title: In-vitro activity of ticarcillin with and without clavulanic acid against clinical isolates of gram-positive and gram-negative bacteria.
abstract: The in-vitro activity of ticarcillin with and without clavulanic acid was investigated against 285 freshly isolated clinical strains of Gram-positive and Gram-negative bacteria by the agar-dilution technique on Mueller-Hinton-agar. Clavulanic acid had an excellent or moderate potentiating effect on the in-vitro activity of ticarcillin against staphylococci, Escherichia coli, Klebsiella spp., Enterobacter aerogenes, Proteus mirabilis, Citrobacter spp., Acinetobacter, Haemophilus influenzae and Bacteroides spp. No effect was seen against enterococci, indole-positive Proteus spp., Ent. cloacae, Serratia marcescens and Pseudomonas aeruginosa. The effect of clavulanic acid was dose- and inoculum-dependent.
mesh_terms: D001424:Bacterial Infections / Q000382:microbiology; D019818:Clavulanic Acid; D002969:Clavulanic Acids / Q000494:pharmacology*; D004357:Drug Synergism; D006090:Gram-Negative Bacteria / Q000187:drug effects* / Q000302:isolation & purification; D006094:Gram-Positive Bacteria / Q000187:drug effects* / Q000302:isolation & purification; D006801:Humans; D008826:Microbial Sensitivity Tests; D010403:Penicillin Resistance; D010406:Penicillins / Q000494:pharmacology*; D013045:Species Specificity; D013982:Ticarcillin / Q000494:pharmacology*
chemical_list: D002969:Clavulanic Acids; D010406:Penicillins; D019818:Clavulanic Acid; D013982:Ticarcillin