Results 21 to 30 of about 2,218,812 (219)

Combination of Colistin and Azidothymidine Demonstrates Synergistic Activity against Colistin-Resistant, Carbapenem-Resistant Klebsiella pneumoniae [PDF]

open access: yesMicroorganisms, 2020
Carbapenem-resistant Enterobacteriaceae (CRE) is listed as an urgent threat by the World Health Organization because of the limited therapeutic options, rapid evolution of resistance mechanisms, and worldwide dissemination. Colistin is a common backbone agent among the “last-resort” antibiotics for CRE; however, its emerging resistance among CRE has ...
Ya-Ting Chang   +7 more
openaire   +4 more sources

Mutations in the pmrB gene constitute the major mechanism underlying chromosomally encoded colistin resistance in clinical Escherichia coli

open access: yesJournal of Global Antimicrobial Resistance
Objectives: The mechanisms underlying chromosomally encoded colistin resistance in Escherichia coli remain insufficiently investigated. In this study, we investigated the contribution of various pmrB mutations from E.
Jung-Chung Lin   +3 more
doaj   +2 more sources

Emergence of Colistin Resistance in Carbapenem-Resistant Hypervirulent Klebsiella pneumoniae Under the Pressure of Tigecycline

open access: yesFrontiers in Microbiology, 2021
Colistin and tigecycline are the last options against carbapenem-resistant hypervirulent Klebsiella pneumoniae (CR-hvKP). Intersecting resistance determinants have been detected between these antibiotics; however, there is only limited evidence of such ...
Yawei Zhang   +7 more
doaj   +1 more source

Role of efflux pumps, their inhibitors, and regulators in colistin resistance

open access: yesFrontiers in Microbiology, 2023
Colistin is highly promising against multidrug-resistant and extensively drug-resistant bacteria clinically. Bacteria are resistant to colistin mainly through mcr and chromosome-mediated lipopolysaccharide (LPS) synthesis-related locus variation. However,
Yinhuan Ding   +9 more
doaj   +1 more source

A Clinico-Microbiological Study of Blood Stream Infections in a Tertiary Referral Hospital: Colistin Resistance & Challenges [PDF]

open access: yes, 2023
Carbapenems, frequently used for the treatment of infections caused by Multidrug-resistant (MDR) Gram-negative bacteria (GNB) are being reported with increased resistance rate.
Jyoti Chaudhary   +2 more
core   +1 more source

Ser253Leu substitution in PmrB contributes to colistin resistance in clinical Acinetobacter nosocomialis

open access: yesEmerging Microbes and Infections, 2021
Infections caused by extensively drug-resistant (XDR) Acinetobacter nosocomialis have become a challenging problem. The frequent use of colistin as the last resort drug for XDR bacteria has led to the emergence of colistin-resistant A.
Ya-Sung Yang   +10 more
doaj   +1 more source

Assessment of colistin resistance in Gram negative bacteria from clinical samples in resource-limited settings

open access: yesAsian Pacific Journal of Tropical Medicine, 2022
Objective: To find a proper method to assess colistin resistance in multidrug resistant Gram negative bacteria (MDR-GNB) on a routine basis in resource limited settings. Methods: Clinical samples were processed.
Shubham Chauhan   +4 more
doaj   +1 more source

Colistin Resistance in Gram-Negative Bacteria: Mechanisms, Transmission, and Novel Intervention Strategies. [PDF]

open access: yesMicroorganisms
Multidrug resistance (MDR) in Gram-negative bacteria is a global issue and needs to be addressed urgently. MDR can emerge through genetic mutations and horizontal gene transfer and deteriorate under antibiotic selective pressure.
Zeb S   +9 more
europepmc   +2 more sources

Transition of colistin dependence into colistin resistance in Acinetobacter baumannii [PDF]

open access: yesScientific Reports, 2017
AbstractWe recently demonstrated a high rate of colistin dependence in Acinetobacter baumannii isolates exposed to colistin in vitro. In the present study, we obtained a colistin-resistant (H08-391R) and colistin-dependent mutant (H08-391D) from a colistin-susceptible parental strain (H08-391). We found that the colistin-dependent mutant converted into
Lee, Ji-Young   +2 more
openaire   +3 more sources

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