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. 1988 Dec;65(4):501–506.

Immunopathology of thrombocytopenia in experimental malaria.

G E Grau 1, P F Piguet 1, D Gretener 1, C Vesin 1, P H Lambert 1
PMCID: PMC1385556  PMID: 3065215

Abstract

An early thrombocytopenia was observed in CBA mice during acute infection with Plasmodium berghei. This was associated with an increase in bone marrow megakaryocytes and a reduction of normal syngeneic 111Indium-labelled platelet life span. Malaria-induced thrombocytopenia was thus considered to be the result of increased peripheral platelet destruction rather than central hypoproduction. The occurrence of thrombocytopenia was modulated by T-cell depletion. Indeed, thymectomized, irradiated or anti-CD4 monoclonal antibody-treated mice failed to develop thrombocytopenia, although they were infected to the same extent. Conversely, a significant thrombocytopenia was observed in thymectomized mice reconstituted with CD4+ T cells. During the course of infection, a significant inverse correlation was found between platelet counts and platelet-associated IgG. Normal mice passively transferred with serum from syngeneic malaria-infected mice developed thrombocytopenia. The possibility to raise monoclonal anti-platelet antibodies from P. berghei-infected animals further suggested a role for an antibody-mediated platelet destruction during acute murine malaria infection. These results indicate that in murine malaria, thrombocytopenia is mediated by immune mechanisms and that CD4+ T cells might be significantly involved.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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