PMID: 6634219Sep 1, 1983Paper

Studies on the development of anti-schistosomular surface antibodies by mice exposed to irradiated cercariae, adults and/or eggs of S. mansoni

Parasite Immunology
Q BickleB J Andrews

Abstract

Levels of antibody a binding to the schistosomulum surface and b mediating in vitro eosinophil-dependent cytotoxicity of schistosomula were studied and compared to the in vivo levels of resistance to cercarial challenge in mice infected with irradiated cercariae, unirradiated cercariae of single or mixed sex, or injected with eggs. Antibody-binding was assessed by counting the number of IgG-Fc-receptor bearing cells (P388D1 cells) adhering to mechanically-transformed schistosomula. Significant levels of adherence occurred with sera taken from 1--2 weeks following exposure to irradiated cercariae, the level increasing gradually thereafter and being enhanced by repeated exposure. Sera from the bisexual infection showed a dramatic increase in binding activity between weeks 5--8, and with the single sex infections there was a steady rise up to week 10 followed by a sharp rise between weeks 10--12. Weekly injections of eggs produced a steady rise in serum binding activity. Sera taken just before challenge were also tested for their ability to mediate killing of schistosomula by eosinophil-enriched preparations of heterologous rat peritoneal exudate cells in vitro. Significant levels of killing occurred with all sera, but the greates...Continue Reading

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Feb 1, 1990·Parasitology Today·D W Dunne
Dec 1, 1990·Parasitology Today·E Linder
Aug 1, 1995·Parasitology Today·D RichterF R Matuschka
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