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Evaluation of a 200-kDa amastigote-specific antigen of L. donovani by enzyme-linked immunosorbent assay (ELISA) for the diagnosis of visceral leishmaniasis

By Pankaj Kaul, N. Malla, Sukhbir Kaur, R. C. Mahajan and N. K. Ganguly

Abstract

A purified 200-kDa antigenic fraction from Leishmania donovani axenic amastigotes was evaluated by ELISA for the detection of antibody response in visceral leishmaniasis (VL) patients, post kala-azar dermal leishmaniasis (PKDL) patients and controls, for the diagnosis of visceral leishmaniasis. A positive antibody response to the 200-kDa amastigote fraction and to Leishmania amastigote soluble antigen (LASA) was found in 29 (96.6%) and 30 (100%) confirmed VL patients, respectively, by the use of ELISA. However, only 1 (10%) out of 10 PKDL patients had detectable antibody response to 200-kDa fraction while all the 10 (100%) PKDL patients exhibited an immune response to LASA. Therefore, use of the 200-kDa antigenic fraction for the detection of antibody response in an ELISA follow-up (post treatment) of VL patients may have prognostic significance, and it may also be useful for differentiating active VL and PKDL

Topics: R Medicine
Publisher: Royal Society of Tropical Medicine and Hygiene
Year: 2000
OAI identifier: oai:repository.ias.ac.in:12140
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