ACTION OF 1-METHYL-4-PHENYL-1,2,3,6-TETRAHYDROPYRIDINE

本研究的长期目标是将 1-甲基-4-苯基-1，2，3，6-四氢吡啶（NMPTP）的原因 帕金森氏症。 最近有报道称灵长类动物注射了 相对小剂量的这种药物出现症状， 组织学图像与这种疾病非常相似， 这种药物产生的效果可能与导致 帕金森症。 为了研究NMPTP的作用，概述了以下程序： 高放射性NMPTP及其衍生物的有机合成 基于文献中描述的合成。 放射性标记 化合物，将被给予动物，以确定摄取和 药物的处置。 将进行实验，看看是否有一个 放射性药物的细胞定位对应于 帕金森症患者体内的组织 的亚细胞分布 也将确定药物。 虽然NMPTP产生帕金森样效应，但没有信息， 是否它实际上是致病剂或这些影响是由于一个 该化合物的代谢物。 因此，NMPTP的代谢将 使用经典的生物化学技术进行研究， 将化合物与组织切片、匀浆和亚细胞培养物一起孵育， 分离和表征馏分和反应产物。 然后可以合成反应产物并测试其生理活性。 方面的影响. 一旦NMPTP的整体代谢被阐明，我们应该 意识到一种或多种化合物可能积累并可能 有毒 这些化合物将由放射性前体合成 以及它们与来自中枢神经系统的细胞成分的相互作用 神经系统将被确定。 化学结构的知识 将有助于预测可能的作用机制。 使用合成 放射性标记的化合物应该提供一种方法来揭示 这些化合物发挥其毒性作用的机制。

The long-term objective of this research is to relate the action of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (NMPTP) to the cause of Parkinson's disease. The recently reported finding that primates injected with relatively small doses of this drug developed symptoms and a histological picture closely resembling this disease raises the possibility that the effects produced by this drug might be the same as those causing Parkinsonism. In order to investigate the action of NMPTP, procedures are outlined for the organic synthesis of highly radioactive NMPTP and related derivatives based on the syntheses described in the literature. The radiolabeled compounds, will be administered to animals to determine the uptake and disposal of the drug. Experiments will be conducted to see if there is a cellular localization of the radioactive drug that corresponds to the tissues known to be affected in Parkinsonism. The subcellular distribution of the drug will also be determined. Although NMPTP produces parkinson-like effects there is no information as to whether it is actually the causitive agent or these effects are due to a metabolite of this compound. For this reason the metabolism of NMPTP will be studied using classical biochemical techniques in which the radioactive compound is incubated with tissue slices, homogenates, and subcellular fractions and the reaction products are isolated and characterized. Reaction products can then be synthesized and tested for the physiological effects. Once the overall metabolism of NMPTP has been elucidated, we should be aware of one or more compounds that may accumulate and are potentially toxic. These compounds will by synthesized using radioactive precursors and their interaction with cellular components derived from the central nervous system will be determined. A knowledge of the chemical structures will aid in predicting possible mechanisms of action. The use of synthetic radiolabeled compounds should provide an approach to uncovering the mechanism by which these compounds exert their toxic action.