Reatividade de "tripanosomatídeos inferiores": B. culicis, C. deanei, C. fasciculata, C. luciliae, H. samuelpessoai, L. seymouri, P. serpens e W. inconstans com anticorpos de hospedeiros humanos e cães infectados com Leishmania sp. e T. cruzi. / Reactivity of "lower trypanosomatids" : B. culicis, C. deanei, C. fasciculata, C. luciliae, H. samuelpessoai, L. seymouri, P. serpens and W. inconstans with anti-Leishmania sp. and anti-T. cruzi antibodies from human and canine hosts.
AUTOR(ES)
Leandro Rodrigues Ferreira
DATA DE PUBLICAÇÃO
2010
RESUMO
"Lower trypanosomatids", that infect plant and insect, present biochemical and molecular similarities to Leishmania sp. and Trypanosoma cruzi. Antigenic similarities between those parasites are known for a long time, but only few comparative investigations about immune humoral cross-reaction were described. In the current work we analyze the cross-immunoreactivity of crude extract from eight lower trypanosomatids by ELISA, with human and dog host samples infected with T. cruzi and Leishmania sp. ELISA positivity and data of mean title of human or dog visceral leishmaniasis cases, the lower trypanosomatids were divided in two groups. ELISA-G1 comprised by 4 parasites resulted in 100% positivity and high mean of absorbance, similar data to those obtained with L. chagasi, with human or dog hosts. In human cases, Chagas disease chronic cases showed 100% positive only with ELISA performed with T. cruzi, with no differences among lower trypanosomatids. Otherwise samples with other non correlated disease presented low cross-reaction with lower trypanososmatids. In spite of, their taxonomic position in various sections and their old divergence these results showed a strong antigenic similarity between pathogenic and lower trypanosomatids, and could be an alternative source of antigen for the detection of antibodies against host mainly with visceral leishmaniasis cases.
ASSUNTO(S)
trypanosoma cruzi trypanosoma cruzi animal trypanosomiasis antibodies anticorpos cross-reactivity imunologia veterinária imunorreatividade cruzada leishmaniasis animal leishmanioses animal lower trypanosomatids tripanosomatídeos inferiores tripanossomose animal veterinary immunology leishmania sp. leishmania sp.
