The study shows extensive horizontal gene transfer of tetracycline resistance gene tetQ and erythromycin resistance genes ermF, ermG, and ermB among Bacteroides species and between Bacteroides and other genera in the human colon.

The study identifies and characterizes ermG, a novel macrolide-lincosamide-streptogramin B resistance element from Bacillus sphaericus, which encodes an rRNA transmethylase that confers resistance through methylation of 23S rRNA.

The paper describes the antimicrobial resistance mechanisms in Clostridium and Brachyspira spp. and other anaerobes, focusing on the genetic basis of resistance to various antibiotics, including tetracyclines, macrolides, lincosamides, chloramphenicol, and others. It highlights the role of specific genes such as tet, erm, and cat in conferring resistance.

The study identifies tetW and mefA as highly expressed tetracycline and macrolide resistance genes in the rumen of beef cattle, highlighting their significance in the resistome of food-producing animals.

This study identifies multiple AMR genes and mutations in Clostridioides difficile, including ermB, tetM, mefH, and various mutations in gyrA, gyrB, rpoB, pbp1, and pbp3. These findings highlight the widespread nature of AMR in C. difficile and its potential role in the spread of the bacterium.

The study identified ermG as a gene that increased in abundance in the feces of treated pigs compared to those that did not receive post-PRRS antimicrobials, indicating its role in macrolide, lincosamide, and streptogramin B resistance.

The study identified ermG as a gene that increased in abundance in the feces of treated pigs compared to those that did not receive post-PRRS antimicrobials, indicating its role in macrolide, lincosamide, and streptogramin B resistance.

The study identified various antimicrobial resistance genes (ARGs) in humans and food-producing animals in Brazil, including novel carbapenemase-encoding genes such as blaAIM-1, blaCAM-1, blaGIM-2, and blaHMB-1, which were not previously reported in Latin America. Other significant ARGs included aac(6')-Ib-cr, ermF, ermB, ermG, tetO, tetQ, tetW, qnrB10, qnrB19, qnrD1, and crpP.

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.

The study identified several resistance genes in Bacteroides coprophilus and Bacteroides dorei, including adeF, ermF, tetQ, ermG, and a carbapenem resistance gene, highlighting the impact of antimicrobial exposure on the gut microbiome's resistance profiles.

The study identified various antibiotic resistance genes in the gut microbiota of travelers returning to the UK, highlighting the association with colonization by pathogenic E. coli. Key findings include the prevalence of genes conferring resistance to macrolides, tetracyclines, sulfonamides, and others.

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.

The study identified and compared the prevalence of antibiotic resistance genes in intestinal Bacteroides, Parabacteroides and Phocaeicola isolates from healthy and carbapenem-treated patients in European countries, highlighting differences in gene carriage between gut microbiota and clinical strains.

The study identified several antimicrobial resistance genes in Alistipes strains, including adeF, tet(Q), cfxA3, cfxA4, and ermG, which confer resistance to various antibiotics such as minocycline, cefuroxime, and clindamycin.

The study shows that a western diet independently increases the prevalence of antibiotic resistance genes (ARGs) in the gut microbiota without antibiotic exposure. Specifically, ARGs such as ErmG, CfxA2, tetQ, lnuC, and mefA were found to be significantly enriched in the gut microbiota of mice fed a western diet.

The study identified 29 ARG subtypes across eight types in 13 known, five unknown, and 18 unclassified species, highlighting the complex and dynamic nature of antimicrobial resistance in the gut microbiome. Notably, the cfr(C) gene was detected in 11 bacterial species following antimicrobial treatment, with mutation patterns characterized in several species.