Histamine inhibits interferon-gamma production via suppression of interleukin 2 synthesis.
Histamine, a modulator of various immune functions, inhibits the production of interleukin 2 (IL-2) and interferon-gamma (IFN-gamma) by polyclonally activated human blood mononuclear cells. The histamine-induced inhibition of IFN-gamma synthesis can be completely eliminated by the addition of recombinant IL-2. The IFN-gamma synthesis by T8+ lymphocytes is highly dependent on IL-2 supplied either by the IL-2 producing T4+ lymphocytes or through exogenous addition of recombinant IL-2. It is concluded that histamine acts primarily on the interleukin 2 synthesis by the T4+ lymphocytes and as a consequence of this inhibition, interferon-gamma production is reduced.
D006632:Histamine / Q000494:pharmacology*; D006801:Humans; D007371:Interferon-gamma / Q000096:biosynthesis*; D007376:Interleukin-2 / Q000096:biosynthesis* / Q000494:pharmacology; D011971:Receptors, Immunologic / Q000378:metabolism; D015375:Receptors, Interleukin-2; D011994:Recombinant Proteins / Q000494:pharmacology; D013601:T-Lymphocytes / Q000187:drug effects* / Q000378:metabolism; D006377:T-Lymphocytes, Helper-Inducer / Q000187:drug effects / Q000378:metabolism
D007376:Interleukin-2; D011971:Receptors, Immunologic; D015375:Receptors, Interleukin-2; D011994:Recombinant Proteins; D006632:Histamine; D007371:Interferon-gamma