The paper discusses various aminoglycoside modifying enzymes, particularly focusing on AAC(6')-Ib, AAC(6')-Ib-cr, and AAC(6')-Ib 11, which confer resistance to aminoglycosides like amikacin and gentamicin, and in some cases, quinolones.

The study identified multiple carbapenem-resistant Klebsiella pneumoniae (CP-Kp) strains carrying various resistance genes, including blaKPC-2, blaNDM-1, and others, contributing to multidrug resistance. Plasmid analysis revealed the presence of resistance genes on different plasmids, highlighting the complexity of resistance mechanisms.

The study identified two extensively drug-resistant Acinetobacter baumannii clones carrying blaOXA-23 and blaOXA-72, which confer resistance to carbapenems. Additional resistance genes such as aac(3')-Ia, ant(3'')-Ia, aph(3')-VIa, strA, strB, armA, blaADC-73, blaADC-74, blaTEM-1D, mph(E), and msr(E) were also detected.

The study identifies various antibiotic resistance genes and insertion sequences in Acinetobacter baumannii plasmids, highlighting their role in the dissemination of resistance mechanisms.

The study identified multiple antibiotic resistance genes in phage-susceptible Acinetobacter baumannii strains, including sulfonamide, tetracycline, beta-lactam, aminoglycoside, macrolide, and phenicol resistance genes. These findings highlight the complex resistance profiles of these strains and their potential implications for therapeutic strategies.

The study identifies the disruption of lpxA, mlaD, and pldA genes by IS Ajo2 and IS Aba13 insertions in colistin-dependent A. baumannii, leading to lipid A deficiency and colistin dependence.

The study identified various carbapenemase genes (blaNDM-1, blaNDM-5, blaVIM-1, blaVIM-6, blaOXA-23, blaOXA-58, blaOXA-66, blaOXA-69, blaOXA-91, blaOXA-181, blaOXA-50) and other resistance genes (such as armA, rmtC, rmtF, aac(3)-I, aadA1, aph(3')-Ia, aph(3')-VI, aph(3')-Via, aph(6')-Id, mphE, msrE, mphA, ereA, dfrA1, dfrA12, dfrA14, dfrA17, dfrA20, sul1, sul2, tetB, tetD, tetG, tet39, qnrVC1, qnrS1, qnrB4, floR, catA1, catA2, catB3, catB7, cmlA1, cmlA5, arr-3, arr-2, sat2, acrF, mdtM, emrD, mexA, mexE, mexX, kdeA, oxa-10, oxa-395, oxa-396, oxa-846, adc-25, dha-1, act-16, cmY, ctx-m-15, shv-67, tem-1b) in carbapenem non-susceptible clinical isolates of gram-negative bacteria in Kenya, highlighting the diversity and prevalence of multidrug resistance.

The study identified several AMR genes in carbapenem-resistant Acinetobacter baumannii strains from Vietnam, including bla OXA-51-like, bla OXA-23, bla TEM-1, and others, highlighting the widespread resistance to beta-lactams, aminoglycosides, and other antibiotics.

The study identifies several AMR genes including bla OXA-23, bla OXA-24, bla OXA-51, and various aminoglycoside, sulfonamide, tetracycline, and macrolide resistance genes in XDR A. baumannii isolates from Romania.

The study identified various AMR genes and mutations in multidrug-resistant Acinetobacter baumannii isolates from a pediatric cancer hospital in Egypt, highlighting the presence of bla NDM, bla OXA-23-like, bla OXA-51-like, and other resistance genes, along with mutations in pmrA and lptF contributing to colistin resistance.

The study identifies various AMR genes and mutations associated with colistin resistance in clinical Acinetobacter baumannii strains, highlighting the genomic diversity and mosaicism in resistance mechanisms.

The study identified bla OXA-23 as the primary cause of carbapenem resistance in Acinetobacter baumannii isolates from Afghanistan, along with various other resistance genes for sulfonamides, macrolides, tetracyclines, and aminoglycosides.

The study identified several AMR genes, including novel bla ADC-257, and mutations in gyrA and parC associated with fluoroquinolone resistance in extensively drug-resistant NDM-producing Acinetobacter baumannii isolates.

The study identified several AMR genes in the extensively drug-resistant Acinetobacter baumannii AB329, including beta-lactamases (blaOXA-51, blaADC-25, blaOXA-23, blaTEM-1D), aminoglycoside resistance genes (aph(3')-Ia, aph(3'')-Ib, aph(6)-Id, armA), tetracycline resistance genes (tet(B), tet(R)), and macrolide resistance genes (mph(E), msr(E)). Additionally, the aminoglycoside resistance gene aph(3')-VIa was found on the conjugative plasmid pAB329b, which was shown to transfer resistance to sodium azide-resistant A. baumannii.

The study demonstrates that aminoglycoside-modifying enzymes (AMEs) are sufficient to confer clinical resistance to key antibiotics in Pseudomonas aeruginosa. Specifically, ant(2")-Ia, aac(6')-Ib3, and aph(3')-VIa were shown to significantly increase the minimum inhibitory concentrations (MICs) of tobramycin, gentamicin, and amikacin, respectively.

The study identified the aph(3')-VIa gene on an IncQ1 plasmid as the mechanism of amikacin resistance in one of the multidrug-resistant K. pneumoniae isolates.

The study identified blaOXA-23 and blaNDM-1 as the most common carbapenem resistance genes in Acinetobacter baumannii isolates from Nigerian hospitals, along with several other AMR genes and mutations contributing to multidrug resistance.

The study identified various AMR genes in multidrug-resistant Acinetobacter baumannii isolates from Alexandria, Egypt, including bla OXA-51-like variants, bla OXA-23, bla NDM-1, bla PER-7, bla GES-like, and others, highlighting the widespread resistance to beta-lactams, aminoglycosides, tetracyclines, and other antibiotics.

The study reports a case of domestically acquired NDM-1-producing Pseudomonas aeruginosa in a transplant patient in southern California, highlighting the presence of multiple resistance genes including blaNDM-1, blaOXA-10, blaOXA-488, blaPDC-35, blaPME-1, aac(6')-Ib9, ant(3”)-IIa, aph(3′)-IIb, aph(3′)-VIa, catB3, catB7, cmlA9, fosA, tet(D), and sul1.

The study identifies 25 critical mobile antibiotic resistance genes (ARGs) in Pseudomonas aeruginosa, including genes such as sul1, qacEΔ1, aac(6′)-Ib, bla VIM-1, and others, which are associated with various antibiotic classes and are linked to mobile genetic elements (MGEs).

The study identifies the persistence of an OXA-24/40 Acinetobacter baumannii clone over 10 years in a Spanish hospital, highlighting the role of the bla OXA-24/40 gene and a novel variant, bla OXA-1040, in carbapenem resistance. It also characterizes other resistance genes such as aad A1, aph (3')-VIa-like, str A, str B, sul1, sul2, and tet(B)-like, contributing to multidrug resistance.

The study characterizes the diversity of T4SS-encoding plasmids in Acinetobacter, identifying various antibiotic resistance genes such as blaOXA-23, blaOXA-82, blaGES-11, aph(3')-VIa, aadA2, sul1, dfrA7, cmlA1, and qacEΔ1, highlighting their role in multidrug resistance.

The study characterizes the diversity of T4SS-encoding plasmids in Acinetobacter, identifying various antibiotic resistance genes such as blaOXA-23, blaOXA-82, blaGES-11, aph(3')-VIa, aadA2, sul1, dfrA7, cmlA1, and qacEΔ1, highlighting their role in multidrug resistance.

The study identifies various AMR genes and mutations in a diverse panel of Acinetobacter baumannii strains, including bla OXA-23, bla OXA-24, bla OXA-58, bla NDM-1, and mutations in gyrA and parC associated with fluoroquinolone resistance.

The study identifies and characterizes a colistin-resistant Acinetobacter colistiniresistens isolate co-producing IMP-1 and OXA-58 carbapenemases. The isolate exhibits resistance to multiple antibiotics, including carbapenems, cephalosporins, and polymyxins, and harbors several resistance genes such as blaIMP-1, blaOXA-58, and eptA-like, which contribute to its multidrug-resistant phenotype.

The study identifies several AMR genes including blaOXA-23, blaADC-25, aph(3')-VIa, armA, aph(6)-Id, tet(B), and msr(E) in pyomelanin-producing Acinetobacter baumannii isolates, highlighting their multidrug-resistant profile.

The study identifies multiple AMR genes and mutations in K. pneumoniae isolates from Armenia, highlighting the presence of XDR and MDR strains with resistance to various antibiotics, including carbapenems, aminoglycosides, and quinolones.

The study identifies multiple AMR genes and mutations in K. pneumoniae isolates from Armenia, highlighting the presence of XDR and MDR strains with resistance to various antibiotics, including carbapenems, aminoglycosides, and quinolones.

The study identified multiple AMR genes and mutations in P. aeruginosa UTI isolates from the UK and Kuwait, highlighting the presence of multidrug-resistant strains, especially in Kuwaiti isolates. Key AMR genes included aac(3)-IV, aph(3')-Ib, aph(3')-IIb, aph(4)-Ia, aph(6)-Id, crpP, dfrB1, aac(6')-Ib7, aac(6')-ii, aaA61, blaPDC, and blaVIM-28. Mutations in gyrA were also found to contribute to fluoroquinolone resistance.

The study reports the isolation of a Pseudomonas guariconensis clinical isolate producing OXA-204 carbapenemase, highlighting the spread of OXA-48-like genes beyond Enterobacterales. The isolate exhibited resistance to multiple antibiotics due to the presence of various resistance genes, including blaOXA-204, blaCMY-16, blaDHA-1, and others.

The study identifies multiple antimicrobial resistance genes in a multidrug-resistant Klebsiella pneumoniae ST70 isolate from a Magellanic Penguin, highlighting the potential of migratory penguins as vectors of antimicrobial-resistant microorganisms.

The study identified carbapenem-resistant Acinetobacter baumannii isolates carrying the blaOXA-23 gene and aminoglycoside resistance genes such as armA, aadA2, aph(3')-VIa, and ant(2")-Ia. Other resistance genes included mph(E), msr(E), sul1, sul2, and tet(B).

The study identified multiple AMR genes in multidrug-resistant Acinetobacter baumannii isolates from Paraguay, including blaOXA-23, blaOXA-66, blaOXA-65, blaADC-73, blaADC-5, blaTEM-1, and various aminoglycoside, macrolide, sulfonamide, chloramphenicol, tetracycline, and trimethoprim resistance genes.

The study identifies the aph(3')-VIa gene as the primary cause of amikacin resistance in Acinetobacter baumannii strains in Spain, indicating the spread of an epidemic strain carrying this gene.