Vaysse N, Bastie M J, Pascal J P, Martinel C, Fourtanier G, Ribet A
Gastroenterology. 1977 Apr;72(4 Pt 1):711-8.
alpha Adrenergic agonist (noradrenaline, 2, 20, and 200 mug) and antagonist (phenoxybenzamine, 15 mg), and beta adrenergic agonist (isoproterenol, 2, 20, and 200 mug), and antagonist (propranolol, 6 mg), were tested on isolated perfused canine pancreas under basal conditions, and under stimulation by a background of secretin (0.5 clinical unit per hr), or of caerulein (600 to 1200 ng per hr). Noradrenaline induced a strong vasoconstriction (inhibited by phenoxybenzamine), followed by a moderate vasodilation (possibly mechanical). Noradrenaline did not stimulate a resting pancreas and inhibited a pancreas from secreting in response to secretin or caerulein. After phenoxybenzamine, in the absence of vasoconstriction, this latter effect was reversed into a dose-dependent stimulation of hydrelatic secretion, suggesting that noradrenaline had a direct action on the secretory cell. There was no stimulation of protein and no acinar degranulation. Propranolol and atropine did not modify the effectiveness of noradrenaline. Isoprenaline had a weak vasodilatory effect but no effect on the secretion. Adrenergic blocking agents did not alter the response to secretin or caerulein.
在基础条件下以及在促胰液素(每小时0.5临床单位)或蛙皮素(每小时600至1200纳克)刺激背景下,对离体灌注犬胰腺进行了α肾上腺素能激动剂(去甲肾上腺素,2、20和200微克)和拮抗剂(酚苄明,15毫克),以及β肾上腺素能激动剂(异丙肾上腺素,2、20和200微克)和拮抗剂(普萘洛尔,6毫克)的测试。去甲肾上腺素引起强烈的血管收缩(被酚苄明抑制),随后是适度的血管舒张(可能是机械性的)。去甲肾上腺素不刺激静息胰腺,且抑制胰腺对促胰液素或蛙皮素的分泌反应。在使用酚苄明后,在无血管收缩的情况下,后一种效应转变为对水分泌的剂量依赖性刺激,这表明去甲肾上腺素对分泌细胞有直接作用。未观察到对蛋白质的刺激以及腺泡脱颗粒现象。普萘洛尔和阿托品不改变去甲肾上腺素的作用效果。异丙肾上腺素具有微弱的血管舒张作用,但对分泌无影响。肾上腺素能阻断剂不改变对促胰液素或蛙皮素的反应。