Efficacy of the immunoblot assay for cysticercosis in pigs and modulated expression of distinct IgM/ IgG activities to Taenia solium antigens in experimental infections
Date
1991-08Author
Tsang, Victor CW
Pilcher, Joy A
Zhou, Wei
Boyer, Anne E
Kamango-Sollo, Ernest IP
Rhoads, Marcia L
Murrell, K Darwin
Schantz, Peter M
Gilman, Robert H
Language
enMetadata
Show full item recordAbstract
A recently invented immunoblot assay for human cysticercosis was evaluated for efficacy in pigs. The test population consists of 45 pigs with parasitologically confirmed cysticercosis, 47 with heterologous infections, 45 SPF or concrete raised control animals. With this group of 137 animals the test performance was 100% sensitive and 100% specific.
The antigen-specific responses of immunoglobulin A (IgA), IgG and IgM in four pigs infected with Taenia solium eggs derived from a human were quantified by immunoblot. Antigen-specific activities were observed as early as 1 week postinfection. The first antigen-specific isotypic response was IgM antibodies directed against a glycoprotein at 97 KD (GP97). This activity generally disappeared between the sixth and ninth week postinfection. Between Weeks 5 and 8, IgG activity rose as IgM activity fell. The IgG activity, however, was directed mostly towards GP50 and GP42 antigens. If the same response occurs in people with cysticercosis, identifying specific isotype activity may help to distinguish new infection from old.
URI
http://www.sciencedirect.com/science/article/pii/016524279190053Fhttp://hdl.handle.net/11295/88538
Citation
Veterinary Immunology and Immunopathology Volume 29, Issues 1–2, August 1991, Pages 69–78Publisher
University of Nairobi