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General principles of retrovirus immunodetection tests
1Infectious Disease Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10021.
Journal of the American Veterinary Medical Association
|November 25, 1991
Summary
Immunologic detection systems can identify retroviruses by detecting viral antigens or antibodies. Highly sensitive and specific assays like immunofluorescence and western blot analysis are crucial for diagnosing retroviral infections in humans and animals.
Area of Science:
- Immunology
- Virology
- Diagnostic Medicine
Background:
- Retroviruses possess unique antigenic determinants, enabling the development of specific immunologic detection systems.
- Immunodetection assays can identify retroviral antigens or antibodies in biological samples.
Purpose of the Study:
- To review the principles and applications of immunodetection systems for retroviral infections.
- To compare the sensitivity and specificity of various immunoassays used for retroviral diagnosis.
Main Methods:
- Review of immunodetection techniques including immunofluorescence, radioimmunoassay, immunoblot (western blot), ELISA, agglutination assays, virus isolation, and double immunodiffusion.
- Discussion of diagnostic principles: sensitivity, specificity, predictive values, and error rates.
Main Results:
- Immunofluorescence, radioimmunoassay, and immunoblot analysis are the most specific and sensitive assays.
- ELISA and agglutination assays offer good sensitivity but are less specific.
- Virus isolation and double immunodiffusion are highly specific but less sensitive.
Conclusions:
- Immunologic detection systems are vital for diagnosing retroviral infections, including feline leukemia virus (FeLV), feline immunodeficiency virus (FIV), human immunodeficiency virus (HIV), and human T-cell lymphotropic virus (HTLV).
- The choice of assay depends on the required balance between sensitivity and specificity for accurate retroviral diagnosis.