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2006, Number 3

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Vet Mex 2006; 37 (3)

Effects induced by low doses of gamma irradiation in the Taenia solium metacestode development.

Flores-Pérez FI, de Aluja AS, Martínez MJJ

Language: English/Spanish
References: 30
Page: 303-311
PDF size: 277.57 Kb.


ABSTRACT

In order to control taeniasis, cysticercosis, a study was made to evaluate the effects induced by gamma irradiation, on the in vitro evagination and development of Taenia solium in hamster intestine. Parasites were obtained from several infected pigs and irradi-ated with doses of 0.2 and 0.3 kGy; viability of the metacestodes was evaluated by the in vitro evagination assay and the inocula-tion of immunosuppressed golden hamsters (Mesocricetus auratus). The capacity to evaginate in vitro decreased (P = 0.008) in the metacestodes that were irradiated with 0.3 kGy. Immunosuppressed hamsters that were inoculated orally with the metacestodes irradiated with 0.3 and 0.2 KGy did not develop parasites in their intestine; only scolices were found adhered to the intestinal mucosa. The total amount of scolices obtained from T. solium metacestodes irradiated with 0.3 kGy was lower (P = 0.01). Based on these results it is proposed that the dose of 0.3 kGy is effective to interrupt the life cycle of Taenia solium.


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