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Aging of human circadian time keeping system and its management

Research Project

Project/Area Number 13670980
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Psychiatric science
Research InstitutionAkita University

Principal Investigator

SUGAWARA Junya  School of Medicine Research Associate, 医学部, 助手 (10261661)

Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2002: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2001: ¥2,400,000 (Direct Cost: ¥2,400,000)
Keywordsclock genes / circadian rhythem / hPer1 / hBmal1 / Real Time-PCR / hper1 / RT-PCR
Research Abstract

The aim of this study is to establish the gene expression analysis of several clock genes in human peripheral white blood cells to investigate the mechanism of hormonal transmission of circadian signal from biological clock to peripheral organs. We worked on two representative clock genes, human period1 homolog (hPer1: GenBank Accession number AB002107) and human BMAL1a homolog (hBmal1; #D89722), which are expected to possess the mutually opposite phase of gene expression profiles. We obtained whole white cells, or fractions of mononuclear and polynuclear peripheral cells by refined method from the 5 mL of whole peripheral blood collected from the healthy human volunteers. mRNA in each cell fraction was directly extracted using magnetic particle separator,and was converted into the first strand cDNA using AMV reverse transcriptase. We designed PCR primer and hybriprobe sets for each of hPer1, hBmall and β-actin (internal standard housekeeping gene) for the followlng Real Time-PCR. The hybriprobes, oligonucleotides, were designed to possess specific sequences to each target gene, and labelled with fluorescent dyes (fluorescein and LCRed640). After optimization of the PCR conditions, we could obtain stable and efficient amplification curve of these PCR products with high reproducibility. We could detect hPer1 as well as hBmal1 gene expressopn in both of the mononuclear and polynuclear peripheral cell fractions in all of 6 healthy volunteers whose sleep-wake cycles were controlled regularly. In mononuclear cells, both of rhe hPer1 and hBmal1 showed equivalent levels of gene expression. By contrast, hBmal1 showed 4 to 5-fold higher gene expression compared to that of the hPer1 in polynuclear cells. We could also obtain preliminary data that showed obvious diurnal variation in hPer1 gene expression in whole white cells in 4 healthy volunteers, which were analogous to that reported in the rodent suprachiasmatic nucleus.

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] Satoh K et al.: "Hypothermic action of exogenously administered melatonin is dose-dependent in humans"Clin Neuropharmacol. 24. 334-340 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Matsumoto Y: "Total sleep deprivation induces an acute and transient increase in NK cell activity in healthy young volunteers"Sleep.. 24. 804-809 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Matsumoto Y: "Physical activity increases the dissociation between subjective sleepiness and objective performance levels during extended wakefulness in human"Neurosci Lett.. 28. 133 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Echizennya M: "Heat loss, sleepness, and impaired performance after diazepam administration in humans"Neuropsychopharmacology. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Satoh K et al.: "Two pedigrees of familial advanced sleep phase syndrome in Japan"Sleep. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Satoh K: "Hypothermic action of exogenously administered melatonin is dose-dependent in humans."Clin Neuropharmacol. 24. 334-340 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Matsumoto Y: "Total sleep deprivation induces an acute and transient increase in NK cell activity in healthy young volunteers."Sleep.. 24. 804-809 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Matsumoto Y: "Physical activity increases the dissociation between subjective sleepiness and objective performance levels during extended wakefulness in human."Neurosci Lett.. 28. 133-136 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Echizennya M: "Heat loss, sleepness, and impaired performance after diazepam administration in humans."Neuropsychopharmacology. in press.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Satoh K: "Two pedigrees of familial advanced sleep phase syndrome in Japan"Sleep. in press.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Satoh K.et al.: "Hypothermic action of exogenously administered melatonin is dose-dependent in humans"Clin.Neuropharmacol.. 24. 334-340 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] Matsumoto Y.: "Total sleep deprivation induces an acute and transient increase in NK cell activity in healthy young volunteers"Sleep.. 24. 804-809 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] MatsumotoY.: "Physical activity increases the dissociation between subjective sleepiness and objective performance levels during extended wakefulness in human"Neurosci.Lett.. 28. 133-136 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Echizennya M.: "Heat loss, sleepness, and impaired performance after diazepam administration in humans"Neuropsychopharmacology. (in press).

    • Related Report
      2002 Annual Research Report
  • [Publications] Mishima K et al.: "Diminished melatonin secretion in the elderly due to insufficient environmental illumination"J Clin Endocrinol Metab. 86. 129-134 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 三島和夫: "一般医のための睡眠臨床ガイドブック,菱川泰夫,井上雄一編,東京,(老化、痴呆とサーカディアンリズム)"医学書院. 192-206 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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