Alpha-adrenergic agonist

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An adrenergic alpha-agonist is a drug which selectively stimulates alpha adrenergic receptors. The alpha-adrenergic receptor has two subclasses α₁ and α₂. Although complete selectivity between receptor agonism is rarely achieved, phenylephrine is an α₁ agonist, while clonidine and methyldopa are α₂ partial agonists ^[1].

An example is xylazine.

Alpha-adrenergic agonists are used in the treatment of glaucoma by decreasing the production of aqueous fluid by the ciliary bodies of the eye.

[edit] External links

• MeSH Adrenergic+alpha-Agonists
• MeSH list of agents 82000316

v • d • e Receptor agonists, antagonists, and reuptake inhibitors BA/M: 5-HT (serotonin) receptor Serotonin receptor agonist • Serotonin antagonist (5-HT3) • Serotonin uptake inhibitor (SSRI) BA/M: Dopamine receptor Dopamine agonist • Dopamine antagonist • Dopamine reuptake inhibitor BA/M: Adrenergic receptor Adrenergic agonist (Alpha, Beta2) • Adrenergic antagonist (Alpha, Beta) • Adrenergic uptake inhibitor BA/M: Histamine receptor Histamine agonist • Histamine antagonist (H1, H2) Acetylcholine receptor Cholinergic (Muscarinic, Nicotinic) • Anticholinergic (Muscarinic, Nicotinic) • Acetylcholinesterase inhibitor AA: GABA receptor GABA agonist • GABA antagonist AA: Glutamate receptor NMDA receptor (NMDA receptor antagonist)