Histamine H2 Receptors
Histamine H2 receptors are Gαs-protein-coupled receptors involved in the suppressive activities of histamine. H2 receptors exhibit a widespread distribution and are found in the gastrointestinal tract, the central nervous system, smooth muscle cells, endothelial cells, cardiomyocytes and immune cells amongst others.
H2 receptors regulate various functions of histamine, including heart contraction, gastric acid secretion, cell proliferation and differentiation, and immune responses. In the immune system, H2 activation negatively regulates basophils and mast cells, and inhibits antibody synthesis, T cell production, cell-mediated cytolysis and cytokine production. H2 receptors are present on Th2 cells and activation increases the synthesis of cytokines such as IL-4, IL-5, IL-10 and IL-13. Furthermore, histamine-induced T cell suppressor activity is mediated through H2 receptors.
Due to their role in gastric acid secretion, H2 receptor overactivity is a cause of gastric ulcers, and pharmacological inhibition of these receptors is an effective treatment for this condition.
The human gene encoding the H2 receptor is localized to chromosome 5q35.3.View all products for Histamine H2 Receptors »
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Literature for Histamine H2 Receptors
A collection of over 450 products for G protein-coupled receptors, the listing includes research tools for the study of:
- Rhodopsin-like Receptors
- Secretin-like Receptors
- Glutamate Receptors
- Frizzled Receptors
- GPCR Signaling
This review provides a synopsis of the different histamine receptor subtypes and the ligands that act upon them. Compounds available from Tocris are listed.Download PDF | View all reviews
Written by Peter Barnes, this poster highlights key pathways in the development of asthma. Special focus is given to new therapies used to treat asthma, including those currently in clinical development; treatment pathways include lipid mediator inhibitors, cytokine modulators and mast cell-directed therapies. Compounds available from Tocris are listed.Request copy | View all posters