resistant a. 1.有抵抗力的,抵抗的,阻止的,抗…的,耐…的 beta n. 1. 贝塔,希腊字母中的第二个字母 2.(系列中)第二(个) 3. 公测 adj. 【化学】β位的,第二位的 resistant 【构词成分】 (构成形容词)表示"防(或抗,耐)...的"(如:bullet-resistant防弹的) pre beta lipoprotein 【化】 前...
resistance - the degree of unresponsiveness of a disease-causing microorganism to antibiotics or other drugs (as in penicillin-resistant bacteria) bacteria, bacterium - (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; ...
Four of eight cephalosporinase-producing strains were resistant to cefoxitin, which was completely resistant to hydrolysis by the β-lactamases. Cefozolin, cefamandole and cefazaflur inhibited several of these strains in spite of destruction by the β-lactamase. Several cephalosporins need to be ...
The meaning of BETA-LACTAMASE is any of various bacterial enzymes that inactivate the penicillins and cephalosporins by hydrolyzing them. How to use beta-lactamase in a sentence.
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. ...
Most strains ofP aeruginosa(as well asEnterobacterspp,Citrobacter freundii,Providenciaspp,Morganella morganii, andSerratiaspp) that are resistant to third-generationcephalosporinsproduce a functional group 1 (molecular class C) beta-lactamase. A representative of this class is theAmpC enzyme. Characterist...
Structurally similar to other beta-lactams, the cephalosporins are another commonly utilized group of antibiotics with unique characteristics. Unlike some of the penicillin, the cephalosporins are generally resistant to penicillinases, making them active against a wide variety of organisms (Beauduy & Wins...
A cefoxitin-resistant Bacteroides fragilis isolate, TAL 4170, which inactivates cefoxitin, was able to transfer beta-lactamase-mediated cefoxitin resistance to a susceptible B. fragilis recipient. Cefoxitin-resistant transconjugants acquired a new beta-lactamase with a pI of 8.1 and were able to inac...
Four of the plants showed substantial potentiation of the beta-lactams against the beta-lactam resistant bacterial strains and seem to have potential as beta-lactamase inhibitors (including against Extended Spectrum Beta-lactamase producers). The presence of beta-lactamase inhibitory potential in the ...
59 KPC-type beta-lactamases are inhibited by clavulanic acid and tazobactam, but isolates expressing KPC can be resistant to beta-lactamase inhibitor/beta-lactam combinations due to other resistance mechanisms encoded by the KPC-containing plasmid.59 The Ambler class B beta-lactamases (Bush–Jacoby–...