Circadian expression of clock gene in the optic tectum of Japanese quail
Circadian expression of clock gene in the optic tectum of Japanese quail
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DOI：
10.1016/j.brainres.2004.01.031
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发表时间：
2004-04
期刊：
影响因子：
2.9
通讯作者：
S. Yasuo;S. Ebihara;T. Yoshimura
中科院分区：
文献类型：
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作者：
S. Yasuo;S. Ebihara;T. Yoshimura
鸟类视顶盖（TeO）的生理活动是由昼夜节律系统调节的。在之前的研究中，我们在日本鹌鹑的TeO中发现了时钟基因的表达。在这里，我们报道了在光照-黑暗（LD）周期、恒定黑暗（DD）和恒定光照（LL）条件下，TeO的灰质和纤维层（SGF）中Per2基因的节律性表达。光脉冲不影响TeO中Per2的表达。这些结果表明，尽管褪黑激素受体和视网膜输入存在局限性，但光刺激和褪黑激素节律对禽类TeO中Per2的节律性表达并不是必需的。
The physiological activity of avian optic tectum (TeO) is known to be regulated by the circadian system. In a previous study, we found clock gene expression in the TeO of Japanese quail. Here we report rhythmic expression of the Per2 gene in the stratum griseum et fibrosum (SGF) of the TeO under a light–dark (LD) cycle, constant darkness (DD), and constant light (LL) conditions. However, light pulse did not affect Per2 expression in the TeO. These results suggest that light stimulus and melatonin rhythm are not essential for rhythmic expression of Per2 in the avian TeO in spite of the localization of melatonin receptors and retinal input.