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  • Title: Comparison of Vibrio parahaemolyticus hemolysin (Vp-TRH) produced by environmental and clinical isolates.
    Author: Yoh M, Miwatani T, Honda T.
    Journal: FEMS Microbiol Lett; 1992 Apr 15; 71(2):157-61. PubMed ID: 1601286.
    Abstract:
    TDH-related hemolysin (Vp-TRH) produced by Kanagawa-phenomenon-negative (KP-) Vibrio parahaemolyticus has been demonstrated to be a possible virulence determinant. Though almost half of KP- isolates examined from diarrhoeal patients produced Vp-TRH, few reports mentioned the ability of environmental isolates to produce Vp-TRH. Considering the route of infection with V. parahaemolyticus, this toxin must be produced by the organisms in the sea or in sea food. To confirm that Vp-TRH produced by V. parahaemolyticus could be involved in sea-food-borne diarrhoeas, Vp-TRH-producing strains were isolated from the environment, identified and hemolysin purified from these strains was compared to hemolysin (Vp-TRH) isolated from diarrhoeal patients. The results showed that the hemolytic activity, antigenicity, reactivity in the rabbit ileal loop test and N-terminal amino acid sequence of Vp-TRH from environmental strains was indistinguishable from the toxin of clinical origin.
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