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Beta-lactamase activity in anaerobic bacteria. 1976

A E Weinrich, and V E Del bene

A diverse group of anaerobic bacteria representing a spectrum of resistance to beta-lactam antibiotics was studied to characterize their beta-lactamase activity and relate it to resistance. The Bacteroides fragilis organisms had moderate resistance and produced a cephalosporinase with low activity. The Clostridium ramosum was intermediate in resistance and had intermediate, inducible beta-lactamase activity. The B. clostridiiformis organism was highly resistant, produced a potent inducible penicillinase, and had a barrier to the penicillin substrates. Only the beta-lactamase of C. ramosum fit Richmond's classification (class IV). Although there was a rough correlation between beta-lactamase activity and antibiotic resistance, other mechanisms are undoubtedly involved in determining resistance levels.

UI MeSH Term Description Entries
D007700 Kinetics The rate dynamics in chemical or physical systems.
D010405 Penicillinase A beta-lactamase preferentially cleaving penicillins. (Dorland, 28th ed) EC 3.5.2.-. beta-Lactamase I,AER-I beta-Lactamase,Benzylpenicillinase,Carbenicillinase,Exopenicillinase,beta Lactamase III,beta Lactamase RP4,gamma-Penicillinase,AER I beta Lactamase,Lactamase RP4, beta,beta Lactamase I,beta-Lactamase, AER-I,gamma Penicillinase
D002510 Cephalosporinase beta-Lactamase II,Cephalexin Amidase,Cephalosporin Amido-beta-Lactam Hydrolase,Cephalosporin beta-Lactamase,Amidase, Cephalexin,Amido-beta-Lactam Hydrolase, Cephalosporin,Cephalosporin Amido beta Lactam Hydrolase,Cephalosporin beta Lactamase,Hydrolase, Cephalosporin Amido-beta-Lactam,beta Lactamase II,beta-Lactamase, Cephalosporin
D003013 Clostridium A genus of motile or nonmotile gram-positive bacteria of the family Clostridiaceae. Many species have been identified with some being pathogenic. They occur in water, soil, and in the intestinal tract of humans and lower animals.
D006868 Hydrolysis The process of cleaving a chemical compound by the addition of a molecule of water.
D000581 Amidohydrolases Any member of the class of enzymes that catalyze the cleavage of amide bonds and result in the addition of water to the resulting molecules. Amidases,Amidohydrolase
D000900 Anti-Bacterial Agents Substances that inhibit the growth or reproduction of BACTERIA. Anti-Bacterial Agent,Anti-Bacterial Compound,Anti-Mycobacterial Agent,Antibacterial Agent,Antibiotics,Antimycobacterial Agent,Bacteriocidal Agent,Bacteriocide,Anti-Bacterial Compounds,Anti-Mycobacterial Agents,Antibacterial Agents,Antibiotic,Antimycobacterial Agents,Bacteriocidal Agents,Bacteriocides,Agent, Anti-Bacterial,Agent, Anti-Mycobacterial,Agent, Antibacterial,Agent, Antimycobacterial,Agent, Bacteriocidal,Agents, Anti-Bacterial,Agents, Anti-Mycobacterial,Agents, Antibacterial,Agents, Antimycobacterial,Agents, Bacteriocidal,Anti Bacterial Agent,Anti Bacterial Agents,Anti Bacterial Compound,Anti Bacterial Compounds,Anti Mycobacterial Agent,Anti Mycobacterial Agents,Compound, Anti-Bacterial,Compounds, Anti-Bacterial
D001439 Bacteroides A genus of gram-negative, anaerobic, rod-shaped bacteria. Its organisms are normal inhabitants of the oral, respiratory, intestinal, and urogenital cavities of humans, animals, and insects. Some species may be pathogenic.
D001441 Bacteroides fragilis Gram-negative bacteria occurring in the lower intestinal tracts of man and other animals. It is the most common species of anaerobic bacteria isolated from human soft tissue infections.
D065093 beta-Lactamase Inhibitors Endogenous substances and drugs that inhibit or block the activity of BETA-LACTAMASES. beta Lactamase Inhibitor,beta Lactamase Inhibitors,beta-Lactamase Inhibitor,beta Lactamase Antagonists,Antagonists, beta Lactamase,Inhibitor, beta Lactamase,Inhibitor, beta-Lactamase,Inhibitors, beta Lactamase,Inhibitors, beta-Lactamase,Lactamase Antagonists, beta,Lactamase Inhibitor, beta,Lactamase Inhibitors, beta

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