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Experimental studies on extension of resectability of the liver in dogs.

Research Project

Project/Area Number 61570647
Research Category

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

Allocation TypeSingle-year Grants
Research Field Digestive surgery
Research InstitutionMie University

Principal Investigator

NOGUCHI TAKASHI  Mie University,School of Medicine, Associate Professor, 医学部, 助教授 (40144258)

Co-Investigator(Kenkyū-buntansha) YOKOI HAJIME  Mie University Hospital,Assistant, 医学部付属病院, 助手 (60174843)
伊佐地 秀司  三重大学, 附属病院, 助手 (70176121)
Project Period (FY) 1986 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1987: ¥100,000 (Direct Cost: ¥100,000)
Fiscal Year 1986: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsRemnant liver dysfunction / Lipid peroxidation / Fatty infiltration / CoenzymeQ_<10> / Testosterone / Portal branch ligation / Two stage hepatectomy / 長期生存 / free radical / Coenzyme【Q_(10)】 / 過酸化脂質 / 肝血流量
Research Abstract

The purpose of this investigation was to elucidate pathophisiology and to obtain the survival of dogs after extended hepatectomy.
1. Changes of lipid peroxide and effect of CoenzymeQ_<10>(CoQ_<10>) or Testosterone (Te) after 84% hepatectomy in normal dogs: The amount of lipid peroxide in the plasma and remnant lives increased much more after 84% hepatectomy than after 70% hepatectomy, causing significant impairment of the remnant liver function. To prevent hepatic dysfunction after hepatectomy, CoQ_<10> or Te were administered and the results were as follows : (1) Survival rate of more than 4weeks after extended hepatectomy significantly increased up. (2) The increase of lipid peroxide in the plasma and remnant liver was remarkably decreased. (3) The liver function was restoring with subsequent good liver regeneration. (4) Te inhibited the fatty infiltration of the remnant liver in the early postoperative stage, and also lipid peroxidation depended on reduced nicotinamide adenine dinucleotide phosphate(NADPH).
2. 84% hepatectomy of normal liver and 70% hepatectomy of DMNA induced liver cirrhosis, following portal branch ligation of hepatectomized area : The survival rate of more than 4weeks after hepatectomy following portal branch ligation was much higher than in one stage extended hepatectomy. In the extended hepatectomy following portal branch ligation, the remnant liver function, blood flow and liver regeneration were better than in one stage extended hepatectomy.
Because the prognosis of hepatectomy depends on remnanat liver function, the inhibition of lipid peroxidation in remnant liver using CoQ_<10> or Te and the consolidation of regeneration in non ligated area by portal branch ligation made the extension of resectability of the liver possible.

Report

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

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 野口孝: 外科. 48. 328-334 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 野口孝: 肝胆膵. 16. 239-246 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 水本龍二: "「肝の外科-肝切除を中心に」二期的肝切除法:門脈枝・肝動脈枝結紮後肝切除(印刷中)" 医学教育出版社, (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Takashi NOGUCHI: "Treatment for primary liver cancer." GEKA in Japanese. 48. 328-334 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Takashi NOGUCHI: "Changes and significans of free radicals after the extended hepatectomy." KAN・TAN・SUI(Japan). 16. 239-246 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Ryuji MIZUMOTO: 'Hepatic Surgery-Hepatectomy' Hepatectomy after both ligation of partal branch and hepatic artery.Medical Education-Publishing Company, (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 野口孝: 外科. 48. 328-334 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 水本龍二: "「肝の外科ー肝切除を中心に」 二期的肝切除:門脈枝・肝動脈結紮後肝切除" 医学教育出版社, (1987)

    • Related Report
      1986 Annual Research Report

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

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