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Systematic study on functions of vitamins C and E using a new chemical method

Research Project

Project/Area Number 07458005
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 家政学
Research InstitutionNara Women's University

Principal Investigator

KOJO Shosuke  Nara Women's University, Department of Food Science and Nutrition Professor, 生活環境学部, 教授 (10108988)

Project Period (FY) 1995 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1997: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1996: ¥700,000 (Direct Cost: ¥700,000)
KeywordsVitamin C / Vitamin E / Lipid hydroperoxide / Atherosclerosis / Sialic acid / Aging / Radical reaction / ODS rat / 脂質過酸化 / ビタミンC欠乏 / ビタミンE欠乏
Research Abstract

1. We developed a specific and sensitive method to determine the level of lipid hydroperoxides in animal tissues involving chemical convertion of 1-naphtyldiphenylphosphine into its oxide with lipid hydroperoxides followed by the measurement of the oxide with HPLC.In following chapters, we described the efficiency of lipid hydroperoxide as an index of radical reactions in tissues using typical animal models of enhanced oxidative stress.
2. We reported for the first time the change in the level of lipid hydroperoxides in mouse tissues during aging.
3. We reported for the first time the change in the level of ascorbate in animal tissues during vitamin C deficiency based on our newly developed specific method. The used animal is a ODS rat, which cannot synthesize vitamin C by the lack of a key enzyme in ascorbate biosynthesis.
4. We described the increase of lipid hydroperoxides in the tissue of vitamin E-dificient rats. Since alpha-tocopherol is the most important lipid-soluble antioxidant, its deficiency may be a good model to examine the efficiency of indices of lipid peroxidation in vivo.
5. We studied the nature of interaction of vitamin C with vitamin E by evaluating the change in tissue levels of these vitamins caused by depletion of vitamin C,vitamin E,or simultaneous vitamins C and E in ODS rats based on specific and senstitive determination of these vitamins.
6. We extended our research to oxidative modification of LDL.The role of oxidatively modified LDL in the pathogenesis of atherosclerosis has been well documente. These studies have focused on modifications of lipid and protein parts of LDL.Recently desialylated LDL has received attention in relation to atherosclerosis and coronary artery disease. We examined the possible involvement of radical reaction in de-sialylation of LDL using specific method to determine sialic acid.

Report

(4 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • 1995 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] S.Tokumaru: "Specific and sensitive determination of lipid hydroperoxides with chemical derivatization into 1-naphthyldiphenylphosphine oxide and high-performance liquid chromatography" Analytica Chimica Acta. 307. 97-102 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Tokumaru: "Change of the lipid hydroperoxide level in mouse organs on ageing" Mechanism of Ageing and Development. 86. 67-74 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Tokumaru: "Change in the level of vitamin C and lipid peroxidation in tissues of the inherently scorbutic rat during ascorbate deficiency" J.Agric.Food Chem.44. 2748-2753 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Tokumaru: "Increase of lipid hydroperoxides in tissues of vitamin E-deficient rats" Free Radical Research. 26. 169-174 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tanaka: "Interactions betwen vitamins C and E are observed in tissues of inherently scorbutic rats" Journal of Nutrition. 127. 2060-2064 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tanaka: "Possible involvement of radical reactions in desialylation of LDL" FEBS Letters. 413. 202-204 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Tokumaru, I.Tsukamoto, H.Iguchi and S.Kojo: "Specific and sensitive determination of lipid hydroperoxides with chemical derivatization into 1-naphthyldiphenylphosphine oxide and high-performance liquid chromatography." Anal.Chim.Acta. 307. 97-102 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Tokumaru, H.Iguchi and S.Kojo: "Change of the lipid hydroperoxide level in mouse organs on ageing." Mech.Ageing Dev.86. 67-74 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Tokumaru, S.Takeshita, R.Nakata, I.Tsukamoto and S.Kojo: "Change in the level of vitamin C and lipid peroxidation in tissues of the inherently scorbutic rat during ascorbate deficiency." J.Agric.Food Chem.44. 2748-2753 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Tokumaru, R.Ogino, A.Shiromoto, H.Iguchi and S.Kojo: "Increase of lipid hydroperoxides in tissues of vitamin E-deficient rats." Free Radic.Res.26. 169-174 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tanaka, S.Tokumaru and S.Kojo: "Possible involvement of radical reactions in desialylation of LDL." FEBS Lett.413. 202-204 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Tanaka, T.Hashimoto, S.Tokumaru, H.Iguchi and S.Kojo: "Interactions between vitamin C and vitamin E are observed in tissues of inherently scorbutic rats." J.Nutr.127. 2060-2064 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Tokumaru: "Change of lipid hydroperoxides in tissues of vitamin E-deficient rats" Free Radical Research. 26. 169-174 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Tanaka: "Interactions betwen vitamins C and E are observed in tissues of inherently scorbutic rats" Journal of Nutrition. 127. 2060-2064 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Tanaka: "Possible involvement of radical reactions in desialylation of LDL" FEBS Letters. 413. 202-204 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] S.Tokumaru: "Change of the lipid hydroperoxide level in mouse organs on ageing." Mech.Ageing Dev.86. 67-74 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Tokumaru: "Change in the level of vitamin C and lipid peroxidation in tissues of the inherently scorbutic rat during ascorbate deficiency." J.Agric.Food Chem.44. 2748-2753 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Tokumaru: "Increase of lipid hydroperoxides in tissues of vitamin E-deficient rats." Free Rad.Res.(印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Tokumaru,I.Tsukamoto,H.Iguchi,S.Kojo,: "Specific and sensitive determination of lipid hydroperoxides with chamical derivatization into 1-naphthyldiphenylphosphine oxide and high-performance liquid chromatography" Anal.Chim.Acta. 307. 97-102 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] S.Tokumaru,H.Iguchi,S.Kojo,: "Change of the lipid hydroperoxide level in mouse organs on ageing" Mcch.Ageing Dev.(印刷中). (1996)

    • Related Report
      1995 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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