Adrenergic Receptor
The adrenergic receptors (or adrenoceptors) are a class of G protein-coupled receptors that are targets of the catecholamines, especially norepinephrine (noradrenaline) and epinephrine (adrenaline). Epinephrine (adrenaline) reacts with both α- and β-adrenoreceptors, causing vasoconstriction and vasodilation, respectively. High levels of circulating epinephrine cause vasoconstriction. At lower levels of circulating epinephrine, β-adrenoreceptor stimulation dominates, producing vasodilation followed by decrease of peripheral vascular resistance.
Many cells possess these receptors, and the binding of a catecholamine to the receptor will generally stimulate the sympathetic nervous system. The sympathetic nervous system is responsible for the fight-or-flight response, which includes dilating the pupils, increasing heart rate, mobilizing energy, and diverting blood flow from non-essential organs to skeletal muscle.
-
TC 1698 dihydrochloride是α7选择性激动剂。
More
-
Tamsulosin hydrochloride是选择性α1A 拮抗剂。
More
-
SR 58611A hydrochloride是β3 激动剂， 显示抗焦虑，抗抑郁作用(anxiolytic，antidepressant activities)。
More
-
SR 59230A hydrochloride是活性的，选择性 β3 拮抗剂。
More
-
Spiroxatrine是活性的 α2C 拮抗剂。
More
-
TC 1698 dihydrochloride是α7选择性激动剂。
More
-
Tamsulosin hydrochloride是选择性α1A 拮抗剂。
More
-
SR 58611A hydrochloride是β3 激动剂， 显示抗焦虑，抗抑郁作用(anxiolytic，antidepressant activities)。
More
-
SR 59230A hydrochloride是活性的，选择性 β3 拮抗剂。
More
-
Spiroxatrine是活性的 α2C 拮抗剂。
More
