1887

Abstract

Summary

Among a group of 116 clinically significant isolates of spp., 24 exhibited -lactamase activity greater than the basal level characteristic of most strains. Investigation of specific enzyme activity, iso-electric point and enzyme inhibition profiles revealed that the -lactamases involved could be divided into four groups, some showing similarity to those described in previous studies. Seven of the enzymes were able to hydrolyse cefoxitin, latamoxef or imipenem, and eight enzymes degraded penicillin in the presence of clavulanic acid. Five strains showed reduced susceptibility to cefoxitin, latamoxef or imipenem which was not associated with -lactamase activity.

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1992-02-01
2022-05-25
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