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[Immunological screening of clonorchiasis]
Journal of the Formosan Medical Association = Taiwan Yi Zhi
|January 1, 1990
Summary
This study purified Clonorchis sinensis antigens for diagnostic tests. Enzyme-linked immunosorbent assay (ELISA) showed high sensitivity and specificity for detecting clonorchiasis, correlating with infection intensity.
Area of Science:
- Parasitology
- Immunology
- Biochemistry
Context:
- Clonorchiasis, caused by the parasitic fluke Clonorchis sinensis, is a significant public health concern in East Asia.
- Accurate diagnostic tools are crucial for effective disease management and control.
- Crude antigens from adult worms require purification for reliable serological assays.
Purpose:
- To purify antigens from adult Clonorchis sinensis worms.
- To evaluate the diagnostic performance of purified antigens using enzyme-linked immunosorbent assay (ELISA) and an intradermal test (IDT).
- To correlate antibody levels and test results with infection intensity.
Summary:
- Purified Clonorchis sinensis antigens were used in ELISA and IDT to detect clonorchiasis.
- ELISA demonstrated high sensitivity (92.8%) and specificity (89.0%) for detecting specific IgG, IgM, IgA, and IgE antibodies, correlating with infection intensity.
- IDT showed 100% specificity but lower sensitivity (49%), with positive reactions not correlating with infection intensity.
Impact:
- The purified antigen shows promise as a reliable diagnostic marker for clonorchiasis, particularly via ELISA.
- Understanding antibody profiles (IgG, IgA, total IgE) can aid in assessing infection burden.
- Potential cross-reactivity with other parasitic infections necessitates careful interpretation of ELISA results.