Early antibody responses in human schistosomiasis

Clinical and Experimental Immunology
B EvengårdE Linder

Abstract

Early diagnosis is important when handling patients with acute schistosomiasis. This state is usually more severe in travellers and tourists than in the immune, resident patients. With increased travelling to areas endemic for schistosomiasis, a tool is needed to solve the problem of differential diagnosis due to the non-specific symptoms of the early stages of the disease. Early appearance of antibodies against excretory/secretory antigens of the intestinal tract in the adult worm was seen in six individuals recently infected with Schistosoma mansoni, using an indirect immunofluorescence technique. The antibodies were of IgM, IgG and IgA classes, and of the IgG1, IgG3 and IgA1 subclasses as detected by ELISA using an antigen preparation of adult worm. On immunoblots, using a freeze-dried adult worm antigen, IgG1 and IgG3 antibodies recognized antigens of 32-35 kD. Antibodies against these antigens could thus be a marker of early infection in previously non exposed visitors to endemic areas.

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Citations

May 1, 1992·Clinical and Experimental Immunology·S DhandayuthapaniV N Bhatia
Dec 1, 1994·Scandinavian Journal of Immunology·B EvengårdC Auriault
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Jan 15, 1997·Medizinische Klinik·T JelinekH D Nothdurft

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