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Pathogenesis of hepatic injury in endotoxemia: with special reference to phosphatidylcholine hydroperoxide accumulation

Research Project

Project/Area Number 03454312
Research Category

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

Allocation TypeSingle-year Grants
Research Field Digestive surgery
Research InstitutionTOHOKU UNIVERSITY

Principal Investigator

OUCHI Kiyoaki  Tohoku University School of Medicine, Associate Professor, 医学部, 助教授 (20124555)

Co-Investigator(Kenkyū-buntansha) SUZUKI Masanori  Tohoku University School of Medicine, Assistant, 医学部附属病院, 助手 (70206530)
MATSUBARA Shuji  Tohoku University School of Medicine, Assistant Professor, 医学部附属病院, 講師 (20165856)
Project Period (FY) 1991 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥6,700,000 (Direct Cost: ¥6,700,000)
Fiscal Year 1992: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1991: ¥6,100,000 (Direct Cost: ¥6,100,000)
Keywordsliver dysfunction / endotoxin / PCOOH / Kupffer cell / leukocyte / endothelial cell / scavenger / 混合培養 / ラット / Kuptter細胞
Research Abstract

The membrane lipid peroxidation of the liver tissue and hepatocytes was studied in order to clarify the pathogenesis of liver dysfunction in endotoxcmia. Phosphatidylcholine hydroperoxide (PCOOH) which is a specific membrane lipid oxidant was measured using high performance liquid chromatography- chemiluminescence technique. Peritonitis was induced in rats by ligation and puncture of the cecum. Blood endotoxin levels were progressively increased until 24 hours after induction of peritonitis. Hepatic PCOOH markedly increased from 740 pmol/mg to 2.628 pmol/mg after 24 hours of peritonitis, and hepatic energy charge reduced from 0.86 to 0.73. In addition, reduction of hepatic energy charge as well as increase of hepatic PCOOH was significantly suppressed by an administration of superoxide dismutase and catalase in rats with peritonitis. As hepatic tissue blood flow showed little changes throughout the experiment, an increased hepatic membranous lipid peroxidation might be one of the main causative factors for the deteriorated hepatic energy metabolism in endotoxemia. The increases of PCOOH of the hepatocytes, as well as GPT in supernatant, were achieved only when endotoxin was added to the co-culture with Kupffer cells, and not to hepatocytes alone. This evidence suggests that Kupffer cells activated by endotoxin may affect membrane lipid peroxidation of the hepatectocytes. Significant contribution of the infiltrating leukocytes and sinusoidal endothelial cells for the pathogenesis of hepatocyte injury in endotoxemia need to be further studies.

Report

(3 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] M.M.Rahman,et al: "The role of phosphatidylcholine hydroperoxide in endo-toxin mediated liver failure of non-cirrhotic and cirr-hotic rats" Gastroenterology. 102. A872 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Kiyoaki Ouchi,et al: "Altered energy metabolism and oxidative injury following endotoxemia in rats with normal or cirrhotic livers" Res Exp Med.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Kiyoaki Ouchi,et al: "Evidence for free radical generation in the etiology of endotoxemea-associated post-operative jaundice" Jpn J Surg.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Kiyoaki Ouchi,et al: "Severe postoperative infection is a major risk factor for hepatic failure in patients with obstructive jaundice:Clinical and experimental animal observations" Jpn J Surg.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] M.M.Rahman,et al: "Increased hepatic phosphatidylcholine gydroperoxide(PCOOH)and deteriorated hepatic energy metabolism in rats with endotoxemia" Dig Surg.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 武藤 大成ほか: "Endotoxinによる初代培養肝細胞の膜脂質過酸化障害についてーKupffer細胞の役割について" 第5回エンドトキシンシンポジウム業績集.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] M.M. Rahman, et al: "The role of phosphatidylcholine hydroperoxide in endotoxin mediated liver failure of non-cirrhotic rats" Gastroenterology. 102. A872 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Kiyoaki Ouchi, et al: "Altered energy metabolism and oxldative injury following endotoxemia in rats with normal or cirrhotic livers" Res Exp Med.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Kiyoaki Ouchi, et al: "Evidence for free radical generation in the etiology of endotoxemia-associated post-operative jaundice" Jpn J Surg.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Kiyoaki Ouchi, et al: "Severe postoperative infection is a major risk factor for hepatic failure in patients with obstructive jaundice: Clinical and experimental animal observations" Jpn J Surg.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] M.M. Rahman, et al: "Increased hepatic phosphatidylcholine hydroperoxide (PCOOH) and deteriorated hepatic energy metabolisn in rats with endotoxemia" Dig Surg.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] M.U.Rahman,et al: "The role of phosphatidylcholine hydroperoxide in endotoxin mediated liver failure of non-cirrhotic and cirrhotic rats" Gastroenterology. 102. A872- (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Kiyoaki Ouchi,et al: "Altered energy metabolism and oxidative injurg following endotoxemia in rats with normal or cirrhotic livers" Res Exp Med.

    • Related Report
      1992 Annual Research Report
  • [Publications] Kiyoaki Ouchi,et al: "Evidence for free radical generation in the etiology of endotoxemia-associated post-operative jaundice" Jpn J Surg.

    • Related Report
      1992 Annual Research Report
  • [Publications] Kiyoaki Ouchi,et al: "Severe postoperative infection is a major risk factor for hepatic failure in patients with obstructive jaundice:Clinical and experimental animal observations" Jpn J Surg.

    • Related Report
      1992 Annual Research Report
  • [Publications] M.M.Rahman,et al: "Increased hepatic phosphatidylcholine hydroperoxide(PCOOH) and deteriorated hepatic energy metabolism in rats with endotoxemia" Dig Surg.

    • Related Report
      1992 Annual Research Report
  • [Publications] 武藤 大成 ほか: "Endotoxinによる初代培養肝細胞の膜脂質過酸化障害についてーKupffer細胞の役割について" 第5回エンドキシンシンポジウム業績集.

    • Related Report
      1992 Annual Research Report
  • [Publications] L.Hashimoto,K.Ouchi,M.Rahman et al: "Increased blood endotoxin levels after the Pringle maneuver in obstructive jaundice induce the release of tree radicals" Digestive Surgery. 7. 164-169 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] L.Hashimoto,K.Ouchi,M.Suzuki,S.Matsumoto: "nergy metabolism changes and oxidative attack after hepatic arterial embolization and chemoembolization in thioacetamide ーinduced cirrhotic livers" Research Experimental Medicine. 191. 91-98 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Rahman,K.Ouchi,Matsubara,et al: "Phosphatidylcholine hydroperoxide in septic rat liver tissue and its relation to the energy metabolism,hemodynamic alternation" Surgery.

    • Related Report
      1991 Annual Research Report
  • [Publications] L.Hashimoto,K.Ouchi,M.Rahman,T.Sato: "The Pringle maneuver and the release of tree radicals" Elsevier Science Publishers B.U., 6 (1988)

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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