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The role of vitamin D in gastrointestinal inflammation and novel therapeutic strategies for inflammatory bowel disease

Research Project

Project/Area Number 20K05940
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 38050:Food sciences-related
Research InstitutionOkayama Gakuin University (2023)
Iryo Sosei University (2021-2022)
Toyama Prefectural University (2020)

Principal Investigator

Okada Tadashi  岡山学院大学, 人間生活学部, 講師 (30623855)

Co-Investigator(Kenkyū-buntansha) 榊 利之  富山県立大学, 工学部, 研究員 (70293909)
橘高 敦史  帝京大学, 薬学部, 教授 (00214833)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
KeywordsビタミンD / 炎症性腸疾患
Outline of Research at the Start

近年、血中ビタミンD(VD)濃度が炎症性腸疾患(IBD)症状の悪性化リスクと強く関連することが報告されている。本研究ではVDとIBDとの関係性を、動物モデルを使用して広く解析し、VDをIBDの治療や予防に活用することを目的とする。具体的には、①腸炎モデルにVDを投与し、VDの IBDに対する治療効果や医薬品応用への可能性を検討する、②VD欠乏モデルの消化管病態を解析し、IBD病態とVDとの関りを理解する、という二つの視点から研究を遂行する。 上記の研究を通して、食事やサプリメントによるVD摂取をIBDの治療や予防に繋げ ることを最終目標に本研究を推進する。

Outline of Final Research Achievements

Blood vitamin D levels are correlated with the risk of various diseases, including inflammatory bowel disease (IBD). Previous reports have suggested that vitamin D administration is effective in preventing or treating IBD. However, other reports have demonstrated the limited effect of vitamin D administration on IBD. Thus, the benefits of vitamin D for patients with IBD remain unclear. In this study, we investigated whether vitamin D was effective as a therapeutic or prophylactic agent for IBD using a dextran sodium sulfate-induced colitis mouse model. Rectal administration of vitamin D3 and a vitamin D analog suppressed the development of colitis, whereas oral administration was ineffective. Our results suggest that vitamin D and its analog might be promising therapeutic agents against IBD.

Academic Significance and Societal Importance of the Research Achievements

炎症性腸疾患は20~30歳代に発症者が多く、また、一度発症すると完治せず、寛解と再燃を繰り返し、慢性的な経過をたどるため、就労・結婚・妊娠・出産といったライフイベントに大きな影響を与える疾患である。このため副作用が少なく安価な新規治療薬・予防薬の開発は意義深いと考えられる。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (6 results)

All 2024 2023 2021

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (1 results)

  • [Journal Article] 炎症性腸疾患に対するビタミンD摂取の意義2024

    • Author(s)
      岡田只士
    • Journal Title

      ビタミン

      Volume: 98 Pages: 18-20

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Expression of Rat Cyp27b1 in HepG2 Cells Using Adenovirus Vector and Its Application to Evaluation of Self-Made and Commercially Available Anti-Cyp27b1 Antibodies2023

    • Author(s)
      Nagao C, Kise S, Iijima A, Okada T, Nakanishi T, Sato S, Nishikawa M, Ikushiro S, Yasuda K, Sakaki T.
    • Journal Title

      Journal of Nutritional Science and Vitaminology

      Volume: 69 Issue: 2 Pages: 90-97

    • DOI

      10.3177/jnsv.69.90

    • ISSN
      0301-4800, 1881-7742
    • Year and Date
      2023-04-30
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Functional analysis of vitamin D receptor (VDR) using adenovirus vector2023

    • Author(s)
      Kise Satoko、Iijima Ayano、Nagao Chika、Okada Tadashi、Mano Hiroki、Nishikawa Miyu、Ikushiro Shinichi、Kanemoto Yoshiaki、Kato Shigeaki、Nakanishi Tomoko、Sato Shigeto、Yasuda Kaori、Sakaki Toshiyuki
    • Journal Title

      The Journal of Steroid Biochemistry and Molecular Biology

      Volume: 230 Pages: 106275-106275

    • DOI

      10.1016/j.jsbmb.2023.106275

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Gene therapy for alopecia in type II rickets model rats using vitamin D receptor-expressing adenovirus vector2023

    • Author(s)
      Kise S, Iijima A, Nagao C, Okada T, Nishikawa M, Ikushiro S, Nakanishi T, Sato S, Yasuda K, Sakaki T.
    • Journal Title

      Sci Rep.

      Volume: 13 Issue: 1 Pages: 18528-18528

    • DOI

      10.1038/s41598-023-45594-2

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Expression of rat Cyp27b1 in HepG2 cells using adenovirus vector and its application to evaluation of self-made and commercially available anti-Cyp27b1 antibodies2023

    • Author(s)
      23.Chika Nagao, Satoko Kise, Ayano Iijima, Tadashi Okada, Tomoko Nakanishi Shigeto Sato, Miyu Nishikawa, Shinchi Ikushiro, Kaori Yasuda, Toshiyuki Sakaki
    • Journal Title

      J Nutr Sci Vitaminol.

      Volume: 69 Pages: 90-97

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] ビタミンDによる新規炎症性腸疾患治療戦略2021

    • Author(s)
      岡田只士、安田佳織、西川美宇、生城真一、橘高敦史、 加藤茂明、榊利之
    • Organizer
      第73回日本ビタミン学会大会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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