cardiac action potential duration

Oxypeucedanin ((+-)-Oxypeucedanin) 是呋喃香豆素衍生物，分离自Angelica dahurica。它是选择性开放通道阻滞剂，可抑制hKv1.5通道电流，IC50值为 76 nM。它延长心脏动作电位持续时间，是潜在的抗心律失常试剂。它通过抑制癌细胞迁移来诱导细胞凋亡。

Dofetilide (UK 68789) 是一种具有口服活性、有效的且特异性的IKr 阻滞剂，作为 III 类抗心律失常药物。Dofetilide 可用于心血管疾病研究。

Butoprozine 具有多重心脏电生理效应：它延长了动作电位时长，类似于 amiodarone 的效果；抑制了平台期，与 verapamil 的作用相似；并降低了振幅与最大去极化速率。

Uridine triphosphate (UTP) 是一种潜在用于治疗肺癌的嘌呤核苷酸P2U受体激动剂。它通过激活P2Y2受体增加人类癌变胰管上皮细胞的增殖。此外，Uridine triphosphate (UTP) 通过激活P2Y2受体，在心脏成纤维细胞中诱导纤维化反应。同时，UTP通过P2Y2嘌呤受体延长豚鼠乳头肌的动作电位时长。

BBR 2160 is a dihydropyridine derivative belonging to the group of the so-called tiampidine. BBR 2160 has calcium-antagonistic properties in cardiac tissue. Intracellular microelectrodes have been used to characterize the electrophysiological properties o

Carsatrin succinate is the salt form of Carsatin, a purinylpiperazine derivative used as a cardiotonic and antiarrhythmic. Carsatrin acts as positive inotropic agent that increases twitch tension and prolongs the action potential (AP) duration of ventricular muscle without affecting the Na+, K+-ATPase, adenylyl cyclase, phosphodiesterase isozymes, or cardiac myofilaments. Carsatrin’s positive inotropic effect can be prevented by tetrodotoxin but not by the adrenergic antagonists timolol, yohimbine, or prazosin.

Carsatrin is purinylpiperazine derivative. as cardiotonic and antiarrhythmic. Carsatrin acts as positive inotropic agent that increases twitch tension and prolongs the action potential (AP) duration of ventricular muscle without affecting the Na+, K+-ATPase, adenylyl cyclase, phosphodiesterase isozymes, or cardiac myofilaments. Carsatrin’s positive inotropic effect can be prevented by tetrodotoxin but not by the adrenergic antagonists timolol, yohimbine, or prazosin

E-4031是甲磺酰苯胺III 类抗心律失常药，选择性地阻断hERG 钾通道。