843891|PV843892|PV843893|PV843894|PV843895|PV843896|PV843897|PV843898|PV843899|PV843900|PV843901|PV843902|PV843903|PV843904|PV843905|PV843906|PV843907|PV843908|PV843909|PV843910|PV843911|PV843912|PV843913 | - |
Comparison of direct plating and broth enrichment culture for the detection of intestinal colonization by glycopeptide-resistant enterococci among hospitalized patients.
The study identified the presence of glycopeptide-resistant enterococci (GRE) in hospitalized patients, highlighting the importance of broth enrichment culture for better detection. The vanA gene was found in E. faecium and E. faecalis, while vanC1 and vanC2 were found in E. gallinarum and E. casseliflavus, respectively.
From vanA Enterococcus hirae to vanA Enterococcus faecium: a study of feed supplementation with avoparcin and tylosin in young chickens.
The study identifies the vanA gene as responsible for glycopeptide resistance in Enterococcus hirae and Enterococcus faecium, showing that avoparcin and tylosin supplementation in chicken feed influences the selection and evolution of vanA-containing enterococci.
Enterococci with Glycopeptide Resistance in Turkeys, Turkey Farmers, Turkey Slaughterers, and (Sub)Urban Residents in the South of The Netherlands: Evidence for Transmission of Vancomycin Resistance from Animals to Humans?
The study identifies the vanA gene as a key contributor to vancomycin resistance in enterococci isolated from turkeys, turkey farmers, turkey slaughterers, and (sub)urban residents in the Netherlands, highlighting the potential transmission of vancomycin resistance from animals to humans.
vanA and vanB incorporate into an endemic ampicillin-resistant vancomycin-sensitive Enterococcus faecium strain: effect on interpretation of clonality.
The study characterizes the incorporation of vanA and vanB genes into an endemic ampicillin-resistant vancomycin-sensitive Enterococcus faecium strain, highlighting their role in vancomycin resistance.
Prevalence of Vancomycin-Resistant Enterococci in Fecal Samples from Hospitalized Patients and Nonhospitalized Controls in a Cattle-Rearing Area of France.
The study identified vanA, vanC1, and vanC2 genes as responsible for vancomycin resistance in enterococci isolated from hospitalized patients and nonhospitalized individuals in a cattle-rearing area of France.
The molecular basis of vancomycin resistance in clinically relevant Enterococci: crystal structure of D-alanyl-D-lactate ligase (VanA).
The study elucidates the molecular basis of vancomycin resistance in Enterococci by characterizing the crystal structure of VanA, a d-alanyl-d-lactate ligase that plays a critical role in the biosynthesis of cell-wall precursors resistant to vancomycin.
Enterococcus faecalis resistant to vancomycin and teicoplanin (VanA phenotype) isolated from a bone marrow transplanted patient in Brazil.
The study reports the first case of Enterococcus faecalis with the VanA phenotype resistant to vancomycin and teicoplanin in Brazil.
Antimicrobial Resistance Mechanisms and Molecular Detection Techniques
The paper discusses molecular detection methods for antimicrobial resistance, focusing on genes like mecA and blaZ, which confer resistance to beta-lactam antibiotics in staphylococci.
Excretion of vancomycin-resistant enterococci by wild mammals.
Vancomycin-resistant Enterococcus faecium (VRE) were found in wild mammals, specifically woodmice and badgers, with the vanA gene being responsible for vancomycin resistance.
First characterization of a cluster of VanA-type glycopeptide-resistant Enterococcus faecium, Colombia.
The study reports the first characterization of a cluster of VanA-type glycopeptide-resistant Enterococcus faecium in Colombia, highlighting the presence of the vanA gene responsible for high-level resistance to vancomycin and teicoplanin.
Characterization of Tn1546 in vancomycin-resistant Enterococcus faecium isolated from canine urinary tract infections: evidence of gene exchange between human and animal enterococci.
The study identified the presence of Tn1546 (vanA) responsible for high-level vancomycin resistance and Tn5281 carrying aac(6')-Ib, conferring high-level aminoglycoside resistance in a vancomycin-resistant Enterococcus faecium isolate from a canine urinary tract infection.
A clonal lineage of VanA-type Enterococcus faecalis predominates in vancomycin-resistant Enterococci isolated in New Zealand.
The study identifies the VanA-type Enterococcus faecalis as the predominant clonal lineage in vancomycin-resistant Enterococci (VRE) isolated in New Zealand, highlighting the presence of vanA, ermB, and tet(M) genes associated with glycopeptide, macrolide, and tetracycline resistance, respectively.
Impact of elements containing glycopeptide resistance genes on expression of virulence in Enterococcus faecalis peritonitis: a pilot study with rats.
The study investigated the impact of glycopeptide resistance genes vanA and vanB on the virulence of Enterococcus faecalis in a rat peritonitis model. Both vanA and vanB conferred resistance to vancomycin.
Presence of a vanA-carrying pheromone response plasmid (pBRG1) in a clinical isolate of Enterococcus faecium.
The study identified a vanA-carrying pheromone response plasmid (pBRG1) in a clinical isolate of Enterococcus faecium, which confers high-level resistance to vancomycin and teicoplanin.
Highly Conjugative pMG1-Like Plasmids Carrying Tn1546-Like Transposons That Encode Vancomycin Resistance in Enterococcus faecium.
The study identifies vanA and Tn1546 as responsible for vancomycin resistance in Enterococcus faecium, highlighting their role in the dissemination of resistance through conjugative plasmids.
Plasmid Content of a Vancomycin-Resistant Enterococcus faecalis Isolate from a Patient Also Colonized by Staphylococcus aureus with a VanA Phenotype.
The study identifies the vanA gene located on plasmid pAM830, which confers vancomycin resistance in Enterococcus faecalis and suggests potential transfer to Staphylococcus aureus.
Predominance of vanA Genotype among Vancomycin-Resistant Enterococcus Isolates from Poultry and Swine in Costa Rica.
The study identifies the vanA gene as the predominant determinant of vancomycin resistance among Enterococcus isolates from poultry and swine in Costa Rica, highlighting its widespread presence and association with high-level resistance.
Vancomycin-resistant Staphylococcus aureus isolate from a patient in Pennsylvania.
The study reports the second VRSA isolate in the United States, which contains the vanA gene responsible for vancomycin resistance and other resistance genes such as mecA, erm(A), and aac(6')-aph(2").
Occurrence, structure, and mobility of Tn1546-like elements in environmental isolates of vancomycin-resistant enterococci.
The study identifies the presence of vanA, a gene responsible for vancomycin resistance, in various environmental isolates of enterococci, highlighting the widespread occurrence of vancomycin-resistant enterococci (VRE) in different ecological niches.
Characterization of three new enterococcal species, Enterococcus sp. nov. CDC PNS-E1, Enterococcus sp. nov. CDC PNS-E2, and Enterococcus sp. nov. CDC PNS-E3, isolated from human clinical specimens.
Three new enterococcal species were characterized, with one (Enterococcus sp. nov. CDC PNS-E2) harboring the vanA gene, which confers vancomycin resistance.
Vancomycin-resistant Enterococcus faecalis in Serbia.
The study reports the first isolation of high-level vancomycin-resistant Enterococcus faecalis in Serbia, which exhibited resistance to vancomycin, teicoplanin, gentamicin, streptomycin, tetracycline, and ciprofloxacin, and carried the vanA gene.
Persistence of animal and human glycopeptide-resistant enterococci on two Norwegian poultry farms formerly exposed to avoparcin is associated with a widespread plasmid-mediated vanA element within a polyclonal enterococcus faecium population.
The study identified a plasmid-mediated vanA element associated with glycopeptide-resistant Enterococcus faecium on Norwegian poultry farms, highlighting the persistence of resistance despite the ban on avoparcin.
Vancomycin-resistant enterococcal bacteremia in a hematology unit: molecular epidemiology and analysis of clinical course.
The study identified the vanA gene as the primary cause of vancomycin resistance in Enterococcus faecium isolates from patients with bacteremia in a hematology unit.
Characterization of Vancomycin-Resistant Enterococcus faecium Isolates from Broiler Poultry and Pig Farms in England and Wales.
The study identified the vanA gene as the primary determinant of vancomycin resistance in Enterococcus faecium isolates from poultry and pig farms in England and Wales.
First nosocomial outbreak of vancomycin-resistant Enterococcus faecium expressing a VanD-like phenotype associated with a vanA genotype.
Use of a multiplex molecular beacon platform for rapid detection of methicillin and vancomycin resistance in Staphylococcus aureus.
The study presents a multiplex molecular beacon platform for the rapid detection of methicillin (mecA) and vancomycin (vanA) resistance genes, as well as the lukF gene encoding the Panton-Valentine leucocidin in Staphylococcus aureus.
Occurrence and Relatedness of Vancomycin-Resistant Enterococci in Animals, Humans, and the Environment in Different European Regions.
The study identified the vanA gene as a key factor in vancomycin resistance among enterococci in Europe, highlighting its prevalence in animal and human isolates.
Glycopeptide resistance vanA operons in Paenibacillus strains isolated from soil.
The study identifies vanA operons in Paenibacillus strains that confer resistance to glycopeptide antibiotics such as vancomycin and teicoplanin. These operons show similarities to those found in enterococci.
Validation of VITEK 2 version 4.01 software for detection, identification, and classification of glycopeptide-resistant enterococci.
The study validated the VITEK 2 version 4.01 software for detecting, identifying, and classifying glycopeptide-resistant enterococci, including the accurate detection of vanA, vanB, vanC1, and vanC2 genotypes.
Vancomycin-resistant Enterococcus faecium clone in swine, Europe.
The study identified a vancomycin-resistant Enterococcus faecium clone carrying the vanA gene, which confers resistance to glycopeptides, and the erm(B) gene, which confers resistance to erythromycin. Additionally, two Spanish isolates carried the aph(3')-IIIa gene, which provides resistance to kanamycin and streptomycin.
Synergism between beta-lactams and glycopeptides against VanA-type methicillin-resistant Staphylococcus aureus and heterologous expression of the vanA operon.
The study characterizes the vanA operon responsible for glycopeptide resistance in VanA-type methicillin-resistant Staphylococcus aureus strains, demonstrating its functional expression and the synergistic effect of combining beta-lactams with glycopeptides.
Pheromone-responsive conjugative vancomycin resistance plasmids in Enterococcus faecalis isolates from humans and chicken feces.
The study identifies vancomycin resistance plasmids pSL1 and pSL2 in Enterococcus faecalis isolates from humans and chicken feces, which carry multiple resistance genes including vanA, ermB, aph(3')-IIIa, ant(6')-Ia, and aac(6')-aph(2').
Emergence of vancomycin resistant Staphylococcus aureus (VRSA) from a tertiary care hospital from northern part of India.
The study reports the emergence of vancomycin-resistant Staphylococcus aureus (VRSA) and vancomycin-intermediate S. aureus (VISA) in northern India, highlighting the increasing prevalence of glycopeptide resistance in clinical isolates.
High-level vancomycin-resistant Staphylococcus aureus isolates associated with a polymicrobial biofilm.
The study identifies vanA, tet(S), and tet(U) as key genes contributing to vancomycin and tetracycline resistance in VRSA isolates, highlighting the role of plasmid-mediated gene transfer in the emergence of multidrug-resistant Staphylococcus aureus.
Resistance to glycopeptide antibiotics in the teicoplanin producer is mediated by van gene homologue expression directing the synthesis of a modified cell wall peptidoglycan.
The study identifies the vanH, vanA, and vanX genes in Actinoplanes teichomyceticus, which are responsible for glycopeptide resistance by modifying cell wall peptidoglycan precursors, leading to resistance against teicoplanin and vancomycin.
Genetic diversity among Enterococcus faecalis.
The study identifies various AMR genes in Enterococcus faecalis, including blaZ, ermB, tetM, and vanA, which confer resistance to beta-lactams, macrolides, tetracyclines, and glycopeptides, respectively.
Vancomycin-resistant VanA phenotype Enterococcus faecalis: first case in Minas Gerais state and epidemiological considerations.
The study reports the first case of vancomycin-resistant Enterococcus faecalis with VanA phenotype and vanA genotype in Minas Gerais, Brazil.
Vancomycin-resistant Staphylococcus aureus isolates associated with Inc18-like vanA plasmids in Michigan.
The study identifies the vanA gene on Inc18-like plasmids in vancomycin-resistant Staphylococcus aureus (VRSA) isolates from Michigan, highlighting the role of these plasmids in the spread of vancomycin resistance.
A nanoplex PCR assay for the rapid detection of vancomycin and bifunctional aminoglycoside resistance genes in Enterococcus species.
The study developed a nanoplex PCR assay for the simultaneous detection of vancomycin and bifunctional aminoglycoside resistance genes in Enterococcus species, including vanA, vanB, vanC, vanD, and aacA-aphD.
Quantitative PCR monitoring of antibiotic resistance genes and bacterial pathogens in three European artificial groundwater recharge systems.
The study identified the presence of antibiotic resistance genes including tetO, ermB, mecA, blaSHV-5, ampC, and vanA in reclaimed water from three European artificial groundwater recharge systems. These genes were detected using real-time qPCR, indicating their potential impact on the environment.
Vancomycin-resistant Enterococcus faecalis from a wastewater treatment plant in Tabriz, Iran.
The study identified vanA and vanB as the primary resistance genes in vancomycin-resistant Enterococcus faecalis isolates from a wastewater treatment plant in Iran, with vanA being the most prevalent.
Fitness cost of VanA-type vancomycin resistance in methicillin-resistant Staphylococcus aureus.
The study characterizes the VanA-type vancomycin resistance in methicillin-resistant Staphylococcus aureus, highlighting the fitness cost associated with the acquisition of the vanA operon.
Vancomycin-resistant enterococci, Point Barrow, Alaska, USA.
Two isolates of vancomycin-resistant Enterococcus faecium were identified in glaucous gulls in Point Barrow, Alaska, carrying the vanA gene and showing high-level resistance to vancomycin, teicoplanin, ampicillin, and ciprofloxacin.
Characterization of methicillin-resistant Staphylococcus aureus, vancomycin-resistant enterococci and extended-spectrum beta-lactamase-producing Escherichia coli in intensive care units in Canada: Results of the Canadian National Intensive Care Unit (CAN-ICU) study (2005-2006).
The study identified bla CTX-M-15 as the dominant ESBL gene in E. coli isolates and vanA as the primary vancomycin resistance gene in VRE isolates.
Vancomycin-resistant Staphylococcus aureus, Michigan, USA, 2007.
The study reports two cases of vancomycin-resistant Staphylococcus aureus (VRSA) in Michigan, USA, in 2007. Both isolates were positive for the vanA gene, which confers vancomycin resistance.
VanA-type Staphylococcus aureus strain VRSA-7 is partially dependent on vancomycin for growth.
The study identifies the vanA gene cluster, erm(A), and ant(9)-Ia as conferring resistance to glycopeptides and aminoglycosides in VRSA-7. A mutation in the ddl gene (N308K) impairs d-alanine:d-alanine ligase activity, making the strain partially dependent on vancomycin for growth.
Enterococci in river Ganga surface waters: propensity of species distribution, dissemination of antimicrobial-resistance and virulence-markers among species along landscape.
The study identified the presence of vanA gene conferring vancomycin resistance in enterococci from river Ganga, along with various virulence markers such as gelE, esp, efaA, and ace.
Cotransfer of antibiotic resistance genes and a hylEfm-containing virulence plasmid in Enterococcus faecium.
The study identifies the vanA gene cluster as being physically linked to the hylEfm gene on a transferable plasmid in Enterococcus faecium, contributing to vancomycin resistance and virulence.
Environmental contamination by vancomycin resistant enterococci (VRE) in Swedish broiler production.
The study identifies vanA as the gene responsible for vancomycin resistance in Enterococcus faecium isolates from Swedish broiler production, highlighting its persistence in the environment despite cleaning.
Rapid detection of Vancomycin-Resistant Enterococci (VRE) in rectal samples from patients admitted to intensive care units.
The study describes a rapid protocol for detecting vancomycin-resistant enterococci (VRE) using a selective medium and multiplex PCR, identifying the vanA gene as the primary resistance determinant.
Pyrosequencing-based comparative genome analysis of the nosocomial pathogen Enterococcus faecium and identification of a large transferable pathogenicity island.
The study identifies the vanA transposon as a key determinant of vancomycin resistance in Enterococcus faecium and reports mutations in pbp5, gyrA, and parC associated with resistance to ampicillin and ciprofloxacin.
Specificity of induction of the vanA and vanB operons in vancomycin-resistant enterococci by telavancin
Telavancin induces the expression of vanA but not vanB operons in vancomycin-resistant enterococci, with vanA-type strains showing higher resistance to vancomycin and teicoplanin compared to vanB-type strains.
Tn1546 structures and multilocus sequence typing of vanA-containing enterococci of animal, human and food origin.
Dissemination of an Enterococcus Inc18-Like vanA plasmid associated with vancomycin-resistant Staphylococcus aureus.
The study identifies the dissemination of an Inc18-like vanA plasmid associated with vancomycin-resistant Staphylococcus aureus (VRSA) and highlights the role of this plasmid in the emergence of VRSA.
Characterization of vancomycin-resistant Enterococcus faecium isolated from swine in three Michigan counties.
The study identified the vanA gene as the primary mechanism of vancomycin resistance in Enterococcus faecium isolates from swine in Michigan, highlighting the presence of high-level vancomycin-resistant strains in food animals.
Proteomic characterization of vanA-containing Enterococcus recovered from Seagulls at the Berlengas Natural Reserve, W Portugal.
The study identified vanA-containing Enterococcus strains in seagull fecal samples, demonstrating vancomycin and teicoplanin resistance. The vanA gene was found in E. faecium and E. durans isolates, contributing to high-level glycopeptide resistance.
Increasing levels of minimum inhibitory concentration vancomycin in methicillin resistant Staphylococcus aureus alarming bell for vancomycin abusers?
The study reports the emergence of vancomycin resistance in methicillin-resistant Staphylococcus aureus (MRSA) strains, highlighting the increasing minimum inhibitory concentrations (MICs) of vancomycin.
Antimicrobial Resistance in Bacteria: Mechanisms and Current Challenges
This paper characterizes several beta-lactamases, including TEM-1, SHV-1, CTX-M-15, and NDM-1, which confer resistance to various beta-lactam antibiotics. It also identifies erm(B) and mef(A) as mechanisms of macrolide, lincosamide, and streptogramin B resistance. Additionally, aadA1 and aac(6')-Ib are noted for aminoglycoside resistance, while catA1 and floR contribute to chloramphenicol resistance. The vanA gene is associated with glycopeptide resistance, and mcr-1 is linked to polymyxin resistance.
Vancomycin resistance among methicillin resistant Staphylococcus aureus isolates from intensive care units of tertiary care hospitals in Hyderabad.
The study identified vancomycin resistance among methicillin-resistant Staphylococcus aureus (MRSA) isolates, with six out of seven vancomycin-resistant S. aureus (VRSA) isolates carrying the vanA gene.
Mechanisms of resistance and clinical relevance of resistance to β-lactams, glycopeptides, and fluoroquinolones.
The paper discusses the mechanisms of resistance to β-lactams, glycopeptides, and fluoroquinolones, highlighting the role of β-lactamases such as TEM, SHV, CTX-M, KPC, VIM, and NDM, glycopeptide resistance operons like vanA and vanB, and other resistance genes such as ermB, mecA, qnrA, and aac(6')-Ib.
Fatal meningitis caused by vancomycin-resistant enterococci: report of two cases from south India.
Two cases of enterococcal meningitis caused by vancomycin-resistant Enterococcus species were reported. The strain of E. gallinarum was found to have the vanA and vanC1 resistance genes.
Real-time PCR surveillance of vanA for vancomycin-resistant Enterococcus faecium.
The study evaluates the clinical usefulness of real-time PCR for detecting the vanA gene in vancomycin-resistant Enterococcus faecium, demonstrating its sensitivity and potential to replace conventional culture methods.
Complete genome sequence of Enterococcus faecium strain TX16 and comparative genomic analysis of Enterococcus faecium genomes.
The study identified the pbp5-R allele, which confers ampicillin resistance in Enterococcus faecium strain TX16. This resistance determinant was found in most HA-clade isolates but not in CA-clade isolates.
Genetic characterization of a vancomycin-resistant Staphylococcus aureus isolate from the respiratory tract of a patient in a university hospital in northeastern Iran.
The study identified a vancomycin-resistant Staphylococcus aureus (VRSA) isolate carrying the vanA gene, which confers resistance to vancomycin through the production of d-Ala-d-Lac.
Vancomycin resistant enterococci in farm animals - occurrence and importance.
The paper discusses the occurrence and significance of vancomycin-resistant enterococci (VRE), particularly focusing on the vanA gene which confers high-level glycopeptide resistance in Enterococcus faecium. It highlights the role of avoparcin use in selecting for VRE in farm animals and the subsequent decline in VRE prevalence after avoparcin was discontinued.
Rapid identification of pathogens from positive blood cultures by multiplex polymerase chain reaction using the FilmArray system.
The FilmArray BC panel accurately identifies pathogens and detects resistance genes such as mecA, vanA, and blaKPC from positive blood cultures.
Comparison of PCR/electron spray ionization-time-of-flight-mass spectrometry versus traditional clinical microbiology for active surveillance of organisms contaminating high-use surfaces in a burn intensive care unit, an orthopedic ward and healthcare workers.
The study compared PCR/ESI-TOF-MS with traditional clinical microbiology for detecting organisms and resistance genes in healthcare environments. It identified mecA, vanA, and KPC-3 resistance genes in various samples.
Evaluation of a PCR assay to detect enterococcusfaecalis in blood and determine glycopeptides resistance genes: van a and van B.
The study evaluated a PCR assay for the rapid detection and characterization of Enterococcus faecalis and determination of its resistance to vancomycin through the identification of vanA and vanB genes.
Vancomycin-resistant gram-positive cocci isolated from the saliva of wild songbirds.
The study identified vancomycin-resistant gram-positive cocci, including Staphylococcus succinus, Staphylococcus saprophyticus, and Enterococcus gallinarum, carrying vanA, vanB, and vanC genes, indicating the presence of vancomycin resistance in wild songbirds.
PCR-reverse blot hybridization assay for screening and identification of pathogens in sepsis.
The study developed a PCR-reverse blot hybridization assay (REBA Sepsis-ID test) for the rapid identification of pathogens in sepsis, including detection of antibiotic resistance genes mecA, vanA, and vanB.
Identification and Characterization of a High Vancomycin-Resistant Staphylococcus aureus Harboring VanA Gene Cluster Isolated from Diabetic Foot Ulcer.
A high-level vancomycin-resistant Staphylococcus aureus isolate harboring the vanA gene cluster was identified, indicating the presence of community-acquired VRSA in Iran.
Nasal and perirectal colonization of vancomycin sensitive and resistant enterococci in patients of paediatrics ICU (PICU) of tertiary health care facilities.
The study identified the presence of vancomycin-resistant enterococci (VRE) and vancomycin-sensitive enterococci (VSE) in pediatric ICU patients, with the vanA gene being detected in VRE isolates.
Diagnosis by real-time polymerase chain reaction of pathogens and antimicrobial resistance genes in bone marrow transplant patients with bloodstream infections.
The study identified mecA, vanA, blaSHV, and blaCTX-M genes in bone marrow transplant patients with bloodstream infections using real-time PCR.
Fitness costs of various mobile genetic elements in Enterococcus faecium and Enterococcus faecalis.
The study identified the vanA gene as a key contributor to vancomycin resistance in Enterococcus faecium and Enterococcus faecalis, highlighting its fitness costs upon acquisition.
In vivo studies suggest that induction of VanS-dependent vancomycin resistance requires binding of the drug to d-Ala-d-Ala termini in the peptidoglycan cell wall.
The study shows that vancomycin resistance in Streptomyces coelicolor requires the binding of vancomycin to d-Ala-d-Ala termini of peptidoglycan precursors, and that the vanA gene encodes a d-Ala-d-Lac ligase that replaces d-Ala-d-Ala in the cell wall, reducing vancomycin binding affinity.
Multiplex identification of gram-positive bacteria and resistance determinants directly from positive blood culture broths: evaluation of an automated microarray-based nucleic acid test.
The study evaluated the Verigene Gram-Positive Blood Culture Test (BC-GP) for the detection of Gram-positive bacteria and resistance determinants directly from positive blood cultures. The test showed high sensitivity and specificity for identifying Staphylococcus aureus, Staphylococcus epidermidis, and Enterococcus species, as well as detecting the mecA gene for methicillin resistance and the vanA gene for vancomycin resistance.
Molecular characterization of vanA-containing Enterococcus from migratory birds: song thrush (Turdus philomelos)
The study identified vanA-containing Enterococcus isolates from song thrushes in Portugal, showing high-level resistance to vancomycin and teicoplanin, along with resistance to other antibiotics such as erythromycin, tetracycline, ciprofloxacin, and chloramphenicol.
Detection of Vancomycin Resistant Enterococci from Rectal Swab Samples by Becton-Dickinson GeneOhm VanR assay and Culture at ICU of a Tertiary Care Center in Turkey.
The study detected vancomycin-resistant Enterococcus (VRE) using the BD GeneOhm VanR assay and culture methods, identifying vanA and vanB genes as responsible for vancomycin resistance in Enterococcus faecium isolates.
Peptidoglycan Cross-Linking in Glycopeptide-Resistant Actinomycetales.
The study identifies vanH, vanA, vanX, vanK, and a metallo-d,d-carboxypeptidase as key genes involved in glycopeptide resistance in Actinomycetales through peptidoglycan cross-linking mechanisms.
Detection of Vancomycin resistant Enterococci with vanA genotype in clinical isolates from a tertiary care centre.
The study detected vancomycin-resistant Enterococci with the vanA genotype in clinical isolates from a tertiary care center.
Phenotypic & genotypic characterization of vancomycin resistant Enterococcus isolates from clinical specimens.
The study identified vanA as the most common vancomycin resistance gene in Enterococcus isolates, with 96.87% of VRE isolates carrying this gene. Additionally, a single isolate was found to possess both vanA and vanC1 genes, indicating complex resistance mechanisms.
The role of the Staphylococcal VraTSR regulatory system on vancomycin resistance and vanA operon expression in vancomycin-resistant Staphylococcus aureus.
The study demonstrates that the VraTSR regulatory system enhances the expression of the vanA operon, contributing to vancomycin resistance in VRSA strains.
Transferable vancomycin resistance in a community-associated MRSA lineage.
The study reports the emergence of vancomycin-resistant Staphylococcus aureus (VRSA) in a community-associated MRSA lineage, highlighting the transfer of the vanA gene cluster via a novel plasmid, pBRZ01, which also carries aac(6')-aph(2"), conferring resistance to vancomycin and gentamicin, respectively.
Prevalence and detection of mixed-population enterococcal bacteremia.
The study identified vanA as a gene responsible for vancomycin resistance in enterococcal isolates, highlighting the importance of detecting mixed-population bacteremia.
Molecular analysis of vanA outbreak of Enterococcus faecium in two Warsaw hospitals: the importance of mobile genetic elements.
The study identified the vanA gene as the primary determinant of vancomycin and teicoplanin resistance in Enterococcus faecium outbreaks. Additional resistance genes such as erm(B), tet(M), aac(6')-Ie-aph(2'')-Ia, aph(3')-IIIa, and aad6 were also characterized, contributing to multidrug resistance.
Vancomycin resistance due to VanA in an Aerococcus viridans isolate.
The study reports vancomycin resistance in an Aerococcus viridans isolate due to the presence of the vanA gene.
Rapid Diagnostic Approaches for Antimicrobial Resistance
The paper discusses various rapid antimicrobial resistance testing methods, including molecular techniques like qPCR, DNA microarrays, Luminex xMAP, and next-generation sequencing (NGS), highlighting their roles in detecting resistance genes such as blaCTX-M, blaTEM, blaSHV, blaKPC, blaNDM, blaOXA-48, blaVIM, blaIMP, mecA, mecC, vanA, vanB, aacA-aphD, tetK, tetM, ermA, ermC, vatA, vatB, and vatC in different bacterial species.
Multiresistant bacteria isolated from chicken meat in Austria.
The study identified ESBL-producing E. coli with bla SHV-12, bla CTX-m-1, and bla SHV-2 genes, VRE with van A and van B genes, and MRCNS with the mec A gene in chicken meat samples from Austria.
Vancomycin-variable enterococci can give rise to constitutive resistance during antibiotic therapy.
The study identifies the molecular mechanisms behind the reversion of vancomycin-susceptible enterococci (VSE) to vancomycin-resistant enterococci (VRE) during antibiotic therapy, highlighting the role of the vanA gene in constitutive resistance.
Evaluation of the iNtRON VRE vanA/vanB real-time PCR assay for detection of vancomycin-resistant enterococci.
The iNtRON VRE vanA/vanB real-time PCR assay demonstrated high sensitivity and specificity for detecting vancomycin-resistant enterococci (VRE) in rectal swab specimens, with 100% sensitivity and 99.2% specificity for vanA detection.
Streptococcus gallolyticus subsp. gallolyticus from human and animal origins: genetic diversity, antimicrobial susceptibility, and characterization of a vancomycin-resistant calf isolate carrying a vanA-Tn1546-like element.
The study characterizes a vancomycin-resistant Streptococcus gallolyticus subsp. gallolyticus isolate carrying a vanA-Tn1546-like element, highlighting the presence of glycopeptide resistance mechanisms in this species.
Antimicrobial Resistance Mechanisms in Salmonella and Other Bacteria
The paper discusses multidrug efflux pumps from various bacterial food pathogens including Enterobacteriaceae, Vibrio cholerae, and Staphylococcus aureus, highlighting their role in multidrug resistance.
A locked nucleic acid (LNA)-based real-time PCR assay for the rapid detection of multiple bacterial antibiotic resistance genes directly from positive blood culture.
The study developed an LNA-qPCR assay for the rapid detection of 13 antibiotic resistance genes, including bla CTX-M-1, bla CTX-M-9, bla CMY-2, bla DHA-1, bla OXA-23, bla VIM-2, mecA, vanA, and vanB. The assay showed high specificity and sensitivity, with 91.5% concordance with phenotypic susceptibility testing.
Characterization of an Enterococcus gallinarum Isolate Carrying a Dual vanA and vanB Cassette.
The study identifies an Enterococcus gallinarum isolate carrying both vanA and vanB genes, which confer high-level resistance to vancomycin and teicoplanin. The vanA gene was found on a plasmid, while the vanB gene was integrated into the chromosome.
Isolation and Biochemical Fingerprinting of Vancomycin-Resistant Enterococcus faecium From Meat, Chicken and Cheese.
The study identified vancomycin-resistant Enterococcus faecium isolates from meat, chicken, and cheese samples, all carrying the vanA gene, which confers resistance to vancomycin and teicoplanin.
Sampling and Pooling Methods for Capturing Herd Level Antibiotic Resistance in Swine Feces using qPCR and CFU Approaches.
The study identified several antibiotic resistance genes in swine fecal samples using qPCR, including tetracycline resistance genes (tet(A), tet(B), tet(C), tet(M), tet(O), tet(W)), erythromycin resistance genes (ermB, ermF), sulfonamide resistance genes (sulI, sulII), beta-lactam resistance genes (blaCTX-M-1 group, blaCMY-2, blaSHV family), and glycopeptide resistance gene (vanA).
Characterization of fecal vancomycin-resistant enterococci with acquired and intrinsic resistance mechanisms in wild animals, Spain.
The study identified a single VRE-a isolate from a wild boar carrying the vanA gene, which confers high-level resistance to vancomycin. Additionally, VRE-i isolates from red kites and white storks were found to have intrinsic resistance mechanisms via the vanC gene.
Diagnosis of bacteremia in pediatric oncologic patients by in-house real-time PCR.
The study identified several AMR genes including blaCTX, blaTEM, blaSPM, mecA, and vanA in pediatric oncologic patients with bloodstream infections, demonstrating the utility of real-time PCR for rapid detection of pathogens and resistance genes.
Detection of both vanA & vanB genes in vanA phenotypes of Enterococci by Taq Man RT-PCR.
The study detected both vanA and vanB genes in vancomycin-resistant Enterococci isolates, highlighting the presence of these resistance genes in clinical settings in Iran.
Thirty-minute screening of antibiotic resistance genes in bacterial isolates with minimal sample preparation in static self-dispensing 64 and 384 assay cards.
The study presents a rapid LAMP-based method for detecting antibiotic resistance genes in bacterial isolates with minimal sample preparation, demonstrating successful detection of various resistance genes including aadD, bacA, ble, mepA, norA, qacA, and tetM.
Development of a heptaplex PCR assay for identification of Staphylococcus aureus and CoNS with simultaneous detection of virulence and antibiotic resistance genes.
The study developed a heptaplex PCR assay for the simultaneous detection of Staphylococcus aureus, coagulase-negative staphylococci (CoNS), and genes associated with methicillin and vancomycin resistance (mecA and vanA).
Methicillin-Susceptible, Vancomycin-Resistant Staphylococcus aureus, Brazil.
The study reports the first case of a methicillin-susceptible, vancomycin-resistant Staphylococcus aureus (VR-MSSA) isolate in Brazil, which acquired the vanA-containing plasmid pBRZ01, leading to high-level vancomycin resistance. The plasmid also carried aac(6')-aph(2'') for gentamicin resistance.
Vancomycin-Variable Enterococcal Bacteremia
The study reports a case of vancomycin-variable Enterococcus (VVE) bacteremia, highlighting the challenges in diagnosing and treating VVE due to its ability to develop resistance to vancomycin despite initial susceptibility. The VVE isolates were found to possess the vanA gene, which is responsible for vancomycin resistance.
Performance Evaluation of the Verigene Gram-Positive and Gram-Negative Blood Culture Test for Direct Identification of Bacteria and Their Resistance Determinants from Positive Blood Cultures in Hong Kong.
The Verigene Blood Culture Test effectively identifies bacteria and their resistance determinants, including bla CTX-M, bla OXA, vanA, and mecA genes, demonstrating high sensitivity and specificity for detecting antimicrobial resistance in clinical settings.
Evaluation of the FilmArray Blood Culture Identification Panel: Results of a Multicenter Controlled Trial.
The FilmArray BCID panel accurately detected methicillin-resistant Staphylococcus aureus (mecA), vancomycin-resistant Enterococcus (vanA), and Klebsiella pneumoniae carbapenemase (blaKPC) in blood cultures with high sensitivity and specificity.
Chlorhexidine Induces VanA-Type Vancomycin Resistance Genes in Enterococci.
Chlorhexidine induces the expression of VanA-type vancomycin resistance genes in Enterococcus faecium and Enterococcus faecalis, including vanH, vanA, vanX, vanY, and vanZ, which are part of the vancomycin resistance gene cluster.
Evaluation of Verigene Blood Culture Test Systems for Rapid Identification of Positive Blood Cultures.
The Verigene BC-GP assay correctly identified mecA and vanA resistance genes in Gram-positive bacteria, while the BC-GN assay detected extended-spectrum beta-lactamase CTX-M and carbapenemase OXA resistance genes in Gram-negative bacteria.
Invasive enterococcal infections in Poland: the current epidemiological situation.
The study identified vanA and vanB genes as the primary mechanisms of vancomycin resistance in Enterococcus faecium isolates, with vanA being more prevalent. High-level aminoglycoside resistance was observed in over 50% of isolates, and multidrug resistance was common.
A Silenced vanA Gene Cluster on a Transferable Plasmid Caused an Outbreak of Vancomycin-Variable Enterococci.
The study identifies a silenced vanA gene cluster on a transferable plasmid that can revert to a vancomycin-resistant phenotype upon exposure to vancomycin. The vanA gene cluster was found to be located on a broad-host-range plasmid, facilitating horizontal transfer between different Enterococcus species.
Antimicrobial Resistance Mechanisms
The paper discusses various mechanisms of antibiotic resistance, including beta-lactamases like blaKPC, blaNDM, blaIMP, and blaVIM, which confer resistance to carbapenems. It also covers aminoglycoside modifying enzymes such as aac(6')-Ib and aac(6')-I, quinolone resistance proteins like qnr, tetracycline resistance genes such as tet(M) and tet(O), macrolide resistance genes like erm, mefA, and mefE, and efflux pump systems like mexAB-oprM and acrAB-tolC.
Emergence of vanA gene among vancomycin-resistant enterococci in a tertiary care hospital of North - East India.
The study reports the emergence of vancomycin-resistant enterococci (VRE) carrying the vanA gene in a tertiary care hospital in North-East India, highlighting the need for improved infection control measures.
Substrate Inhibition of VanA by d-Alanine Reduces Vancomycin Resistance in a VanX-Dependent Manner.
The study demonstrates that d-alanine can inhibit the activity of VanA, reducing vancomycin resistance in Streptomyces coelicolor and vancomycin-resistant Enterococcus faecium. This effect is enhanced in the absence of VanX.
Phenotypic and genotypic characterization of Enterococcus cecorum strains associated with infections in poultry.
The study identified the presence of the vanA gene in one E. cecorum strain, indicating vancomycin resistance. High levels of resistance to enrofloxacin, teicoplanin, doxycycline, and erythromycin were observed in the isolates.
Development of a Real-Time PCR Protocol Requiring Minimal Handling for Detection of Vancomycin-Resistant Enterococci with the Fully Automated BD Max System.
The study developed and evaluated a real-time PCR protocol for detecting vanA and vanB genes in vancomycin-resistant enterococci using the BD Max system, demonstrating high sensitivity and specificity.
Performance Evaluation of the IRIDICA BAC BSI Assay for Detection of Bloodstream Infections
The study characterizes the IRIDICA BAC BSI Assay for rapid detection of bacteria and Candida in blood, focusing on the detection of specific antibiotic resistance markers including mecA, vanA, vanB, and blaKPC.
Metagenome and Metatranscriptome Analyses Using Protein Family Profiles.
The study demonstrates the utility of HMM-GRASPx for profiling antimicrobial resistance (AMR) gene families in metagenomic data sets, highlighting the distinct resistome profiles across different body sites and the importance of AMR gene abundance in understanding bacterial communities.
Vancomycin-Resistant Enterococci and Bacterial Community Structure following a Sewage Spill into an Aquatic Environment.
The study identified vanA gene-carrying Enterococcus faecium in water and sediment samples following a sewage spill, demonstrating the persistence of vancomycin-resistant enterococci in the environment.
Whole genomic sequence analysis of Bacillus infantis: defining the genetic blueprint of strain NRRL B-14911, an emerging cardiopathogenic microbe.
The study identifies vancomycin resistance genes vanA and vanB in Bacillus infantis NRRL B-14911, highlighting its potential to confer resistance to vancomycin.
Clinical relevance of molecular identification of microorganisms and detection of antimicrobial resistance genes in bloodstream infections of paediatric cancer patients.
The study identified the presence of mecA, vanA, blaCTX, and blaSPM genes in various pathogens associated with bloodstream infections in paediatric cancer patients, highlighting the significance of molecular detection for rapid and accurate identification of antimicrobial resistance.
Colonization Rate and Risk Factors of Vancomycin-Resistant Enterococci among Patients Received Hematopoietic Stem Cell Transplantation in Shiraz, Southern Iran.
The study identified vanA, vanB, vanC1, and vanC2/C3 genes in vancomycin-resistant Enterococcus isolates from HSCT patients, highlighting the prevalence of high-level vancomycin resistance in E. faecium and the association of vanA with severe resistance.
Interspecies transfer of vancomycin, erythromycin and tetracycline resistance among Enterococcus species recovered from agrarian sources.
The study identified the transfer of vancomycin, erythromycin, and tetracycline resistance genes among Enterococcus species, highlighting the potential for horizontal gene transfer in agrarian environments.
High frequency of vancomycin resistant Enterococcus faecalis in children: an alarming concern.
The study found a high frequency of vancomycin-resistant Enterococcus faecalis (VREF) in children, with the vanA gene being the primary determinant of glycopeptide resistance.
Vancomycin Resistance due to vanA Gene Expression in an Aerococcus viridans Isolate: First Case in Korea.
The study reports the first case of vancomycin-resistant Aerococcus viridans in Korea, which harbors the vanA gene, leading to resistance against vancomycin and teicoplanin.
Genomic confirmation of vancomycin-resistant Enterococcus transmission from deceased donor to liver transplant recipient.
The study confirms the transmission of vancomycin-resistant Enterococcus (VRE) from a deceased donor to a liver transplant recipient using genomic analysis. The vanA gene was identified as the resistance determinant.
Detection of vancomycin-resistant enterococci (VRE) in stool specimens submitted for Clostridium difficile toxin testing.
The study identified vanA as the gene responsible for vancomycin and teicoplanin resistance in Enterococcus faecium isolates from stool samples.
SURVEILLANCE FOR VANCOMYCIN RESISTANT ENTEROCOCCI IN A TERTIARY INSTITUTION IN SOUTH WESTERN NIGERIA.
The study identified vanA, vanB, vanC1, and vanC2 genes in Vancomycin-resistant Enterococcus isolates, highlighting the presence of glycopeptide resistance mechanisms in a Nigerian tertiary hospital.
Susceptibility Pattern of Enterococci at Tertiary Care Hospital.
The study identified vancomycin-resistant enterococci (VREs) with the VanA phenotype and genotype, highlighting the significance of the vanA gene in vancomycin resistance.
Identification of tigecycline- and vancomycin-resistant Staphylococcus aureus strains among patients with urinary tract infection in Iran.
The study identified vancomycin-resistant Staphylococcus aureus strains carrying the vanA gene and tigecycline-resistant S. aureus strains in Iran.
Carriage frequency, phenotypic, and genotypic characteristics of methicillin-resistant Staphylococcus aureus isolated from dental health-care personnel, patients, and environment.
The study identified methicillin-resistant Staphylococcus aureus (MRSA) isolates carrying the mecA gene, which confers methicillin resistance. Additionally, some isolates harbored the vanA gene, indicating vancomycin resistance. The study also detected the presence of the tst gene, which encodes the toxic shock syndrome toxin, and the PVL gene, which encodes the Panton-Valentine leukocidin toxin.
Genome characterization of a novel binary toxin-positive strain of Clostridium difficile and comparison with the epidemic 027 and 078 strains.
The study identified several antibiotic resistance genes in the ST201 strains of Clostridium difficile, including vancomycin resistance operons (VanA, VanB, VanG, VanE), virginiamycin A acetyltransferase, multidrug resistance efflux pumps, bacitracin resistance genes, tetracycline resistance genes, and fluoroquinolone resistance genes.
Molecular characterization of vancomycin-resistant Staphylococcus aureus strains isolated from clinical samples: A three year study in Tehran, Iran.
The study identified vancomycin-resistant Staphylococcus aureus (VRSA) strains carrying the vanA gene, along with multiple resistance genes such as mecA, ermA, ermB, ermC, msrA, msrB, tetM, ant(4')-Ia, aac(6')-Ie/aph(2'')-Ia, and aph(3')-IIIa. These strains exhibited high-level resistance to vancomycin and other antibiotics.
Characterization of SCCmec and spa types of methicillin-resistant Staphylococcus aureus isolates from health-care and community-acquired infections in Kerman, Iran.
The study identified mecA and vanA genes in methicillin-resistant and vancomycin-resistant Staphylococcus aureus isolates, highlighting their role in antibiotic resistance.
Detection of Antibiotic Resistance and Resistance Genes in Enterococci Isolated from Sucuk, a Traditional Turkish Dry-Fermented Sausage.
The study identified several AMR genes including ermB, ermC, gyrA, tetM, tetL, and vanA in Enterococcus isolates from Sucuk, highlighting the potential for these bacteria to serve as reservoirs of antibiotic resistance genes.
RNA-seq and Tn-seq reveal fitness determinants of vancomycin-resistant Enterococcus faecium during growth in human serum.
The study identifies genes involved in nucleotide biosynthesis and carbohydrate metabolism that are essential for the growth of vancomycin-resistant Enterococcus faecium in human serum, highlighting potential targets for novel antimicrobials.
The complex resistomes of Paenibacillaceae reflect diverse antibiotic chemical ecologies.
The study explores the complex resistomes of Paenibacillaceae, revealing diverse antibiotic resistance mechanisms including intrinsic and acquired resistance genes such as aadD2, vanA, vanB, vanC, vanD, vanE, vanF, vanG, mcr, bla, tet, qnr, erm, mph, lnu, lsa, vat, vgb, cat, cfr, optrA, poxtA, sul, dfr, mexAB-OprM, acrAB-TolC, and oqxAB.
Genetic Basis of Emerging Vancomycin, Linezolid, and Daptomycin Heteroresistance in a Case of Persistent Enterococcus faecium Bacteremia.
The study identifies a novel mutation in fabF associated with daptomycin resistance and confirms the role of vanA in vancomycin resistance in Enterococcus faecium. Additionally, a G2576U mutation in 23S rRNA was linked to linezolid resistance.
DeepARG: a deep learning approach for predicting antibiotic resistance genes from metagenomic data.
The DeepARG models demonstrate improved accuracy in predicting antibiotic resistance genes from metagenomic data, reducing false negatives compared to traditional methods.
New insights into the metabolic potential of the phototrophic purple bacterium Rhodopila globiformis DSM 161(T) from its draft genome sequence and evidence for a vanadium-dependent nitrogenase.
The study identifies the presence of a vanA glycopeptide resistance cassette in Rhodopila globiformis DSM 161(T), indicating resistance to vancomycin. Additionally, the genome reveals multiple genes involved in heavy metal resistance and antibiotic resistance mechanisms.
Phenotypic and Molecular Identification of Vancomycin Resistance in Clinical Staphylococcus Aureus Isolates in Osogbo, Nigeria.
The study identified a single vancomycin-resistant S. aureus (VRSA) isolate that was resistant to all eight antibiotics tested, but did not contain vanA or vanB genes. Additionally, five MRSA isolates were detected, all of which were mecA positive.
A novel high-resolution melting analysis approach for rapid detection of vancomycin-resistant enterococci.
The study demonstrates the use of 16S rRNA-based PCR-high resolution melting analysis (HRMA) for rapid detection of vancomycin-resistant Enterococcus (VRE) strains, specifically those harboring vanA and vanB genes.
Occurrence of the vanA gene in Staphylococcus epidermidis from nasopharyngeal secretion of Health-Care Workers, Recife, Brazil.
The study identifies the presence of the vanA gene in a Staphylococcus epidermidis strain from healthcare workers, indicating vancomycin resistance.
Comparative genomic analysis of Enterococcus faecalis: insights into their environmental adaptations.
The study identified 293 environment-specific genes and found that blood-originating strains had the highest number of antibiotic resistance genes, including vanA and vanB-type vancomycin resistance clusters.
Analysis of bacteriological pollution and the detection of antibiotic resistance genes of prevailing bacteria emanating from pig farm seepage.
The study identified several antibiotic resistance genes in bacteria isolated from pig farm seepage, including aadA, aa(6')-le-aph(2")-la, aph(2")-lb, aph(2")-lc, aph(2")-ld, aph(3")-llla, ant(4')-la, VanA, VanB, VanC2/C3, InuA, InuB, InuC, InuF, blaTEM, blaSHV, blaOXA, OtrA, OtrB, Sul1, and Sul2. These genes conferred resistance to various antibiotics such as penicillins, sulfamethoxazole, tetracyclines, and glycopeptides.
Reduction of Antibiotic Resistant Bacteria During Conventional and Advanced Wastewater Treatment, and the Disseminated Loads Released to the Environment.
The study identifies several antibiotic resistance genes (ARGs) in wastewater, including mecA, ctx-M32, ermB, blaTEM, sul1, vanA, and intI1, and evaluates the effectiveness of advanced wastewater treatment technologies in reducing their abundance.
Molecular detection of vanA and vanB genes among vancomycin-resistant enterococci in ICU-hospitalized patients in Ahvaz in southwest of Iran.
The study identified the vanA gene as the primary determinant of vancomycin resistance in Enterococcus isolates from ICU patients in Ahvaz, Iran, with 91.5% of vancomycin-resistant isolates harboring this gene.
Characterization of Infections with Vancomycin-Intermediate Staphylococcus aureus (VISA) and Staphylococcus aureus with Reduced Vancomycin Susceptibility in South Korea.
The study found no vancomycin-resistant S. aureus (VRSA) in South Korea, but identified vancomycin-intermediate S. aureus (VISA) and S. aureus with reduced vancomycin susceptibility (SA-RVS). The vanA and vanB genes were not detected in any isolates.
Gamma Irradiation Influences the Survival and Regrowth of Antibiotic-Resistant Bacteria and Antibiotic-Resistance Genes on Romaine Lettuce.
The study investigated the impact of gamma irradiation on antibiotic-resistant bacteria and antibiotic resistance genes (ARGs) on romaine lettuce. It found that irradiation significantly reduced the abundance of certain ARGs, including those conferring resistance to tetracycline.
Agricultural Origins of a Highly Persistent Lineage of Vancomycin-Resistant Enterococcus faecalis in New Zealand.
The study identifies the ST108 lineage of vancomycin-resistant Enterococcus faecalis as having an agricultural origin, with multiple resistance genes including vanA, ermB, tetL, tetM, and bcr operon components contributing to its persistence in New Zealand.
Antimicrobial Resistance, Virulence Determinants, and Biofilm Formation of Enterococcus Species From Ready-to-Eat Seafood.
The study identified various antimicrobial resistance genes including ermA, ermB, ermC, mphC, vanA, vanB, tetA, and tetM in Enterococcus species isolated from ready-to-eat seafood, indicating the presence of multidrug-resistant strains.
FLASH: a next-generation CRISPR diagnostic for multiplexed detection of antimicrobial resistance sequences.
FLASH-NGS was developed for the detection of antimicrobial resistance genes and mutations in clinical samples, demonstrating high sensitivity and specificity for various pathogens including Staphylococcus aureus, Enterococcus faecium, and Plasmodium falciparum.
Species, antibiotic susceptibility profiles and van gene frequencies among enterococci isolated from patients at Mulago National Referral Hospital in Kampala, Uganda.
The study identified vanA and vanB genes in Enterococcus casseliflavus/gallinarum, which are intrinsically resistant to vancomycin. These genes were detected in 15.8% and 7.9% of the isolates, respectively.
Emergence of an Australian-like pstS-null vancomycin resistant Enterococcus faecium clone in Scotland.
The study identifies multiple AMR genes in Scottish vancomycin-resistant Enterococcus faecium (VREfm) isolates, including aac(6')-Ii, aac(6')-aph(2''), ermB, pbp5-R, vanA, ant(9)-Ia, tetL, and dfrG. These genes confer resistance to various antibiotics, highlighting the multidrug-resistant nature of the isolates.
Establishing Antimicrobial Resistance Surveillance & Research Network in India: Journey so far.
The study characterizes various AMR genes and mutations in different bacterial pathogens, highlighting the prevalence of resistance to multiple antibiotics, including beta-lactams, fluoroquinolones, and aminoglycosides. Key findings include the widespread presence of bla OXA-48, bla TEM, and qnrS1 in Enterobacteriaceae, and mecA, mupA, cfr, and ermC in Staphylococcus aureus.
Vancomycin-resistant Staphylococcus aureus isolated from camel meat and slaughterhouse workers in Egypt.
The study identified vancomycin-resistant Staphylococcus aureus (VRSA) in camel meat and slaughterhouse workers in Egypt, with all VRSA isolates carrying both vanA and vanB genes.
Molecular analysis and epidemiological typing of Vancomycin-resistant Enterococcus outbreak strains.
The study identified the vanA gene as the primary resistance mechanism in vancomycin-resistant Enterococcus faecium isolates during an outbreak. The gene was experimentally validated and associated with high MIC values for vancomycin.
High incidence of virulence determinants, aminoglycoside and vancomycin resistance in enterococci isolated from hospitalized patients in Northwest Iran.
The study identified several aminoglycoside resistance genes (aac(6')-Ie-aph(2")-Ia, ant(3")-III, aph(3')-IIIa, ant(6')-Ia) and the vancomycin resistance gene vanA in enterococci isolated from hospitalized patients in Northwest Iran. These genes were found to confer resistance to gentamicin and vancomycin, highlighting the prevalence of multidrug-resistant enterococci in the region.
Dissemination prevention of antibiotic resistant and facultative pathogenic bacteria by ultrafiltration and ozone treatment at an urban wastewater treatment plant.
The study analyzed the effectiveness of ultrafiltration and ozone treatment in reducing antibiotic resistance genes (ARGs) and facultative pathogenic bacteria in wastewater. It identified several ARGs, including sul1, blaTEM, tetM, CTX-M, CTX-M-32, blaOXA-48, blaVIM, CMY-2, vanA, mcr-1, blaNDM, ermB, and intl1, which were found to be prevalent in the wastewater. Both ultrafiltration units showed significant reduction in these ARGs and pathogenic bacteria, whereas ozone treatment was less effective.
Spatiotemporal dynamics of multidrug resistant bacteria on intensive care unit surfaces.
The study identified various AMR genes, including bla OXA-23, bla OXA-66, bla NDM-1, bla NDM-5, bla NDM-7, bla OXA-181, bla OXA-232, erm(B), vanA, msr(C), fosA, oqxA, aph(3')-lb, bla PAO, bla OXA-50, catB7, and bla GES-5, in multidrug-resistant bacteria isolated from ICU surfaces in Pakistan and the USA.
Prevalence of Multidrug-Resistant Enterococcus faecalis in Hospital-Acquired Surgical Wound Infections and Bacteremia: Concomitant Analysis of Antimicrobial Resistance Genes.
The study identified ere(B) and erm(B) genes as primary mediators of erythromycin resistance, and vanA as the main determinant of vancomycin resistance in multidrug-resistant Enterococcus faecalis isolates from hospital-acquired infections.
Novel Multidrug-Resistant Enterococcal Mobile Linear Plasmid pELF1 Encoding vanA and vanM Gene Clusters From a Japanese Vancomycin-Resistant Enterococci Isolate.
The study identifies a novel multidrug-resistant enterococcal mobile linear plasmid pELF1 that encodes vanA and vanM gene clusters, conferring resistance to vancomycin, as well as other antibiotics such as streptomycin, streptothricin, kanamycin, and erythromycin.
Development of a Multiplex PCR Platform for the Rapid Detection of Bacteria, Antibiotic Resistance, and Candida in Human Blood Samples.
The study describes a multiplex PCR platform called MicrobScan for the rapid detection of bacteria, Candida, and antibiotic resistance genes in human blood samples. It successfully detected 20 bacterial and four Candida species, as well as three antibiotic-resistance determinants: blaKPC, mecA, and vanA/vanB.
Significant reduction of vancomycin resistant E. faecium in the Norwegian broiler population coincided with measures taken by the broiler industry to reduce antimicrobial resistant bacteria.
The study shows a significant reduction in vancomycin-resistant Enterococcus faecium (VRE) in Norwegian broilers, which coincided with the removal of narasin as a feed additive. The vanA gene was identified as the primary mechanism of vancomycin resistance, and a putative narasin resistance mechanism was associated with VRE.
Screening of biomarkers of drug resistance or virulence in ESCAPE pathogens by MALDI-TOF mass spectrometry.
The study identified several biomarkers for drug resistance in ESCAPE pathogens using MALDI-TOF MS, including vanA for vancomycin resistance in E. faecium, mecA for methicillin resistance in S. aureus, blaOXA-24 and blaOXA-58 for carbapenem resistance in A. baumannii, and blaNDM for carbapenem resistance in K. pneumoniae.
Incidence of Vancomycin Resistant Phenotype of the Methicillin Resistant Staphylococcus aureus Isolated from a Tertiary Care Hospital in Lahore.
The study identified the presence of methicillin-resistant (mecA) and vancomycin-resistant (vanA) genes in Staphylococcus aureus isolates, highlighting the need for careful antibiotic use.
Rapid bacterial detection and antibiotic susceptibility testing in whole blood using one-step, high throughput blood digital PCR.
The study presents a rapid diagnostic platform integrating one-step blood droplet digital PCR and a high-throughput 3D particle counter for direct bacterial identification and antibiotic susceptibility testing from whole blood, capable of detecting various antibiotic resistance genes such as bla CTX-M-1, bla CTX-M-2, bla KPC, bla OXA-48, vanA, mecA, nuc, uidA, and khe.
Methicillin-resistant Staphylococcus aureus and glycopeptide-resistant enterococci in fecal samples of birds from South-Eastern Poland.
The study identified methicillin-resistant Staphylococcus aureus (MRSA) and glycopeptide-resistant enterococci (VRE) in fecal samples of birds from South-Eastern Poland, highlighting their potential role as reservoirs of antibiotic-resistant bacteria.
Molecular characteristics and predictors of mortality among Gram-positive bacteria isolated from bloodstream infections in critically ill patients during a 5-year period (2012-2016).
The study identified mecA, vanA, and cfr genes associated with methicillin, vancomycin, and linezolid resistance, respectively, in Gram-positive bacteria causing bloodstream infections. Additionally, mutations in the 23S rDNA (C2534T and T2504A) were linked to linezolid resistance in Staphylococcus epidermidis.
Safety profiles of beneficial lactic acid bacteria isolated from dairy systems.
The study identified several AMR genes in lactic acid bacteria isolated from dairy systems, including vanC2, vanA, ermB, aac(6′)-Ie-aph(2″)-Ia, tet(S), ant(4′)-Ia, tdc, cpd, int, mur-2ed, asa1, ccf, and hyl. These genes conferred resistance to various antibiotics such as vancomycin, gentamicin, tetracycline, and chloramphenicol.
Comparative genomics of multidrug-resistant Enterococcus spp. isolated from wastewater treatment plants.
The study identified several AMR genes in multidrug-resistant Enterococcus spp. isolated from wastewater treatment plants, including vancomycin resistance genes (vanA, vanM, vanG, vanC), macrolide resistance genes (ermB, msrC), tetracycline resistance genes (tetL), aminoglycoside resistance genes (aad(6'), aac(6')-Ie-aph(2")-Ia, ant(9')-Ia, aph(3')-IIIa, SAT-4, ant(6')-Ia), chloramphenicol resistance gene (cat), dihydrofolate reductase genes (dfrE, dfrF, dfrG), and lincosamide resistance genes (InuB, InuG).
In Vitro Pharmacodynamic Analyses Help Guide the Treatment of Multidrug-Resistant Enterococcus faecium and Carbapenem-Resistant Enterobacter cloacae Bacteremia in a Liver Transplant Patient.
The study identifies various AMR genes and mutations in Enterococcus faecium and Enterobacter hormaechei isolates from a liver transplant patient, highlighting their roles in resistance to multiple antibiotics.
Clinical Performance of the Novel GenMark Dx ePlex Blood Culture ID Gram-Positive Panel.
The GenMark Dx ePlex Blood Culture Identification Gram-Positive Panel effectively identifies 20 Gram-positive bacteria and detects four antimicrobial resistance genes: mecA, mecC, vanA, and vanB.
Species and drug susceptibility profiles of staphylococci isolated from healthy children in Eastern Uganda.
The study identified several AMR genes including mecA, vanA, vanB, aac(6')-Ie-aph(2'')-Ia, ant(4')-Ia, and aph(3')-IIIa in staphylococci isolated from healthy children in Eastern Uganda. These genes were associated with resistance to methicillin, vancomycin, and aminoglycosides.
Should we leave the paper currency? A microbiological examination.
The study identified various antimicrobial resistance genes including mecA, vanA, blaTEM, blaSHV, blaCTX-M-1, blaCTX-M-2, blaKPC, and blaOXA-48 in bacteria isolated from Turkish banknotes, highlighting the potential role of paper currency in spreading pathogens and antimicrobial resistance.
High prevalence of Clostridiodes diffiicle PCR ribotypes 001 and 126 in Iran.
The study identified vanA, tetM, gyrA, and gyrB genes associated with vancomycin, tetracycline, and fluoroquinolone resistance in Clostridiodes difficile strains. Mutations in gyrA and gyrB were linked to fluoroquinolone resistance.
First Report of the Local Spread of Vancomycin-Resistant Enterococci Ascribed to the Interspecies Transmission of a vanA Gene Cluster-Carrying Linear Plasmid.
The study reports the first local spread of vancomycin-resistant enterococci due to the transmission of a linear plasmid carrying the vanA gene cluster, highlighting the role of plasmid-mediated horizontal gene transfer in the spread of antimicrobial resistance.
Value of multiplex PCR for detection of antimicrobial resistance in samples retrieved from patients with orthopaedic infections.
The study evaluated the performance of multiplex PCR (mPCR) for detecting antimicrobial resistance genes in clinical samples from patients with orthopaedic infections. It identified several resistance genes, including mecA, mecC, aac(6')/aph(2''), ermA, ermC, rpoB, vanA, vanB, ctx-M, blaNDM, blaOXA-23, blaOXA-24, blaOXA-48, blaOXA-58, blaIMP, blaKPC, gyrA83, gyrA87, and aacA4, which confer resistance to various antibiotics such as oxacillin, aminoglycosides, macrolides/lincosamides, rifampin, vancomycin, third-generation cephalosporins, carbapenems, and fluoroquinolones.
Emergence of vanA-Type Vancomycin-Resistant Enterococcus faecium ST 78 Strain with a rep2-Type Plasmid Carrying a Tn1546-Like Element Isolated from a Urinary Tract Infection in China.
The study identifies a vanA-type vancomycin-resistant Enterococcus faecium ST78 strain carrying a rep2-type plasmid with a Tn1546-like element. The strain exhibits resistance to multiple antibiotics, including vancomycin, teicoplanin, and aminoglycosides, due to the presence of the vanA, ant(6)-Ia, aph(3')-III, aac(6')-Ii, and msr(C) genes.
Impact of vanA-Positive Enterococcus faecium Exhibiting Diverse Susceptibility Phenotypes to Glycopeptides on 30-Day Mortality of Patients with a Bloodstream Infection.
The study found that vanA-positive Enterococcus faecium isolates were associated with increased 30-day mortality in patients with bloodstream infections, highlighting the significance of vanA as a resistance determinant.
Next-Generation Sequencing and MALDI Mass Spectrometry in the Study of Multiresistant Processed Meat Vancomycin-Resistant Enterococci (VRE).
The study identified multiple AMR genes in vancomycin-resistant enterococci (VRE) isolated from processed meat, including vanA, vanC1, erm(B), aac(6')-Ii, aadE, ant(9)-Ia, lsa(E), msr(C), lnu(B), tet(M)+tet(L), dfrG, dfrK, adeC, and efmA, which confer resistance to various antibiotics such as vancomycin, erythromycin, tetracycline, aminoglycosides, and trimethoprim.
Vancomycin and nisin A are effective against biofilms of multi-drug resistant Staphylococcus aureus isolates from human milk.
The study identified vanA as a gene responsible for vancomycin resistance in Staphylococcus aureus isolates from human milk, highlighting its role in biofilm formation and resistance to antimicrobial agents.
Rapid detection of antibiotic resistance genes in lactic acid bacteria using PMMA-based microreactor arrays.
The study presents a PMMA-based microreactor array for rapid detection of antibiotic resistance (AR) genes in lactic acid bacteria (LABs). Six AR genes, including strA, strB, vanA, vanB, tetM, and tetS, were successfully detected using LAMP and colorimetric methods.
One year cross-sectional study in adult and neonatal intensive care units reveals the bacterial and antimicrobial resistance genes profiles in patients and hospital surfaces.
The study identified several antimicrobial resistance (AMR) genes, including mecA, bla CTX-M-1 group, bla SHV-like, bla KPC-like, and vanA, in both patient and hospital surface samples from adult and neonatal intensive care units (ICU and NICU). These genes were found to be prevalent in various bacterial species, highlighting the widespread nature of AMR in hospital environments.
Evaluation of commercial veterinary probiotics containing enterococci for transferrable vancomycin resistance genes.
The study identified the presence of the vanA gene, which confers vancomycin resistance, in two out of 36 commercial veterinary probiotics containing Enterococcus spp. DNA.
A silent outbreak of vancomycin-resistant Enterococcus faecium in a neonatal intensive care unit.
The study identified a silent outbreak of vancomycin-resistant Enterococcus faecium (VRE-fm) in a neonatal intensive care unit (NICU). All isolates showed high-level resistance to vancomycin, and the vanA gene was detected in all isolates, while the vanB gene was absent.
Antibiotic Resistance in Nosocomial Bacteria Isolated from Infected Wounds of Hospitalized Patients in Czech Republic.
The study identified several AMR genes, including blaCTX-M, blaTEM-1, blaOXA-1, blaSHV, mecA, vanA, and vanB, which confer resistance to beta-lactams, methicillin, and vancomycin in various bacterial isolates from infected wounds in Czech hospitals.
Biofilm Synthesis and other Virulence Factors in Multidrug-Resistant Uropathogenic Enterococci Isolated in Northern India.
The study identified vanA and vanB genes as the primary contributors to vancomycin resistance in multidrug-resistant uropathogenic enterococci. These genes were detected in 14 and 5 strains, respectively. Additionally, the research highlighted the expression of various virulence factors such as biofilm, caseinase, and gelatinase, which are linked to the pathogenicity of these bacteria.
Complete Genomic Analysis of VRE From a Cattle Feedlot: Focus on 2 Antibiotic Resistance.
The study identified multiple antibiotic resistance genes in vancomycin-resistant enterococci (VRE) isolates from a cattle feedlot, including vanC1, vanC2/C3, vanXY-C, VanR, macA, macB, rlmA (II), erm(A), aac(6')-la, blaEC, tet(A), tet(L), S10p, gyrA, gyrB, msbA, S12p, rpoB, mdfA/cmr, liaF, liaR, liaS, bcrC, mprF, pgsA, ef-G, ef-TU, ddl, alr, kasA, isotRNA, inhA, fabl, murA, folA, and Dfr, which confer resistance to various antibiotics such as vancomycin, macrolides, aminoglycosides, β-lactams, tetracyclines, quinolones, and others.
Alternative vanHAX promoters and increased vanA-plasmid copy number resurrect silenced glycopeptide resistance in Enterococcus faecium.
The study identifies the vanA gene on a plasmid as the primary determinant of glycopeptide resistance in a vancomycin-susceptible Enterococcus faecium isolate that reverts to a resistant phenotype upon vancomycin exposure. The resistance is associated with a 44 bp deletion in the vanHAX promoter region and increased plasmid copy number.
Molecular characterization of Staphylococcus aureus isolated from hospital acquired sepsis in pediatrics, relation to antibiotics, resistance and virulence genes.
The study identified methicillin-resistant Staphylococcus aureus (MRSA) strains with high prevalence of mecA gene and reduced vancomycin susceptibility. No van genes were found, but the presence of fnBPA and PVL virulence genes was noted.
Characterization of Enterococci- and ESBL-Producing Escherichia coli Isolated from Milk of Bovides with Mastitis in Egypt.
The study identified several AMR genes in Enterococcus and ESBL-producing E. coli isolates from bovine mastitis cases in Egypt, including erm(B), tetL, aac-aphD, vanA, and vanB.
A Preliminary Study: Antibiotic Resistance of Escherichia coli and Staphylococcus aureus from the Meat and Feces of Various South African Wildlife Species.
The study identified antibiotic resistance genes in Escherichia coli and Staphylococcus aureus from wildlife meat and feces, including blaCMY, aadA, sul1, sul2, tetA, tetB, tetK, tetL, tetM, vanA, vanB, and blaZ, which conferred resistance to ampicillin, streptomycin, sulfonamides, tetracycline, vancomycin, and penicillin.
Rapid and Ultrasensitive Detection of Mutations and Genes Relevant to Antimicrobial Resistance in Bacteria.
The study presents a nanosensor-based assay for detecting antimicrobial resistance mutations and genes, including ampR D135G and G154R mutations and vanA, vanB, and vanD genes in Pseudomonas aeruginosa and Enterococcus faecium.
Genetic mechanisms and correlated risk factors of antimicrobial-resistant ESKAPEE pathogens isolated in a tertiary hospital in Malaysia.
The study identified several AMR genes and mutations in ESKAPEE pathogens, including vanA, vanB, blaTEM, blaSHV, blaCTX-M, blaOXA, blaVEB, blaVIM, blaNDM, aac(6')-Ib, aadB, ermC, qnrS1, and gyrA mutations, highlighting the prevalence of multidrug resistance in these isolates.
The Direct Semi-Quantitative Detection of 18 Pathogens and Simultaneous Screening for Nine Resistance Genes in Clinical Urine Samples by a High-Throughput Multiplex Genetic Detection System.
The study presents a high-throughput multiplex genetic detection system (UTI-HMGS) capable of semi-quantitative detection of 18 uropathogens and simultaneous screening for nine antibiotic resistance genes directly from clinical urine samples within 4 hours. The system demonstrated high sensitivity and specificity for the detection of uropathogens and resistance genes, with improved detection rates for several important uropathogens compared to conventional culture methods.
A Novel Biofilm Model System to Visualise Conjugal Transfer of Vancomycin Resistance by Environmental Enterococci.
The study describes a novel biofilm model system to visualize the conjugal transfer of vancomycin resistance mediated by the vanA gene in environmental enterococci.
Risk Factors for Mortality in Adult COVID-19 Patients Who Develop Bloodstream Infections Mostly Caused by Antimicrobial-Resistant Organisms: Analysis at a Large Teaching Hospital in Italy.
The study identified several antimicrobial resistance genes, including mecA, bla CTX-M-15, bla KPC, vanA, bla OXA-23, and a mutated FKS gene, in various pathogens causing bloodstream infections in COVID-19 patients.
Multiresistant Bacteria Isolated from Intestinal Faeces of Farm Animals in Austria.
The study identified several AMR genes, including CTX-M-1, CTX-M-14, SHV-12, TEM-52, and VanA, in multiresistant bacteria isolated from the intestinal faeces of farm animals in Austria.
Molecular epidemiology of vancomycin-resistant Enterococcus faecium clinical isolates in a tertiary care hospital in southern Thailand: a retrospective study.
The study identified the vanA gene as the sole vancomycin resistance determinant in all 90 VRE isolates, highlighting its significance in vancomycin resistance among Enterococcus faecium strains.
Effect of Vancomycin on Cytoplasmic Peptidoglycan Intermediates and van Operon mRNA Levels in VanA-Type Vancomycin-Resistant Enterococcus faecium.
The study characterizes the VanA-type vancomycin resistance mechanism in Enterococcus faecium, highlighting the role of the van operon genes (vanA, vanH, vanX, vanY, vanR, vanS) in replacing D-Ala-D-Ala with D-Ala-D-Lac in peptidoglycan, leading to vancomycin resistance.
Mitigating Antibiotic Resistance Genes in Wastewater by Sequential Treatment with Novel Nanomaterials.
The study demonstrates the effectiveness of novel nanomaterials in reducing antibiotic resistance genes (ARGs) in wastewater, including bla CTXM, erm B, qnr S, sul 1, tet O, mec A, van A, and intI 1.
Characterisation of ESKAPE Pathogens with Special Reference to Multidrug Resistance and Biofilm Production in a Nepalese Hospital.
The study identified the vanA gene as the primary determinant of vancomycin resistance in Enterococcus faecium isolates, highlighting its role in the spread of multidrug-resistant ESKAPE pathogens in a Nepalese hospital setting.
Vancomycin-resistant Enterococcus faecium COLONIZATION and Clostridium difficile infection in a HEMATOLOGIC patient.
The study reports the isolation of a VanA-type vancomycin-resistant Enterococcus faecium strain from a hematologic patient with Clostridium difficile infection, highlighting the significance of active surveillance for VRE colonization.
Comparing the Clinical Utility of Rapid Diagnostics for Treatment of Bloodstream Infections Using Desirability of Outcome Ranking Approach for the Management of Antibiotic Therapy (DOOR-MAT).
The study evaluated the clinical utility of two rapid diagnostic tests (RDTs) for bloodstream infections, focusing on their ability to detect resistance genes such as mecA, vanA, and CTX-M. The ePlex BCID panels showed higher positive percent agreement (PPA) compared to Verigene BC panels, indicating better performance in detecting these resistance markers.
Transmission dynamics of a linear vanA-plasmid during a nosocomial multiclonal outbreak of vancomycin-resistant enterococci in a non-endemic area, Japan.
The study characterizes the transmission dynamics of a linear vanA-plasmid (pIHVA) during a multiclonal outbreak of vancomycin-resistant enterococci (VRE) in a non-endemic area in Japan. The plasmid pIHVA was found to carry the vanA gene, which confers high-level resistance to vancomycin and teicoplanin.
Factors associated with elevated levels of antibiotic resistance genes in sewer sediments and wastewater.
The study identified several antibiotic resistance genes (ARGs) in sewer sediments and wastewater, including sul1, tet(O), tet(W), ermF, vanA, NDM-1, mcr-1, and mecA, highlighting the potential for ARG proliferation in sewer environments.
Role of CRISPR-Cas system on antibiotic resistance patterns of Enterococcus faecalis.
The study identified several AMR genes, including tetM, ermB, aac6'-aph(2"), aadE, ant(6), and vanA, which are associated with resistance to tetracycline, erythromycin, gentamicin, and vancomycin in Enterococcus faecalis isolates.
Antibiotic-resistant bacteria, antibiotic resistance genes, and antibiotic residues in wastewater from a poultry slaughterhouse after conventional and advanced treatments.
The study identified several antibiotic resistance genes (ARGs) in wastewater from a poultry slaughterhouse, including bla TEM, bla CTX-M-1, bla SHV-12, mcr-1, ermB, sul1, tetM, bla OXA-48, bla CMY-2, and vanA. These genes were found to confer resistance to various antibiotics such as beta-lactams, macrolides, sulfonamides, tetracyclines, carbapenems, and glycopeptides.
Prevalence and Characteristics of Staphylococcus aureus Isolated From Retail Raw Milk in Northern Xinjiang, China.
The study identified several antibiotic resistance genes in Staphylococcus aureus isolates from retail raw milk in northern Xinjiang, China, including blaZ, mecA, ermA, ermB, ermC, aacA-aphD, tetK, tetM, vanA, rpoB, linA, optrA, and cfr, which confer resistance to penicillin, methicillin, oxacillin, erythromycin, gentamicin, tetracycline, vancomycin, rifampin, clindamycin, linezolid, chloramphenicol, and florfenicol.
Antimicrobial Resistance of Enterococcus sp. Isolated from Sheep and Goat Cheeses.
The study identified the presence of vanA, ermB, ermA, ermC, and msrC genes in Enterococcus isolates from sheep and goat cheeses, contributing to resistance against vancomycin and erythromycin.
Vancomycin resistant Streptococcus equi subsp. equi isolated from equines suffering from respiratory manifestation in Egypt.
The study identified vancomycin-resistant Streptococcus equi subsp. equi isolates carrying the vanA gene, along with tetK, blaZ, and fexA genes, indicating resistance to vancomycin, tetracycline, penicillin, and chloramphenicol, respectively.
Prediction of Antimicrobial Resistance in Clinical Enterococcus faecium Isolates Using a Rules-Based Analysis of Whole-Genome Sequences.
The study identified several AMR genes and mutations in Enterococcus faecium isolates, including pbp5, vanA, vanB, aac(6')-Ie-aph(2")-Ia, gyrA, parC, tet(L), tet(M), tet(S), and 23S rRNA. These genes and mutations were validated experimentally and showed high accuracy in predicting antimicrobial resistance.
Genetic description of VanD phenotype vanA genotype in vancomycin-resistant Enterococcus faecium isolates from a Bone Marrow Transplantation Unit.
The study characterizes the genetic structure of vancomycin-resistant Enterococcus faecium isolates displaying a VanD phenotype with a vanA genotype, highlighting the presence of various resistance genes and genetic variations within the van transposon.
Antimicrobial resistance, virulence genes and biofilm formation in Enterococcus species isolated from milk of sheep and goat with subclinical mastitis.
The study identified several antimicrobial resistance genes, including blaZ, vanA, ermB, tetM, and optrA, in Enterococcus species isolated from subclinical mastitic milk. High rates of multidrug resistance were observed, particularly against oxacillin, vancomycin, and linezolid.
Occurrence and spread of antibiotic-resistant bacteria on animal farms and in their vicinity in Poland and Ukraine-review.
The review highlights the presence of antibiotic-resistant bacteria and resistance genes in the environments of animal farms in Poland and Ukraine, emphasizing the spread of multidrug-resistant strains such as MRSA and Salmonella. Key resistance genes identified include blaTEM, blaPSE, floR, tetA, tetB, tetC, tetG, cat1, dfrA1, dfrA5, dfrA7, dfrA12, dfrA17, sul1, sul2, sul3, ermB, tetL, tetW, tetM, blaZ, mecA, qnrS1, qnrS3, qnrB10, qnrB19, blaCTX-M-25, and blaOXA-21.
Molecular Confirmation of Vancomycin-Resistant Staphylococcus aureus with vanA Gene from a Hospital in Kathmandu.
The study confirms the presence of the vanA gene in vancomycin-resistant Staphylococcus aureus (VRSA) isolates, highlighting the emergence of vancomycin resistance in MRSA in Nepal.
Comparison of novel rapid diagnostic of blood culture identification and antimicrobial susceptibility testing by Accelerate Pheno system and BioFire FilmArray Blood Culture Identification and BioFire FilmArray Blood Culture Identification 2 panels.
The study evaluated the performance of the Accelerate Pheno system, BioFire FilmArray BCID, and BCID2 panels for rapid blood culture identification and antimicrobial susceptibility testing. It identified several AMR genes including bla KPC, bla NDM, bla OXA-48, bla VIM, bla IMP, mecA, vanA, vanB, mcr-1, and CTX-M, which confer resistance to carbapenems, beta-lactams, glycopeptides, polymyxins, and cephalosporins.
Prevalence of Vancomycin-Resistant Enterococci and Antimicrobial Residues in Wastewater and Surface Water.
The study identified vanA and vanB genes in vancomycin-resistant Enterococcus faecium isolates, along with tet(M) and erm(B) genes associated with tetracycline and macrolide resistance, respectively. Aminoglycoside resistance was mediated by aac(6′)-Ie-aph(2′)-Ia and aph(3′)-IIIa genes.
Faecal microbiota transplantation reduces amounts of antibiotic resistance genes in patients with multidrug-resistant organisms.
FMT reduces the expression of antibiotic resistance genes, particularly VanA and bla NDM, in patients colonized with multidrug-resistant organisms.
Methicillin- and Vancomycin-Resistant Staphylococcus aureus From Humans and Ready-To-Eat Meat: Characterization of Antimicrobial Resistance and Biofilm Formation Ability.
The study identified methicillin-resistant and vancomycin-resistant Staphylococcus aureus (MRSA and VRSA) in ready-to-eat meat and human samples, highlighting the presence of multidrug-resistant isolates with biofilm-forming abilities. Key resistance genes included mecA, vanA, and vanB, while biofilm-related genes icaA, icaB, icaC, and icaD were prevalent.
River Biofilms Microbiome and Resistome Responses to Wastewater Treatment Plant Effluents Containing Antibiotics.
The study identified various antibiotic resistance genes (ARGs) in river biofilms upstream and downstream of a wastewater treatment plant (WWTP), including qnrA, qnrS, mfsA, ermC, ermX, macB, mefA_10, cat, catB3, aadB, aph(3')-III, AAC(3)-Ib, bacA_1, blaPer-1, blaIMP, blaTEM, blaKPC, blaDHA, cblA, ermC, ermY, ermX, mdtL, cusF, copD, qacA, mecA, dfrF, arnA, sul1, sulA, vat(A), IS6100, ISS1N, Intl1, blaCTX-M, blaIMP, mefA_10, tolC, mdfF, acrA, dfrA27, aac(6')-IIa, vanA, intl3, and TTV. These genes were associated with resistance to various antibiotics such as fluoroquinolones, macrolides, chloramphenicol, aminoglycosides, beta-lactams, polymyxins, sulfonamides, and others. The study also found that the resistome composition varied between upstream and downstream sites, indicating the impact of WWTP effluents on the distribution of ARGs in river biofilms.
Epidemiological and genetic characteristics of vancomycin-resistant Enterococcus faecium isolates in a University Children's Hospital in Germany: 2019 to 2020.
The study identified vanA and vanB glycopeptide resistance genes in vancomycin-resistant Enterococcus faecium isolates, highlighting the genetic diversity and transmission dynamics within the hospital setting.
Distinguishing Clinical Enterococcus faecium Strains and Resistance to Vancomycin Using a Simple In-House Screening Test.
The study developed an in-house VREfm screening broth that effectively distinguishes vancomycin-resistant Enterococcus faecium (VREfm) from other enterococci. The screening broth was validated using multiplex PCR and broth microdilution, identifying vanA, vanB, vanC1, and vanC2/C3 genes as responsible for vancomycin resistance.
Antimicrobial Resistance, Biofilm Formation, and Virulence Genes in Enterococcus Species from Small Backyard Chicken Flocks.
The study identified several antimicrobial resistance (AMR) genes in Enterococcus species isolated from backyard chickens, including ermB, ermA, tetM, tetL, vanA, cat, and pbp5. These genes were associated with resistance to erythromycin, tetracycline, vancomycin, chloramphenicol, and ampicillin.
Incidence of Vancomycin-Resistant Staphylococcus aureus Strains among Patients with Urinary Tract Infections.
The study identified vancomycin-resistant Staphylococcus aureus (VRSA) strains among patients with urinary tract infections, highlighting the emergence of vancomycin resistance in S. aureus.
Diagnosis and Management of Bloodstream Infections With Rapid, Multiplexed Molecular Assays.
The study evaluates the performance of the Luminex VERIGENE Gram-Positive and Gram-Negative Blood Culture Tests for detecting bacterial pathogens and resistance markers in bloodstream infections. These tests show high accuracy in identifying gram-positive and gram-negative bacteria and their resistance mechanisms, including mecA, vanA, and vanB.
In Vivo Antibacterial Efficacy of Antimicrobial Peptides Modified Metallic Implants─Systematic Review and Meta-Analysis.
The study evaluated the antibacterial efficacy of antimicrobial peptide (AMP)-modified metallic implants in preventing bacterial infections in vivo, showing that AMP-coated implants significantly reduced bacterial counts compared to controls.
Antibiotic Resistance and Molecular Profiling of the Clinical Isolates of Staphylococcus aureus Causing Bovine Mastitis from India.
The study identified mecA and mecC as the primary genes responsible for methicillin resistance in S. aureus isolates causing bovine mastitis in India, with mecA being the most prevalent. VanA was not detected in any of the isolates.
Multiplex Microsphere PCR (mmPCR) Allows Simultaneous Gram Typing, Detection of Fungal DNA, and Antibiotic Resistance Genes.
The study presents a 10-plex mmPCR assay that detects Gram type, fungal DNA, and antibiotic resistance genes including mecA, vanA, vanB, and blaSHV-1.
Inhibition of the Vancomycin Resistance in Staphylococcus aureus in Egypt Using Silver Nanoparticles.
The study identified the presence of vanA and vanR genes in vancomycin-resistant Staphylococcus aureus (VRSA) isolates in Egypt, confirming the existence of VRSA strains and demonstrating the effectiveness of silver nanoparticles in inhibiting these resistant strains.
Aptamer-Targeted Drug Delivery for Staphylococcus aureus Biofilm.
The study identifies aptamer SA31 as a targeting agent for delivering antibiotics to S. aureus biofilms, demonstrating that aptamer-targeted liposomes loaded with vancomycin and rifampicin can effectively eradicate biofilms.
Rapid Detection of Bacterial Pathogens and Antimicrobial Resistance Genes in Clinical Urine Samples With Urinary Tract Infection by Metagenomic Nanopore Sequencing.
The study demonstrates the effectiveness of metagenomic nanopore sequencing (mNPS) for the rapid detection of bacterial pathogens and antimicrobial resistance genes (ARGs) in clinical urine samples from patients with urinary tract infections (UTIs). The mNPS method achieved high sensitivity and specificity for pathogen detection and successfully identified various ARGs, including blaCTX-M and vanA, which confer resistance to beta-lactam and vancomycin antibiotics, respectively.
Antimicrobial Susceptibility Testing for Enterococci.
The paper reviews antimicrobial susceptibility testing methods for Enterococcus faecalis and Enterococcus faecium, highlighting the roles of various AMR genes such as aac(6')-Ie-aph(2")-Ia, vanA, vanB, cfr, optrA, and poxtA in conferring resistance to aminoglycosides, vancomycin, and oxazolidinones.
Vancomycin-resistant Enterococcus faecium: should we screen on admission?
The study identified two cases of vanA-positive VRE among 93 patients admitted to the NICU, highlighting the importance of targeted screening in high-prevalence settings.
Resistome Analysis of Global Livestock and Soil Microbiomes.
The study identified numerous antimicrobial resistance genes (ARGs) in livestock and soil microbiomes, including tetracycline resistance genes (tet(W)_1, tet(Q)_1, tet(O)_1, tet(44)_1), macrolide resistance gene (ole(B)_1), colistin resistance genes (mcr-1.11, mcr-5.1, mcr-7.1), and vancomycin resistance genes (vanG, vanA-B, vanH-B, vanXY-G).
Molecular characterization of multidrug-resistant ESKAPEE pathogens from clinical samples in Chonburi, Thailand (2017-2018).
The study identified multiple AMR genes in ESKAPEE pathogens, including bla OXA-23, bla NDM, bla OXA-48-like, bla CTX-M group 1, bla CTX-M group 9, mcr-1, mcr-3, mecA, and vanA. These genes conferred resistance to various antibiotics such as carbapenems, beta-lactams, colistin, methicillin, and vancomycin.
Detection and molecular characterization of VRE isolates in Slovakia from stool samples positive for Clostridioides difficile toxins.
The study identified the prevalence of vanA and vanB genes in VRE isolates from stool samples positive for C. difficile toxins, highlighting the local dominance of the vanA genotype and its association with high resistance to vancomycin, teicoplanin, and occasionally linezolid.
A Closer Look at the Laboratory Impact of Utilizing ePlex Blood Culture Identification Panels: a Workflow Analysis Using Rapid Molecular Detection for Positive Blood Cultures.
The ePlex BCID panels accurately detected 5 pan targets and 42 antimicrobial resistance gene markers, including 31 mecA, 4 vanA, 6 CTX-M, and 1 KPC gene.
Genotypic characterization of vancomycin-resistant Enterococcus causing urinary tract infection in northern India.
The study identified vanA and vanB genes as the primary mechanisms of vancomycin resistance in Enterococcus isolates causing urinary tract infections in northern India. These genes were found in 15 and 5 isolates, respectively, and were associated with high levels of resistance to vancomycin and teicoplanin.
Exploring the mobilome and resistome of Enterococcus faecium in a One Health context across two continents.
The study identifies various AMR genes in Enterococcus faecium, including vanA, vanB, ermB, ermT, ermA, aad(6), aph(3')-IIIa, aac(6')-Ie-aph(2')-Ia, sat-4, tetM, tet(W/N/W), dfrG, dfrF, lnuB, optrA, and lsaE, which are associated with different habitats and geographic locations.
Molecular Typing Reveals Environmental Dispersion of Antibiotic-Resistant Enterococci under Anthropogenic Pressure.
The study identified multiple antibiotic resistance genes in Enterococcus isolates from various aquatic environments, highlighting the role of anthropogenic pressure in the spread of antibiotic-resistant enterococci.
Rapid Detection of vanA Resistance Gene from E. faecalis Clinical Isolates Using Duplex Loop-Mediated Isothermal Amplification and Triplex PCR Assay.
The study presents a rapid and sensitive method for detecting the vanA gene in E. faecalis clinical isolates using duplex-LAMP and triplex-PCR assays, demonstrating high sensitivity and specificity.
The resistomes of Mycobacteroides abscessus complex and their possible acquisition from horizontal gene transfer.
The study identifies numerous AMR genes in Mycobacteroides abscessus complex, highlighting the widespread presence of resistance to multiple antibiotic classes, including beta-lactams, aminoglycosides, glycopeptides, and others. Key findings include the detection of beta-lactamases like blaLAP-1 and blaTLA-2, 23S rRNA methyltransferases such as erm(33), erm(43), and erm(44), and various aminoglycoside modifying enzymes. Additionally, vancomycin resistance genes like vanA, vanB, and vanC were identified, along with efflux pump genes contributing to multidrug resistance.
Microbial Diversity and Pathogenic Properties of Microbiota Associated with Aerobic Vaginitis in Women with Recurrent Pregnancy Loss.
The study identified several AMR genes, including erm, tet, aac(6')-Ib, and vanA, in bacteria associated with aerobic vaginitis in women with recurrent pregnancy loss. These genes conferred resistance to various antibiotics such as erythromycin, tetracycline, kanamycin, gentamicin, and vancomycin.
Occurrence of vanHAX and Related Genes beyond the Actinobacteria Phylum.
The study identifies the presence of vanHAXRS and related genes in various bacterial classes beyond the Actinobacteria phylum, including Anaerolineae, Erysipelotrichia, Ktedonobacteria, Bacilli, and Clostridia. These genes are involved in glycopeptide resistance through cell-wall remodeling mechanisms.
Vancomycin heteroresistance among methicillin-resistant clinical isolates S. haemolyticus, S. hominis, S. simulans, and S. warneri.
The study identified vancomycin heteroresistance in methicillin-resistant clinical isolates of S. haemolyticus, S. hominis, S. simulans, and S. warneri. None of the tested strains carried the vanA or vanB genes, suggesting that the resistance mechanism is not due to these specific genes.
Web-based prediction of antimicrobial resistance in enterococcal clinical isolates by whole-genome sequencing.
The study evaluated the accuracy of whole-genome sequencing (WGS) for predicting antimicrobial resistance in enterococcal clinical isolates. It identified several AMR genes and mutations, including aac(6')-aph(2"), erm(B), erm(T), tet(L), tet(M), vanA, vanB, vanD, optrA, poxtA, and mutations in gyrA and parC, which were validated through genomic sequencing and phenotypic AST.
Respiratory microorganisms in acute pharyngitis patients: Identification, antibiotic prescription patterns and appropriateness, and antibiotic resistance in private primary care, central Malaysia.
The study identified vancomycin-resistant Staphylococcus aureus (VRSA) and methicillin-resistant S. aureus (MRSA) in patients with acute pharyngitis, highlighting the presence of antibiotic-resistant bacteria in the Malaysian community.
Antimicrobial resistance: mechanisms and implications
The review discusses various molecular mechanisms of antibiotic resistance, including beta-lactamases, aminoglycoside-modifying enzymes, tetracycline resistance genes, and efflux pumps, highlighting their roles in conferring resistance to multiple antibiotics.
Association of CRISPR-Cas System with the Antibiotic Resistance and Virulence Genes in Nosocomial Isolates of Enterococcus.
The study found that the CRISPR-Cas system is associated with reduced antibiotic resistance and virulence in Enterococcus isolates. Specific resistance genes such as ermB, aadE, ant(6), aac(6')-aph(2"), tetM, and vanA were identified in the isolates.
Validation and Application of Long-Read Whole-Genome Sequencing for Antimicrobial Resistance Gene Detection and Antimicrobial Susceptibility Testing.
The study validated the use of long-read whole-genome sequencing for detecting antimicrobial resistance genes and predicting antimicrobial susceptibility. Several beta-lactamase and carbapenemase genes were identified in various bacterial isolates, demonstrating their role in resistance to specific antibiotics.
Prevalence and multidrug resistance of Enterococcus species isolated from chickens at slaughterhouses in Nakhon Ratchasima Province, Thailand.
The study identified the presence of ESBL-TEM, bla TEM, intI1, mrc–1, and vanA genes in multidrug-resistant Enterococcus isolates from chickens and their meat products in Nakhon Ratchasima Province, Thailand.
Hospital-acquired and zoonotic bacteria from a veterinary hospital and their associated antimicrobial-susceptibility profiles: A systematic review.
The study identified several antimicrobial resistance genes, including mecA, blaCMY-2, vanA, and flo, associated with hospital-acquired and zoonotic bacteria in veterinary settings.
Virulence gene detection and antimicrobial resistance analysis of Enterococcus faecium in captive giant pandas (Ailuropoda melanoleuca) in China.
The study identified several AMR genes in E. faecium isolates from captive giant pandas, including aac(6')-aph(2''), aph(2'')-Id, vanA, cfr, and optrA, which confer resistance to aminoglycosides, vancomycin, and linezolid.
Characterization of antibiotic resistomes by reprogrammed bacteriophage-enabled functional metagenomics in clinical strains.
The study characterizes various antibiotic resistance genes (ARGs) using a novel functional metagenomics approach called DEEPMINE, which enables the identification of ARGs in multiple bacterial hosts, revealing species-specific resistance profiles and expanding the understanding of antibiotic resistance mechanisms.
Genomic Characterization of a Vancomycin-Resistant Strain of Enterococcus faecium Harboring a rep2 Plasmid.
The study identified a vancomycin-resistant Enterococcus faecium strain (SJ2) harboring the vanA gene on a rep2 plasmid. The strain exhibited resistance to multiple antibiotics, including vancomycin, and contained several other antimicrobial resistance genes.
Vancomycin Resistance in Enterococcus faecium from the Dallas, Texas, Area Is Conferred Predominantly on pRUM-Like Plasmids.
The study identifies vanA as the primary gene responsible for vancomycin resistance in Enterococcus faecium isolates from the Dallas, Texas, area, predominantly located on pRUM-like plasmids.
Genomic Analysis of Vancomycin-Resistant Staphylococcus aureus Isolates from the 3rd Case Identified in the United States Reveals Chromosomal Integration of the vanA Locus.
The study identifies the chromosomal integration of the vanA locus in vancomycin-resistant Staphylococcus aureus (VRSA) isolates, highlighting the role of plasmid pWC79 in multidrug resistance and the genetic mechanisms behind the emergence of VRSA.
Assessment of antibiotic resistance and biofilm formation of Enterococcus species isolated from different pig farm environments in Poland.
The study identified vancomycin-resistant Enterococcus faecalis and Enterococcus faecium strains with vanA, vanB, and vanD genotypes. These strains exhibited higher biofilm-forming capacity compared to susceptible strains.
Phenotypic and genotypic characterization of linezolid resistance and the effect of antibiotic combinations on methicillin-resistant Staphylococcus aureus clinical isolates.
The study identified linezolid resistance mechanisms in MRSA isolates, including mutations in domain V of 23 S rRNA (A2338T, T2504C, G2576T) and genes such as cfr(B), optrA, msrA, mecA, and vanA.
Development and evaluation of a centrifugal disk system for the rapid detection of multiple pathogens and their antibiotic resistance genes in urinary tract infection.
The study developed a centrifugal disk system (LCD) for the rapid detection of multiple pathogens and their antibiotic resistance genes (ARGs) in urinary tract infections (UTIs). The LCD platform demonstrated high specificity and sensitivity for detecting pathogens and ARGs, including beta-lactamases (SHV, TEM, CTX-M-1 group, CTX-M-9 group), carbapenemases (KPC, NDM, IMP, OXA-23, OXA-24, OXA-48), ampC beta-lactamases (DHA, CMY), glycopeptide resistance (VanA), and methicillin resistance (mecA).
Multicenter Evaluation of the BIOFIRE Blood Culture Identification 2 Panel for Detection of Bacteria, Yeasts, and Antimicrobial Resistance Genes in Positive Blood Culture Samples.
The BIOFIRE BCID2 Panel demonstrated high sensitivity and specificity for detecting bacteria, yeasts, and antimicrobial resistance genes in positive blood culture samples. It effectively identified various AMR genes such as CTX-M, IMP, KPC, NDM, OXA-48-like, VIM, mecA/C, mcr-1, and vanA/B in Enterobacterales and other pathogens.
Wastewater treatment plants, an "escape gate" for ESCAPE pathogens.
The study identifies several AMR genes and mutations in various pathogens found in wastewater treatment plants, highlighting the role of these facilities as reservoirs for antibiotic-resistant bacteria and genes.
Antimicrobial resistance in bacteria isolated from peridomestic Rattus species: A scoping literature review.
This scoping review identifies various antimicrobial resistance (AMR) genes in bacteria isolated from peridomestic Rattus species, including beta-lactamases (bla TEM, bla CTX-M, bla SHV, bla VIM, bla IMP, bla NDM-1), aminoglycoside resistance genes (strA, strB, aadA, aphA), sulfonamide resistance genes (sul1, sul2, sul3), tetracycline resistance genes (tetA, tetB, tet34), trimethoprim resistance genes (dfrA1, dfrA17, dfr14), quinolone resistance genes (qnrB1), and others.
The intestinal carrier status of Enterococcus spp. in children: clonal diversity and alterations in resistance phenotypes before and after admission to a pediatric intensive care unit.
The study identified the presence of vancomycin-resistant Enterococcus (VRE) and high-level gentamicin-resistant (HLGR) Enterococcus in children admitted to a pediatric intensive care unit (PICU). The vanA gene was detected in a significant proportion of VRE isolates.
Potential of Natural Phenolic Compounds as Antimicrobial Agents against Multidrug-Resistant Staphylococcus aureus in Chicken Meat.
The study identified several antimicrobial resistance genes in multidrug-resistant Staphylococcus aureus isolates from chicken meat, including aacA-aphD, blaZ, mecA, apmA, and vanA. These genes were experimentally validated and associated with resistance to various antibiotics.
Partnering essential oils with antibiotics: proven therapies against bovine Staphylococcus aureus mastitis.
The study identified mecA and vanA genes in Staphylococcus aureus isolates, which confer resistance to cefoxitin and vancomycin, respectively. These genes were experimentally validated through PCR assays.
Characterization of Vancomycin Resistant Enterococci and Drug Ligand Interaction between vanA of E. faecalis with the Bio-Compounds from Aegles marmelos.
The study identifies the vanA gene in vancomycin-resistant Enterococcus faecalis (VRE) strains and evaluates the interaction of Aegles marmelos bio-compounds with the VanA protein.
Characterization of a Tigecycline-, Linezolid- and Vancomycin-Resistant Clinical Enteroccoccus faecium Isolate, Carrying vanA and vanB Genes.
The study identifies the presence of vanA and vanB genes, along with poxtA, fexB, tet(M), and tet(L) in a multidrug-resistant Enterococcus faecium isolate, highlighting the coexistence of multiple resistance mechanisms.
Multicenter evaluation of the BIOFIRE Joint Infection Panel for the detection of bacteria, yeast, and AMR genes in synovial fluid samples.
The BIOFIRE Joint Infection Panel demonstrated high sensitivity and specificity for detecting bacteria and antimicrobial resistance (AMR) genes in synovial fluid samples. It effectively identified various AMR genes, including mecA/C and MREJ (MRSA), vanA/B, CTX-M, OXA-48-like, IMP, KPC, NDM, and VIM, in multiple bacterial species.
Multidrug Resistance in Enterococci Isolated from Cheese and Capable of Producing Benzalkonium Chloride-Resistant Biofilms.
The study identified vancomycin resistance genes (vanA), erythromycin resistance genes (ermC), beta-lactam resistance gene (pbp5), aminoglycoside resistance gene (aac(6')-Ie-aph(2'')-Ia), and penicillin resistance gene (blaZ) in Enterococcus isolates from cheese. These isolates also showed multidrug resistance and biofilm formation capabilities.
Phylogenomics, phenotypic, and functional traits of five novel (Earth-derived) bacterial species isolated from the International Space Station and their prevalence in metagenomes.
Five novel bacterial species were isolated from the International Space Station (ISS) and characterized. These species, Arthrobacter burdickii, Leifsonia virtsii, Leifsonia williamsii, Paenibacillus vandeheii, and Sporosarcina highlanderae, were identified through phylogenomic, phenotypic, and functional analyses. Their genomes were sequenced, and they were distinguished from known species using ANI and dDDH values, as well as gyrB gene sequence similarities.
Molecular characterization and biofilm formation ability of Enterococcus faecium and Enterococcus faecalis bloodstream isolates from a Chinese tertiary hospital in Beijing.
The study identified the vanA gene as the primary determinant of vancomycin resistance in Enterococcus faecium and Enterococcus faecalis bloodstream isolates. All vancomycin-resistant strains carried the vanA gene.
Routine Metagenomics Service for ICU Patients with Respiratory Infection.
The study highlights the utility of respiratory metagenomics (RMg) in detecting clinically relevant pathogens and antimicrobial resistance (AMR) genes, including vanA, blaSHV, and blaCXT-M, which guide antimicrobial treatment and infection control strategies in ICU patients with respiratory infections.
Multi-omics analysis of hospital-acquired diarrhoeal patients reveals biomarkers of enterococcal proliferation and Clostridioides difficile infection.
The study identifies vanA and vanB as the primary vancomycin resistance genes in Enterococcus faecium isolates from hospital-acquired diarrheal patients, highlighting their association with extended antibiotic exposure and enterococcal proliferation.
Dynamics of antimicrobial resistance and virulence of staphylococcal species isolated from foods traded in the Cape Coast metropolitan and Elmina municipality of Ghana.
The study identified multiple antimicrobial resistance genes in staphylococcal isolates from food samples, including genes conferring resistance to tetracycline, gentamicin, methicillin, erythromycin, and vancomycin. High prevalence of multidrug resistance was observed, highlighting the potential health risks associated with food-borne staphylococci.
Targeted elimination of Vancomycin resistance gene vanA by CRISPR-Cas9 system.
The study demonstrates that the CRISPR-Cas9 system can effectively eliminate the vanA gene from plasmids, thereby reducing vancomycin resistance in Enterococcus faecium and Escherichia coli.
Draft genome sequencing data of Enterococcus faecium BT22, a vancomycin-resistant opportunistic pathogen isolated from hospital effluents.
The study identified 12 antibiotic resistance genes and one virulence gene in strain BT22, including genes conferring resistance to aminoglycosides, macrolides, tetracyclines, and vancomycin.
High Incidence of Multiple-Drug-Resistant Pheromone-Responsive Plasmids and Transmissions of VanA-Type Vancomycin-Resistant Enterococcus faecalis between Livestock and Humans in Taiwan.
The study identifies vanA, ermB, and bcrABDR genes in VanA-type vancomycin-resistant Enterococcus faecalis isolates from Taiwan, highlighting the role of pheromone-responsive conjugative plasmids in transmitting multiple-drug resistance between livestock and humans.
Rapid Detection of Antimicrobial Resistance Genes in Critically Ill Children Using a Custom TaqMan Array Card.
The study validated a custom AMR-TAC for detecting AMR genes in critically ill children, revealing the presence of various AMR genes such as ermB, mecA, mecC, bla CTX-M-1, bla CTX-M-9, vanA, and vanB in respiratory and fecal samples.
Pathogenic Potential and Antibiotic Susceptibility: A Comprehensive Study of Enterococci from Different Ecological Settings.
The study identified several antibiotic resistance genes in Enterococcus isolates, including ermB (macrolide resistance), vanA (glycopeptide resistance), aphA3 (aminoglycoside resistance), aac6′-aph2″ (aminoglycoside resistance), and cat pIP501 (chloramphenicol resistance).
Enterococci, Van Gene-Carrying Enterococci, and Vancomycin Concentrations in the Influent of a Wastewater Treatment Plant in Southeast Germany.
The study identified vanA and vanB genes in vancomycin-resistant Enterococcus faecium isolates from wastewater, demonstrating high-level resistance to vancomycin.
Genetic analysis of vancomycin-variable Enterococcus faecium clinical isolates in Italy.
The study identifies vancomycin-variable Enterococcus faecium isolates (VVE Ita-S) in Italy, highlighting the presence of vanA gene clusters on plasmids and the potential for reversion to vancomycin resistance through deletions in the Tn 1546 transposon.
Development and validation of multiplex real-time PCR for simultaneous detection of six bacterial pathogens causing lower respiratory tract infections and antimicrobial resistance genes.
The study developed and validated multiplex real-time PCR assays for the simultaneous detection of six bacterial pathogens and 14 antimicrobial resistance (AMR) genes directly from respiratory samples. The assays demonstrated high sensitivity and specificity for detecting pathogens and AMR genes, with particular emphasis on beta-lactamases, macrolide resistance, and methicillin resistance.
Genome mining of Escherichia coli WG5D from drinking water source: unraveling antibiotic resistance genes, virulence factors, and pathogenicity.
The study identifies multiple antibiotic resistance genes in E. coli WG5D, including multidrug efflux pumps and genes conferring resistance to various antibiotics such as fluoroquinolones, cephalosporins, and glycopeptides.
Novel spore-forming species exhibiting intrinsic resistance to third- and fourth-generation cephalosporins and description of Tigheibacillus jepli gen. nov., sp. nov.
The study identifies Tigheibacillus jepli as a novel spore-forming species with intrinsic resistance to third- and fourth-generation cephalosporins, lacking known β-lactamases, suggesting resistance via variant penicillin-binding proteins. It also reports three vancomycin resistance-related ARG in T. jepli.
Antimicrobial resistance markers distribution in Staphylococcus aureus from Nsukka, Nigeria.
The study identified several antimicrobial resistance genes in Staphylococcus aureus isolates from Nsukka, Nigeria, including MecA, VanA, VanB, ErmB, and ErmC, which confer resistance to methicillin, vancomycin, and macrolides.
Comprehensive analysis of antimicrobial resistance in the Southwest Indian Ocean: focus on WHO critical and high priority pathogens.
The study identifies multiple carbapenem-resistant Enterobacterales, Acinetobacter spp., Pseudomonas spp., and vancomycin-resistant Enterococcus spp. with various resistance genes such as bla NDM-1, bla NDM-4, bla NDM-5, bla NDM-6, bla OXA-181, bla IMI-1, bla OXA-23, bla OXA-24, bla OXA-58, bla VIM-2, and vanA.
Screening of antibiogram, virulence factors, and biofilm production of Staphylococcus aureus and the bio-control role of some probiotics as alternative antibiotics.
The study identified the presence of mecA, ermA, and vanA genes in S. aureus isolates, indicating resistance to methicillin, erythromycin, and vancomycin, respectively. Additionally, the sea and sed genes were detected, which are associated with staphylococcal enterotoxins.
Heterogeneous Antibiotic Resistance Gene Removal Impedes Evaluation of Constructed Wetlands for Effective Greywater Treatment.
The study identifies several antibiotic resistance genes (ARGs) in greywater and filter bed samples, including blaTEM, sul1, intI1, tetG, tetW, and others, indicating the presence of resistance to beta-lactams, sulfonamides, tetracyclines, and other antibiotics. The research highlights the variability in ARG removal efficiency by constructed wetlands and the potential for ARG proliferation in treated greywater.
Detection of Vancomycin Resistant Genes in Intrinsically Antibiotic Resistant Bacteria from the Gut Microbiota of Indonesian Individuals.
The study identified vancomycin-resistant genes (vanA, vanB, vanC, vanD, vanE, vanG) in intrinsically antibiotic-resistant bacteria from the gut microbiota of Indonesian individuals, highlighting the potential role of these bacteria in the spread of antibiotic resistance through horizontal gene transfer.
The Genetic Landscape of Antimicrobial Resistance Genes in Enterococcus cecorum Broiler Isolates.
The study identified several antimicrobial resistance genes (ARGs) in Enterococcus cecorum isolates, including ant(6)-la, ermB, lsaE, tet(M), tet(L), and vanA, which are associated with resistance to aminoglycosides, macrolides, lincosamides, tetracyclines, and glycopeptides. Additionally, point mutations in GyrA, GyrB, ParC, and PBP2x were found to contribute to resistance against enrofloxacin and β-lactam antibiotics.
Suppression PCR-Based Selective Enrichment Sequencing for Pathogen and Antimicrobial Resistance Detection on Cell-Free DNA in Sepsis-A Targeted, Blood Culture-Independent Approach for Rapid Pathogen and Resistance Diagnostics in Septic Patients.
The study presents a novel method called SUPSETS for detecting pathogens and antimicrobial resistance genes (AMRs) in sepsis using cell-free DNA. It identifies tetracycline resistance (tetB), vancomycin resistance (vanA), and macrolide resistance (ermB) in clinical samples.
Emergence and ongoing outbreak of ST80 vancomycin-resistant Enterococcus faecium in Guangdong province, China from 2021 to 2023: a multicenter, time-series and genomic epidemiological study.
The study identifies the emergence of a new vanA-harbouring plasmid in ST80 vancomycin-resistant Enterococcus faecium (VREfm) in Guangdong, China, contributing to an outbreak. The plasmid contains a vanA cassette embedded in a Tn1546-like structure and lacks conjugation-related genes, suggesting clonal transmission as the primary mode of spread.
Characterization of resistance and virulence factors in livestock-associated methicillin-resistant Staphylococcus aureus.
The study identified several AMR genes including mecA, mecC, tetM, ermA, ermC, vanA, and vanC in livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) isolates. These genes conferred resistance to various antibiotics such as penicillin, tetracycline, erythromycin, and vancomycin. Additionally, virulence factors like PVL, tsst-1, icaA, and icaB were prevalent in the isolates.
A novel pathogenic species of genus Stenotrophomonas: Stenotrophomonas pigmentata sp. nov.
The study identifies a novel pathogenic species, Stenotrophomonas pigmentata sp. nov., which exhibits resistance to multiple antibiotics, including β-lactams, carbapenems, and trimethoprim-sulfamethoxazole. Several multidrug resistance efflux pump and antibiotic resistance genes were found in its genome.
Occurrence of Enterococci in the Process of Artisanal Cheesemaking and Their Antimicrobial Resistance.
The study identified the presence of vanA and tetM genes in Enterococcus isolates, indicating resistance to vancomycin and tetracycline, respectively. These genes were found in various Enterococcus species, highlighting the potential public health concerns related to antimicrobial resistance in artisanal cheesemaking processes.
Early identification of the nosocomial spread of vancomycin-resistant Enterococcus faecium by Fourier-transform infrared spectroscopy and performance comparison with PFGE and WGS.
The study identifies the vanA gene as the primary determinant of vancomycin and teicoplanin resistance in the outbreak strain of vancomycin-resistant Enterococcus faecium (VREfm). Additionally, the poxtA gene was found to confer linezolid resistance in VREfm isolates.
Vancomycin-resistant Staphylococcus aureus (VRSA) can overcome the cost of antibiotic resistance and may threaten vancomycin's clinical durability.
The study shows that VRSA can overcome the fitness cost of vancomycin resistance through laboratory evolution, with mutations in the ddl gene playing a key role in this adaptation.
Genetic basis of emerging vancomycin, linezolid, and daptomycin heteroresistance in a case of persistent Enterococcus faecium bacteremia.
The study identifies vanA and vanM operons as key determinants of glycopeptide resistance in Enterococcus faecium, along with rRNA and fabF mutations associated with linezolid and daptomycin resistance, respectively.
Development and application of a rapid visual detection technique for VanA gene in vancomycin-resistant Enterococcus faecium.
The study developed a rapid visual detection method for the VanA gene in vancomycin-resistant Enterococcus faecium using MIRA-LFS technology, demonstrating high sensitivity and specificity.
Presence of multiple van genes among glycopeptide non-susceptible Staphylococcus aureus exhibiting in vitro MIC creep phenomenon: A study from north-east India.
The study identified multiple van genes (vanA, vanB, vanD) in glycopeptide non-susceptible Staphylococcus aureus isolates, highlighting the presence of resistance mechanisms that contribute to in vitro MIC creep phenomena.
Prevalence and Molecular Epidemiology of Intestinal Colonization by Multidrug-Resistant Bacteria among Hematopoietic Stem-Cell Transplantation Recipients: A Bulgarian Single-Center Study.
The study identified several AMR genes including bla CTX-M, bla TEM, bla SHV, bla VIM, and vanA in multidrug-resistant bacteria isolated from HSCT recipients. These genes were associated with resistance to various antibiotics such as beta-lactams, carbapenems, and glycopeptides.
Cytotoxic Activity of Vancomycin-Resistant Enterococci Isolated from Hospitalised Patients.
The study identified aac(6')-Ie-aph(2'')-Ia and aph(3')-IIIa genes contributing to aminoglycoside resistance, along with vanA gene causing vancomycin resistance in VRE isolates. Linezolid and tigecycline resistance were also observed.
Development of a One-Step Multiplex qPCR Assay for Detection of Methicillin and Vancomycin Drug Resistance Genes in Antibiotic-Resistant Bacteria.
The study developed a one-step multiplex qPCR assay for the detection of methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE) by targeting the mecA, vanA, and vanB genes.
Reduced vancomycin susceptibility in Staphylococcus aureus clinical isolates: a spectrum of less investigated uncertainties.
The study identifies the vanA gene in 5 S. aureus isolates, with 3 of them showing vancomycin susceptibility and 2 showing vancomycin intermediate susceptibility. It also highlights the presence of hVISA and the potential for silent vancomycin resistance.
Limited Evidence of Spillover of Antimicrobial-Resistant Klebsiella pneumoniae from Animal/Environmental Reservoirs to Humans in Vellore, India.
The study found that clinical and hospital sewage isolates of Klebsiella pneumoniae had a higher number of AMR genes compared to livestock isolates, suggesting that AMR is more prevalent in human-associated settings. Several beta-lactamase genes, including blaCTX-M, blaNDM, blaKPC, and blaOXA-48, were detected in clinical isolates, contributing to resistance against carbapenems and other antibiotics. Other AMR genes such as qnrS1, aac(6')-Ib, aadA, ermB, mefA, tet(A), mph(A), cat, cfr, vanA, mcr-1, fosA, sul1, and dfrA1 were also identified, highlighting the diversity of resistance mechanisms in K. pneumoniae.
Guardians of resistance and virulence: detection of mec, femA, Van, pvl, hlg and spa genes in methicillin and vancomycin-resistant Staphylococcus aureus from clinical and food samples in Southwestern Nigeria.
The study identified mecA, mecC, femA, vanA, vanB, pvl, hlg, and spa genes in methicillin and vancomycin-resistant Staphylococcus aureus isolates from clinical and food samples in Southwestern Nigeria.
Evaluation of DNA extraction kits for long-read shotgun metagenomics using Oxford Nanopore sequencing for rapid taxonomic and antimicrobial resistance detection.
The study evaluated DNA extraction kits for long-read metagenomics and identified several AMR genes, including ctx-m-65, kpc-2, oxa-66, pdc-167, oxa-486, vanA, and mecA, in the ESKAPE Mock community using the QIAamp PowerFecal Pro DNA kit.
New multilocus sequence typing scheme for Enterococcus faecium reveals sequential outbreaks of vancomycin-resistant E. faecium ST1162 and ST610 in a Japanese tertiary medical center.
The study identifies vanA as the glycopeptide resistance gene in all 68 VREfm isolates and evaluates the Bezdíček MLST scheme for its effectiveness in tracking outbreaks of vancomycin-resistant E. faecium.
Compounds Containing 2,3-Bis(phenylamino) Quinoxaline Exhibit Activity Against Methicillin-Resistant Staphylococcus aureus, Enterococcus faecalis, and Their Biofilms.
The study identified two quinoxaline derivatives, compounds 25 and 31, which exhibit significant antimicrobial activity against methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococcus faecalis (VRE) strains, with MIC values ranging from 0.25 to 1 mg/L.
Evaluation of the effect of BioFire FilmArray nested multiplex polymerase chain reaction method on rapid pathogen identification and antimicrobial stewardship in sepsis.
The study evaluated the BioFire FilmArray Blood Culture Identification 2 panel for rapid pathogen identification and antimicrobial resistance detection in sepsis patients, demonstrating high concordance with conventional methods and improved turnaround time for antimicrobial stewardship.
First report on comprehensive genomic analysis of a multidrug-resistant Enterobacter asburiae isolated from diabetic foot infection from Bangladesh.
The study identifies multiple antimicrobial resistance genes, including blaACT-2, fosA2, vanA, vanB, and vanG, in a multidrug-resistant Enterobacter asburiae isolate from a diabetic foot infection in Bangladesh.
Caught Between Stewardship and Resistance: How to Treat Acute Complicated Diverticulitis in Areas of Low Antimicrobial Susceptibility?
The study identified multidrug-resistant (MDR) pathogens including Escherichia coli and Klebsiella pneumoniae with extended-spectrum beta-lactamase (ESBL) production, and Enterococcus spp. with vancomycin resistance (VRE).
Antibiotic Resistance in Mammalian Wild Game: A Meta-Analysis
The study presents a comprehensive meta-analysis of antibiotic resistance in bacteria isolated from mammalian wild game, highlighting the prevalence of various AMR genes and mutations across different bacterial species.
Clinical evaluation of a multiplex droplet digital PCR for diagnosing suspected bloodstream infections: a prospective study.
The study evaluated a multiplex droplet digital PCR (ddPCR) assay for diagnosing bloodstream infections, identifying key AMR genes such as bla KPC, bla NDM, bla VIM, bla IMP, bla OXA48, vanA, vanM, and mecA in clinical isolates.
Colonization of methicillin-resistant Staphylococcus aureus and vancomycin-resistant Enterococci and its associated factors in cancer patients at the University of Gondar Comprehensive Specialized Hospital, Northwest Ethiopia.
The study found a significant prevalence of methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococci (VRE) colonization among cancer patients, highlighting the need for improved antibiotic stewardship and early detection strategies.
Abundance of clinically relevant antimicrobial resistance genes in the golden jackal (Canis aureus) gut.
The study identified a high prevalence of clinically relevant antimicrobial resistance genes in golden jackals, including beta-lactamases (bla TEM-1, bla CTX-M-15, bla SHV), quinolone resistance (qnrS), and class 1 integrons (Int1).
Evaluation of the Diagnostic Accuracy of the T2Resistance Panel (Research Use Only) in Patients With Possible Bacterial Bloodstream Infections.
The T2R Panel demonstrated high specificity (100%) for detecting 13 antibiotic resistance genes, including bla CTX-M-14/15, mec A/C, and van A/B, in patients with bacterial bloodstream infections. It showed 100% sensitivity for bla CTX-M-14/15 and 100% sensitivity for van A/B, but lower sensitivity (17%) for mec A/C in coagulase-negative staphylococci.
Characterization and ex vivo modelling of endodontic infections from the Arabian Gulf region.
The study identified several antibiotic resistance genes, including bla, aac(6')-Ib, tet(M), qnrS1, erm(B), and mcr-1, in endodontic infection samples from the Arabian Gulf region. These genes were found to confer resistance to various antibiotics, highlighting the presence of multidrug-resistant bacteria in these infections.
Virulence and resistance gene analysis of Rothia nasimurium by whole gene sequencing.
The study identified multiple AMR genes in Rothia nasimurium Y1, including vanA, vanC, vanB, vanE, vanD, vanG, vanF, vanM, vanL, vanO, vanN, mtrA, vanRA, arlR, vanRI, vanRB, vanRC, vanRD, vanRF, vanRG, CpxR, kdpE, vanRM, vanRN, baeR, adeR, vanRL, smeR, gyrA, gyrB, parC, Mfd, mfd, PBP2, PBP2x, EF-Tu, dfrE, pncA, tetB(P), tetQ, tet44, tetT, tetW, tetS, tetM, tetO, otr(A), tet36, tet32, clbC, clbB, clbA, cipA, cfrA, cfrC, sul3, ParY, murA, cls, and ileS, which confer resistance to various antibiotics such as glycopeptides, beta-lactams, fluoroquinolones, tetracyclines, sulfonamides, aminoglycosides, lincosamides, phenicols, macrolides, and others.
High-Risk VREfm Clones and Resistance Determinants in a Thai Hospital.
The study identified the vanA gene as the primary determinant of vancomycin resistance in all 29 VREfm isolates. Additional resistance genes such as aac(6')-Ii, ant(6')-Ia, erm(B), msr(C), tet(L), tet(M), aph(3')-III, aph(2'')-Ia, and inu(B) were also characterized, contributing to resistance against a variety of antibiotics.
Isolation of vanA-Mediated Vancomycin-Resistant Enterococcus faecalis (ST1912/CC116) and Enterococcus faecium (ST80/CC17), optrA-Positive Linezolid-Resistant E. faecalis (ST32, ST1902) from Human Clinical Specimens in Bangladesh.
The study identified vanA-mediated vancomycin-resistant Enterococcus faecalis and Enterococcus faecium, as well as optrA-positive linezolid-resistant E. faecalis in Bangladesh.
Seasonal prevalence and antimicrobial resistance profiles in Enterococcus spp. identified from mussels farmed along the coasts of the Abruzzo region.
The study identified several antibiotic resistance genes in Enterococcus spp. isolated from mussels, including tetC, tetD, cfr, vanA, vanD, vatE, vatD, and qnrS, which confer resistance to tetracycline, linezolid, vancomycin, and fluoroquinolone.
Vancomycin-resistant Enterococcus infections in a hospital in Salvador, Bahia: a descriptive study, 2021-2023.
The study identified the vanA gene as the predominant genotype among vancomycin-resistant Enterococcus isolates, highlighting its role in conferring resistance to vancomycin.
Prevalence and antimicrobial resistance profile of Listeria spp. isolated from raw fish.
The study identified blaTEM, ampC, and ereB as the most prevalent antimicrobial resistance genes in L. monocytogenes isolates from raw fish, with high resistance rates to multiple antibiotics.
Biofilms and antibiotic resistance profile of Enterococcus faecalis in selected dairy cattle farm environments in Bangladesh.
The study identified the presence of the blaTEM and vanA genes in Enterococcus faecalis isolates from dairy cattle and farm environments in Bangladesh, indicating resistance to ampicillin and vancomycin, respectively.
Molecular Detection of Antibiotic Resistance Genes Using Respiratory Sample from Pneumonia Patients.
The study identified several antibiotic resistance genes in respiratory samples from pneumonia patients, including MecA, Tem, Oxa-48-like, Ctx-M-1, Oxa-51-like, VanA, Shv, and Ndm, which are associated with resistance to methicillin, beta-lactam antibiotics, carbapenems, and vancomycin.
Assessment of Factors Contributing to Infection Severity and High Levels of Drug Resistance in Clinical Enterococcus Isolates.
The study identified several AMR genes, including vanA, aac(6')-Ie-aph(2'')-Ia, aph(3')-IIIa, ant(6')-Ia, and ant(3'')-Ia, which confer resistance to vancomycin, gentamicin, and streptomycin in Enterococcus isolates. High levels of multidrug resistance and biofilm formation were also observed.
Genomic characterization of vancomycin-resistant enterococci in Norwegian poultry.
The study identified vanA and narAB genes on pVEF-like plasmids in vancomycin-resistant Enterococcus faecium and E. hirae isolates from Norwegian poultry, along with additional resistance genes such as ermB, tetM, and aac(6')-Ii.
Rabbit carcasses as important vectors of multidrug-resistant Enterococcus faecalis, but not E. faecium: prevalence and molecular characterization from a study in Poland.
The study identified multiple AMR genes in Enterococcus faecalis isolates from rabbit carcasses, including aac(6')-Ie-aph(2")-Ia, ant(6)-Ia, aph(3')-IIIa, ermB, tetM, and tetL, which were consistent with the observed phenotypic resistance patterns.
Diversity and antibiotic susceptibility profiles of bacterial isolates from wound infections in patients at the surgical unit of Kisii teaching and referral hospital, Kenya.
The study identified vanA, vanB, and vanC genes in Staphylococcus aureus and Staphylococcus xylosus isolates, indicating the presence of vancomycin resistance mechanisms in wound-infecting bacteria.
Diversity and antibiotic susceptibility profiles of bacterial isolates from wound infections in patients at the surgical unit of Kisii teaching and referral hospital, Kenya.
The study identified vanA, vanB, and vanC genes in Staphylococcus aureus and Staphylococcus xylosus isolates, indicating the presence of vancomycin resistance mechanisms in wound-infecting bacteria.
Tolerance to Herbicides and Resistance to Antibacterial Drugs of Bacterial Isolates From the Guarani Aquifer System (Brazil).
The study identified multiple antibiotic-resistant bacterial isolates from the Guarani Aquifer System, highlighting the correlation between herbicide tolerance and antibiotic resistance.
Occurrence and Drivers of Antibiotic Resistance Genes Carried by Bacteriophages in Soils Following Different Fertilization Treatments.
The study identified 19 pARG subtypes in soils with different fertilization treatments, highlighting the impact of organic fertilizers on the diversity and abundance of antibiotic resistance genes carried by bacteriophages.
A cross-sectional molecular epidemiological study of biofilm-producing methicillin-resistant Staphylococcus aureus.
The study identified multiple antimicrobial resistance genes, including mecA, vanA, vanB, ermE, tetK, and icaA, in biofilm-producing methicillin-resistant Staphylococcus aureus isolates. These genes were associated with resistance to various antibiotics and biofilm formation.
TRENDS IN MULTIPLE ANTIBIOTIC RESISTANCE AMONG PREDOMINANT HOSPITAL ISOLATES: ANNUAL VARIATIONS AND PEAK SEASONAL PATTERNS
The study identified mecA, vanA, and tetM as key resistance genes in Staphylococcus aureus isolates with high multiple antibiotic resistance indices, indicating the presence of methicillin-resistant and vancomycin-resistant strains.
Characteristics of Staphylococcus saprophyticus Isolated from Humans and Animals.
The study identified several AMR genes in Staphylococcus saprophyticus strains isolated from humans and animals, including blaZ, mecA, ermA, ermB, tetM, fusB, and mupA, which confer resistance to various antibiotics such as beta-lactams, macrolides, tetracyclines, fusidic acid, and mupirocin.
Metagenomic analysis after selective culture enrichment of hospital and community wastewater enhances antimicrobial resistance gene detection.
The study identifies various beta-lactamase genes such as bla CTX-M, bla KPC, bla NDM, and bla VIM, along with other resistance genes like erm(TR), lsa, efrA, efrB, and optrA, which were detected through selective culture enrichment of wastewater samples.
Unleashing the biological potential of marine algal extracts against Staphylococcus aureus isolated from ready-to-eat beef products.
The study identified the presence of mecA, vanA, and optrA genes in S. aureus isolates, indicating resistance to methicillin, vancomycin, and linezolid, respectively. These findings highlight the prevalence of antibiotic resistance in S. aureus isolated from ready-to-eat meat products.
Prevalence and Characterization of the Antimicrobial Resistance and Virulence Profiles of Staphylococcus aureus in Ready-to-Eat (Meat, Chicken, and Tuna) Pizzas in Mansoura City, Egypt.
The study identified methicillin-resistant S. aureus (MRSA) and vancomycin-resistant S. aureus (VRSA) in ready-to-eat pizzas, with high prevalence of resistance to multiple antibiotics, including oxacillin, penicillin, ampicillin, cefuroxime, cefotaxime, kanamycin, and ciprofloxacin.
Comparative Analysis of Biofilm Formation and Antibiotic Resistance in Five ESKAPE Pathogen Species from a Tertiary Hospital in Bangladesh.
The study identified mecA as a key gene for methicillin resistance in S. aureus and vanB as a gene responsible for vancomycin resistance in E. faecium. These findings highlight the importance of these genes in the resistance profiles of the ESKAPE pathogens analyzed.
Simultaneous inactivation of antibiotic-resistant bacteria and degradation of antibiotic-resistant genes in alkalised human urine.
The study identified the inactivation of β-lactamase-producing Escherichia coli and vancomycin-resistant Enterococcus faecium, along with the degradation of their respective resistance genes, bla CTX - M and van -A, in alkalized urine using UV, H2O2, and their combination.
Navigating an evolving microbial landscape: emerging antimicrobial resistance trends and precision stewardship in Tianjin tertiary hospitals (2021-2023).
The study identified significant trends in antimicrobial resistance (AMR) patterns among clinical isolates from hospitals in Tianjin, highlighting the increasing resistance of Klebsiella pneumoniae to various antibiotics, including carbapenems, and the notable decline in ceftazidime/avibactam resistance in E. coli. Additionally, it noted the emergence of resistance in Acinetobacter baumannii and Pseudomonas aeruginosa to several antimicrobials.
Unveiling community structure, antimicrobial resistance, and virulence factor of a wastewater sample of dairy farm located in mayurbhanj, odisha, india.
The study identified several antimicrobial resistance (AMR) genes in a dairy wastewater sample, including beta-lactamases, aminoglycoside acetyltransferases, tetracycline resistance proteins, quinolone resistance proteins, and macrolide ribosome methyltransferases. These genes were found in various bacterial species such as Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, and Pseudomonas aeruginosa.
Antibiotic resistance in mastitis-causing bacteria: Exploring antibiotic-resistance genes, underlying mechanisms, and their implications for dairy animal and public health.
The study identifies several AMR genes and mutations in Staphylococcus aureus and coagulase-negative staphylococci associated with mastitis, including blaZ, mecA, tetK, tetM, aphA3, aacA-aphD, aadD, ermA, msrA, mphC, lnuB, and vanA, which confer resistance to various antibiotics such as β-lactams, tetracyclines, aminoglycosides, macrolides, and glycopeptides.
High-resolution genomic and molecular characterization of vancomycin-resistant enterococci from hospitalized patients in a tertiary care center in Riyadh, Saudi Arabia.
The study identified vanA, tet(M), erm(B), aac(6')-Ii, and aad(6) as key vancomycin-resistant genes in E. faecium, along with liaR and liaS mutations linked to daptomycin resistance.
Emergence of vancomycin-resistant Enterococcus faecium vanA ST612 with reduced daptomycin susceptibility, Switzerland, 2018 to 2024.
The study identifies mutations in liaR (W73C) and liaS (T120A) associated with reduced daptomycin susceptibility in vancomycin-resistant Enterococcus faecium vanA ST612. It also characterizes resistance genes including vanA, aac(6')-I, msr(C), and ant(6)-Ia.
Simultaneous and Accurate Visual Detection of Vancomycin-Resistant Enterococci vanA, vanB and vanM by Multiplex Recombinase Polymerase Amplification Combined with Lateral Flow Strip.
The study developed a multiplex RPA-LFS assay for the rapid and accurate detection of vanA, vanB, and vanM genes in vancomycin-resistant Enterococcus (VRE). The assay demonstrated high sensitivity and specificity, with 100% concordance with conventional PCR in clinical samples.
GENETIC DETERMINANTS OF ANTIBIOTIC RESISTANCE AND VIRULENCE IN Staphylococcus aureus ISOLATES FROM HOSPITAL SURFACES IN HIGH-RISK AREAS OF LOJA, ECUADOR.
The study identified the blaZ gene associated with penicillin resistance, mecA for methicillin resistance, and vanA for vancomycin resistance in Staphylococcus aureus isolates from hospital surfaces in Loja, Ecuador.
Geographics and bacterial networks differently shape the acquired and latent global sewage resistomes.
The study identifies several AMR genes, including aph(6)-id_2, mef(c), mef(b), mph(e), mph(g), msr(d), lnu(b), lnu(d), aadA, ant(6)-Ia, blaCTX-M, blaTEM, blaSHV, blaOXA, qnrS1, mcr-1, and vanA, which are associated with resistance to various antibiotics such as aminoglycosides, macrolides, lincosamides, beta-lactams, fluoroquinolones, polymyxins, and glycopeptides.
Antimicrobials Resistance Profiling and Clonal Lineages of Staphylococcus aureus Isolated from Cockroaches in University-Affiliated Hospitals, 2023.
The study identified several aminoglycoside resistance genes (aac(6')-Ie+aph(2"), ant(4')-Ia, aph(3')-IIIa, ant(6)-Ia) and quaternary ammonium compound resistance genes (qacA/B, qacC, qacD, smr) in Staphylococcus aureus isolates from cockroaches in hospital environments. Additionally, the vanA gene was detected in one isolate, indicating vancomycin resistance.
City or Suburb, Resistance Flows: Wastewater-Borne ESKAPE and AMR Genes in Malaysian Hospitals.
The study identified several AMR genes, including ermB, VanA, BlaTEM, tetA, Sul1, and BlaNDM-1, in ESKAPE pathogens from hospital wastewater in Klang Valley and suburban areas of Malaysia. These genes were associated with resistance to various antibiotics, highlighting the significance of hospital wastewater as a reservoir for AMR genes.
Myco- and microbiological profiling of a human cadaver reveals drug-resistant strains and new fungal records.
The study identified drug-resistant fungal and bacterial isolates from a human cadaver, including new fungal records and species with potential pathogenicity. Antimicrobial susceptibility testing revealed resistance to antifungal agents like voriconazole and amphotericin B, as well as to various antibiotics.
Correlation between the antibiotic resistance and virulence determinants of vancomycin-resistant enterococci: paradoxical involvement of vanA in phenotypic resistance to teicoplanin.
The study identified vanA as the primary vancomycin resistance gene in VRE isolates, and explored the correlation between virulence genes (esp, gelE, hyl) and biofilm formation, gelatinase activity, and antibiotic resistance.
Antimicrobial resistance and virulence gene profiles of Enterococcus faecalis and Enterococcus faecium isolated from subclinical bovine mastitis milk and cow dung.
The study identified vanA, tetM, ermB, vanB, and tetK as the main antimicrobial resistance genes in Enterococcus faecalis and Enterococcus faecium isolates from subclinical bovine mastitis milk and cow dung samples.
Molecular resistance mechanisms to newly approved antibiotics (2017-2025) in WHO priority pathogens.
The paper reviews molecular resistance mechanisms to newly approved antibiotics in WHO priority pathogens, identifying various beta-lactamases, efflux pumps, and target site modifications that confer resistance.
Characterization of Tn1546, a Tn3-related transposon conferring glycopeptide resistance by synthesis of depsipeptide peptidoglycan precursors in Enterococcus faecium BM4147.
The study characterizes Tn1546, a transposon responsible for glycopeptide resistance in Enterococcus faecium BM4147, through the biosynthesis of depsipeptide peptidoglycan precursors involving genes vanA, vanH, and vanY.
Bacterial resistance to vancomycin: five genes and one missing hydrogen bond tell the story.
The study identifies five genes (vanA, vanH, vanX, vanS, and vanR) involved in vancomycin resistance in Enterococcus faecium BM4147, detailing their roles in modifying peptidoglycan precursors and activating resistance mechanisms.
D-Ala-D-Ala ligases from glycopeptide antibiotic-producing organisms are highly homologous to the enterococcal vancomycin-resistance ligases VanA and VanB.
D-Ala-D-Ala ligases from glycopeptide antibiotic-producing organisms are highly homologous to the enterococcal vancomycin-resistance ligases VanA and VanB.
Vancomycin-resistant enterococci.
The study characterizes the vanA gene cluster responsible for vancomycin resistance in enterococci, detailing its mechanism of action through the synthesis of D-alanine-D-lactate, which prevents vancomycin from binding to cell wall precursors.
Glycerol Monolaurate Inhibits Induction of Vancomycin Resistance in Enterococcus faecalis.
Glycerol monolaurate (GML) inhibits the induction of vancomycin resistance in Enterococcus faecalis by blocking signal transduction in the VanS-VanR pathway.
Molecular analysis of Tn1546 in Enterococcus faecium isolated from animals and humans.
The study identified the vanA gene cluster in Tn1546 as responsible for high-level glycopeptide resistance in Enterococcus faecium isolates from both animals and humans.
Antibiotic Resistance Patterns of Enterococci and Occurrence of Vancomycin-Resistant Enterococci in Raw Minced Beef and Pork in Germany.
The study identified the vanA gene as the primary determinant of vancomycin resistance in enterococci isolated from raw minced beef and pork in Germany.
Molecular characterization of vancomycin-resistant enterococci from hospitalized patients and poultry products in The Netherlands.
The study identified the vanA gene as a key contributor to vancomycin resistance in Enterococcus faecium and Enterococcus faecalis isolated from poultry and hospitalized patients in The Netherlands.
vanA gene cluster in a vancomycin-resistant clinical isolate of Bacillus circulans.
Glycopeptide antibiotic resistance genes in glycopeptide-producing organisms.
The study identifies and characterizes the vanH, vanA, and vanX genes from glycopeptide-producing organisms, which are responsible for glycopeptide resistance mechanisms similar to those found in vancomycin-resistant enterococci.
Use of molecular and reference susceptibility testing methods in a multicenter evaluation of MicroScan dried overnight gram-positive MIC panels for detection of vancomycin and high-level aminoglycoside resistances in enterococci.
The study evaluated the ability of MicroScan PM-8 panels to detect vancomycin resistance (VR) and high-level aminoglycoside resistance (HLAR) in enterococci, comparing them to reference methods. It identified and validated several AMR genes including vanA, vanB, vanC1, vanC2-3, ANT(6)-I, AAC(6')-Ib, and APH(2")-I.
Lactobacillus species identification, H2O2 production, and antibiotic resistance and correlation with human clinical status.
The study identified vancomycin resistance in Lactobacillus rhamnosus and Lactobacillus paracasei subsp. paracasei, which exhibited MICs of ≥256 μg/ml, while the L. acidophilus group showed susceptibility with MICs ≤2 μg/ml.
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