Evaluation of enzyme-linked immunosorbent assay for diagnosis of post-kala-azar dermal leishmaniasis with crude or recombinant k39 antigen.

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TitleEvaluation of enzyme-linked immunosorbent assay for diagnosis of post-kala-azar dermal leishmaniasis with crude or recombinant k39 antigen.
Publication TypeJournal Article
AuthorsSalotra P, Sreenivas G, Nasim AA, Subba Raju BV, Ramesh V
Abbrev. JournalClin. Diagn. Lab. Immunol.
JournalClinical and diagnostic laboratory immunology
Year of Publication2002
Volume9
Issue2
Pagination370-3
Publication Languageeng
KeywordsAnimals, Antibodies, Protozoan, Antigens, Protozoan, Enzyme-Linked Immunosorbent Assay, Evaluation Studies as Topic, Humans, Leishmania donovani, Leishmaniasis, Visceral, Protozoan Proteins, Sensitivity and Specificity
Abstract

The diagnosis of post-kala-azar dermal leishmaniasis (PKDL), a dermatosis that provides the only known reservoir for the parasite Leishmania donovani in India, remains a problem. Timely recognition and treatment of PKDL would contribute significantly to the control of kala-azar. We evaluated here the potential of the enzyme-linked immunosorbent assay (ELISA) as a diagnostic tool for PKDL. Antigen prepared from promastigotes and axenic amastigotes with parasite isolates that were derived from skin lesions of a PKDL patient gave sensitivities of 86.36 and 92%, respectively, in the 88 PKDL cases examined. The specificity of the ELISA test was examined by testing groups of patients with other skin disorders (leprosy and vitiligo) or coendemic infections (malaria and tuberculosis), as well as healthy controls from areas where this disease is endemic or is not endemic. A false-positive reaction was obtained in 14 of 144 (9.8%) of the controls with the promastigote antigen and in 14 of 145 (9.7%) of the controls with the amastigote antigen. Evaluation of the serodiagnostic potential of recombinant k39 by ELISA revealed a higher sensitivity (94.5%) and specificity (93.7%) compared to the other two antigens used. The data demonstrate that ELISA with crude or recombinant antigen k39 provides a relatively simple and less-invasive test for the reliable diagnosis of PKDL.

PubMed URL

http://www.ncbi.nlm.nih.gov/pubmed/11874880?dopt=Abstract

DOI10.1128/cdli.9.2.370-373.2002
Link to full texthttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC119938/pdf/0187.pdf
PubMed Central IDPMC119938

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