Publication: A simplified method for the fractionation of Gnathostoma-specific antigens for serodiagnosis of human gnathostomosis
Issued Date
1993-01-01
Resource Type
ISSN
14752697
0022149X
0022149X
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2-s2.0-0027813119
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of Helminthology. Vol.67, No.4 (1993), 297-304
Suggested Citation
Siriporn Tuntipopipat, Runglawan Chawengkirttikul, Stitaya Sirisinha A simplified method for the fractionation of Gnathostoma-specific antigens for serodiagnosis of human gnathostomosis. Journal of Helminthology. Vol.67, No.4 (1993), 297-304. doi:10.1017/S0022149X00013304 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/22521
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Title
A simplified method for the fractionation of Gnathostoma-specific antigens for serodiagnosis of human gnathostomosis
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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.