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Schistosoma mansoni infection of syrian golden hamster mesocricetus auratus the host humoral immune response in relation to the adult worm burdens after primary infection


, : Schistosoma mansoni infection of syrian golden hamster mesocricetus auratus the host humoral immune response in relation to the adult worm burdens after primary infection. Zeitschrift fuer Parasitenkunde 69(1): 41-52

Seven-week-old female Syrian golden hamsters (M. auratus) showed different degrees of susceptibility to S. mansoni, as assessed by the percentage of cercariae recovered as adult worms 6 wk after infection. Plasma of the low (A), medium (B) and high (C) susceptibility groups were tested immunochemically. No differences were observed in the concentrations of albumin and .alpha.1-, .alpha.2-, .beta.- and .gamma.-globulins as measured by cellulose acetate electyrophoresis. A significantly higher percentage of animals in groups A and B than in group C had an S. mansoni specific beforked IgG precipitin band and specific antibodies against a worm tegumental antigen preparation (AWT). Conversely, more animals in group C made antibodies against a denuded worm-body antigen preparation (AWB) than in groups A and B. By using the enzyme-linked immunsorbent assay, no significant differences in antibody titers against AWT, AWB and a total worm antigen (AVA) were observed in the animals in groups A, B and C. Considering the immunochemical data in relation to the distribution pattern of susceptibility to infection, the intensity of S. mansoni infection in the hamster may be a polygene-controlled phenomenon and depends on the presentation of differing parasite antigenic component(s) to the host.

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