Abstract
LR5182 inhibited the uptake of dopamine in rat striatal synaptosomes and the uptake of norepinephrine in cortical synaptosomes with inhibitor constants, Ki values, of 3nM and 58nM, respectively. It was only a week inhibitor of serotonin uptake in cortical synaptosomes with a Ki value of 1.7μM. The uptake of dopamine and norepinephrine were significantly lowered within an hour after an intraperitoneal injection of LR5182. Among known inhibitors of dopamine uptake in synaptosomes of rat brain, LR5182 is most effective and selective. The rigid structure of LR5182 (Figure 1) suggested a gauche conformation of dopamine to be favored by the striatal uptake of dopamine.
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