Development of monoclonal antibody based antigen capture ELISA to detect chikungunya virus antigen in mosquitoes
Autor(es): Hundekar S L, Thakare J P, Gokhale M D, Barde P V, Argade S V, Mourya D T
Resumo: Chikungunya (CHIK) virus has caused numerous large outbreaks in India. No active or passive surveillance has been carried out since the last epidemic which occurred in 1971. For active surveillance, it is necessary to have a test, which can detect the virus from a large number of field-collected mosquitoes. The present study describes the st-ardization of monoclonal antibody (MAb) based antigen capture ELISA to detect chikungunya virus antigen from the mosquitoes. CHIK virus antigen from suspension of experimentally infected mosquitoes - their progeny was captured on mouse polyclonal antibody, while biotinylated CHIK Mab was used as a probing antibody. CHIK virus antigen in the head squashes of virus inoculated mosquitoes was detected using indirect immunofluorescence antibody (IFA) test for confirmation of ELISA results. The ELISA test was sensitive enough to detect antigen even if a small fraction of a single infected mosquito homogenate was incorporated in the test. The IFA test failed to detect CHIK antigen in 10 - 25 microliters of suspension whereas with ELISA it was detected in all the samples. Progeny of Aedes aegypti - Ae. albopictus mosquitoes infected with chikungunya virus did not show the possibility of existence of transovarial transmission. This test is rapid - simple since it can be completed in two days as compared to the conventional mosquito inoculation - IFA techniques, which require at least 10 days. There is an additional advantage with this test that a large number of samples can be processed, - the remaining homogenate of the mosquitoes can be used for screening other viruses. Experimental data raised using this test showed that transovarial transmission of this virus does not occur in these vector species.
Imprenta: The Indian Journal of Medical Research, v. 115, p. 144-148, 2002
Descritores: Chikungunya virus - Pathogenesis ; Chikungunya virus - Proteins ; Chikungunya virus - Antibodies ; Chikungunya Virus - Virus ; Chikungunya virus - Transmission ; Chikungunya virus - Epidemic ; Chikungunya virus - Immunology
Data de publicação: 2002
