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Title: A simplified method for the fractionation of Gnathostoma-specific antigens for serodiagnosis of human gnathostomosis
Authors: Siriporn Tuntipopipat
Runglawan Chawengkirttikul
Stitaya Sirisinha
Mahidol University
Keywords: Agricultural and Biological Sciences;Immunology and Microbiology
Issue Date: 1-Jan-1993
Citation: Journal of Helminthology. Vol.67, No.4 (1993), 297-304
Abstract: Specific immunoreactive components present in crude somatic extract and in excretory-secretory (ES) products of Gnathostoma spinigerum advanced third-stage larvae (L3) were identified by Western blotting and their diagnostic potential evaluated by indirect ELISA. Although both crude antigen preparations were highly complex, the ES antigen gave a more satisfactory diagnostic result. Most G. spinigerum specific components present in the somatic and ES preparations had molecular weights below 29 kD and were not glycosylated, judging from the concanavalin A staining pattern. Specific diagnostic antigens were prepared by subjecting the crude preparations to SDS-PAGE. Low molecular weight components were identified and electroeluted from the gel. Excess SDS was removed by the use of an ion retardation resin. The antigens obtained by this relatively simple procedure were found to be highly specific for G. spinigerum. Sensitivity, specificity, and positive and negative predictive values for the assay using the fractionated somatic antigen were 100%. © 1993, Cambridge University Press. All rights reserved.
ISSN: 14752697
Appears in Collections:Scopus 1991-2000

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