AUTORADIOGRAPHIC VISUALIZATION OF NK-3 TACHYKININ BINDING-SITES IN THE RAT-BRAIN, UTILIZING [H-3] SENKTIDE

被引:71
作者
STOESSL, AJ
HILL, DR
机构
[1] MERCK SHARP & DOHME LTD,NEUROSCI RES LABS,HARLOW,ESSEX,ENGLAND
[2] PARKE DAVIS RES LABS,CAMBRIDGE,ENGLAND
关键词
5-HT; Autoradiography; Rat; Senktide; Tachykinin;
D O I
10.1016/0006-8993(90)90105-K
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The autoradiographic distribution of the selective NK-3 tachykinin agonist [3H]senktide was investigated in rat brain. [3H]Senktide bound with high affinity (KD<2.5 mM) and high specificity (>75%) to cerebral cortex and numerous subcortical sites, including the substantia nigra pars compacta. In addition, moderately dense binding was seen in the median but not the dorsal raphe nucleus, and this was disrupted by 5,7-dihydroxytryptamine (5,7-DHT)-induced destruction of 5-HT neurons. 5,7-DHT lesions did not affect the binding of [3H]senktide to forebrain regions, suggesting that 5-HT terminals are devoid of NK-3 receptors. © 1990.
引用
收藏
页码:1 / 7
页数:7
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