RAW MILK AS A RESERVOIR OF ANTIBIOTIC RESISTANT ENTEROPATHOGENIC ESCHERICHIA COLI.

Autor: Sunil, Devika D., Mathew, Binsy, C., Latha., Jolly, Deepa, K., Radha
Předmět:
Zdroj: Journal of Indian Veterinary Association; Dec2023, Vol. 21 Issue 3, p51-60, 10p
Abstrakt: Escherichia coli is a commensal in the intestine of humans and warm-blooded animals. Usually, they are harmless except certain strains like enteropathogenic, enteroinvasive, enteroaggregative, enterotoxigenic, enterohaemorrhagic and diffusely adherent E. coli. The present study was conducted to study the prevalence antibiotic resistant enteropathogenic Escherichia coli (EPEC) from raw cow milk in Ernakulam district of Kerala in India. A total of 100 raw cow milk samples were collected from various milk societies of the district. Escherichia coli was isolated by conventional culture technique on MacConkey agar. The culture and biochemical positive isolates were further confirmed by molecular technique by targeting genus specific 16S rRNA gene. The isolates obtained were further subjected to molecular confirmation by targeting eaeA and bfpA genes specific for enteropathogenic E. coli. The antibiotic sensitivity pattern of the confirmed isolates was tested against commonly used antibiotics by disc diffusion assay. Further molecular characterisation of the isolates was carried out by targeting dfrA1, dfrA10 for trimethoprim resistance, sul1 and sul2 for sulphamethoxazole resistance, and aadA1 and aadA2 for streptomycin resistance by Polymerase chain reaction (PCR). [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index