Abstract

ESCALANTE A, Hermes; HUAMANCHAY C, Obed  and  DAVELOIS A, Kelly. La inmunocromatografía para el diagnóstico de la infección por Taenia solium en Mesocricetus auratus mediante la detección de coproantígenos*. Rev. perú. med. exp. salud publica [online]. 2001, vol.18, n.3-4, pp.57-62. ISSN 1726-4634.

Objective: To assess the immunochromatography assay for the diagnosis of Taenia solium infection in hamsters (Mesocricetus auratus) by coproantigen detection. Materials and methods: IgG anti-T. solium excretory/secretory (E/S) antigens were produced in rabbits and IgG anti-rabbit IgG, in Capra hircus "goat". A portion of the anti-T. solium E/S IgG antigens was conjugated with colloidal gold. Immunochromatography was performed in nitrocellulose paper strips in which two transversal bands with capture antibodies were fixed. The first band had rabbit anti-T. solium E/S IgG antigens (test band), and the second band had goat IgG anti-rabbit IgG (control band). The assay was assessed using a pool of three culture media samples with E/S antigens from T. solium, Hymenolepis nana, Dyphillobotrium pacificum and of Anisakis simplex larvae, as well a by a pool of three faecal samples from non-infected hamsters, from hamsters infected with H. nana, and from a pool comprising seven hamsters infected with T. solium. Results: Immunochromatography detected T. solium antigens in media samples with T. solium E/S antigens and in stool samples from hamsters infected with T. solium by staining of the test band. Negative results were obtained with culture media samples with E/S antigens from other helminths and in pooled stool samples from hamsters infected with H. nana as well as from non-infected animals. In all strips used the control band got stained. Conclusions: The immunocromatography assay is able to detect T. solium antigens, both in culture media and in stools from infected hamsters, but its sensitivity and specificity should be tested in human fecal samples for diagnosing Tenia infections through coproantigen detection.

Keywords : Teniasis; diagnosis; Inmunologic tests; Antigens.