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Regulation of arginine vasopressin in the human heart

Ikuyoshi Watanabe1, Shigemasa Tani, Ken Nagao

  • 1Division of Cardiovascular Medicine, Surugadai Nihon University Hospital, Tokyo, Japan. ikuwata@med.nihon-u.ac.jp

Circulation Journal : Official Journal of the Japanese Circulation Society
|October 26, 2005
PubMed

Insights

Arginine vasopressin (AVP) is regulated in the human heart. Increased AVP levels correlate with enhanced cardiac function, suggesting localized AVP production and receptor synthesis in response to volume load.

Area of Science:

  • Cardiovascular Physiology
  • Endocrinology

Background:

  • The role of arginine vasopressin (AVP) in cardiac function remains unclear.
  • Investigating local regulation of AVP within the human heart is crucial.

Purpose of the Study:

  • To determine if arginine vasopressin (AVP) is regulated within the human heart.
  • To explore the relationship between AVP levels and cardiac function.

Main Methods:

  • Analyzed plasma AVP levels in 93 patients at the aortic root and coronary sinus.
  • Correlated AVP levels with cardiac function parameters including left ventricular volumes and stroke volume.
  • Grouped patients based on AVP level changes (increased vs. non-increased).

Main Results:

  • Significant differences in left ventricular end-diastolic volume index between groups (p<0.0234).
  • Significant differences in left ventricular stroke volume index between groups (p<0.0137).
  • Patients with increased AVP showed enhanced cardiac function parameters.

Conclusions:

  • Suggests local production and synthesis of AVP and its receptors in the human heart.
  • Indicates enhanced AVP activity in the heart under conditions of volume load.
  • Highlights a potential role for AVP in modulating cardiac function regionally.
Abstract

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