Results 31 to 40 of about 577,400 (301)

Global Evolution of Pathogenic Bacteria With Extensive Use of Fluoroquinolone Agents

open access: yesFrontiers in Microbiology, 2020
It is well-established that the spread of many multidrug-resistant (MDR) bacteria is predominantly clonal. Interestingly the international clones/sequence types (STs) of most pathogens emerged and disseminated during the last three decades.
Miklos Fuzi   +2 more
doaj   +1 more source

Resistance to the SDHI Fungicides Boscalid and Fluopyram in Podosphaera xanthii Populations from Commercial Cucurbit Fields in Spain

open access: yesJournal of Fungi, 2021
Powdery mildew is caused by Podosphaera xanthii, and is one of the most important diseases that attacks Spanish cucurbit crops. Fungicide application is the primary control tool; however, its effectiveness is hampered by the rapid development of ...
Alejandra Vielba-Fernández   +5 more
doaj   +1 more source

Quorum sensing regulates heteroresistance in Pseudomonas aeruginosa

open access: yesFrontiers in Microbiology, 2022
The prevalence and genetic mechanism of antibiotic heteroresistance (HR) have attracted significant research attention recently. However, non-genetic mechanism of HR has not been adequately explored. The present study aimed to evaluate the role of quorum
Yang Lu   +12 more
doaj   +1 more source

The relative fitness of drug-resistant Mycobacterium tuberculosis: a modelling study of household transmission in Peru. [PDF]

open access: yes, 2017
The relative fitness of drug-resistant versus susceptible bacteria in an environment dictates resistance prevalence. Estimates for the relative fitness of resistant Mycobacterium tuberculosis (Mtb) strains are highly heterogeneous and mostly derived from
Friedland, JS   +5 more
core   +7 more sources

Optimal phenotypic plasticity in a stochastic environment minimizes the cost/benefit ratio [PDF]

open access: yes, 2012
This paper addresses the question of optimal phenotypic plasticity as a response to environmental fluctuations while optimizing the cost/benefit ratio, where the cost is energetic expense of plasticity, and benefit is fitness.
Coquillard, Patrick   +2 more
core   +5 more sources

Emergence of a High-Risk Klebsiella michiganensis Clone Disseminating Carbapenemase Genes

open access: yesFrontiers in Microbiology, 2022
Klebsiella michiganensis is emerging as an important human pathogen of concern especially strains with plasmid-mediated carbapenemase genes. The IncX3-blaNDM-5 plasmid has been described as the primary vector for blaNDM-5 dissemination.
Isaac Prah   +6 more
doaj   +1 more source

The fitness costs of antibiotic resistance mutations [PDF]

open access: yesEvolutionary Applications, 2014
AbstractAntibiotic resistance is increasing in pathogenic microbial populations and is thus a major threat to public health. The fate of a resistance mutation in pathogen populations is determined in part by its fitness. Mutations that suffer little or no fitness cost are more likely to persist in the absence of antibiotic treatment. In this review, we
Melnyk, Anita H   +2 more
openaire   +2 more sources

Mycobacterium tuberculosis: mechanisms and interactions between drug resistance mutations with fitness costs and the drug resistance phenotypes [PDF]

open access: yesInfectious Diseases and Tropical Medicine, 2022
Multidrug-resistant and extensively drug-resistant Mycobacterium tuberculosis are no news and have contributed to the continued scourge of tuberculosis today. Acquisition of drug resistance by M.
R. Olamilekan Adesola   +1 more
doaj   +1 more source

Cost-Based Fitness in Conformance Checking

open access: yes2011 Eleventh International Conference on Application of Concurrency to System Design, 2011
Experience in business process analysis shows that operational processes often do not conform to process models. Although classical conformance checking techniques can identify deviations of process executions from predefined models, they may produce inaccurate results due to strong assumptions.
Adriansyah, A.   +2 more
openaire   +2 more sources

Fitness Cost of Chromosomal Drug Resistance-Conferring Mutations [PDF]

open access: yesAntimicrobial Agents and Chemotherapy, 2002
ABSTRACTTo study the cost of chromosomal drug resistance mutations to bacteria, we investigated the fitness cost of mutations that confer resistance to different classes of antibiotics affecting bacterial protein synthesis (aminocyclitols, 2-deoxystreptamines, macrolides).
Sander, Peter   +6 more
openaire   +2 more sources

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