论文部分内容阅读
本文用在体和离体两种实验方法,观察了雨蛙肽(caerulein)对大鼠胃电和收缩运动的影响,分析了迷走神经在其中的作用。胃电分别用双极钢丝插入电极和吸附电极引导,胃的运动则用橡皮囊—换能器法和应变片法记录。结果表明,静脉注射雨蛙肽通常抑制在体胃的电活动和收缩运动,切断双侧迷走神经后这种抑制效应消失。但是,雨蛙肽对离体胃的电活动和收缩运动则有刺激作用。本文结果提示;雨蛙肽对胃的电活动和收缩运动有直接的刺激作用和通过迷走神经的抑制作用。在整体条件下,后者占优势,其直接的兴奋作用不易显现。
In this paper, in vitro and in vivo experiments were conducted to observe the effects of caerulein on gastric electrical and contractile activities in rats and the role of vagus nerve in them. Electrogastrostyle electrodes were respectively inserted with bipolar wires and guided by an adsorption electrode. Stomach movement was recorded with a rubber-bladder transducer and strain gage method. The results show that intravenous injection of melatonin usually inhibits electrical activity in the stomach and contraction of the body movement, blocking the bilateral vagus nerve disappears after the inhibitory effect. However, the phytolamellar peptides stimulate the electrical and contractile activities of the isolated stomach. The results of this paper suggest that the phytolamellar peptide has a direct stimulating effect on gastric electrical activity and contractile activity and an inhibitory effect on the vagus nerve. In the overall condition, the latter is dominant and its direct excitement is not easy to see.