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  • Title: Histamine enhances granulocyte-macrophage colony-stimulating factor and interleukin-6 production by human peripheral blood mononuclear cells.
    Author: Mor S, Nagler A, Barak V, Handzel ZT, Geller-Bernstein C, Fabian I.
    Journal: J Leukoc Biol; 1995 Oct; 58(4):445-50. PubMed ID: 7561521.
    Abstract:
    The effect of histamine on the production of cytokines by subpopulations of mononuclear cells was studied. A 3.5-fold increase in the number of myeloid colony-forming units (CFU-C) was observed when bone marrow cells were cultured in the presence of conditioned medium prepared from nonadherent mononuclear cells cultured with 10(-4) M histamine (CM-histamine) compared with phosphate-buffered saline (CM-PBS). Using ELISA and radioimmunoassay kits, histamine was found to enhance the production of GM-CSF (9.6-fold) and IL-6 (8.2-fold) by mononuclear cells but not by nonadherent cells or large granular lymphocytes. Anti-GM-CSF and anti-IL-6 antibodies markedly blocked cytokine activity in CM-PBS, whereas the blocking effect in CM-histamine was moderate, indicating enhanced GM-CSF and IL-6 activity in CM-histamine. No GM-CSF or IL-6 levels could be detected in CM-histamine or CM-PBS prepared from CD3+, CD4+, or CD8+ lymphocytes. Preincubation of CM-histamine with H1 and H2 receptor antagonists resulted in complete blocking of the histamine-enhanced colony-stimulating activity. We conclude that histamine is able to activate human mononuclear cells to generate cytokines such as GM-CSF and IL-6 via H1 and H2 receptors.
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