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ECHOTOXICOLOGY OF ULTRA VIOLET RADIATION ON EARTH ENHANCED BY DEPLETION OF STRATOSPHERIC OZONE

Research Project

Project/Area Number 05453199
Research Category

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

Allocation TypeSingle-year Grants
Research Field 環境保全
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

KAZUSAKA Akio  Hokkaido Univ., Graduate School of Veterinary Medicine, Assoc. Pro., 大学院獣医学研究科, 助教授 (00002113)

Co-Investigator(Kenkyū-buntansha) MASUDA Makihiko  Hokkaido Univ., Graduate School of Veterinary Medicine, Assoc. Pro., 大学院獣医学研究科, 助教授 (00001719)
FUJITA Shoichi  Hokkaido Univ., Graduate School of Veterinary Medicine, Pro., 大学院獣医学研究科, 教授 (10143314)
Project Period (FY) 1993 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥7,000,000 (Direct Cost: ¥7,000,000)
Fiscal Year 1995: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1994: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1993: ¥5,600,000 (Direct Cost: ¥5,600,000)
KeywordsEchotoxicology / Stratospheric ozone / Chloroplast / Chlorophyll / Singlet oxygen / Luminescence spectrum of chlorophyll / Peroxidation of thyrakoid membrane / Induction of protease / 植物葉緑体 / クロロフィル類 / イソフラボングルコサイドの蓄積 / 穀物種子 / エリシター活性の誘導
Research Abstract

The depletion of of stratospheric ozone is considered to enhance UV radiation on the earth and to destroy its echosystem. Echotoxicolgy of UV radiation was studied for plants.
A.The chloroplast fraction of a clover, Trifolium, was found to catalyze the demethylation of imipramine for its starting period. Chlrophyll was suggested to be an active compornent and to lose its catalytic activity spontaneously.
B.A commercial chlorophyll a was used for catalytic demethylation of imipramine under radiation of light above 500nm, indicating that it produces singlet oxygen as a reation intermediate.
C.In interest to utilize chlorophyll a as photocatalyst, it was found to be stable in nonpolar solvent but decomposed partially on MgO.Chlorophyll a impregnated on MgO gave a hydroxy radical under visible light, indicating its usefulness as photocatalyst.
D.Spinach thyarkoid membrane was radiated by UV-A light in interest for its photodamage to plants. The radiation did not affect the amount of chlorophyll contained in it, but its luminescence spectra was changed indicating the photostress of thyrakoid membrane. Photoformation of singlet oxygen was observed in radiation of UV-A,but was deactivated with radiation time. Protease inhibitor stopped its deactivation, suggesting an induction of some kind of protease by UV-A radiation.

Report

(4 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • 1993 Annual Research Report
  • Research Products

    (29 results)

All Other

All Publications (29 results)

  • [Publications] Y.Yamamoto: "Purification and chracterization of a form of cytochrom P-450 from bear liver microsomes." Biochem.Pharmacol.49. 965-970 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.Masuda: "Alterations in activation and deactivation of mutagens in aging rat liver." J.Gerontol.50A. B303-B306 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Hatakeyama: "Paradoxical effect of Sudan III on the in vivo and in vitro genotoxicity elicited by 7,12-dimethylbenz (a)-anthracen." J.Biochem.Toxicol.10. 143-149 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Nakamura A.: "Purification and chracterization of a dog cytochrome p-450 isozymes belonging to CYP2D subfamily and development of its anti-peptide antibody." Drug Metabol.Dispos.23. 1268-1273 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Hoshi H.: "Deblisoquine/sparteine-type polymorphic drug metabolism in wild clethrionomys rufocanus." Drug Metabol.Dispos.23. 1301-1303 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Fujita S.: "Paradoxical effect of 3-methylchlanthrene on bunitrolol metabolism" Drug Metabol.Dispos.24. 254-259 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Yamamoto Y.: "Purification and characterization of a form of cytochrome P450 from bear liver microsomes. Biochem." Pharmacol.49. 965-970 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Masuda M.: "Alteration in activation and deactivation of mutagens in aging rat liver." J.Genentro. : Biol. sCI.50A. B303-B306 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Hatakeyama S.: "Paradoxical effect of Sudan III on the in vivo and in vitro genotoxicity elicited by 7,12-dimethylbenz (a) anthracen." J.Biochem. Toxicol.10. 143-149 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Nakamura A.: "Purification and chracterization of a dog cytochrome p-450 isozymes belonging to CYP2D subfamily and development of its anti-peptide antibody." Drug Metab.23. 1268-1273 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Nakamura A.: "Anti-peptide antibodies possessing an ability to bind CYP2D subfamily in rats, dog and humans." Xenobiotica. 25. 1103-1109 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Hoshi H.: "Deblisoquine/sparteine-type polymorphic drug metabolism in wild clethrionomys rufocanus." Drug Metabol. Dispos.23. 1301-1303 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Fujita S.: "Paradoxical effect of 3-methylchlanthrene on bunitrolol metabolism : kinetic and immunological studies on 4-hydroxylation of bunitrolol catalyzed by two species of cytochrome P-450 in rat liver microsomes." Drug Metabol. Dispos.24. 254-259 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Yamamoto: "Purification and chracterization of a form of cytochrom P-450 from bear liver microsomes." Biochem.Pharmacol.49. 965-970 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] M.Masuda: "Alterations in activation and deactivation of mutagens in aging rat liver." J.Gerontol.50A. B303-B306 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] S.Hatakeyama: "Paradoxical effect of Sudan III on the in vivo and in vitro genotoxicity elicited by 7,12-dimethy lbenz(a)-anthracen." J.Biochem.Toxicol.10. 143-149 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Nakamura A.: "Purification and chracterization of a dog cytochrome p-450 isozymes belonging to CYP20 subfamily and development of its anti-peptide antibody." Drug Metabol.Dispos.23. 1268-1273 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Hoshi H.: "Deblisoquine/sparteine-type polymorphic drug metabolism in wild clethrionomys rufocanus." Drug Metabol.Dispos.23. 1301-1303 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Fujita S.: "Paradoxical effect of 3-methylchlanthrene on bunitrolol metabolism" Drug Metabol.Dispos.24. 254-259 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] M.Masuda: "Evidence of partial involvement of P-450 2D in mutagenic activation of benzo(a)pyrene in liver S-9 fraction from untreated rats." J.Toxcol.Sci.19. 235-238 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Yamamoto: "Purification and chracterization of a from of cytochrom P-450 from bear liver microsomes." Biochem.Pharmacol.(in press). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] M.Masuda: "Alterations in activation and deactivation of mutagens in aging rat liver." J.Gerontol. (in press). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] S.Hatakeyama: "Paradoxical effect of Sudan III on the in vivo and in vitro genotoxicity elicited by 7,12-dimethylbenz(a)-anthracen." J.Biochem.Toxicol.(in press). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] Masubuchi Y.: "Regioselective contribution of the cytochrome P-450 2D subfamily to propranolol metabolism in rat liver microsomes." Drug Metab.Dispos.21. 1012-1016 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Masubuchi Y.: "Substrate stereoselectivity and enantiomer/enantiomer interaction in propranolol metabolism in rat liver microsomes." Biochem.Pharmacol.46. 1759-1765 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Masubuchi Y.: "Participation of the CYP2D subfamily in lidocaine 3-hydroxylation and formation of a reactive metabolite covalently bound to liver microsomal protein in rats." Biochem.Pharmacol.46. 1867-1869 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Fujita S.: "Regio- and Stereoselective propranolol metabolism by 15 forms of purified cytochromes P-450 from rat liver." J.Pharmacol.Exper.Therapeutics. 264. 226-233 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Nomura M.: "Structure of the catalytic site of a silica-supported copper,manganese catalyst." Jpn J.Appl.Phys.32. 496-498 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] Masuda M.: "The concept of reaction route." J.Chem.Phys.99. 4873-4874 (1993)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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