The study identified a bla ROB-1 gene in an integrative conjugative element (ICE) of M. haemolytica, which had a single nucleotide substitution leading to a non-functional gene and sensitivity to ampicillin.

The study identifies multiple antibiotic resistance genes in Mannheimia haemolytica, particularly in genotype 2, subtype 2b isolates, which are associated with the lungs of cattle with respiratory disease and contain various combinations of resistance genes.

The study identified several antimicrobial resistance genes in bacterial isolates associated with bovine respiratory disease, including ermF, dfrA14, tetH, sul2, floR, aph3-Ia, ROB-1, and cat2. These genes conferred resistance to various antibiotics such as macrolides, tetracyclines, sulfonamides, phenicols, aminoglycosides, and beta-lactams.

The study identified several AMR genes, including aadA31, bla ROB-1, floR, mph(E), msr(E), and tet(H), in bovine respiratory disease organisms, highlighting the impact of antimicrobial use on AMR development.

This study identified several antimicrobial resistance genes in Pasteurella multocida, including aminoglycoside, beta-lactam, tetracycline, macrolide, and sulfonamide resistance genes, highlighting the diverse resistance mechanisms present in this pathogen.

The study identified multiple antimicrobial resistance genes in Pasteurella multocida isolates from cattle and humans in Egypt, including erm(Q), erm(42), mph(E), msr(E), intl1, intl2, blaCTX-M, blaCTX-M-1, and blaTEM, which confer resistance to various antibiotics such as erythromycin, azithromycin, cefotaxime, and ampicillin.

The study identifies three novel variants of PmGRI1 and a hybrid structure combining Tn7-like transposon and PmGRI1 in Proteus mirabilis, highlighting their role in carrying multiple antibiotic resistance genes.

The study identified bla NDM-5, bla KPC-2, and mcr-1 as key resistance genes in carbapenem-resistant Enterobacteriaceae isolated from retail meat products, patients, and porcine excrement in China.

The study identifies a conjugative plasmid carrying three macrolide resistance genes: erm(B), a novel erm(42) gene, and mph(A), which confer resistance to azithromycin in Enterobacteriaceae.

This study characterizes four groups of chromosome-borne accessory genetic elements (AGEs) in Providencia, highlighting the diversity and complexity of multidrug resistance (MDR) regions within these elements. It identifies numerous drug resistance genes, including beta-lactamases, aminoglycoside modifying enzymes, tetracycline resistance genes, and others, contributing to the understanding of AMR mechanisms in Providencia.

The study identified ESBL-producing E. coli in river water in northern Thailand, with bla CTX-M-15, bla CTX-M-55, bla CTX-M-14, and bla CTX-M-27 being the most prevalent beta-lactamase genes. Additionally, mcr-1.1 and mcr-3.4 genes were found to confer resistance to colistin. Various other resistance genes were also characterized, including aac(3)-IId, aadA5, ant(3″)-Ia, aph(3″)-Ib, aph(6)-Id, aac(6′)-Ib-cr, qnrS1, mdf(A), erm(B), mph(A), floR, sul2, sul3, tet(A), tet(X), tet(M), dfrA12, dfrA14, dfrA17, cmlA1, catA2, lnu(F), and erm(42).

The study characterizes a multidrug-resistant Klebsiella pneumoniae ST258 strain (KP411) isolated from poultry in the Brazilian Amazon, which carries several AMR genes including blaKPC-2, blaCTX-M-14, and others, highlighting the potential of food-producing animals as reservoirs of MDR clones.

The study identifies mph(A), erm(42), erm(B), and ramAp as the primary mechanisms of azithromycin resistance in non-typhoidal Salmonella isolates from Taiwan.

The study identified multiple antimicrobial resistance genes in Salmonella enterica isolates from chicken meat, including aminoglycoside, beta-lactam, quinolone, tetracycline, sulfonamide, and phenicol resistance genes. These genes were detected using whole genome sequencing and correlated with phenotypic resistance profiles.

The study found that tulathromycin metaphylaxis increased the isolation of multidrug-resistant (MDR) Mannheimia haemolytica (MH) in stocker heifers. MDR MH isolates were associated with integrative conjugative elements (ICE) carrying antimicrobial resistance genes.

The study identified 26 AMR genes in respiratory bacteria from weaned dairy heifers, with high prevalence of tetracycline, aminoglycoside, sulfonamide, beta-lactam, phenicol, and macrolide resistance genes.

The study identified several macrolide resistance genes, including mph(A), mph(B), mef(B), erm(B), mef(C)-mph(G), erm(C), erm(42), ere(A), and msr(E)-mph(E), associated with azithromycin resistance in E. coli and Salmonella from food-producing animals and meat in Europe. The study also highlighted the importance of the mph(A) operon structure and its regulatory region in determining azithromycin resistance.

The study identified several clinically relevant antimicrobial resistance genes (ARGs) in bovine respiratory disease (BRD) pathogens, including estT, floR, mphE, erm(42), msrE, aadA, ANT(2''-Ia), APH(3''-Ib), APH(3'-Ia), APH(6)-Id, sul2, tet(H), ROB-1, and OXA-2. Additionally, mutations in gyrA and parC were found to confer resistance to fluoroquinolones in Mannheimia haemolytica.

The study identifies the presence of mcr-1.1, bla TEM, bla CTX-M−15, bla CTX-M−55, and other resistance genes in ESBL-producing E. coli isolates from the Jehai community in Malaysia, highlighting the co-occurrence of multiple antibiotic resistance mechanisms.

The study identified 50 acquired resistance genes and seven chromosomal-mediated gene mutations in Salmonella populations from Thai canal water, highlighting the prevalence of multidrug-resistant strains and the diversity of resistance mechanisms.

The study identifies tet(X4)-positive multidrug-resistant E. coli in healthy individuals from urban areas in Shenzhen, China, highlighting the presence of tigecycline resistance and other resistance genes in the community gut microbiota.

The study identified various AMR genes in E. coli isolates from retail foods, including beta-lactamases (blaCMY-2, blaCTX-M-27, blaCTX-M-55) and the macrolide resistance gene erm(42).