Metabolism of 5-(Glutathion-S-yl)-.alpha.-methyldopamine following Intracerebroventricular Administration to Male Sprague-Dawley Rats
作者:R. Timothy Miller、Serrine S. Lau、Terrence J. Monks
DOI:10.1021/tx00047a002
日期:1995.7
formation of 5-(N-acetyl-L-cystein-S-yl)-alpha-MeDA (5-[NAC]-alpha-MeDA) in all brain regions, indicating that the brain has the ability to synthesize mercapturic acids. Peak concentrations of 5-(NAC)-alpha-MeDA were found in the order: hypothalamus > midbrain/diencephalon/telencephalon > pons/medulla > hippocampus > cortex > striatum. In contrast to 5-(GSyl)-alpha-MeDA and 5-(CYS)-alpha-MeDA, 5-(NAC)-alpha-MeDA
5-(谷胱甘肽-S-基)-α-甲基多巴胺[5-(GSyl)-α-MeDA]是血清素能神经毒剂3,4-(+/-)-(亚甲二氧基)苯丙胺和3,4的假定代谢产物-(+/-)-(亚甲基二氧基)甲基苯丙胺。几种多酚的谷胱甘肽(GSH)缀合物具有生物(再)活性。因此,作为我们对5-(GSyl)-α-MeDA在MDA介导的神经毒性中的作用的研究的一部分,我们确定了脑室内给予5-(GSyl)-α-MeDA(720 nmol)后的局部脑代谢。雄性Sprague-Dawley大鼠。5-(GSyl)-alpha-MeDA已从所有检查的大脑区域迅速清除,并且γ-谷氨酰转肽酶(gamma-GT)分布的区域差异与5-(半胱氨酸-S-yl)-α的形成相关-甲基多巴胺(5- [CYS] -alpha-MeDA)。我们还观察到在所有大脑区域中都形成了5-(N-乙酰基-L-半胱氨酸-S-基)-α-MeDA(5- [NAC]-