Drug resistance and R plasmids of Escherichia coli strains isolated from pigs, slaughterers, and breeders of pigs in Japan.

Antimicrobial Agents and Chemotherapy
K SaidaS Mitsuhashi

Abstract

We isolated 1,120 drug-resistant Escherichia coli strains from pigs, slaughterers, breeders of pigs, and urban residents and examined their drug resistance. With reference to resistance to tetracycline (Tc) chloramphenicol (Cm), streptomycin (Sm), and sulfanilamide (Su), Tcr, Smr, and Sur strains were most frequently isolated from pigs (57.9%), followed by slaughterers (50.2%) and breeders (42.4%). By contrast, the isolation frequencies of Tcr, Smr, and Sur strains from urban residents were low (12.0%). The isolation frequencies of R plasmids from resistant strains were more than 50% in the case of pigs, slaughterers, and breeders, whereas they were only 13.8% in urban residents. Kanamycin-resistant strains were frequently isolated from pigs (40.3%), slaughterers (22.6%), and breeders of pigs (25.4%), but seldom (only 3.4%) from urban residents. With ampicillin resistance, the frequencies of strains from pigs, slaughterers, breeders, and urban residents were 30.0, 21.5, 5.6, and 13.8%, respectively. R plasmids specifying these latter resistances were frequently seen from pigs (24.0%), slaughterers (23.6%), and breeders (21.1%), but they were not isolated from urban residents. The results suggest that the porcine gut can functio...Continue Reading

References

Dec 1, 1975·Journal of General Microbiology·E S AndersonG A Willshaw
Aug 10, 1968·British Medical Journal·E S Anderson
Jun 1, 1969·Japanese Journal of Microbiology·T TanakaS Mitsuhashi
Jun 1, 1980·Japanese Journal of Medical Science & Biology·A SatoS Mitsuhashi
Jul 1, 1950·Journal of Bacteriology·B D DAVIS, E S MINGIOLI

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Citations

Oct 20, 2007·Tropical Animal Health and Production·K Na lampangV Kitikoon
Aug 1, 1994·Epidemiology and Infection·R NijstenE Stobberingh
Jan 1, 1983·Microbiology and Immunology·H KanaiS Mitsuhashi
Aug 27, 2013·Applied and Environmental Microbiology·Ashley ShadeJo Handelsman
Sep 4, 2020·Animal Science Journal = Nihon Chikusan Gakkaihō·Akiko SakumaHisashi Aso

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