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Effect of Cholinergic Drugs on the Activity of Basic Carboxypeptidases in Rat Nervous Tissue

机译:胆碱能药物对大鼠神经组织碱性羧肽酶活性的影响

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Effects of a single administration of cholinergic drugs (arecoline, atropine, nicotine, mecamylamine) on the activity of carboxypeptidase H and of phenylmethylsulfonyl fluoride-inhibited carboxypeptidase, which are involved in metabolism of neuropeptides, were studied in brain parts and the adrenal glands of rats. The enzyme activities were determined fluorimetrically using specific inhibitors and substrates. In the majority of cases the enzyme activities decreased, and this decrease was retained for at least 72 h. Changes in the activities of the studied enzymes depended on the type of cholinergic action, the nervous system part, and the time after the injection. The changes in activities of the studied carboxypeptidases are supposed to be a possible mechanism responsible for changes in the levels of neuropeptides under the influence of high doses of the drugs.
机译:在大鼠的大脑部分和肾上腺中研究了单次施用胆碱能药物(槟榔碱,阿托品,尼古丁,美卡敏)对羧肽酶H和苯甲基磺酰氟抑制的羧肽酶活性的影响,后者参与神经肽的代谢。 。使用特定的抑制剂和底物以荧光法测定酶活性。在大多数情况下,酶活性下降,并且这种下降至少持续了72小时。所研究的酶的活性变化取决于胆碱能作用的类型,神经系统部位和注射后的时间。据推测,所研究的羧肽酶活性的变化可能是在高剂量药物影响下神经肽水平变化的可能机制。

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