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The role of organic cation transporters in acute respiratory distress syndrome

Research Project

Project/Area Number 16590749
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Respiratory organ internal medicine
Research InstitutionEhime University

Principal Investigator

OGASAWARA Masahito  Ehime University, School of Medicine, Associate professor, 医学部, 助教授 (00325367)

Co-Investigator(Kenkyū-buntansha) YAMAUCHI Kohei  Iwate medical University, School of Medicine, Associate professor, 医学部, 助教授 (20200579)
SAITO Shouichirou  Gifu University, Basic verterinary Medicine, Associate professor, 応用生物学部, 助教授 (60325371)
MAEYAMA Kazutaka  Ehime University, School of Medicine, Professor, 医学部, 教授 (00157158)
Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2005: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2004: ¥2,100,000 (Direct Cost: ¥2,100,000)
KeywordsAcute Respiratory Distress Syndrome / Organic cation transporter / Knockout mice
Research Abstract

Acute respiratory distress syndrome (ARDS), which is caused by several etiology such as severe infection, shares common characteristics of pulmonary edema, acute alveolar injury and increased permeability of pulmonary capillary. Corticosteroids, anti-histamine agents and β-adrenergic receptor agonists have been considered as a potential treatment for ARDS. In some of the cases of ARDS, these therapies seem effective for improvement of mortality. From this evidence, histamine and catecholamines are thought to be involved in modification of pathology of ARDS. We investigated the role of organic cation transporters in LPS induced ARDS model using OCT-3 knockout(KO) mice. Organic cation transporters (OCTs) are expressed in extraneuronal tissues such as lung tissue and especially, OCT-2 and OCT-3 can transport histamine and catecholamines into cells and eliminate excess amount of histamine and catecholamine from the tissues. We tested survival rate in LPS induced endotoxemia model and found that the significant decrease in survival rate was shown in OCT3 KO mice. Furthermore, histamine content in spleen tissue of OCT-3 KO mice in LPS induced endotoxemia model was higher than that of wild type mice, suggesting that the higher content of histamine at the constitutional level have possibility to change Th1/Th2 balance through histamine receptors in T lymphocytes. Moreover, in this model of endotoxemia, inducible histamine production in macrophage would increase and inhibition of histamine clearance in microenvironment would participate in increase of histamine content due to OCT-3 deficiency.

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (5 results)

All 2006

All Journal Article (5 results)

  • [Journal Article] Organic cation transporters as a histamine transporter and histamine metabolism2006

    • Author(s)
      Masahito Ogasawara et al.
    • Journal Title

      Journal of pharmacological science In press

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] ヒスタミン代謝における有機陽イオントランスポーターの役割2006

    • Author(s)
      小笠原正人 他2名
    • Journal Title

      Allegology In press

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Recent advance in Molecular Pharmacology of the histamine systems : Organic Cation Transporters as a Histamine Transporter and Histamine Metabolism2006

    • Author(s)
      Masahito Ogasawara et al.
    • Journal Title

      Journal of Pharmacological science (in press)

    • NAID

      10018237241

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Role of organic cation transporter in histamine metabolism2006

    • Author(s)
      Masahito Ogasawara et al.
    • Journal Title

      Allegology (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Organic cation transporters as a histamine transporter and histamine metabolism2006

    • Author(s)
      Masahito Ogasawara et al.
    • Journal Title

      Journal of pharmacological science (In press)

    • Related Report
      2005 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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