Abstract
CD4+ T cells play a major role in protective immunity against the blood stage of malaria, but the mechanism of protection is unclear. By adoptive transfer of cloned T cell lines, direct evidence is provided that both TH1 and TH2 subsets of CD4+ T cells can protect mice against Plasmodium chabaudi chabaudi infection. TH1 cells protect by a nitric oxide-dependent mechanism, whereas TH2 cells protect by the enhancement and accelerated production of specific immunoglobulin G1 antibody.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Antibodies, Protozoan / biosynthesis
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Arginine / analogs & derivatives
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Arginine / pharmacology
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CD4-Positive T-Lymphocytes / immunology*
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Cell Line
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Female
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Immunoglobulin G / biosynthesis*
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Lymphocyte Depletion
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Malaria / immunology*
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Mice
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Mice, Inbred Strains
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Nitrates / blood
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Nitric Oxide / metabolism*
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Plasmodium chabaudi / immunology*
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T-Lymphocyte Subsets / immunology*
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omega-N-Methylarginine
Substances
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Antibodies, Protozoan
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Immunoglobulin G
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Nitrates
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omega-N-Methylarginine
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Nitric Oxide
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Arginine