Circadian clock genes and photoperiodism: Comprehensive analysis of clock gene expression in the mediobasal hypothalamus, the suprachiasmatic nucleus, and the pineal gland of Japanese quail under various light schedules

Shinobu Yasuo, Miwa Watanabe, Naritoshi Okabayashi, Shizufumi Ebihara, Takashi Yoshimura

研究成果: ジャーナルへの寄稿記事

125 引用 (Scopus)

抄録

In birds, the mediobasal hypothalamus (MBH) including the infundibular nucleus, inferior hypothalamic nucleus, and median eminence is considered to be an important center that controls the photoperiodic time measurement. Here we show expression patterns of circadian clock genes in the MBH, putative suprachiasmatic nucleus (SCN), and pineal gland, which constitute the circadian pacemaker under various light schedules. Although expression patterns of clock genes were different between long and short photoperiod in the SCN and pineal gland, the results were not consistent with those under night interruption schedule, which causes testicular growth. These results indicate that different expression patterns of the circadian clock genes in the SCN and pineal gland are not an absolute requirement for encoding and decoding of seasonal information. In contrast, expression patterns of clock genes in the MBH were stable under various light conditions, which enables animals to keep a steady-state photoinducible phase.

元の言語英語
ページ(範囲)3742-3748
ページ数7
ジャーナルEndocrinology
144
発行部数9
DOI
出版物ステータス出版済み - 9 1 2003
外部発表Yes

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Coturnix
Circadian Clocks
Suprachiasmatic Nucleus
Pineal Gland
Hypothalamus
Appointments and Schedules
Gene Expression
Light
Genes
Median Eminence
Arcuate Nucleus of Hypothalamus
Photoperiod
Birds
Growth

All Science Journal Classification (ASJC) codes

  • Endocrinology

これを引用

Circadian clock genes and photoperiodism : Comprehensive analysis of clock gene expression in the mediobasal hypothalamus, the suprachiasmatic nucleus, and the pineal gland of Japanese quail under various light schedules. / Yasuo, Shinobu; Watanabe, Miwa; Okabayashi, Naritoshi; Ebihara, Shizufumi; Yoshimura, Takashi.

:: Endocrinology, 巻 144, 番号 9, 01.09.2003, p. 3742-3748.

研究成果: ジャーナルへの寄稿記事

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abstract = "In birds, the mediobasal hypothalamus (MBH) including the infundibular nucleus, inferior hypothalamic nucleus, and median eminence is considered to be an important center that controls the photoperiodic time measurement. Here we show expression patterns of circadian clock genes in the MBH, putative suprachiasmatic nucleus (SCN), and pineal gland, which constitute the circadian pacemaker under various light schedules. Although expression patterns of clock genes were different between long and short photoperiod in the SCN and pineal gland, the results were not consistent with those under night interruption schedule, which causes testicular growth. These results indicate that different expression patterns of the circadian clock genes in the SCN and pineal gland are not an absolute requirement for encoding and decoding of seasonal information. In contrast, expression patterns of clock genes in the MBH were stable under various light conditions, which enables animals to keep a steady-state photoinducible phase.",
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AU - Ebihara, Shizufumi

AU - Yoshimura, Takashi

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