Antibody response to experimental Trypanosoma rangeli infection and its implications for immunodiagnosis of South American trypanosomiasis.
Copyright policy )Antibody response to experimental Trypanosoma rangeli infection and its implications for immunodiagnosis of South American trypanosomiasis.
Differential immunodiagnosis of T. rangeli and T. cruzi infections in man poses a particular problem, not only because these parasites share antigenic determinants, as detected by immunofluorescence, but also because they have a similar geographical distribution, the same host range and often identical insect vectors. We show here that whereas mouse anti-T. rangeli sera have significant cross reactivity with T. cruzi by immunofluorescence, they are entirely specific when tested by ELISA, using apparently similar antigen preparations. Immunoprecipitation analysis detected relatively little cross-reactivity between heterologous antisera and parasite combinations. Intriguingly, immunization with T. rangeli epimastigotes was much more powerful than similar immunization with trypomastigotes, and the majority of the antibody was directed against a single polypeptide of apparent Mr 73kDa.
Trypanosoma, Trypanosoma cruzi, Fluorescent Antibody Technique, Antigens, Protozoan, Enzyme-Linked Immunosorbent Assay, Cross Reactions, Diagnosis, Differential, Mice, Antibody Formation, Animals, Chemical Precipitation, Chagas Disease, Peptides
Trypanosoma, Trypanosoma cruzi, Fluorescent Antibody Technique, Antigens, Protozoan, Enzyme-Linked Immunosorbent Assay, Cross Reactions, Diagnosis, Differential, Mice, Antibody Formation, Animals, Chemical Precipitation, Chagas Disease, Peptides
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