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Neuroendocrine mechanism of stress-induced immunosuppression and roles of cytokines.

Research Project

Project/Area Number 07456128
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Basic veterinary science/Basic zootechnical science
Research InstitutionHokkaido University

Principal Investigator

SAITO Masayuki  Hokkaido Univ., Graduate Sch.of Vet.Med., Professor, 大学院・獣医学研究科, 教授 (80036441)

Co-Investigator(Kenkyū-buntansha) 森松 正美  北海道大学, 大学院・獣医学研究科, 助手 (70241370)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥7,200,000 (Direct Cost: ¥7,200,000)
Fiscal Year 1996: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1995: ¥4,500,000 (Direct Cost: ¥4,500,000)
Keywordsstress / Lymphocytes / Sympathetic nervous system / Cytokines
Research Abstract

Various types of stressor suppress immune activities. Previously, we have confirmed a significant role of the sympathetic nervous system (SNS) in the stress-induced immunosuppression. In this study, we examined the effects of brain stimulation on the sympathetically mediated immunosuppression in rats. When the ventromedial hypothalamus (VMH), a putative hypothlamic center linked to the SNS,was stimulated electrically, the proliferative activity of splenic lymphocytes was reduced. The suppressive effect of VMH was not affected by adrenalectomy, but abolished by ganglionic blockade and surgical sympathetic denervation. These results suggest a critical role of the VMH in the stress-induced immunosuppression. Similar suppressive effects were also observed when interleukin-1 (IL-1), a representative cytokine produced in immune cells and brain cells, was given intracerebroventricularly. Brain IL-1 was also found to accelerate noradrenaline turnover in various peripheral organs, implying increased activity of the SNS.There are reports that the stress-induced immunosuppression was attenuated by intracranial injection of anti-IL-1 antibody. Collectively, it was concluded that brain IL-1 and the VMH play important roles in the stress-induced immunosuppression.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] A. Terao et al.: "Roles of prostaglandins D_2 and E_2 in interleukin-1-induced activation of norepinephine turnover in the brain and peripheral organs of rats." J. Neurochem.65. 2742-2747 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S. Okanoto et al.: "Ventromedial hypothalmus suppresses splenic lymphocyte activity through sympathe Iic innervation." Brain Res.739. 308-313 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H. Kitamura at al.: "Central IL-1 induces peripheral IL-6 expression through aympathetic activation." Am. J. Phusiol.(in press). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Terao, A., et al.: "Roles of prostaglandins D2 and E2 in interleukin-1-induced activation of norepinephrine turnover in the brain and peripheral organs of rats." J.Neurochem.65. 2742-2747 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Okamoto, S., et al.: "Ventromedial hypothalmus suppresses splenic lymphocyte activity through sympathetic innervation." Brain Res.739. 308-313 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kitamura, H., et al: "Central IL-1 induces peripheral IL-6 expression through aympathetic activation." Am.J.Physiol.(in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S. Okamoto et al.: "Ventromedial hypothalamus suppresses splenic lymphocyte activity through sympathetic innervation" Brain Research. 739. 308-313 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] K. Mominoki et al.: "Seasonal variations of blood haptoglobin level of brown bears in Japan" Comparative Biochemistry and Physiology. 114A. 349-353 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] A.Terao: "Roles of prostaglaindins D2 and E2 in ID-1-induced activation of NE turnover in the brain and peripheral organs in rats" Journal of Neurochemistry. 65. 2742-2747 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] H.Kitamura: "Plasma haptoglobin response to intracerebroventrilular administration of cytokines in rats." Biomedical Research. 16. 353-356 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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