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Studies on mechanisms of atrial natriuretic peptide secretion

Research Project

Project/Area Number 61570405
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Circulatory organs internal medicine
Research InstitutionThe University of Tokyo

Principal Investigator

HIRATA Yasunobu  University of Tokyo, 医学部(病), 助手 (70167609)

Co-Investigator(Kenkyū-buntansha) ISHII Masao  University of Tokyo, 医学部, 教授 (90010363)
MATSUOKA Hiroaki  University of Tokyo, 医学部, 講師 (20111544)
Project Period (FY) 1986 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1988: ¥100,000 (Direct Cost: ¥100,000)
Fiscal Year 1987: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1986: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywordsatrial natriuretic peptide / atrial pressure / urinary sodium excretion / cyclic GMP / secretion / blood pressure / congestive heart failure / 高血圧 / 心筋症ハムスター / 心室 / ノルエピネフリン / ドーパミン / 心肥大 / ペーシング / 迷走神経切断 / 尿中ナトリウム排泄量 / 血漿濃度 / 体液量 / 浸透圧 / 心房圧尿中ナトリウム排泄量
Research Abstract

To explore the pathophysiological roles of atrial natriuretic peptide (ANP), we examined the relationship between atrial pressure and plasma concentration of ANP in various experimental and clinical conditions and the effects of ANP infusion into patients with cardiovascular and renal diseases. Both volume expansion and hyperosmotic stimulus in rats increased plasma concentration of ANP. This increase in the plasma ANP concentration was associated with increases in urinary Na excretion and atrial pressure. Left atrial ballooning and right atrial rapid pacing also increased ANP secretion and atrial pressure. In patients with congestive heart failure, plasma ANP concentration increased with the severity index of the heart failure symptoms, resulting in a significant positive correlation of plasma ANP concentration with atrial pressure. Plasma ANP level was also elevated during paroxysmal atrial tachycardia. These results suggest that atrial strtch seems to be the most important stimulus for ANP secretion. In addition to heart diseases, various kinds of edematous disorders and hypertension also showed increased plasma ANP concentration. When ANP was infused into patients with these diseases, ANP exerted potent vasorelaxant (depressor), natriuretic and alsdosterone suppressive effects, suggesting the possible therapeutic use of this peptide. ANP infusion markedly elevated plasma and urinary cGMP concentrations. These findings support that cGMP acts as an intracellular second messenger of ANP. Furthermore, basal plasma cGMP level was also closely correlated with the plasma concentration of ANP. This suggests that plasma cGMP seems to be a good marker of endogenous ANP activity. Thus, ANP, which secretes through direct or indirect atrial extention, may play a pathophysiological role in blood pressure and body fluid volume regulation.

Report

(4 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Annual Research Report
  • 1986 Annual Research Report
  • Research Products

    (29 results)

All Other

All Publications (29 results)

  • [Publications] Hirata Yasunobu.: Circulation. 78. 1401-1410 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Hirata Yasunobu.: American Journal of Cardiology. 62. 56-58 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Hirata Yasunobu.: Advances in Atrial peptide Research. 2. 444-447 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Hirata Yasunobu.: Japanese Circulation Journal. 52. 1459-1464 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Hirata Yasunobu.: American Journal of Hypertension.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Hirata Yasunobu.: Journal of Clinical and Experimental Hypertension.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunobu Hirata: "The hormonal and renal effects of atrial natriuretic peptide in patients with secondary hypertension" Circulation. 78. 1401-1410 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunobu Hirata: "Estimation of the secretion rate of atrial natriuretic peptide from the coronary sinus in coronary artery disease" American Journal of Cardiology. 62. 56-58 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunobu Hirata: "Raised plasma levels of atrial natriuretic peptide in young and aged cardiomyopathic hamsters" Advances in Atrial Peptide Research. 2. 444-447 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Hirata Yasunobu: "Plasma concentration of alpha-hANP and renal responses to alpha-hANP infusion in patients with congestive heart failure and in those with chronic renal failure" Japanese Circulation Journal. 52. 1459-1464 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Hirata Yasunobu: "The extrarenal effects of atrial natriuretic peptide on body fluid distribution" Americal Journal of Hypertension. in press.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Hirata,Yasunobu: Circulation. 78. 1401-1410 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Hirata,Yasunobu: American Journal of Cardiology. 62. 56-58 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Hirata,Yasunobu: Advanced in Atrial peptide Research. 2. 444-447 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Hirata,Yasunobu: Japanese Circulation Journal. 52. 1459-1464 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Hirata,Yasunobu: American Journal og Hypertension.

    • Related Report
      1988 Annual Research Report
  • [Publications] Hirata,Yasunobu: Journal of Clinical and Experimental Hypertension.

    • Related Report
      1988 Annual Research Report
  • [Publications] Yasunobu Hirata: American Heart Journal. 113. 1463-1469 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] Yasunobu Hirata: Japanese Heart Journal. 28. 53-61 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] Yasunobu Hirata: Japanese Circulation Journal.

    • Related Report
      1987 Annual Research Report
  • [Publications] Yasunobu Hirata: Biologically Active Atrial Peptide.

    • Related Report
      1987 Annual Research Report
  • [Publications] Masao Ishii: Journal of Hypertension. 4(SUPPL 4). S542-S545 (1986)

    • Related Report
      1987 Annual Research Report
  • [Publications] Hiroaki Matsuoka: American Journal of Physiology. 252. E643-E647 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] Yasunobu Hirata: Clinical Science. 72. 165-170 (1987)

    • Related Report
      1986 Annual Research Report
  • [Publications] Yasunobu Hirata: Progress in Medicine. 6. 3217-3222 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] Yasunobu Hirata: American Heart Journal.

    • Related Report
      1986 Annual Research Report
  • [Publications] Yasunobu Hirata: Japanese Heart Journal.

    • Related Report
      1986 Annual Research Report
  • [Publications] Masao Ishii: Japanese Circulation Journal. 50. 1181-1184 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] Hiroaki Matsuoka: American Journal of physiology.

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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