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Costa,F.; Pereira-Chioccola,V.L.; Ribeirão,M.; Schenkman,S.; Rodrigues,M.M.. |
Trypanosoma cruzi, the protozoan parasite that causes Chagas' disease, does not synthesize sialic acid, but expresses a trans-sialidase (TS) that catalyzes the transfer of sialic acid from host glycoconjugates to the parasite surface. Here, we review studies that characterize the immune response to the catalytic domain of the enzyme in humans during Chagas' disease or in mice following immunization with the TS gene. In both cases, there are antibodies that strongly inhibit the enzymatic activity and generation of interferon-<FONT FACE="Symbol">g</FONT>-producing T cells. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DNA vaccination; Trans-sialidase; Chagas' disease. |
Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000200013 |
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Soares,I.S.; Rodrigues,M.M.. |
Malaria remains the most prevalent and devastating parasitic disease worldwide. Vaccination is considered to be an approach that will complement other strategies for prevention and control of the disease in the future. In the last 10 years, intense studies aimed at the development of a malaria vaccine have provided important knowledge of the nature of the host immunological mechanisms of protection and their respective target antigens. It became well established that protective immune responses can be generated against the distinct stages of Plasmodium. However, in general, protective immune responses are directed at stage-specific antigens. The elucidation of the primary structure of these antigens made possible the generation of synthetic and recombinant... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Malaria; Plasmodium; Vaccine; Immunity; Infectious disease. |
Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000300002 |
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