Publication: Diagnosis of opisthorchiasis by enzyme-linked immunosorbent assay using partially purified antigens.
Issued Date
1990-01-01
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ISSN
0125877X
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2-s2.0-0025134671
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Mahidol University
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SCOPUS
Bibliographic Citation
Asian Pacific Journal of Allergy and Immunology. Vol.8, No.1 (1990), 27-31
Suggested Citation
N. Poopyruchpong, V. Viyanant, E. S. Upatham, P. Srivatanakul Diagnosis of opisthorchiasis by enzyme-linked immunosorbent assay using partially purified antigens.. Asian Pacific Journal of Allergy and Immunology. Vol.8, No.1 (1990), 27-31. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/16101
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Title
Diagnosis of opisthorchiasis by enzyme-linked immunosorbent assay using partially purified antigens.
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Abstract
Opisthorchis viverrini antigens were partially purified from adult worms collected from liver and extrahepatic billary system of infected hamsters. Tegument fraction was obtained by chemical extraction, whereas other fractions were purified by Sephadex G-200 gel filtration chromatography. Five fractions of O. viverrini antigens were obtained, namely tegument extract, somatic extract, fraction 1 (P 1 ), fraction 2 (P 2 ) and fraction 3 (P 3 ), respectively. The enzyme-linked immunosorbent assay technique was used to compare the reactivity of the five partially purified antigens. The sensitivity and specificity of all five antigens were compared by testing against the sera of 78 O. viverrini-infected individuals from O. viverrini endemic areas and 70 individuals from non-endemic areas infected with hookworm, Trichuris and Ascaris including 49 individuals with negative stool examination. The assays performed with tegument extract, somatic extract and P 1 fraction were found to have 100% sensitivity, whereas the sensitivities of those with P 2 and P 3 were 96.1% and 83.3%, respectively. The tegument extract had the highest specificity as demonstrated by the lowest cross-reactivity with other parasites. Our results indicated that surface tegument is the most suitable antigen for use in immunological diagnosis of opisthorchiasis.