Light-at-night exposure affects brain development through pineal allopregnanolone-dependent mechanisms

Shogo Haraguchi*, Masaki Kamata, Takuma Tokita, Kei Ichiro Tashiro, Miku Sato, Mitsuki Nozaki, Mayumi Okamoto-Katsuyama, Isao Shimizu, Guofeng Han, Vishwajit S. Chowdhury, Xiao Feng Lei, Takuro Miyazaki, Joo Ri Kim-Kaneyama, Tomoya Nakamachi, Kouhei Matsuda, Hirokazu Ohtaki, Toshinobu Tokumoto, Tetsuya Tachibana, Akira Miyazaki, Kazuyoshi Tsutsui

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

21 被引用数 (Scopus)

抄録

The molecular mechanisms by which environmental light conditions affect cerebellar development are incompletely understood. We showed that circadian disruption by light-at-night induced Purkinje cell death through pineal allopregnanolone (ALLO) activity during early life in chicks. Light-at-night caused the loss of diurnal variation of pineal ALLO synthesis during early life and led to cerebellar Purkinje cell death, which was suppressed by a daily injection of ALLO. The loss of diurnal variation of pineal ALLO synthesis induced not only reduction in pituitary adenylate cyclase-activating polypeptide (PACAP), a neuroprotective hormone, but also transcriptional repression of the cerebellar Adcyap1 gene that produces PACAP, with subsequent Purkinje cell death.

本文言語英語
ジャーナルeLife
8
DOI
出版ステータス出版済み - 2019/09

ASJC Scopus 主題領域

  • 神経科学一般
  • 生化学、遺伝学、分子生物学一般
  • 免疫学および微生物学一般

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