Korean Journal of Veterinary Research 2000;40(4):661-664.
The postnatal distribution pattern of GABAergic terminals of the suprachiasmatic nucleus in rat
Seong-joon yi
College of Veterinary Medicine, Kyungpook National University
흰쥐 시각교차위핵(suprachiasmatic nucleus)의 출생직후 GABA성 신경종말의 분포양상
경북대학교 수의과대학
The present study was carried out to reveal the role of ${gamma}$-aminobutylic acid(GABA) during postnatal period in rat. The suprachiasmatic nucleus(SCN) of hypothalamus has been known as the regulation center of circadian rhythm in the mammalians. In this study, we could find many GABAergic terminals in the SCN from day 1 to day 7 after birth. On the basis of these results, it can be said there are some kinds of inhibitory effects by GABA to the light stimulation of newborn rat.
Key Words: GABA, suprachiasmatic nucleus, circadian rhythm, rat

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