Nuttall A, Snow H M
Br J Pharmacol. 1982 Oct;77(2):381-8. doi: 10.1111/j.1476-5381.1982.tb09309.x.
1 In a preparation in which cardiovascular reflexes were prevented from occurring, ICI 118,587 (1-(p-hydroxyphenoxy)-3-beta-(morpholinocarbonamido) ethylamino-2-propranol fumarate) caused dose-dependent positive chronotropic and inotropic effects upon the dog heart. 2 The increase in heart rate brought about by ICI 118,587 was about 43% of the maximum increase produced by isoprenaline. 3 For a given chronotropic effect produced by either ICI 118,587 or isoprenaline, each compound produced a similar inotropic effect as indicated by an increase in LV dp/dtmax. 4 In contrast to the direct stimulant action of ICI 118,587 on the heart no direct effects on vascular smooth muscle were observed. 5 ICI 118,587 was shown to be a competitive antagonist of the chronotropic and vasodilator effects of isoprenaline on the heart and blood vessels and of the chronotropic effects of noradrenaline on the heart. 6 It is concluded that ICI 118,587 is a selective beta 1-adrenoceptor partial agonist.
在一种阻止心血管反射发生的制剂中,ICI 118,587(1-(对羟基苯氧基)-3-β-(吗啉甲酰胺基)乙氨基-2-丙醇富马酸盐)对犬心脏产生剂量依赖性的正性变时和变力作用。
ICI 118,587引起的心率增加约为异丙肾上腺素产生的最大增加量的43%。
对于由ICI 118,587或异丙肾上腺素产生的给定变时效应,每种化合物产生的变力效应相似,如左心室dp/dtmax增加所示。
与ICI 118,58对心脏的直接刺激作用相反,未观察到对血管平滑肌的直接作用。
ICI 118,587被证明是异丙肾上腺素对心脏和血管的变时和血管舒张作用以及去甲肾上腺素对心脏的变时作用的竞争性拮抗剂。
得出结论,ICI 118,587是一种选择性β1-肾上腺素能受体部分激动剂。