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Elucidation of Regulatory Mechanism of Vitamin D- Vitamin D Receptor System in Cardiovascular Tissues in Uremic Milieu

Research Project

Project/Area Number 20K08598
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53040:Nephrology-related
Research InstitutionShowa University

Principal Investigator

OGATA HIROAKI  昭和大学, 医学部, 教授 (30296959)

Co-Investigator(Kenkyū-buntansha) 溝渕 正英  昭和大学, 医学部, 准教授 (90465203)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
KeywordsビタミンD / ビタミンD受容体 / 尿毒勝 / CKD-MBD / 尿毒症 / 心血管障害 / 心筋線維化 / FGF-23
Outline of Research at the Start

CKD-MBDの主要な病態であるvitamin D代謝異常は心血管傷害を引き起こすことが多くの基礎、臨床研究が指し示すことである。in vitroや動物モデルでは確立されているVDRAの臓器効果が、臨床的には明らかに見られない原因は不明であり、大きな謎である。本研究は、尿毒症病態下では全身性VDRA投与が細胞・組織レベルにおけるVD-VDR活性化を抑制し、かえって局所におけるVD活性化障害を惹起することが全身性VDRA投与治療の問題ではないかという仮説に立脚して研究計画を作成した。まず、培養細胞からex vivoの検証を経て、動物モデルを用いて、至適なVDRA治療法の開発を目指す。

Outline of Final Research Achievements

In CKD, disturbed the vitamin D (VD)-VD receptor (VDR) system due to impaired VD activation is involved in the high incidence of cardiovascular disease. However, resistance to exogenous vitamin D administration is clinically observed, and the mechanism remains unknown. In this study, FGF-23 exacerbated myocardial injury in a mouse model of cardiovascular injury, but calcitriol alleviated the injury. Interestingly, myocardial fibrosis was associated with Cyp27/Cyp24 expression in cardiomyocytes. These results suggest that local regulation of VD activation is important for the progression of myocardial injury. The balance between FGF-23 loading and VD activation may be important for cardiovascular protection by activated VD treatment.

Academic Significance and Societal Importance of the Research Achievements

VD-VDR系活性化障害が関与する心血管組織傷害において、外因性VD製剤投与に対する治療抵抗性の存在が示唆されてきた。本研究によってのその抵抗性の機序の一端に外因性VD投与によりFGF-23発現が誘導され、局所のVD活性化障害、VD代謝が亢進し、VD-VDR系活性化が抑制されることが明らかになった。今後、VD-VDR系活性化障害が関与している心腎連関に対する新規治療法の開発に有用な知見である。

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

    (7 results)

All 2024 2023 2022

All Journal Article (6 results) (of which Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (1 results)

  • [Journal Article] Phosphate and Coronary Artery Disease in Patients with Chronic Kidney Disease2024

    • Author(s)
      Ogata Hiroaki、Sugawara Hirohito、Yamamoto Masahiro、Ito Hidetoshi
    • Journal Title

      Journal of Atherosclerosis and Thrombosis

      Volume: 31 Issue: 1 Pages: 1-14

    • DOI

      10.5551/jat.RV22012

    • ISSN
      1340-3478, 1880-3873
    • Year and Date
      2024-01-01
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of aspirin on cardiovascular events in patients undergoing hemodialysis with hyperphosphatemia: A post hoc analysis of the LANDMARK trial2024

    • Author(s)
      Kato Masanori、Ito Hidetoshi、Yamakawa Akane、Kagimura Tatsuo、Fukagawa Masafumi、Yamamoto Masahiro、Saito Yoshinori、Akizawa Tadao、Ogata Hiroaki
    • Journal Title

      Therapeutic Apheresis and Dialysis

      Volume: - Issue: 4 Pages: 580-590

    • DOI

      10.1111/1744-9987.14123

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Fibroblast Growth Factor 23 Exacerbates Cardiac Fibrosis in Deoxycorticosterone Acetate-Salt Mice With Hypertension2023

    • Author(s)
      Saito Tomohiro、Mizobuchi Masahide、Kato Tadashi、Ogata Hiroaki、Koiwa Fumihiko、Honda Hirokazu
    • Journal Title

      Laboratory Investigation

      Volume: 103 Issue: 1 Pages: 100003-100003

    • DOI

      10.1016/j.labinv.2022.100003

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of renin-angiotensin system inhibitors on cardiovascular events in hemodialysis patients with hyperphosphatemia: A post hoc analysis of the LANDMARK trial2023

    • Author(s)
      Saito Yoshinori、Ito Hidetoshi、Fukagawa Masafumi、Akizawa Tadao、Kagimura Tatsuo、Yamamoto Masahiro、Kato Masanori、Ogata Hiroaki
    • Journal Title

      Therapeutic Apheresis and Dialysis

      Volume: 28 Issue: 2 Pages: 192-205

    • DOI

      10.1111/1744-9987.14080

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of vitamin D receptor activators on cardiovascular events in patients on hemodialysis-A post hoc analysis of the LANDMARK study2022

    • Author(s)
      K Yoshida, T Mizukami, M Fukagawa, T Akizawa, H Morohoshi, T Sambe, A Takeshima, H Ito, H Ogata, N Uchida
    • Journal Title

      Ther Apher Dial

      Volume: 2022 Issue: 3 Pages: 523-529

    • DOI

      10.1111/1744-9987.13954

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] An update on phosphate binders for the treatment of hyperphosphatemia in chronic kidney disease patients on dialysis: a review of safety profiles2022

    • Author(s)
      H Ogata, A Takeshima, H Ito
    • Journal Title

      Expert Opin Drug Saf

      Volume: 21 Issue: 7 Pages: 947-955

    • DOI

      10.1080/14740338.2022.2044472

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 血液透析(HD)患者における活性化ビタミンD製剤(VDRA)使用と心血管イベント(CVE)の関連―LANDMARK研究より2022

    • Author(s)
      吉田輝龍、緒方浩顕
    • Organizer
      第65回日本腎臓学会学術総
    • Related Report
      2022 Research-status Report

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

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