Reduced susceptibility to co-amoxiclav in Escherichia coli, Salmonella typhimurium and Klebsiella pneumoniae isolated in Romania between 1985 and 1993.
By determining the beta-lactam susceptibility of Enterobacteriaceae isolated in Eastern Romania from 1985 to 1993, three Escherichia coli, three Salmonella typhimurium and one Klebsiella pneumoniae isolates with reduced susceptibility to co-amoxiclav were found. The antibiotic susceptibility of the isolates and their E. coli derivatives, and kinetic values suggested the following resistance mechanisms: hyperproduction of TEM in S. typhimurium, limited antibiotic uptake in K. pneumoniae and OXA production in one strain of E. coli. Despite a normal beta-lactamase activity, the two remaining E. coli strains and their derivatives were less susceptible to co-amoxiclav.
Espinasse
F
F
Service de Microbiologie, Hôpital Ambroise Paré, Faculté de Médecine Paris Ouest, Boulogne, France.
Gheorghiu
R
R
Poiata
A
A
Labia
R
R
Nicolas-Chanoine
M H
MH
D000658:Amoxicillin / Q000494:pharmacology; D019980:Amoxicillin-Potassium Clavulanate Combination; D002969:Clavulanic Acids / Q000494:pharmacology; D004359:Drug Therapy, Combination / Q000494:pharmacology*; D004926:Escherichia coli / Q000187:drug effects* / Q000201:enzymology / Q000235:genetics; D004927:Escherichia coli Infections / Q000382:microbiology; D006801:Humans; D007525:Isoelectric Focusing; D007710:Klebsiella Infections / Q000382:microbiology; D007711:Klebsiella pneumoniae / Q000187:drug effects* / Q000201:enzymology / Q000235:genetics; D008826:Microbial Sensitivity Tests; D010957:Plasmids; D012383:Romania; D012480:Salmonella Infections / Q000382:microbiology; D012486:Salmonella typhimurium / Q000187:drug effects* / Q000201:enzymology / Q000235:genetics; D001618:beta-Lactamases / Q000032:analysis / Q000378:metabolism
D002969:Clavulanic Acids; D019980:Amoxicillin-Potassium Clavulanate Combination; D000658:Amoxicillin; D001618:beta-Lactamases