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Comparative In Vitro Activity of Three Aminoglycosidic Antibiotics: BB-K8, Kanamycin, and Gentamicin

Authors
  • Pauline K. W. Yu
  • John. A. Washington
Publication Date
Aug 01, 1973
Source
PMC
Keywords
License
Unknown

Abstract

Kanamycin, BB-K8, and gentamicin were tested in parallel against 1,037 bacterial strains isolated from clinical material. The activity of BB-K8 at 20 μg/ml was comparable to that of gentamicin at 8 μg/ml against Pseudomonas aeruginosa and against Enterobacteriaceae, with the exception of gentamicin-resistant strains of Proteus rettgeri and Providencia stuartii, in which case the activities of BB-K8 and kanamycin were the same. BB-K8 exhibited little or no activity against streptococci. The activity of BB-K8 was affected by pH and inoculum size. A regression graph for inhibition data with a 10-μg disk of BB-K8 was developed, and synergistic activity of penicillin and BB-K8 against Streptococcus faecalis was tested.

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