• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Inhibitory Effects of Chitosan Oligosacchride Supplementation on Retinal Degeneration Models

Research Project

Project/Area Number 16K00884
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Eating habits
Research InstitutionMukogawa Women's University (2017-2018)
Kansai Medical University (2016)

Principal Investigator

YOSHIZAWA Katsuhiko  武庫川女子大学, 生活環境学部, 教授 (70548396)

Co-Investigator(Kenkyū-buntansha) 岡本 芳晴  鳥取大学, 農学部, 教授 (50194410)
圦 貴司  甲子園大学, 栄養学部, 教授 (50330212)
結城 美智子  兵庫医科大学, 医学部, 助教 (60467587)
螺良 愛郎  関西医科大学, 医学部, 教授 (90098137)
竹之内 明子  武庫川女子大学, 生活環境学部, 嘱託助手 (20779227)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords網膜色素変性症 / 視細胞 / 抗酸化作用 / 酸化ストレス / N-メチル-N-ニトロソ尿素 / C3Hマウス / 遺伝性網膜変性症モデル / キトサンオリゴ糖 / 動物モデル / MNU / 機能性食品 / キチン・キトサン
Outline of Final Research Achievements

Retinitis pigmentosa (RP) is an ophthalmic disease that eventually leads to blindness. The development of new strategy for the therapy is necessary. The effects of chitosan oligosaccharide (COS) on N-methyl-N-nitrosourea (MNU) induced retinal degeneration in rats and hereditary retinal degeneration in C3H mice were examined. In the rats study, central retinal photoreceptor cell ratio was higher in the 4%COS combined group, than in the MNU treated group, and the retinal damage ratio was reduced. 2. At 18 days of C3H mice, the width of retinal outer layer decreased significantly in the DW group, compared to that of the COS combined group. In conclusions, COS suppressed photoreceptor damages in these rodent models involved in oxidative stress. Reduction of oxidative stress by COS may be important. COS appears to be effective in suppressing of human RP.

Academic Significance and Societal Importance of the Research Achievements

ヒト網膜色素変性症は視細胞の進行性の変性・消失を特徴とし、失明を来す遺伝性疾患で未だ治療法のない難病であり、その病態の理解と治療法の開発には動物モデルの存在が必須である。我々は、MNUを用いてヒト網膜色素変性症のラット・マウス動物モデルを確立し、その病態制御を試みてきた。キトサンは、日本人の日常生活で摂取する機会の多いカニやエビなどの甲殻類の甲羅・殻に含まれる多糖類の一種である。我々は甲殻類由来の抗酸化・抗炎症物質であるキトサンのオリゴ糖に着目し、MNU網膜色素変性症モデルと遺伝性網膜変性症モデルでの病態抑制効果を検証した。失明予防策の樹立に寄与するとともに治療法の提言も可能である。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (16 results)

All 2019 2018 2017 2016 Other

All Journal Article (5 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 5 results,  Open Access: 5 results,  Acknowledgement Compliant: 2 results) Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results) Book (3 results) Remarks (1 results)

  • [Journal Article] 眼球毒性の観察された農薬についての文献的考察2019

    • Author(s)
      義澤克彦,金瀬 茜,行光由莉,新家由実子,平塚未夢,平山由佳理,三浦麻里安,榎本祐子,小山千尋,竹之内明子
    • Journal Title

      武庫川女子大学紀要(自然科学)

      Volume: 66 Pages: 1-8

    • NAID

      120006621868

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Nonproliferative and Proliferative Lesions of the Ratand Mouse Special Sense Organs(Ocular [eye and glands], Olfactory and Otic)2018

    • Author(s)
      Meg Ferrell Ramos, Julia Baker, Elke-Astrid Atzpodien, Ute Bach, Jacqueline Brassard, James Cartwright, Cynthia Farman, Cindy Fishman, Matt Jacobsen, Ursula Junker-Walker, Frieke Kuper, Maria Cecilia Rey Moreno, Susanne Rittinghausen, Ken Schafer, Kohji Tanaka, Leandro Teixeira, Katsuhiko Yoshizawa, Hui Zhang
    • Journal Title

      Journal of Toxicologic Pathology

      Volume: 31 Issue: 3_Suppl Pages: 97S-214S

    • DOI

      10.1293/tox.31.97S

    • NAID

      130007399853

    • ISSN
      0914-9198, 1881-915X
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] N-methyl-N-nitrosourea-induced schwannomas in male Sprague-Dawley rats with a literature review of inducible and spontaneous lesions.2016

    • Author(s)
      Yoshizawa K, Yuki M, Kinoshita Y, Emoto Y, Yuri T, Elmore SA, Tsubura A.
    • Journal Title

      Experimental and Toxicologic Pathology

      Volume: 68 Issue: 7 Pages: 371-379

    • DOI

      10.1016/j.etp.2016.05.005

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Spontaneously occurring lymphohematopoietic tumors in three young Sprague Dawley rats.2016

    • Author(s)
      Yoshizawa K, Kinoshita Y, Emoto Y, Tsubura A.
    • Journal Title

      Experimental and Toxicologic Pathology

      Volume: 68 Issue: 5 Pages: 301-305

    • DOI

      10.1016/j.etp.2016.01.004

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Characterization of mammary adenocarcinomas in male rats after N-methyl-N-nitrosourea exposure - Potential for human male breast cancer model.2016

    • Author(s)
      Yoshizawa K, Yuki M, Kinoshita Y, Emoto Y, Yuri T, Shikata N, Elmore SA, Tsubura A.
    • Journal Title

      Experimental and Toxicologic Pathology

      Volume: 68 Issue: 5 Pages: 263-270

    • DOI

      10.1016/j.etp.2016.01.005

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] 網膜色素変性症動物モデルにおけるキトサンオリゴ糖の抑制効果2019

    • Author(s)
      小山千尋、竹之内明子、金瀬茜、行光由莉、榎本祐子、野口貴子、黒住誠司、佐藤公彦、岡本芳晴、義澤克彦
    • Organizer
      第35回日本毒性病理学会学術集会(東京)
    • Related Report
      2018 Annual Research Report
  • [Presentation] Inhibitory effects of chitosan oligosaccharide in green tea extract-induced rat liver injury model.2018

    • Author(s)
      Takenouchi A, Yoshizawa K, Emoto Y, Kinoshita Y, Yuki M, Yuri T, Okamoto Y.
    • Organizer
      14th International Chitin and Chitosan Conference & 12th Asia-Pacific Chitin and Chitosan Symposium (Joint with 32nd Japanese Society for Chitin and Chitosan Conference) (Suita, Japan)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 網膜毒性発症の分子学的メカニズム2018

    • Author(s)
      義澤克彦
    • Organizer
      第38回比較眼科学会基礎部会研究会(名古屋)
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 新規農薬の毒性病理学的評価のトピック - 農薬評価における毒性病理学専門家の役割2018

    • Author(s)
      義澤克彦
    • Organizer
      第45回日本毒性学会学術年会、毒性病理学会からのトピック -レギュラトリーサイエンス-(日本毒性病理学会合同シンポジウム)
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] キトサンオリゴ糖を用いたN-メチル-N-ニトロソ尿素誘発ラット網膜変性症の抑制効果2018

    • Author(s)
      義澤克彦、竹之内明子、榎本祐子、木下勇一、結城美智子、圦貴司、 岡本芳晴
    • Organizer
      第45回日本毒性学会学術年会(大阪)
    • Related Report
      2018 Annual Research Report
  • [Presentation] 緑茶抽出物誘発ラット肝臓障害モデルにおけるミード酸の抑制効果2018

    • Author(s)
      竹之内 明子、榎本 祐子、木下 勇一、浜崎 景、螺良 愛郎、義澤 克彦
    • Organizer
      第34回日本毒性病理学会学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] 緑茶抽出物誘発ラット肝臓障害モデルにおけるキトサンオリゴ糖の抑制効果2018

    • Author(s)
      竹之内明子、井崎汀、板倉小春、高橋亜実、友國成美、藤田明夢、藤原瑠香、義澤克彦
    • Organizer
      第5回日本獣医病理学専門家協会学術集会
    • Related Report
      2017 Research-status Report
  • [Book] Animal Models for the Study of Human Disease), 2nd edition. N-Methyl-N-nitrosourea animal models for retinitis pigmentosa.2017

    • Author(s)
      Yoshizawa K, Emoto Y, Kuwata M, Tsubura A.
    • Total Pages
      1178
    • Publisher
      Elsevier
    • ISBN
      9780128094686
    • Related Report
      2017 Research-status Report
  • [Book] Skin Permeation and Disposition of Therapeutic and Vosmeceutical Compounds. Skin Damage Caused by Chemical Application.2017

    • Author(s)
      Yoshizawa K, Kinoshita Y, Takenouchi A, Tsubura A.
    • Total Pages
      428
    • Publisher
      Springer Japan
    • ISBN
      9784431565246
    • Related Report
      2017 Research-status Report
  • [Book] 新毒性病理組織学 感覚器系 眼および付属腺(涙腺・ハーダー腺)2017

    • Author(s)
      義澤克彦
    • Total Pages
      813
    • Publisher
      西村書店
    • Related Report
      2016 Research-status Report
  • [Remarks] 武庫川女子大学 教員一覧 教員情報 教育研究業績書

    • URL

      http://www.mukogawa-u.ac.jp/gakuin/gyoseki/pdf/id_85206.pdf

    • Related Report
      2018 Annual Research Report 2017 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi