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The comparison of different ELISA procedures in detecting anti-Trichinella IgG in human infections

B Moskwa1, J Bien, W Cabaj

  • 1Witold Stefanski Institute of Parasitology of the Polish Academy of Sciences, Twarda Street 51/55, Warsaw, Poland. moskwa@twarda.pan.pl

Veterinary Parasitology
|December 6, 2008
PubMed

The aim of this study was to compare the performance of four different ELISA procedures in diagnosing Trichinella spp. infections in human outbreaks. The main differences between the various procedures were: antigen concentration, dilutions of human serum sample, the type of conjugate used, and time of conjugate incubation. Serum samples were collected from 23 individuals involved in an outbreak. Results obtained in the four tested ELISA procedures differed in the rate of positive results obtained for the examined outbreak. Western blot confirmed the ELISA-positive results. Reactions to the specific 41-45kDa and 55kDa bands were obtained with all positive sera.

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Enzyme-Linked Immunosorbent Assay

In 1971, Peter Perlman and Eva Engvall developed an Enzyme-linked immunosorbent assay (ELISA or EIA). ELISA differs from western blot in that the assays are conducted in microtiter plates or in vivo rather than on an absorbent membrane.
There are many different types of ELISAs, but they all involve an antibody molecule whose constant region binds an enzyme, leaving the variable region free to bind its specific antigen.  Enzyme-substrate reaction allows the antigen to be visualized or quantified.