Relationship between Catecholamine and Renin-Angiotensin System in Spontaneously Hypertensive Rats

  • KAJIWARA Nagao
    Second Department of Internal Medicine, Nihon University School of Medicine and Department of Cardiology, Surugadai Nihon University Hospital
  • KOBAYASHI Yoshiko
    Second Department of Internal Medicine, Nihon University School of Medicine and Department of Cardiology, Surugadai Nihon University Hospital
  • HASHIDA Jun
    Second Department of Internal Medicine, Nihon University School of Medicine and Department of Cardiology, Surugadai Nihon University Hospital
  • UCHIYAMA Takahisa
    Second Department of Internal Medicine, Nihon University School of Medicine and Department of Cardiology, Surugadai Nihon University Hospital
  • KITA Takashi
    Second Department of Internal Medicine, Nihon University School of Medicine and Department of Cardiology, Surugadai Nihon University Hospital
  • SATOH Masahiko
    Second Department of Internal Medicine, Nihon University School of Medicine and Department of Cardiology, Surugadai Nihon University Hospital
  • ONO Masashi
    Second Department of Internal Medicine, Nihon University School of Medicine and Department of Cardiology, Surugadai Nihon University Hospital
  • IZEKI Yasuo
    Second Department of Internal Medicine, Nihon University School of Medicine and Department of Cardiology, Surugadai Nihon University Hospital
  • TEI Tateo
    Second Department of Internal Medicine, Nihon University School of Medicine and Department of Cardiology, Surugadai Nihon University Hospital
  • TERASHIMA Hiroshi
    Second Department of Internal Medicine, Nihon University School of Medicine and Department of Cardiology, Surugadai Nihon University Hospital
  • MISHINA Nobuaki
    Second Department of Internal Medicine, Nihon University School of Medicine and Department of Cardiology, Surugadai Nihon University Hospital
  • KUSHIRO Toshio
    Second Department of Internal Medicine, Nihon University School of Medicine and Department of Cardiology, Surugadai Nihon University Hospital
  • HATANO Michinobu
    Second Department of Internal Medicine, Nihon University School of Medicine and Department of Cardiology, Surugadai Nihon University Hospital

Abstract

PRA and BP were measured after administration of NE and FA to evaluate the relationship between plasma NE and renin-angiotensin system in SHR.<br>(1) PRA increased after drip infusion of NE.<br>(2) BP decreased in proportion to the dose of FA administered and this effect was more prominent in the group with higher blood pressure before administration.<br>(3) PRA increased after intraperitoneal administration of FA, whose vasodilating effect could play a role as a renin releasing factor. During oral administration, BP decreased but PRA showed no change, and this discrepancy could be due to the time needed to achieve proper BP and its final level.

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