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 (bā′tə-lăk′tə-mās′, -māz′, bē′-)
Any of various enzymes that hydrolyze and inactivate beta-lactam antibiotics such as penicillin, found in many antibiotic-resistant bacteria.

[beta-lactam, cyclic amide occurring in penicillins (beta + lact(one) + am(ide)) + -ase.]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.beta-lactamase - enzyme produced by certain bacteria that inactivates penicillin and results in resistance to that antibiotic
enzyme - any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions


a. beta-lactamasa, enzima que destruye el conjunto de beta-lactam antibióticos penicílicos haciéndolos no efectivos;
beta-lactamase resistanceresistencia de beta-lactamasa, a algunos tipos de penicilina.
References in periodicals archive ?
The main objective of study is to determine the frequency of ESBLs and Amp C beta lactamase producing Escherichia coli and Klebsiella pneumonia isolated from neonatal sepsis in a tertiary care hospital Lahore.
Three Dimensional Extract Test (3DET) was used as standard phenotypic method to detect Amp C beta lactamase production.
Prevalence of extended spectrum beta lactamase and AmpC beta lactamase producers among Escherichia Coli isolates in a large tertiary care hospital in Jaipur.
Frequency of Extended Spectrum Beta Lactamase Producing Enterobacteriaceae Among Urinary Pathogen Isolates.
Extended spectrum beta lactamase (ESBL) production is one of the different mechanisms of drug resistance in Gram-negative bacilli predominantly present in E.
Multiplex PCR for blaCTX-M & blaSHV in the extended spectrum beta lactamase (ESBL) producing gram-negative isolates.
Extended spectrum beta lactamase (ESBL) mediated resistance to third generation cephalosporins among klebsiella pneumoniae in Chennai.
Extended spectrum beta lactamase production in gram-negative isolates from cases of septicemia.