Parasitology Research

, Volume 78, Issue 2, pp 112–119 | Cite as

Identification of diagnostic antigens fromTrichinella spiralis

  • Wieger L. Homan
  • Anja C. G. Derksen
  • Frans van Knapen
Original Investigations

Abstract

The Western blotting technique was used to determine the antigens ofTrichinella spiralis muscle larvae that were recognized by antibodies in sera from humans and pigs displayingT. spiralis infections. This resulted in the identification of several antigens that were recognized by all sera. Some of these antigens, notably those that were recognized during the early stage of infection, cross-reacted with antibodies to other parasites. This cross-reactivity was caused by the presence of phosphorylcholine on these antigens. A large portion of the antigens that were recognized by antibodies from infected humans and pigs were found to share a singleTrichinella-specific determinant. TheTrichinella-specific antigen population could be isolated from phosphorylcholine-containing antigens by a simple two-step affinity chromatography procedure using monoclonal antibodies to both determinants. The resulting preparation consisted primarily of a single antigen showing an apparent molecular weight of 45 kDa that corresponded to a mamor constituent of excretory-secretory (ES) products of muscle larvae. When tested in an enzyme-linked immunosorbent assay (ELISA), this antigen displayed diagnostic specificity that was comparable with the ES fraction and diagnostic sensitivity comparable with the crude muscle-larvae extract.

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Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • Wieger L. Homan
    • 1
  • Anja C. G. Derksen
    • 1
  • Frans van Knapen
    • 1
  1. 1.Laboratory of Parasitology and MycologyNational Institute of Public Health and Environmental ProtectionBilthovenThe Netherlands

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