Plasmid-coded ampicillin resistance in Haemophilus ducreyi.

Antimicrobial Agents and Chemotherapy
J A Thomson, Y R Bilgeri

Abstract

Seven of the 96 ampicillin-resistant isolates of Haemophilus ducreyi reported in the preceding article (Bilgeri et al., Antimicrob. Agents Chemother. 22:686-688, 1982) were investigated and found to harbor plasmids of 3.95, 5.2, 5.8, and 6.4 megadaltons. All except the 5.8-megadalton plasmid have been shown to code for beta-lactamase. The 6.4- and 5.2-megadalton plasmids of three isolates were conjugally transferable to a streptomycin-resistant mutant of H. ducreyi at high frequencies, perhaps due to the presence in these strains of a high-molecular-weight plasmid.

References

Apr 1, 1978·Antimicrobial Agents and Chemotherapy·G W HammondA R Ronald
Feb 1, 1979·Antimicrobial Agents and Chemotherapy·J L BruntonW L Albritton
Aug 1, 1975·Infection and Immunity·L P ElwellS Falkow
Sep 11, 1975·The Journal of Infectious Diseases·G M Thorne, W E Farrar
Aug 1, 1972·Proceedings of the National Academy of Sciences of the United States of America·S N CohenL Hsu
Feb 1, 1982·Journal of Bacteriology·H G DeneerW L Albritton
Sep 1, 1981·Annals of Internal Medicine·H H HandsfieldK K Holmes
Oct 1, 1982·Antimicrobial Agents and Chemotherapy·Y R BilgeriH J Koornhof
Mar 1, 1981·Journal of Bacteriology·C I Kado, S T Liu

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Citations

Oct 1, 1982·Antimicrobial Agents and Chemotherapy·Y R BilgeriH J Koornhof
Jul 1, 1990·Antimicrobial Agents and Chemotherapy·Y DangorH J Koornhof

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