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Clinical and Experimental Immunology logoLink to Clinical and Experimental Immunology
. 1987 Feb;67(2):252–261.

Immunity to schistosomiasis mansoni in guinea-pigs vaccinated with radiation-attenuated cercariae: I. Humoral responses against skin-stage schistosomula.

J R Gordon, D J McLaren
PMCID: PMC1542601  PMID: 3111760

Abstract

The anti-schistosomular humoral responses of guinea-pigs vaccinated with radiation-attenuated cercariae of Schistosoma mansoni have been investigated in vitro. The sera of vaccinated animals contain schistosomulicidal complement-fixing antibodies which peak in titre at week 5 after vaccination and predominantly consist of IgG2 and IgM antibodies. The ability of the serum to arm macrophages from normal animals to bind to schistosomula, also peaks in titre at week 5 and is associated with IgG2 antibodies. Basophils from normal animals can be sensitized in vitro by vaccine serum to degranulate in the presence of schistosomular antigens. This anaphylactic antibody activity is associated with IgG1 but not IgE antibodies, and peaks in titre at week 10. Three antigens (14 kD, 20 kD and 43 kD) are specifically and transiently detected by vaccine serum on Western blots of schistosomular proteins; these antigens are first discernible at week 4, but were virtually undetectable at week 12.

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Selected References

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