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Role of free radical in kepatocarcinogenesis

Research Project

Project/Area Number 04670417
Research Category

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

Allocation TypeSingle-year Grants
Research Field Gastroenterology
Research InstitutionTokyo Medical & Dental University

Principal Investigator

MIYAKAWA Hatsupei  Tokyo Medical & Dental University Dept.of Medicine, Assistant, 医学部, 助手 (20219728)

Co-Investigator(Kenkyū-buntansha) MIYAKAWA Hatsupei  Tokyo Medical & Dental University Dept.of Medicine, Assistant (20219728)
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1993: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1992: ¥1,000,000 (Direct Cost: ¥1,000,000)
Keywordsfree radical / 8-hydroxydeoxyguanosine / iron / 6メチルグアニンメチルトランスフェラーゼ / 慢性鉄負荷 / 肝発癌
Research Abstract

C-8 position of guanine residue in DNA is hydroxyrated to produce 8-hydroxydeoxyguanosine(8-OHdG) in vitro by various radical producing agents. The 8-OHdG residue in DNA may cause mutagenesis and/or carcinogenesis, since 8-OHdG induce misleading during DNA synthesis. To investigate whether 8-OHdG increase in iron overloaded rat, we fed rat with 3.0%(w/wt) carbonyl iron for 4 weeks. Liver DNA was separated and 8-OHdG was assayd by HPLC using electrochemical detector. We found that 8-OHdG was significanly increased in iron overloaded rat, on the other hand, only a small peak could be detected in the control rat. These result suggested that hydroxyradical formation was increased through Fenton reaction in iron overload status, which cause 8-OHdG formation in the liver. The increase of hepatic 8-OHdG in iron overloaded status may explain the higher incidence of hepatocellular carcinoma in hemochromatosis than those of other etiologies.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] Kamiyama T.et al: "Role of lipid peroxidation in acetaminophen induced hepatotoxicity:comparison with corbon tetrachloride" Toxicology Letters. 66. 7-12 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 宮川八平: "鉄負荷ラット肝組織中における8-ヒドロキシデオキシグアノシン(8-OHdG)の測定とその意義について" 肝臓. 34. 380 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Miyakawa H.et al: "Hepatitis C virus infection in alcoholic liver cirrhosis in Japan-its contribution to the development of hepatocellular carcinoma" Alcohol & Alcoholism. 28. 85-90 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Tajiri K.et al: "Increased renal susceptibility to oxygen radicals in obstructive jaundice" Hepatology. 16. 261 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Liu J.et al: "Inhibition of acetaminophen hepatotoxicity by acetaldehyde in the rat" Toxicol Lett. 62. 287-292 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Liu J.et al: "Effects of caffeine on paracetamol activation in rat and mouse liver microsomes" Xenobiotica. 22. 433-437 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 宮川八平 他: "肝臓病Up date 92 肝" 中外医学社, 204-207 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 宮川八平 他: "肝臓病の臨床 トピックスと展望" 中外医学社, 73-76 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Miyakawa H., Sato C., Izumi N., Tazawa J., Ebata A., Hattori K., Sakai H., Ikeda T., Hirata R., Sakai Y and Marumo F.: "Hepatitis C virus infection in alcoholic liver cirrhosis in Japan-its contribution to the development of hepatocellular carcinoma" Alcohol & alcoholism. 28. 85-90 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Kamiyama T., Sato C., Liu J., Tajiri K., Miyakawa H., and Marumo F.: "Role of lipid peroxidation in acetaminophen-induced hepatotoxicity : comparison with carbon tetrachrolide" Toxicol Lett. 66. 7-12 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Tajiri K., Sato C., Miyakawa H., Liu J., Kamiyama T., and Marumo F.: "Increased renal susceptibility to oxygen radicals in obstructivejaundice" Hepatology. 16(4). 261 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Liu J., Sato C., Miyakawa H., Kamiyama T., Tajiri K., Goto M and Marumo F.: "Inhibition of acetaminophen hepatotoxicity by acetaldehyde in the rat" Toxicol Lett. 62. 287-292 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Liu J., Sato C., Shigesawa T., Kamiyama T., Tajiri K., Miyakawa H., and Marumo F.: "Effects of caffeine on paracetamol activation in rat and mouse liver microsomes" Xenobiotica. 22. 433-437 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Kamiyama T.: "Role of lipid peroxidation in acetaminophen induced hepatotoxicity:comparison with carbon tetrachloride" Toxicology Letters. 66. 7-12 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 宮川 八平: "鉄負荷ラット肝組織中における8-ヒドロキシデオキシグアノシン(8-OHdG)の測定とその意義について" 肝臓. 34. 380 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Miyakawa H.: "Hepatitis C virus infection in alcoholic liver cirrhosis in Japan-its contribution to the development of hepatocellular carcinoma" Alcohol & Alcoholism. 28. 85-90 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 宮川 八平: "肝臓病Update92 肝炎のA型からG型まで" 中外医学社, P.204-207 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 宮川 八平: "肝発癌におけるアルコールとHCV感染の関与に関する研究" アルコール代謝と肝. 12. 147-151 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Miyakawa H.: "Hepatitis C virus infection in alcoholic liver cirrhosis in Japan-Its contribution to the development of hepatocellular carcinoma" Alcohol & Alcoholism.

    • Related Report
      1992 Annual Research Report
  • [Publications] Liu J.: "Inhibition of acetaminophen hepatotoxicity by acetaldehyde in the rat" Toxicology Letters. 62. 287-292 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Liu J.: "Effects of.caffeine on paracetamol activation in rat and mouse liver microsomes" Xenobiotica. 22(4). 433-437 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Kamiyama T.: "Role of lipid peroxidation in acetaminophenーinduced hepatotoxicity:comparison with carbon tetrachloride" Toxicology Letters. 66. 7-12 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 神山 俊典: "四塩化炭素肝障害における過酸化脂質の関与に関する組織学的検討ーエタノールによる修飾作用について" アルコール代謝と肝. 11. 92-95 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 宮川 八平: "アルコール性肝障害とHCV感染 「肝臓病の臨床 トピックスと展望」 大管 俊明編" 中外医学社, 73-76 (1992)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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