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一些作者指出,某些拟交感神经药物和解交感神经胺对心脏的变时性(Chronotro-pic)和正性收缩能性(Inotropic)作用有量上的显著差别,提示心脏中的β_1-受体可能并不是均一的。但是,这些结果大多数来自完整动物。本文用豚鼠离体自律心房和电起搏心房肌条,研究各种β-肾上腺素能激动剂和拮抗剂对心脏的变时性和正性收缩能性作用及其构效关系。
Some authors note that some sympathetic drugs and sympathomimetic amines have a statistically significant difference in the chronotro-pic and inotropic effects of heart, suggesting that the beta 1 -receptor in the heart may be Not uniform. However, most of these results come from whole animals. In this paper, guinea pig with self-paced atrial and ventricular pacing atrial stripping, a variety of β-adrenergic agonists and antagonists on the heart of the chronotropic and positive systolic sexual function and structure-activity relationship.