(redirected from b-lactam)
Also found in: Dictionary.
Related to b-lactam: Cephalosporins


A class of broad-spectrum antibiotics that are structurally and pharmacologically related to the penicillins and cephalosporins.


(bā′tə-lăk′təm, bē′-)
1. A lactam composed of a four-membered ring, formed by intramolecular condensation of an amino acid in which the amino group is located at the beta position, or any compound containing this group.
2. A beta-lactam antibiotic.


(bā'tă lak'tam)
Class of broad-spectrum antibiotics structurally and pharmacologically related to penicillins and cephalosporins.
References in periodicals archive ?
In conclusion, the drug resistance is directly related to the clinical use time and range of b-lactam antibiotics.
Keywords: Avian Escherichia coli; b-lactam antibiotics; ESBLs gene; PCR
The b-lactam antibiotic including penicillins, cephalosporins, cephamycins, monocyclic lactams and other atypical class refers to a large class of antibiotics containing the b-lactam ring structure.
coli to b-lactam antibiotic is that it can produce ESBLs which can destroy the b-lactam ring through hydrolysis or non-hydrolysis and inactivate the antibiotic (George et al.
To monitor the b-lactam antibiotics resistance and to find out the mechanisms as well as to guide clinical medication, this study detected the b-lactam antibiotics resistance and ESBLs gene of avian E.
PCR Amplification of b-lactam Antibiotic Resistance Genes
Distribution of b-lactam Antibiotic Resistance Genes in Avian E.
This is a big problem in studying b-lactam resistance, as b-lactam resistance can increase due to inappropriate b-lactam use.
Group 6 - Antibacterials B-lactam penicillin susceptible to B-lactamase
Objective: The production of AmpC b-lactamases is one of the common mechanisms of b-lactam drugs resistance.
AmpC b-lactamase producing organisms are major clinical concern because they are usually resistant to all b-lactam drugs, except for cefepime, cefpirome and carbapenems.
Group 29 - Antibacterials B-lactam antibiotics - penicillin resistant to B-lactamase;