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Cholinergic circuits and signaling in the pathophysiology of schizophrenia.胆碱能回路与信号传导在精神分裂症病理生理学中的作用
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Time-dependent cognitive deficits associated with first and second generation antipsychotics: cholinergic dysregulation as a potential mechanism.与第一代和第二代抗精神病药物相关的时间依赖性认知缺陷:胆碱能失调作为一种潜在机制。
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Novel cholinesterase inhibitors as future effective drugs for the treatment of Alzheimer's disease.新型胆碱酯酶抑制剂作为未来治疗阿尔茨海默病的有效药物。
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用于成像囊泡乙酰胆碱转运体的18F标记正电子发射断层扫描(PET)配体的合成及体内外评价

Synthesis and in vitro and in vivo evaluation of 18F-labeled positron emission tomography (PET) ligands for imaging the vesicular acetylcholine transporter.

作者信息

Tu Zhude, Efange Simon M N, Xu Jinbin, Li Shihong, Jones Lynne A, Parsons Stanley M, Mach Robert H

机构信息

Division of Radiological Sciences, Washington University School of Medicine, St. Louis, Missouri 63110, USA.

出版信息

J Med Chem. 2009 Mar 12;52(5):1358-69. doi: 10.1021/jm8012344.

DOI:10.1021/jm8012344
PMID:19203271
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2765529/
Abstract

A new class of vesicular acetylcholine transporter inhibitor that incorporates a carbonyl group into the benzovesamicol structure was synthesized, and analogues were evaluated in vitro. (+/-)-trans-2-Hydroxy-3-(4-(4-[(18)F]fluorobenzoyl)piperidino)tetralin (9e) has K(i) values of 2.70 nM for VAChT, 191 nM for sigma(1), and 251 nM for sigma(2). The racemic precursor (9d) was resolved via chiral HPLC, and (+/-)-[(18)F]9e, (-)-[(18)F]9e, and (+)-[(18)F]9e were respectively radiolabeled via microwave irradiation of the appropriate precursors with [(18)F]/F(-) and Kryptofix/K(2)CO(3) in DMSO with radiochemical yields of approximately 50-60% and specific activities of >2000 mCi/micromol. (-)-[(18)F]9e uptake in rat brain was consistent with in vivo selectivity for the VAChT with an initial uptake of 0.911 %ID/g in rat striatum and a striatum/cerebellum ratio of 1.88 at 30 min postinjection (p.i.). MicroPET imaging of macaques demonstrated a 2.1 ratio of (-)-[(18)F]9e in putamen versus cerebellum at 2 h p.i. (-)-[(18)F]9e has potential to be a PET tracer for clinical imaging of the VAChT.

摘要

合成了一类新型的将羰基引入苯并维司米克结构的囊泡型乙酰胆碱转运体抑制剂,并对其类似物进行了体外评估。(±)-反式-2-羟基-3-(4-(4-[(18)F]氟苯甲酰基)哌啶基)四氢萘(9e)对囊泡型乙酰胆碱转运体(VAChT)的K(i)值为2.70 nM,对σ(1)为191 nM,对σ(2)为251 nM。通过手性高效液相色谱法拆分外消旋前体(9d),并通过在二甲基亚砜中用[(18)F]/F(-)和穴状配体/K(2)CO(3)对适当前体进行微波辐照,分别对(±)-[(18)F]9e、(-)-[(18)F]9e和(+)-[(18)F]9e进行放射性标记,放射化学产率约为50-60%,比活度>2000 mCi/μmol。大鼠脑中(-)-[(18)F]9e的摄取与对VAChT的体内选择性一致,注射后30分钟时大鼠纹状体的初始摄取为0.911 %ID/g,纹状体/小脑比值为1.88。猕猴的微型正电子发射断层扫描成像显示,注射后2小时,壳核与小脑中(-)-[(18)F]9e的比值为2.1。(-)-[(18)F]9e有潜力成为用于VAChT临床成像的正电子发射断层扫描示踪剂。