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In Wikidata. Alpha-adrenergic agonists are a class of sympathomimetic agents that selectively stimulates alpha adrenergic receptors. 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.
As of 2018, prazosin is the only alpha-1 blocker known to act as an inverse agonist at all alpha-1 adrenergic receptor subtypes; [3] [4] whereas tamsulosin is a selective antagonist for all alpha-1 subtypes. [3] [5] Drugs that act as selective antagonists at specific alpha-1 adrenergic receptor subtypes have also been developed.
Rotigotine. SB-269,970. Setiptiline. Spiroxatrine. Sunepitron. Tolazoline. Yohimbine. Many atypical antipsychotics and azapirones like buspirone and gepirone (via metabolite pyrimidinylpiperazine) antagonize α 2 -adrenergic receptors as well.
Alpha-blockers, also known as α-blockers or α-adrenoreceptor antagonists, are a class of pharmacological agents that act as antagonists on α-adrenergic receptors (α-adrenoceptors). [2] Historically, alpha-blockers were used as a tool for pharmacologic research to develop a greater understanding of the autonomic nervous system.
Alpha-1 adrenergic receptor. alpha-1 (α1) adrenergic receptors are G protein-coupled receptors (GPCRs) associated with the G q heterotrimeric G protein. α 1 -adrenergic receptors are subdivided into three highly homologous subtypes, i.e., α 1A -, α 1B -, and α 1D -adrenergic receptor subtypes. There is no α 1C receptor.
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.
An adrenergic antagonist is a drug that inhibits the function of adrenergic receptors. There are five adrenergic receptors, which are divided into two groups. The first group of receptors are the beta (β) adrenergic receptors. There are β 1, β 2, and β 3 receptors. The second group contains the alpha (α) adrenoreceptors.
Adrenergic blocking agent. Adrenergic blocking agents are a class of drugs that exhibit its pharmacological action through inhibiting the action of the sympathetic nervous system [1] in the body. The sympathetic nervous system (SNS) is an autonomic nervous system that we cannot control by will. It triggers a series of responses after the body ...