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1993 Fiscal Year Final Research Report Summary

Studies on protection of progression of renal impairment.

Research Project

Project/Area Number 03454221
Research Category

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

Allocation TypeSingle-year Grants
Research Field 内科学一般
Research InstitutionKeio University

Principal Investigator

SARUTA Takao  Keio Univ., Sch.of med., Int.Med.Professor, 医学部, 教授 (70051571)

Co-Investigator(Kenkyū-buntansha) NAKAMOTO Hidetomo  Keio Univ.School of Med., Assistant, 医学部・内科, 助手 (90180421)
SUZUKI Hiromichi  Keio Univ.Sch of med., Asso.Professor, 医学部・内科, 助教授 (80129494)
Project Period (FY) 1991 – 1993
Keywordshypertension / renal impairment / salt / protein / Calcium / Ca channel blocker / ACE inhibitor
Research Abstract

Diet and blood pressure are important in the control of renal function in various renal diseases. Until now it has been made clear that appropriate restriction of salt and protein is effective in patients with renal impairment, but it is unknown that calcium(Ca) supplementation is useful for those patients. Furhtermore it is still controversial how much hypertension is harmful in pateints with renal impairment. In this study the effects of diet and antihypertensive drugs on renal function and blood pressure were studied in animal experiments and in patients with renal impairment.
In the first animal experiment using DOCA-salt adriamycin treated rats, oral Ca supplementation ameliolated a part of chronic progression of renal damage by phosphate binding action. In the second animal experiment using 5/6 nephrectomized salt loaded spontaneously hypertensive rats, effects of various antihypertensive drugs on renal function and hypertension were studied. In this study it was demonstrated that … More an angiotensin converting enzyme(ACE) inhibitor and a Ca channel blocker are more effective than a diuretic to the progression of renal impairment and renal histological changes. However, there were no significact differences between the ACE inhibitor and the Ca channel blocker, although the Ca channel blocker didn't dilate the efferent arteriole different from the ACE inhibitor.
In hypertensive patients with renal impairment 2 types of Ca channel blockers were demonstrated to be effective in the control of hypertension and renal function Ca channel blockers seemed to be safer than ACE inhibitors in patients with advance renal damage showing serum creatinine over 2 mg/dl.
From these studies it was suggested that Ca supplementation in addition to salt and protein restriction is effective for prevention of renal impairment, and Ca channel blockers are also effective in the control of hypertension and renal function as well as ACE inhibitors, although the mechanims of action of Ca channel blockers were supposed to be different from that of ACE inhibitors. Less

  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] 猿田享男 鈴木洋通: "腎不全を有する高血圧患者に対するCa拮抗薬,塩酸マニジピンの長期効果に関する研究" 臨牀と研究. 70. 2276-2284 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 猿田享男: "腎障害を伴った高血圧の治療" 日本内科学会誌. 82. 592-597 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Okada H,et al.: "Effects of orally active V_1-and V_2-vasopressin antagonists on adriamycin-induced nephropathy with DOCA-salt hypertension in rats." Vasopressin eds Gross P et al.John Libbey Eurotext. 517-528 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ikenaga H,et al.: "Enzymuria in non-insulin-dependent diabetic patients" Clinical Science. 84. 469-475 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Saruta T: "Studies on aggravation of renal impairment ; Effect of blood pressure and diet.(in Japanese)." Pathophsiology. 12. 141 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nakamura M: "Effect of oral calcium suuplementation on the progress of renal failure.(in Japanese)." J keio med Ass. 69. 191 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Suzuki H et al.: "Increases in No_2/No_3 excretion in the urine as an indicator of the release of endotherium derived relaxing factor during elevation of blood pressure." Clin Sci. 82. 631 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ikenaga H et al.: "Role of No on pressure natriuresis in Wistar-Kyoto and spontaneously hyper-tensive rats." Kid International. 43. 205

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ikenaga H et al.: "Enzymuria in non-insulin dependent diabetic patients : sign of tubular cell dysfunction." Cli Sci. 84. 469 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Saruta T Suzuki H: "Efficacy of manidipine in the treatment of hypertension with renal impairment : A multicenter trial." Am Heart J. 125. 630 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Saruta T: "Treatment of hypertensive patients with renal impairment, (in Japanese)." K Jap Soc Intern Med. 82. 592 (1993)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1995-03-27  

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