The effect of aromatic fluorine substitution in L-DOPA on the in vivo behaviour of [18F]2-, [18F]5- and [18F]6-fluoro-L-DOPA in the human brain

被引:11
作者
Chirakal, R
Vasdev, N
Asselin, MC
Schrobilgen, GJ
Nahmias, C
机构
[1] McMaster Univ, Dept Chem, Hamilton, ON L8S 4M1, Canada
[2] McMaster Univ, Fac Hlth Sci, Dept Radiol, Hamilton, ON L8N 3Z5, Canada
[3] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
L-DOPA; fluoro-L-DOPA; F-18; brain uptake; positron emission tomography;
D O I
10.1016/S0022-1139(02)00025-8
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Remarkable differences in the human in vivo behaviour of each of the three [F-18]-labelled ring fluorinated isomers of L-dihydroxyphenylalanine (L-DOPA) are presented. Unlike [F-18]2-fluoro-L-DOPA, which did not appear to cross the blood brain barrier, [F-18]5-fiuoro-L-DOPA appears to be taken up and cleared from the cerebellum and the striata. In contrast with the 2- and 5-fluoro isomers of L-DOPA, radioactivity derived after injection of [F-18]6-fluoro-L-DOPA is specifically retained in the striata. The present study is the first direct comparison of the time course and distribution of radioactivity in the human brain after intravenous injections of [F-18]2-, [F-18]5- and [(18)]F6-fluoro-L-DOPA. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:33 / 39
页数:7
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