TY - JOUR
T1 - Efficacy of the immunoblot assay for cysticercosis in pigs and modulated expression of distinct IgM/ IgG activities to Taenia solium antigens in experimental infections
AU - Tsang, Victor C.W.
AU - Pilcher, Joy A.
AU - Zhou, Wei
AU - Boyer, Anne E.
AU - Kamango-Sollo, Ernest I.P.
AU - Rhoads, Marcia L.
AU - Murrell, K. Darwin
AU - Schantz, Peter M.
AU - Gilman, Robert H.
PY - 1991/8
Y1 - 1991/8
N2 - 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.
AB - 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.
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U2 - 10.1016/0165-2427(91)90053-F
DO - 10.1016/0165-2427(91)90053-F
M3 - Article
C2 - 1949584
AN - SCOPUS:0025788987
SN - 0165-2427
VL - 29
SP - 69
EP - 78
JO - Veterinary Immunology and Immunopathology
JF - Veterinary Immunology and Immunopathology
IS - 1-2
ER -