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Phase Differences in Expression of Circadian Clock Genes in the Central Nucleus of the Amygdala, Dentate Gyrus, and Suprachiasmatic Nucleus in the Rat

Title:

Phase Differences in Expression of Circadian Clock Genes in the Central Nucleus of the Amygdala, Dentate Gyrus, and Suprachiasmatic Nucleus in the Rat

Harbour, Valerie, Weigl, Yuval, Robinson, Barry and Amir, Shimon (2014) Phase Differences in Expression of Circadian Clock Genes in the Central Nucleus of the Amygdala, Dentate Gyrus, and Suprachiasmatic Nucleus in the Rat. PLoS ONE, 9 (7). e103309.

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Official URL: http://dx.doi.org/10.1371/journal.pone.0103309

Abstract

We performed a high temporal resolution analysis of the transcript level of two core clock genes, Period2 (Per2) and Bmal1,
and a clock output gene, Dbp, in the suprachiasmatic nucleus (SCN), the master circadian clock, and in two forebrain
regions, the lateral part of the central nucleus of the amygdala (CEAl), and dentate gyrus (DG), in rats. These regions, as we
have shown previously, exhibit opposite rhythms in expression of the core clock protein, PERIOD2 (PER2). We found that the
expression of Per2, Bmal1 and Dbp follow a diurnal rhythm in all three regions but the phase and amplitude of the rhythms
of each gene vary across regions, revealing important regional differences in temporal dynamics underlying local daily
rhythm generation in the mammalian forebrain. These findings underscore the complex temporal organization of
subordinate circadian oscillators in the forebrain and raise interesting questions about the functional connection of these
oscillators with the master SCN clock.

Divisions:Concordia University > Faculty of Arts and Science > Biology
Item Type:Article
Refereed:Yes
Authors:Harbour, Valerie and Weigl, Yuval and Robinson, Barry and Amir, Shimon
Journal or Publication:PLoS ONE
Date:2014
Funders:
  • Concordia Open Access Author Fund
Digital Object Identifier (DOI):10.1371/journal.pone.0103309
ID Code:978787
Deposited By: SHIMON AMIR
Deposited On:29 Jul 2014 15:40
Last Modified:18 Jan 2018 17:47
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