首都医科大学学报 ›› 1989, Vol. 10 ›› Issue (2): 106-111.

• 论著 • 上一篇    下一篇

在豚鼠离体心房肌标本中酚妥拉明等对腺苷作用的拮抗

徐江1,2, 韩大英2   

  1. 1. 首都医学院病理生理教研室;2. 首都医学院生理学教研室
  • 收稿日期:1988-10-15 修回日期:1900-01-01 出版日期:1989-04-15 发布日期:1989-04-15

The Antagonism of Phentolamine Propranolol to A denosine on Atrium Muscle of Guinea Pig in Vitro

Xu jiang1,2, Han Daying2   

  1. Department of Physiology, Capital institute of Medicine
  • Received:1988-10-15 Revised:1900-01-01 Online:1989-04-15 Published:1989-04-15

摘要: 采用微电极技术,观察了不同温度条件下不同浓度腺苷对豚鼠心房肌动作电位的影响,研究了在21℃时,肾上腺能受体阻断剂酚妥拉明、酚苄明及心得安对腺苷作用的影响。结果表明:腺苷对心房肌动作电位的作用对浓度、温度有依赖性。心得安部分而酚妥拉明及酚苄明完全地阻断腺苷的作用。推测腺苷与儿茶酚胺共同细胞膜受体而各自发挥它们的不同作用。

关键词: 腺苷, 动作电位, 儿茶酚胺受体, 酚妥拉明, 酚芐明, 心得安

Abstract: The effects of adenosine on action potential of guinea pig atrium at different concentrations and temperatures were observed with microelectrode technique, At 21℃, the effects of adrenargic receptors blockers as phenoxybenzamine phentolamine and propranolol on adenosine etion were researched. hTe results suggest that the effects of adenosine aon action potential of at rium muscle is concentration and temperature-dependent. Propranolol partly but phentolamine and phenoxybenzamine completely block adenosine effects. It is suggested that adenosine and catecholamine share certain common receptors but perform different functions respectively.

Key words: adenosine, action potential, catecholamine receptor, phentolamine, phenoxyben zamine, propranolol