1 August 1995

Bactericidal and morphological effects of amoxicillin on Helicobacter pylori

Abstract

The growth kinetics of Helicobacter pylori after it has been exposed to amoxicillin have been investigated in conjunction with studies of cell morphology. A potent bactericidal effect was observed at concentrations 10-fold higher than the MIC, but this was accompanied by an increase in the residual numbers of coccoid forms observed. In the presence of 10 micrograms of amoxicillin per ml, these forms could be detected as rapidly as 6 h after exposure to the antibiotic. Although the clinical relevance of coccoid forms remains unknown, such forms should be considered when potential anti-Helicobacter agents are tested in vitro.

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Published In

cover image Antimicrobial Agents and Chemotherapy
Antimicrobial Agents and Chemotherapy
Volume 39Number 8August 1995
Pages: 1859 - 1861
PubMed: 7486933

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Published online: 1 August 1995

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Authors

V Berry
SmithKline Beecham Pharmaceuticals, Brockham Park, Betchworth, Surrey, England.
K Jennings
SmithKline Beecham Pharmaceuticals, Brockham Park, Betchworth, Surrey, England.
G Woodnutt
SmithKline Beecham Pharmaceuticals, Brockham Park, Betchworth, Surrey, England.

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