beta-lactamase


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beta-lactamase

[¦bād·ə ′lak·tə‚mās]
(microbiology)
A bacterial enzyme that catalyzes the hydrolysis of the lactam ring in some penicillin antibiotics, rendering them ineffective.
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References in periodicals archive ?
Meropenem is stable to hydrolysis by most beta-lactamases, including penicillinases and cephalosporinases produced by gram-negative and gram-positive bacteria, with the exception of carbapenem hydrolyzing beta-lactamases.
Molecular characterization of addiction systems of plasmids encoding extended-spectrum beta-lactamases in Escherichia coli.
In the present study AmpC beta-lactamase producing bacteria were 22.
Rapid dissemination and diversity of CTX-M extended-spectrum beta-lactamase genes in commensal Escherichia coli isolates from healthy children from low-resource settings in Latin America.
A functional classification scheme for beta-lactamases and its correlation with molecular structure.
Extended spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae: considerations for diagnosis, prevention and drug treatment.
These recognition of groups are ACC, DHA, CMY, EBC, FOX, and MOX9 which the CIT-type AmpC beta-lactamases are universally detected.
We have seen truly impressive bacterial eradication in highly resistant strains generated by combination of this beta-lactamase inhibitor with existing beta-lactam antibiotics," commented Christopher G.
Prevalence of plasmid-mediated AmpC beta-lactamases in a Chinese university hospital from 2003 to 2005: First report of CMY-2-Type AmpC beta-lactamase resistance in China.
Patterns and mechanisms of resistance to beta-lactams and beta-lactamase inhibitors in uropathogenic Escherichia coli isolated from dogs in Portugal.
This step follows the proprietary oral beta-lactamase enzyme evaluation, which was conducted by FUJIFILM Diosynth Biotechnologies UK.

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