Diversity of the mechanisms of resistance to beta-lactam antibiotics. 1991

J M Frère, and B Joris, and B Granier, and A Matagne, and F Jacob, and C Bourguignon-Bellefroid
Laboratoire d'Enzymologie, Institut de Chimie (B6), Liège, Belgium.

The sensitivity of a bacterium to beta-lactam antibiotics depends upon the interplay between 3 independent factors: the sensitivity of the essential penicillin-binding enzyme(s), the quantity and properties of the beta-lactamase(s) and the diffusion barrier that the outer-membrane of Gram-negative bacteria can represent. Those three factors can be modified by mutations or by the horizontal transfer of genes or portions of genes.

UI MeSH Term Description Entries
D010403 Penicillin Resistance Nonsusceptibility of an organism to the action of penicillins. Penicillin Resistances,Resistance, Penicillin,Resistances, Penicillin
D010406 Penicillins A group of antibiotics that contain 6-aminopenicillanic acid with a side chain attached to the 6-amino group. The penicillin nucleus is the chief structural requirement for biological activity. The side-chain structure determines many of the antibacterial and pharmacological characteristics. (Goodman and Gilman's The Pharmacological Basis of Therapeutics, 8th ed, p1065) Antibiotics, Penicillin,Penicillin,Penicillin Antibiotics
D002463 Cell Membrane Permeability A quality of cell membranes which permits the passage of solvents and solutes into and out of cells. Permeability, Cell Membrane
D004058 Diffusion The tendency of a gas or solute to pass from a point of higher pressure or concentration to a point of lower pressure or concentration and to distribute itself throughout the available space. Diffusion, especially FACILITATED DIFFUSION, is a major mechanism of BIOLOGICAL TRANSPORT. Diffusions
D004152 Dipeptidyl-Peptidases and Tripeptidyl-Peptidases A subclass of exopeptidases that includes enzymes which cleave either two or three AMINO ACIDS from the end of a peptide chain. Dipeptidyl Peptidase,Dipeptidyl Peptidases,Dipeptidylpeptide Hydrolase,Tripeptidyl-Peptidase,Dipeptidylpeptide Hydrolases,Tripeptidyl-Peptidases,Dipeptidyl Peptidases and Tripeptidyl Peptidases,Hydrolase, Dipeptidylpeptide,Peptidase, Dipeptidyl,Tripeptidyl Peptidase,Tripeptidyl Peptidases,Tripeptidyl-Peptidases and Dipeptidyl-Peptidases
D004352 Drug Resistance, Microbial The ability of microorganisms, especially bacteria, to resist or to become tolerant to chemotherapeutic agents, antimicrobial agents, or antibiotics. This resistance may be acquired through gene mutation or foreign DNA in transmissible plasmids (R FACTORS). Antibiotic Resistance,Antibiotic Resistance, Microbial,Antimicrobial Resistance, Drug,Antimicrobial Drug Resistance,Antimicrobial Drug Resistances,Antimicrobial Resistances, Drug,Drug Antimicrobial Resistance,Drug Antimicrobial Resistances,Drug Resistances, Microbial,Resistance, Antibiotic,Resistance, Drug Antimicrobial,Resistances, Drug Antimicrobial
D006090 Gram-Negative Bacteria Bacteria which lose crystal violet stain but are stained pink when treated by Gram's method. Gram Negative Bacteria
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
D001618 beta-Lactamases Enzymes found in many bacteria which catalyze the hydrolysis of the amide bond in the beta-lactam ring. Well known antibiotics destroyed by these enzymes are penicillins and cephalosporins. beta-Lactamase,beta Lactamase,beta Lactamases
D047090 beta-Lactams Four-membered cyclic AMIDES, best known for the PENICILLINS based on a bicyclo-thiazolidine, as well as the CEPHALOSPORINS based on a bicyclo-thiazine, and including monocyclic MONOBACTAMS. The BETA-LACTAMASES hydrolyze the beta lactam ring, accounting for BETA-LACTAM RESISTANCE of infective bacteria. beta-Lactam,4-Thia-1-Azabicyclo(3.2.0)Heptanes,4-Thia-1-Azabicyclo(4.2.0)Octanes,beta Lactam,beta Lactams

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