ArticleMolecular and cellular biochemistry2003
Immune complex antigens as a tool in serodiagnosis of kala-azar.
Article in Molecular and cellular biochemistry, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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2 citing papers in PubMed, 10 citations in OpenAlex.
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3 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
The 63 kDa surface antigen of Leishmania promastigotes is one of the most important virulent factors in establishing the host parasite relationship. This glycoprotein is revealed by surface iodination study as well as by metabolic labeling and immunoblot methods. In search of this specific antigen for serodiagnosis, immune complexes (ICs) were isolated from kala-azar patient sera and analysed by SDS-PAGE and Western immunoblotting. The immunoblot of kala-azar IC with patient sera, anti-promastigote sera and anti gp63 sera detected the major antigen of 55 kDa. This recognition suggests that 55 kDa antigen and gp63 have common antigenic epitope(s). Normal IC did not react with anti gp63 sera indicating absence of this antigen in normal IC. To confirm the parasitic origin of the 55 kDa antigen of kala-azar IC, in vitro IC was formed with parasite antigen and acid dissociated kala-azar IC antibody. This indicated the antigenic similarity of the 55 kDa antigen and gp63 antigen of the parasite. This also suggested that the former antigen may have been processed from gp63. In summary, identification of parasite antigen (55 kDa) in IC of kala-azar patients' sera may be useful in developing a serodiagnostic assay of visceral leishmaniasis. Several other antigens are visualized in kala-azar IC when developed with patient sera. But specificity and efficacy of these antigens have not yet been evaluated in serodiagnosis of the disease.
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