Biosynthesis and synaptic release of GABA and its regulation by presynaptic autoreceptor

Autor: Kuriyama, Kinya, Yoneda, Yukio, Kanmori, Kouji
Zdroj: The Japanese journal of pharmacology; January 1983, Vol. 33 Issue: 1, Number 1 Supplement 1 p37-37, 1p
Abstrakt: It was found that 8-10 % of 3H-glutamic acid (GLU) taken up into striatal slices were converted to 3H-GABA (newly synthesized H-GABA) during the incubation in the presence of nipecotic acid (5×105M). The high potassium (60 mM)-evoked and Ca2dependent release of newly synthesized 3H-GABA was found to be more prominent than that of accumulated 3H-GABA from the incubation medium. The evoked release of 3H-GABA from striatal slices was significantly suppressed by in vitroaddition (10−5M) of δ-aminolevulinic acid (DALA) as well as some GABA agonists such as imidazoleacetic acid and muscimol (MUS).
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