Circadian expression of clock gene in the optic tectum of Japanese quail

Shinobu Yasuo; Shizufumi Ebihara; Takashi Yoshimura

doi:10.1016/j.brainres.2004.01.031

Circadian expression of clock gene in the optic tectum of Japanese quail

Shinobu Yasuo, Shizufumi Ebihara, Takashi Yoshimura

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	193-196
Number of pages	4
Journal	Brain Research
Volume	1005
Issue number	1-2
DOIs	https://doi.org/10.1016/j.brainres.2004.01.031
Publication status	Published - Apr 16 2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

Neuroscience(all)
Molecular Biology
Clinical Neurology
Developmental Biology

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10.1016/j.brainres.2004.01.031

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title = "Circadian expression of clock gene in the optic tectum of Japanese quail",

abstract = "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.",

author = "Shinobu Yasuo and Shizufumi Ebihara and Takashi Yoshimura",

note = "Funding Information: We thank Nagoya University Radioisotope Center for the use of facilities. This work was supported by the Program for Promotion of Basic Research Activities for Innovative Biosciences (PROBRAIN), and Grant-in-Aid for Young Scientist from the Ministry of Education, Culture, Sports, Science and Technology to T.Y.",

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doi = "10.1016/j.brainres.2004.01.031",

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T1 - Circadian expression of clock gene in the optic tectum of Japanese quail

AU - Yasuo, Shinobu

AU - Ebihara, Shizufumi

AU - Yoshimura, Takashi

N1 - Funding Information: We thank Nagoya University Radioisotope Center for the use of facilities. This work was supported by the Program for Promotion of Basic Research Activities for Innovative Biosciences (PROBRAIN), and Grant-in-Aid for Young Scientist from the Ministry of Education, Culture, Sports, Science and Technology to T.Y.

PY - 2004/4/16

Y1 - 2004/4/16

N2 - 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.

AB - 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.

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Circadian expression of clock gene in the optic tectum of Japanese quail

Abstract

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