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. 1990 Sep;58(9):2962–2965. doi: 10.1128/iai.58.9.2962-2965.1990

Immunotherapeutic efficacy of bovine colostral immunoglobulins from a hyperimmunized cow against cryptosporidiosis in neonatal mice.

R Fayer 1, A Guidry 1, B L Blagburn 1
PMCID: PMC313595  PMID: 2387630

Abstract

Infection with Cryptosporidium parvum, a ubiquitous protozoan parasite of virtually all mammals, can cause mild to severe diarrhea in immunocompetent hosts and life-threatening diarrhea in immunocompromised hosts. Passive immunotherapy of experimentally infected animals and naturally infected humans with hyperimmune bovine colostrum has been reported to be efficacious, whereas chemotherapy has not. In this study, the efficacy of specific immunoglobulin isotypes purified from bovine colostrum from a cow hyperimmunized with Cryptosporidium parvum was assessed in neonatal BALB/c mice. Mice were orally infected with oocysts and treated with whole whey immunoglobulin G1 (IgG1), IgG2, IgA, or IgM at six intervals from 22 to 66 h postinfection. In histologic sections of intestine examined at 72 h postinfection, the reduction in number of intestinal stages in treated mice versus untreated controls was very highly significant (P less than 0.0001). The greatest reduction in parasite number was found in mice treated with IgG1, IgA, or whey.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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