The study identified and characterized multiple tetracycline resistance genes encoding ribosomal protection proteins (RPPs) including tet(M), tet(O), tet(W), tet(Q), tet(S), tet(T), tetB(P), and otrA. These genes were detected in various bacterial species and environments, highlighting their prevalence and potential for horizontal gene transfer.

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.

The study identified multiple antimicrobial resistance genes in Elizabethkingia meningoseptica strains, including beta-lactamases, tetracycline resistance genes, and efflux pumps, indicating a multidrug-resistant profile.

The study identifies several ribosomal protection protein (RPP) genes, including tet(M), tet(O), tet(W), tet(Q), tetB(P), and otr(A), that can confer high-level tetracycline resistance in E. coli. However, expression of these genes often comes with fitness costs, and certain mutations in tRNA genes (argW and proL) or the hns gene can mitigate these costs.

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 multiple antibiotic resistance genes in three donkey-derived Streptococcus equi subsp. equi isolates, including genes conferring resistance to beta-lactams, tetracyclines, macrolides, fluoroquinolones, and others. Notably, the HT1112 isolate showed resistance to six antimicrobials, while HTP133 and HTP232 showed resistance to fewer drugs. Additionally, the study highlighted the role of biofilm formation in antimicrobial resistance.

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.

The study identified several antimicrobial resistance (AMR) genes in microbial communities from the Oder river water and sediment, including blaTEM-116, erm(F), otr(C), ole(C), oqxB, dfrB3, tcr3, otr(A), vat(F), mph(E), srmB, and qepA4. These genes were associated with resistance to various antibiotics such as beta-lactams, macrolides, tetracyclines, and fluoroquinolones.