In 23 untreated adult periodontitis patients, the occurrence of beta-lactamase producing periodontal bacteria was determined. In addition to non-selective isolation media, selective isolation and growth of beta-lactamase positive subgingival bacterial species was carried out on blood agar plates supplemented...
distribution. NDM-1 positive bacteria were not detected in lake water samples or in the samples that were collected from the water sources that were purified by reverse osmosis before public distribution. Detection of NDM-1 positive bacteria using LAMP was found to be safe, sensitive and rapid f...
Beta-Lactamase-Positive Amoxicillin/Clavulanate-Resistant Beta-Lactamase-Producing Bacteria beta-lactamase-resistant antibiotic beta-lactamase-resistant antibiotic ▼ Complete English Grammar Rules is now available in paperback and eBook formats. Make it yours today!
beta-lactamase (redirected fromBeta lactamase) Thesaurus Medical Encyclopedia be·ta-lac·ta·mase (bā′tə-lăk′tə-mās′, -māz′, bē′-) n. Any of various enzymes that hydrolyze and inactivate beta-lactam antibiotics such as penicillin, found in many antibiotic-resistant bacteria. ...
baumanii. In the latter, the intrinsically weaker carbapenemase activity is augmented by coupling β-lactamase production with an additional resistance mechanism, such as decreased membrane permeability or increased active efflux.74 Gram-Positive Bacteria Among gram-positive bacteria, staph...
aureus and other bacteria can produce beta lactamase, such as penicillin enzymes, cephalosporin enzymes, etc., so that the decomposition of penicillin lose its activity. The structure of penicillin was modified, and a large steric hindrance group was introduced on the 6 bit side chain amide...
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TEM-1 beta-lactamase is the most widespread enzyme to confer beta-lactam antibiotic resistance to gram-negative bacteria. It is a monomeric protein that requires no metals or cofactors for activity. TEM-1 beta-lactamase efficiently hydrolyzes most penicillin and cephalosporin substrates, including nit...
positive bacteria such asStaphylococcus aureus, and gram-negative bacteria includingH. influenzae,Neisseria gonorrhoeae,Moraxella catarrhalis,Bacteroides fragilis, and someEnterobacteriaceae. Because they are generally less effective against chromosomally mediated type 1 beta-lactamases, manyCitrobacter,Enterobacter,...
Beta-lactamase induction and cell wall metabolism in Gram-negative bacteria Production of beta-lactamases, the enzymes that degrade beta-lactam antibiotics, is the most widespread and threatening mechanism of antibiotic resistance... X Zeng,J Lin - 《Front Microbiol》 被引量: 107发表: 2013年 Molec...