Analysis of daily and circadian gene expression in the rat pineal gland.

Analysis of daily and circadian gene expression in the rat pineal gland. Research Abstract Details 

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Analysis of daily and circadian gene expression in the rat pineal gland. Abstract Text:

Chiaki Fukuhara,Gianluca Tosini,

The mammalian pineal gland is an important component of the circadian system. In the present study, we examined the expression of roughly 8000 genes in the rat pineal gland as a function of time of day under light-dark (LD) cycles and in constant dark (DD) using oligo DNA microarray technique. We identified 47 and 13 genes that showed higher levels at night and day, respectively, under LD. The same patterns of expression were also observed in DD. About half of the genes that peaked at night have a known biological function, i.e., transcription factors and proteins that are involved in signaling cascades, whereas 14 are expressed sequence tags and 8 have an unknown biological function. Twelve of the genes that were up-regulated at night were also up-regulated after 1h NE stimulation, thus suggesting that the expression of these genes is controlled by adrenergic mechanisms. Of the 13 genes that were up-regulated in the daytime, 6 coded for proteins that are involved in intracellular signaling pathways. The results obtained with microarray analysis were well correlated with data obtained using real time quantitative RT-PCR. The present results provide new materials to dissect and understand the pineal physiology.

Analysis of daily and circadian gene expression in the rat pineal gland. Publishing Authors By Initials

C Fukuhara,G Tosini,

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Analysis of daily and circadian gene expression in the rat pineal gland. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Neuroscience research

VOLUME: 60

Page Numbers: 192-8

Journal Abbreviation: Neurosci. Res.

ISSN: 0168-0102

DAY: 6

MONTH: 11

YEAR: 2007

Analysis of daily and circadian gene expression in the rat pineal gland. Information

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LANGUAGE: eng

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AFFILIATION: Neuroscience Institute and NSF Center for Behavioral Neuroscience, Morehouse School of Medicine, 720 Westview Drive SW, Atlanta, GA 30310-1495, United States.

Country: Ireland

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MEDLINETA: Neurosci Res

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