Identification of a histamine release inhibitory factor (HRIF) and an inhibitor of histamine releasing factor synthesis (IHS) produced by guinea pig lymphoid cells. 1988

R Alam, and D M Lewis, and S A Olenchock
Immunology Section, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505.

Guinea pig spleen cells, thymocytes, and blood mononuclear cells have been shown to produce a histamine releasing factor (HRF) spontaneously or after stimulation with PHA or specific antigens. In this study we have shown that antigenic stimulation of spleen cells obtained from animals immunized with high doses of antigen suppresses the spontaneous HRF production. Likewise, stimulation with Con A of spleen cells also inhibits the spontaneous HRF production. When the supernatants from Con A- and antigen-stimulated cultures were added to fresh thymocyte cultures, a significant inhibition of HRF production was observed. These supernatants also inhibited HRF-induced histamine release from mast cells. We have identified an inhibitor of HRF synthesis (IHS) and also a histamine release inhibitory factor (HRIF) by gel chromatography. Virtually all mitogen- and antigen-stimulated culture supernatants elaborated the activities of HRF, IHS, and HRIF in various quantities depending on the dose of antigen and the kind of adjuvant used for immunization. IHS has a MW of 22K-35K and 10K. This cytokine also inhibits DNA synthesis by thymocytes. HRIF has a MW of 15K-20K and 10K. It inhibits both HRF- and antigen-induced histamine release from lung mast cells. These results suggest that lymphocytes produce a variety of factors which function to regulate histamine release from mast cells.

UI MeSH Term Description Entries
D008214 Lymphocytes White blood cells formed in the body's lymphoid tissue. The nucleus is round or ovoid with coarse, irregularly clumped chromatin while the cytoplasm is typically pale blue with azurophilic (if any) granules. Most lymphocytes can be classified as either T or B (with subpopulations of each), or NATURAL KILLER CELLS. Lymphoid Cells,Cell, Lymphoid,Cells, Lymphoid,Lymphocyte,Lymphoid Cell
D008222 Lymphokines Soluble protein factors generated by activated lymphocytes that affect other cells, primarily those involved in cellular immunity. Lymphocyte Mediators,Mediators, Lymphocyte
D008407 Mast Cells Granulated cells that are found in almost all tissues, most abundantly in the skin and the gastrointestinal tract. Like the BASOPHILS, mast cells contain large amounts of HISTAMINE and HEPARIN. Unlike basophils, mast cells normally remain in the tissues and do not circulate in the blood. Mast cells, derived from the bone marrow stem cells, are regulated by the STEM CELL FACTOR. Basophils, Tissue,Basophil, Tissue,Cell, Mast,Cells, Mast,Mast Cell,Tissue Basophil,Tissue Basophils
D008970 Molecular Weight The sum of the weight of all the atoms in a molecule. Molecular Weights,Weight, Molecular,Weights, Molecular
D010047 Ovalbumin An albumin obtained from the white of eggs. It is a member of the serpin superfamily. Serpin B14
D002845 Chromatography Techniques used to separate mixtures of substances based on differences in the relative affinities of the substances for mobile and stationary phases. A mobile phase (fluid or gas) passes through a column containing a stationary phase of porous solid or liquid coated on a solid support. Usage is both analytical for small amounts and preparative for bulk amounts. Chromatographies
D003208 Concanavalin A A MANNOSE/GLUCOSE binding lectin isolated from the jack bean (Canavalia ensiformis). It is a potent mitogen used to stimulate cell proliferation in lymphocytes, primarily T-lymphocyte, cultures.
D004306 Dose-Response Relationship, Immunologic A specific immune response elicited by a specific dose of an immunologically active substance or cell in an organism, tissue, or cell. Immunologic Dose-Response Relationship,Relationship, Immunologic Dose-Response,Dose Response Relationship, Immunologic,Dose-Response Relationships, Immunologic,Immunologic Dose Response Relationship,Immunologic Dose-Response Relationships,Relationship, Immunologic Dose Response,Relationships, Immunologic Dose-Response
D006168 Guinea Pigs A common name used for the genus Cavia. The most common species is Cavia porcellus which is the domesticated guinea pig used for pets and biomedical research. Cavia,Cavia porcellus,Guinea Pig,Pig, Guinea,Pigs, Guinea
D006636 Histamine Release The secretion of histamine from mast cell and basophil granules by exocytosis. This can be initiated by a number of factors, all of which involve binding of IgE, cross-linked by antigen, to the mast cell or basophil's Fc receptors. Once released, histamine binds to a number of different target cell receptors and exerts a wide variety of effects. Histamine Liberation,Histamine Liberations,Histamine Releases

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