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A Calcium Flux Is Required for Circadian Rhythm Generation in Mammalian Pacemaker Neurons

DC Field Value Language
dc.contributor.author곽용호-
dc.date.accessioned2015-08-26T16:43:44Z-
dc.date.available2015-08-26T16:43:44Z-
dc.date.issued2005-
dc.identifier.issn0270-6474-
dc.identifier.urihttps://ir.ymlib.yonsei.ac.kr/handle/22282913/114981-
dc.description.abstractGeneration of mammalian circadian rhythms involves molecular transcriptional and translational feedback loops. It is not clear how membrane events interact with the intracellular molecular clock or whether membrane activities are involved in the actual generation of the circadian rhythm. We examined the role of membrane potential and calcium (Ca2+) influx in the expression of the circadian rhythm of the clock gene Period 1 (Per1) within the rat suprachiasmatic nucleus (SCN), the master pacemaker controlling circadian rhythmicity. Membrane hyperpolarization, caused by lowering the extracellular concentration of potassium or blocking Ca2+ influx in SCN cultures by lowering [Ca2+], reversibly abolished the rhythmic expression of Per1. In addition, the amplitude of Per1 expression was markedly decreased by voltage-gated Ca2+ channel antagonists. A similar result was observed for mouse Per1 and PER2. Together, these results strongly suggest that a transmembrane Ca2+ flux is necessary for sustained molecular rhythmicity in the SCN. We propose that periodic Ca2+ influx, resulting from circadian variations in membrane potential, is a critical process for circadian pacemaker function.-
dc.description.statementOfResponsibilityopen-
dc.format.extent7682~7686-
dc.relation.isPartOfJOURNAL OF NEUROSCIENCE-
dc.rightsCC BY-NC-ND 2.0 KR-
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/2.0/kr/-
dc.subject.MESHAnimals-
dc.subject.MESHCalcium Signaling/physiology*-
dc.subject.MESHCell Cycle Proteins-
dc.subject.MESHCells, Cultured-
dc.subject.MESHCircadian Rhythm/physiology*-
dc.subject.MESHMice-
dc.subject.MESHMice, Transgenic-
dc.subject.MESHNeurons/physiology*-
dc.subject.MESHNuclear Proteins/physiology-
dc.subject.MESHPeriod Circadian Proteins-
dc.subject.MESHRats-
dc.subject.MESHSuprachiasmatic Nucleus/physiology*-
dc.titleA Calcium Flux Is Required for Circadian Rhythm Generation in Mammalian Pacemaker Neurons-
dc.typeArticle-
dc.contributor.collegeCollege of Medicine (의과대학)-
dc.contributor.departmentDept. of Physiology (생리학)-
dc.contributor.googleauthorGabriella B. Lundkvist-
dc.contributor.googleauthorYongho Kwak-
dc.contributor.googleauthorGene D. Block-
dc.contributor.googleauthorHajime Tei-
dc.contributor.googleauthorErin K. Davis-
dc.identifier.doi10.1523/JNEUROSCI.2211-05.2005-
dc.admin.authorfalse-
dc.admin.mappingfalse-
dc.contributor.localIdA00175-
dc.relation.journalcodeJ01633-
dc.identifier.eissn1529-2401-
dc.identifier.pmid16107654-
dc.subject.keywordcircadian rhythm-
dc.subject.keywordcalcium-
dc.subject.keywordpotassium-
dc.subject.keywordsuprachiasmatic nucleus-
dc.subject.keywordPeriod 1-
dc.subject.keywordPERIOD 2-
dc.contributor.alternativeNameKwak, Yong Ho-
dc.contributor.affiliatedAuthorKwak, Yong Ho-
dc.rights.accessRightsfree-
dc.citation.volume25-
dc.citation.number33-
dc.citation.startPage7682-
dc.citation.endPage7686-
dc.identifier.bibliographicCitationJOURNAL OF NEUROSCIENCE, Vol.25(33) : 7682-7686, 2005-
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Physiology (생리학교실) > 1. Journal Papers

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