alpha receptor


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Related to alpha receptor: beta receptor

alpha receptor

[¦al·fə ri¦sep·tər]
(cell and molecular biology)
Any of a group of receptors on cell membranes that are thought to be associated with vasoconstriction, relaxation of intestinal muscle, and contraction of the nictitating membrane, iris dilator muscle, smooth muscle of the spleen, and muscular layer of the uterine wall. Also called alpha-adrenergic receptor.
References in periodicals archive ?
This link doesn't surprise Gustafsson--the beta receptor responds to phytoestrogens much more potently than the alpha receptor does.
When estrogen binds to an alpha receptor, it usually signals the cell to start copying itself.
Metabasis believes that the combination of a TRb-selective receptor agonist and liver-targeting could harness the efficacy of the approach by avoiding extra-hepatic activation of TR alpha receptors and TRb receptors that may lead to these therapy-limiting side effects.
Alpha receptors trigger the cells to constrict coronary arteries, and the beta receptors have an opposing effect.
The researchers then collected blood samples and determined the density of alpha receptors on platelets, which are essential for blood coagulation, and the density of beta receptors on lymphocytes, a type of white blood cell.