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Pindolol

吲哚洛爾
Mechanism of action:
Pindolol 是一種非選擇性 β-腎上腺素受體阻斷劑(non-selective β-adrenergic blocker)。Pindolol 能阻斷心肌細胞的 β₁ 受體,抑制 Gs 蛋白的活化,使 cAMP 下降,細胞質的鈣離子減少,降低心肌收縮力,使血壓下降。Pindolol 也能阻斷支氣管與週邊血管平滑肌的 β₂ 受體,同樣抑制 Gs 蛋白的活化,使 cAMP 下降,削弱平滑肌的鬆弛作用,可能導致支氣管收縮及週邊血管阻力上升。
Reference(s):
1. Blumenfeld JD et al. (1999). Beta-adrenergic receptor blockade as a therapeutic approach for suppressing the renin-angiotensin-aldosterone system in normotensive and hypertensive subjects. Am J Hypertens.
2. Clark BJ et al. (1982). Pindolol--the pharmacology of a partial agonist. Br J Clin Pharmacol.
3. Ferguson SS et al. (2014). beta-adrenoceptors as molecular targets in the treatment of hypertension. Can J Cardiol.
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