Introduction: Multidrug-resistant is galloping, posing threat to tackle, and leaving us with limited options of treatment.
Methods: The purpose of this study is to find the genotypic association in drug-resistant isolated from different sterile body fluids. Matrix-assisted laser desorption/ionization-time of flight confirmed isolates were taken and minimum inhibitory concentration (MIC) was determined by VITEK-2 AST system. The presence of resistance nodulation-division (RND)-efflux pump genes AdeABC-RS was detected by multiplex polymerase chain reaction.
Results: Of the total 40 , 32 (80%) were multidrug resistant though all isolates were susceptible to Tigecycline. Similarly, 26 (81.25%) isolates were positive for RND-efflux pump genes AdeABC-RS.
Discussion: RND efflux pump AdeABC-RS system plays a significant role in emerging multi drug resistant . Mutation in AdeS gene deciphers the role of regulatory gene. Hence, antimicrobial stewardship should be strictly followed and efflux pump inhibiting substances should be vigorously searched to bring back the era of existing antibiotics.
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http://dx.doi.org/10.4103/jgid.jgid_404_20 | DOI Listing |
BMC Microbiol
January 2025
Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo, 11562, Egypt.
Background: One of the main issues facing public health with microbial infections is antibiotic resistance. Nanoparticles (NPs) are among the best alternatives to overcome this issue. Silver nanoparticle (AgNPs) preparations are widely applied to treat multidrug-resistant pathogens.
View Article and Find Full Text PDFEMBO J
January 2025
The Hormel Institute, University of Minnesota, Austin, MN, 55912, USA.
ABCB1 is a broad-spectrum efflux pump central to cellular drug handling and multidrug resistance in humans. However, how it is able to recognize and transport a wide range of diverse substrates remains poorly understood. Here we present cryo-EM structures of lipid-embedded human ABCB1 in conformationally distinct apo-, substrate-bound, inhibitor-bound, and nucleotide-trapped states at 3.
View Article and Find Full Text PDFACS Appl Mater Interfaces
January 2025
School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
() infections are increasingly challenging due to their propensity to form biofilms and low outer membrane permeability, especially in chronically infected patients with thick mucus. exhibits multiple drug resistance mechanisms, making it one of the most significant global public health threats. In this study, we found that moxifloxacin (MXC) and antibacterial peptides (ε-poly-l-lysine, ε-PLL) exhibited a synergistic effect against multidrug-resistant (MDR-).
View Article and Find Full Text PDFExpert Opin Drug Metab Toxicol
January 2025
Institut de R&D Servier, Paris-Saclay, F-91190 Gif-sur-Yvette, France.
Introduction: Drug-mediated inhibition of bile salt efflux transporters may cause liver injury. In vitro prediction of drug effects toward canalicular and/or sinusoidal efflux of bile salts from human hepatocytes is therefore a major issue, which can be addressed using liver cell-based assays.
Area Covered: This review, based on a thorough literature search in the scientific databases PubMed and Web of Science, provides key information about hepatic transporters implicated in bile salt efflux, the human liver cell models available for investigating functional inhibition of bile salt efflux, the different methodologies used for this purpose, and the modes of expression of the results.
Structure
December 2024
Center for Microbiome Research of Med-X Institute, Department of Critical Care Medicine, Shaanxi Provincial Key Laboratory of Sepsis in Critical Care Medicine, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China; The Key Laboratory of Environment and Genes Related to Disease of Ministry of Education Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China. Electronic address:
Multidrug-resistant Acinetobacter baumannii has emerged as one of the most antibiotic-resistant bacterial pathogens associated with nosocomial infection, with its resistance highly depending on multiple multidrug efflux pumps. Here, we report the cryoelectron microscopy (cryo-EM) structure of Acinetobacter drug efflux G (AdeG), the inner membrane component of one of three important resistance-nodulation-cell division (RND) pump family members in A. baumannii, which is involved in drug resistance to chloramphenicol, trimethoprim, ciprofloxacin, and clindamycin.
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