Abstract |
The aim of the present study was to analyse Taenia solium metacestode antigens that were derived from the unbound fraction of jacalin affinity chromatography and subsequent tert-octylphenoxy poly (oxyethylene) ethanol Triton X-114 (TX-114) partitioning in the diagnosis of human neurocysticercosis (NCC). Immunoassays were designed to detect T. solium-specific IgG antibodies by ELISA and immunoblot. Serum samples were collected from 132 individuals who were categorised as follows: 40 had NCC, 62 presented Taenia spp or other parasitic diseases and 30 were healthy individuals. The jacalin-unbound (J unbound ) fraction presented higher sensitivity and specificity rates than the jacalin-bound fraction and only this fraction was subjected to subsequent TX-114 partitioning, resulting in detergent (DJ unbound ) and aqueous (AJ unbound ) fractions. The ELISA sensitivity and specificity were 85% and 84.8% for J unbound , 92.5% and 93.5% for DJ unbound and 82.5% and 82.6% for AJ unbound . By immunoblot, the DJ unbound fraction showed 100% sensitivity and specificity and only serum samples from patients with NCC recognised the 50-70 kDa T. solium-specific components. We conclude that the DJ unbound fraction can serve as a useful tool for the differential immunodiagnosis of NCC by immunoblot.
|
Authors | Gleyce Alves Machado, Heliana Batista de Oliveira, Margareth Leitão Gennari-Cardoso, José Roberto Mineo, Julia Maria Costa-Cruz |
Journal | Memorias do Instituto Oswaldo Cruz
(Mem Inst Oswaldo Cruz)
Vol. 108
Issue 3
(May 2013)
ISSN: 1678-8060 [Electronic] Brazil |
PMID | 23778661
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
|
Chemical References |
- Antibodies, Helminth
- Antigens, Helminth
|
Topics |
- Animals
- Antibodies, Helminth
(blood)
- Antigens, Helminth
(immunology)
- Case-Control Studies
- Chromatography, Affinity
- Enzyme-Linked Immunosorbent Assay
- Humans
- Immunoblotting
- Immunologic Tests
(methods)
- Neurocysticercosis
(diagnosis, immunology)
- Sensitivity and Specificity
- Taenia solium
(immunology)
|