TY - JOUR AU - Rusak, Leonardo Alves AU - dos Reis, Cristhiane Moura Falavina AU - Barbosa, André Victor AU - Santos, André Felipe Mercês AU - Paixão, Renata AU - Hofer, Ernesto AU - Vallim, Deyse Christina AU - Asensi, Marise Dutra PY - 2014/12/15 Y2 - 2024/03/29 TI - Phenotypic and genotypic analysis of bio-serotypes of Yersinia enterocolitica from various sources in Brazil JF - The Journal of Infection in Developing Countries JA - J Infect Dev Ctries VL - 8 IS - 12 SE - Original Articles DO - 10.3855/jidc.4553 UR - https://jidc.org/index.php/journal/article/view/25500651 SP - 1533-1540 AB - <p class="SmallText">Introduction: <em>Yersinia enterocolitica</em> is a well-known foodborne pathogen widely distributed in nature with high public health relevance, especially in Europe.</p> <p class="SmallText">Methodology: This study aimed to analyze the pathogenic potential of <em>Y. enterocolitica</em> isolated strains from human, animal, food, and environmental sources and from different regions of Brazil by detecting virulence genes <em>inv, ail, ystA</em>, and <em>virF</em> through polymerase chain reaction (PCR), phenotypic tests, and antimicrobial susceptibility analysis. Pulsed-field gel electrophoresis (PFGE) was used for the assessment of phylogenetic diversity.</p> <p class="SmallText">Results: All virulence genes were detected in 11/60 (18%) strains of serotype O:3, biotype 4 isolated from human and animal sources. Ten human strains (4/O:3) presented three chromosomal virulence genes, and nine strains of biotype 1A presented the <em>inv</em> gene. Six (10%) strains were resistant to sulfamethoxazole-trimethoprim, seven (12%) to tetracycline, and one (2%) to amikacin, all of which are used to treat yersiniosis. AMP-CEF-SXT was the predominant resistance profile. PFGE analysis revealed 36 unique pulsotypes, grouped into nine clusters (A to I) with similarity ≥ 85%, generating a diversity discriminatory index of 0.957. Cluster A comprised all bio-serotype 4/O:3 strains isolated from animal and humans sources.</p> <p class="SmallText">Conclusions: This study shows the existence of strains with the same genotypic profiles, bearing all virulence genes, from human and animal sources, circulating among several Brazilian states. This supports the hypothesis that swine is likely to serve as a main element in <em>Y. enterocolitica</em> transmission to humans in Brazil, and it could become a potential threat to public health as in Europe.</p> ER -