Dichotomy of the human T cell response to Leishmania antigens. II. Absent or Th2-like response to gp63 and Th1-like response to lipophosphoglycan-associated protein in cells from cured visceral leishmaniasis patients.
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| Abstract |
The T cell response to different Leishmania donovani antigens was investigated using peripheral blood mononuclear cells (PBMC) from Kenyans cured of visceral leishmaniasis and non-exposed Danes. Crude promastigote and amastigote antigens both induced proliferation and interferon-gamma (IFN-gamma) production in PBMC from cured patients, while cells from non-exposed donors gave weak responses. A similar pattern was induced by lipophosphoglycan-associated protein (LPGAP). By contrast, the major surface protease of Leishmania, gp63, induced only a weak proliferative response without IFN-gamma production in five of 17 samples from cured patients. Four of the five responding cultures produced IL-4, i.e. the response to this antigen was of the Th2 type. Furthermore, sera from acutely ill visceral leishmaniasis patients contained high levels of IgG antibodies to gp63. The Th2-like response to gp63 in patients cured of visceral leishmaniasis differs from the Th1-like response to the same antigen observed in patients cured of cutaneous leishmaniasis.
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| Authors | J A Kurtzhals, A S Hey, A Jardim, M Kemp, K U Schaefer, E O Odera, C B Christensen, J I Githure, R W Olafson, T G Theander |
| Journal | Clinical and experimental immunology (Clin Exp Immunol) Vol. 96 Issue 3 Pg. 416-21 (Jun 1994) ISSN: 0009-9104 [Print] England |
| PMID | 8004810 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't) |
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