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  2. Alpha-adrenergic agonist - Wikipedia

    en.wikipedia.org/wiki/Alpha-adrenergic_agonist

    The alpha-adrenergic receptor has two subclasses α 1 and α 2. Alpha 2 receptors are associated with sympatholytic properties. Alpha-adrenergic agonists have the opposite function of alpha blockers. Alpha adrenoreceptor ligands mimic the action of epinephrine and norepinephrine signaling in the heart, smooth muscle and central nervous system, with

  3. Alpha-2 adrenergic receptor - Wikipedia

    en.wikipedia.org/wiki/Alpha-2_adrenergic_receptor

    The alpha-22) adrenergic receptor (or adrenoceptor) is a G protein-coupled receptor (GPCR) associated with the G i heterotrimeric G-protein. It consists of three highly homologous subtypes, including α 2A-, α 2B-, and α 2C-adrenergic. Some species other than humans express a fourth α 2D-adrenergic receptor as well. [1]

  4. Adrenergic receptor - Wikipedia

    en.wikipedia.org/wiki/Adrenergic_receptor

    The adrenergic receptors or adrenoceptors are a class of G protein-coupled receptors that are targets of many catecholamines like norepinephrine (noradrenaline) and epinephrine (adrenaline) produced by the body, but also many medications like beta blockers, beta-22) antagonists and alpha-22) agonists, which are used to treat high ...

  5. Adrenergic agonist - Wikipedia

    en.wikipedia.org/wiki/Adrenergic_agonist

    An adrenergic agonist is a drug that stimulates a response from the adrenergic receptors. The five main categories of adrenergic receptors are: α 1, α 2, β 1, β 2, and β 3, although there are more subtypes, and agonists vary in specificity between these receptors, and may be classified respectively. However, there are also other mechanisms ...

  6. Alpha-2 blocker - Wikipedia

    en.wikipedia.org/wiki/Alpha-2_blocker

    The tetracyclic antidepressants mianserin and mirtazapine are α 2 blockers, although their efficacy as antidepressants may come from their activity at other receptor sites. [citation needed] Mechanistically, α 2 blockers increase adrenergic, dopaminergic and serotonergic neurotransmitters and induce insulin secretion, decreasing blood sugar ...

  7. Adrenergic blocking agent - Wikipedia

    en.wikipedia.org/wiki/Adrenergic_blocking_agent

    The alpha-2 blocker acts on alpha-2 receptors. The alpha-2 receptor is a G-protein coupled receptor as well, which exert its action by Gi function, leading to an inhibition of adenylyl cyclase and thus reducing synthesis of cAMP. [3] It lowers the amount of calcium inside the cell. [3]

  8. Xylazine - Wikipedia

    en.wikipedia.org/wiki/Xylazine

    [23] [3] When xylazine and other α 2-adrenergic receptor agonists are administered, they distribute throughout the body within 30 to 40 minutes. [17] Due to xylazine's highly lipophilic nature, it directly stimulates central α 2 -adrenergic receptors as well as peripheral α-adrenergic receptors in a variety of tissues.

  9. Clonidine - Wikipedia

    en.wikipedia.org/wiki/Clonidine

    Clonidine, sold under the brand name Catapres among others, is an α 2A-adrenergic receptor agonist [12] medication used to treat high blood pressure, ADHD, drug withdrawal (e.g., alcohol, opioids, or nicotine), menopausal flushing, diarrhea, spasticity, and certain pain conditions. [13]