An in vivo cholinergic influence on the retention of [H]noradrenaline in regional brain synaptosomes.

Autor: Campos, H., Romero, E., Fuenmayor, L., Marcano de Cotte, D.
Zdroj: Neurochemical Research; May1984, Vol. 9 Issue 5, p607-615, 9p
Abstrakt: Rats were intraventricularly (icv) injected with [H]noradrenaline and the retention of the amine was determined in synaptosomes obtained from cerebral cortex, hypothalamus and brain stem. Previous icv administration of hemicholinium-3, effective enough to markedly decrease brain acetylcholine levels, increased the retention of synaptosomal [H]noradrenaline in hypothalamus and cerebral cortex; this increased retention did not occur in the brain stem. The increased retention of [H]noradrenaline, produced by hemicholinium-3, was reversed by a concomitant icv dose of choline, which in turn reversed the decrease of acetylcholine caused by hemicholinium-3. These results are interpreted as brain cholinergic activity having an influence on the turnover of noradrenaline in some brain regions. [ABSTRACT FROM AUTHOR]
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