Results 221 to 230 of about 3,637,465 (291)

An update on ampicillin resistance and β-lactamase genes of Bacteroides spp.

Journal of Medical Microbiology, 2021
Introduction. There are several β-lactamase genes described for Bacteroides strains, of which cepA and cfiA are specific for Bacteroides fragilis and define two genetic divisions. The expression and phenotypic effects of these genes are usually regulated
J. Sóki   +4 more
semanticscholar   +1 more source

Emergence of Isolates Resistant to Ampicillin

Archives of Pediatrics & Adolescent Medicine, 1989
Clinical isolates of Streptococcus faecium demonstrating ampicillin resistance were recovered from eight pediatric patients. Sites of isolation included blood, surgical wound, bile drainage, urine, burns, and peritoneal fluid. Seven patients had prolonged hospitalization, and all had been treated with broad-spectrum antibiotics prior to isolation of ...
D G, Rupar   +3 more
openaire   +2 more sources

Ampicillin Resistance in Hemophilus parainfluenzae

American Journal of Clinical Pathology, 1980
Ampicillin resistance among strains of Hemophilus is usually due to production of beta-lactamase. This paper reports the isolation of a strain of H. parainfluenzae resistant to ampicillin with no detectable beta-lactamase or amidase activity. The organism, isolated from the blood of a patient who had aortic valve endocarditis, gave a zone diameter ...
C N, Walker, P W, Smith
openaire   +2 more sources

Reponses of microbial community and antibiotic resistance genes to the selection pressures of ampicillin, cephalexin and chloramphenicol in activated sludge reactors.

Science of the Total Environment, 2020
High concentrations of antibiotics can exert strong selection pressures on the microbial community and promote the emergence and dissemination of antibiotic resistance genes (ARGs).
Ren-xin Zhao   +4 more
semanticscholar   +1 more source

Detection of beta-lactamase-negative ampicillin resistance in Haemophilus influenzae in Belgium.

Diagnostic microbiology and infectious disease, 2019
Haemophilus influenzae, a frequent colonizer of the respiratory tract, is the causative agent of several clinically important infections. In cases that require therapeutic intervention, laboratory susceptibility testing can detect beta-lactam antibiotic ...
Lise Schotte   +4 more
semanticscholar   +1 more source

The depressed P cycle contributes to the acquisition of ampicillin resistance in Edwardsiella piscicida.

Journal of Proteomics, 2019
Antibiotic-resistant bacteria are an increasingly serious threat to human health and aquaculture. To further explore bacterial antibiotic resistance mechanism, iTRAQ is used to identify a differential proteome in ampicillin-resistant LTB4(LTB4-RAMP), a ...
Yu-Bin Su   +3 more
semanticscholar   +1 more source

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