Correlation of Virulence Plasmid and Serological Tests of Human Yersinia enterocolitica Isolates

Abstract

Pathogenicity of nine human Yersinia enterocolitica isolates of Iran were tested by serological tests and molecular approaches. Of these nine isolates two harbored a plasmid (1478 & 1479). These two isolates showed different patterns of total proteins compared with others. Autoagglutination (AA) and resistance to the bactericidal effect of human serum tests(SR) used to differentiate between virulent and avirulent isolates of Y. enterocolitica. Isolates 1478 and 1479 showed to be AA+ / SR+ where as others were AA- / SR- . With these findings it is evident that the serological tests can be used to identify virulent from avirulent isolates.

Keywords

• plasmid / yersinia enterocolitica - pathogenicity / yersinia infections- diagnosis