Examinando por Autor "Roszowiak, A."
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Publicación Acceso Abierto Phenotypic and genetic analyses of 111 clinical and environmental O1, O139, and non-O1/O139 Vibrio cholerae strains from different geographical areas(Cambridge University Press, 2012-08-05) Sellek Cano, Ricela; Niemcewicz, Marcin; Olsen, Jaran; Bassy Alvarez, Olga; Lorenzo Lozano, P.; Martí, L.; Roszowiak, A.; Kocik, J.; Cabria Ramos, J. C.A total of 111 clinical and environmental O1, O139 and non-O1/O139 Vibrio cholerae strains isolated between 1978 and 2008 from different geographical areas were typed using a combination of methods: antibiotic susceptibility, biochemical test, serogroup, serotype, biotype, sequences containing variable numbers of tandem repeats (VNTRs) and virulence genes ctxA and tcpA amplification. As a result of the performed typing work, the strains were organized into four clusters: cluster A1 included clinical O1 Ogawa and O139 serogroup strains (ctxA + and tcpA +); cluster A2 included clinical non-O1/O139 strains (ctxA − and tcpA −), as well as environmental O1 Inaba and non-O1/O139 strains (ctxA − and tcpA −/tcpA +); cluster B1 contained two clinical O1 strains and environmental non-O1/O139 strains (ctxA − and tcpA +/tcpA −); cluster B2 contained clinical O1 Inaba and Ogawa strains (ctxA + and tcpA +). The results of this work illustrate the advantage of combining several typing methods to discriminate between clinical and environmental V. cholerae strains.
