Premium
Stimulation of Histamine Receptors of Human Monocytoid and Hepatoma‐Derived Cell Lines and Mouse Hepatocytes Modulates the Production of the Complement Components C3, C4, Factor B, and C2
Author(s) -
FALUS A.,
WALCZ E.,
BROZIK M.,
ROKITA H.,
FUST G.,
HAJNAL A.,
MERETEY K.
Publication year - 1989
Publication title -
scandinavian journal of immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.934
H-Index - 88
eISSN - 1365-3083
pISSN - 0300-9475
DOI - 10.1111/j.1365-3083.1989.tb01207.x
Subject(s) - histamine , receptor , histamine receptor , stimulation , cell culture , biology , complement receptor , u937 cell , histamine h2 receptor , microbiology and biotechnology , in vitro , chemistry , medicine , endocrinology , immunology , complement system , biochemistry , antagonist , antibody , genetics
The influence of histamine (and the related agonists and antagonists) alone or in the presence of recombinant human interleukin 1α (IL‐1α) and gamma interferon (IFN‐γ) was studied on the production of complement components C3, C2, factor B, and C4 in vitro with human monocytoid cell line U937, hepatoma‐derived cell line HepG2, and mouse hepatocytes. Both U937 and HepG2 cells responded to histamine through H 1 and H 2 histamine receptors. The effect of histamine on the biosynthesis and gene expression of complement proteins was predominantly enhancing via the H 1 histamine receptors and inhibitory through the H 2 receptors. The actual predominance of the histamine receptor involved (and the outcome of the ligand interaction) seemed to be greatly affected by the simultaneous activation of the cells by IL‐1 or IFN‐γ.