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Light-induced mitochondria damage and cell death in the retina

Research Project

Project/Area Number 16K20329
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Ophthalmology
Research InstitutionKeio University

Principal Investigator

Toda Eriko  慶應義塾大学, 医学部(信濃町), 研究員 (90722992)

Research Collaborator OZAWA Yoko  
KAWASHIMA Hirohiko  
Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords網膜 / ミトコンドリア / 光障害 / 光暴露 / 網膜色素変性症
Outline of Final Research Achievements

Six-week old Balb/c male mice were exposed to the light after dark adaptation, and the cell death in the retina was analyzed using TUNEL assay. The TUNEL positive and apoptotic cells were increased only in the photoreceptor layer 2 days after light exposure. The TUNEL staining was positive in the nuclei which were defined by the staining with Dapi. The mice were treated with an antioxidant, which is supposed to affect mitochondria, before light exposure to analyze the effects on the apoptosis, although the significant effect was not detected.

Report

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

    (11 results)

All 2017 2016

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 5 results,  Acknowledgement Compliant: 2 results) Presentation (6 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Neuroprotective effect of bilberry extract in a murine model of photo-stressed retina.2017

    • Author(s)
      Osada H, Okamoto T, Kawashima H, Toda E, Miyake S, Nagai N, Kobayashi S, Tsubota K, Ozawa Y.
    • Journal Title

      PLoS One

      Volume: 12 Issue: 6 Pages: e0178627-e0178627

    • DOI

      10.1371/journal.pone.0178627

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neuroprotective role of retinal SIRT3 against acute photo-stress.2017

    • Author(s)
      Ban N, Ozawa Y, Osada H, Jonathan B. Lin, Toda E, Watanabe M, Yuki K, Kubota S, Rajendra S. Apte, Tsubota K.
    • Journal Title

      NPJ Aging Mech Dis.

      Volume: 3 Issue: 1

    • DOI

      10.1038/s41514-017-0017-8

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Lutein acts via multiple antioxidant pathways in the photo-stressed retina.2016

    • Author(s)
      Kamoshita M, Toda E, Kobayashi S, Tsubota K, Osada H, Ozawa Y
    • Journal Title

      Sci Rep.

      Volume: 22 Issue: 1

    • DOI

      10.1038/srep30226

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Neuroprotective effect of activated 5'-adenosine monophosphate-activated protein kinase on cone system function during retinal inflammation.2016

    • Author(s)
      Kamoshita M, Fujinami K, Toda E, Tsubota K, Ozawa Y
    • Journal Title

      BMC Neurosci.

      Volume: 17 Issue: 1

    • DOI

      10.1186/s12868-016-0268-5

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] The Neuroprotective Effect of Rapamycin as a Modulator of the mTOR-NF-κB Axis during Retinal Inflammation.2016

    • Author(s)
      Okamoto T, Ozawa Y, Kamoshita M, Osada H, Toda E, Kurihara T, Nagai N, Umezawa K, Tsubota K
    • Journal Title

      PLoS One

      Volume: 11(1) Issue: 1 Pages: 1-14

    • DOI

      10.1371/journal.pone.0146517

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Neuroprotective role of activated AMPK against light-induced photoreceptor cell death.2017

    • Author(s)
      Kawashima H, Osada H, Toda E, Okamoto T, Kamoshita M, Nagai N, Tsubota K, Ozawa Y.
    • Organizer
      The Association for Research in Vision and Ophthalmology
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 光障害に対するビルベリーエキスの網膜保護効果.2017

    • Author(s)
      長田秀斗, 岡本知大, 川島弘彦, 戸田枝里子, 小林沙織, 坪田一男, 小沢洋子.
    • Organizer
      第17回日本抗加齢医学会総会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 光照射直後の網膜における酸素消費速度(OCR)の低下2017

    • Author(s)
      川島弘彦,岡本知大,戸田枝里子,長田秀斗,鴨下衛,永井紀博,篠田肇,坪田一男,小沢洋子.
    • Organizer
      第56回日本網膜硝子体学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Aerobic exercise protects retinal function in type 2 diabetic mice.2016

    • Author(s)
      Kamoshita M, Osada H, Toda E, Sano K, Kawashima M, Nagai N, Shinoda H, Tsubota K, Ozawa Y.
    • Organizer
      The Association for Research in Vision and Ophthalmology
    • Place of Presentation
      シアトル(アメリカ)
    • Year and Date
      2016-05-01
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] AMPK activation protects photoreceptors from light-induced degeneration.2016

    • Author(s)
      Kawashima H, Osada H, Toda E, Okamoto T, Kamoshita M, Nagai N, Tsubota K, Ozawa Y.
    • Organizer
      The Association for Research in Vision and Ophthalmology
    • Place of Presentation
      シアトル(アメリカ)
    • Year and Date
      2016-05-01
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] The neuroprotective effect of rapamycin as a modulator of the mTOR-NF-κB axis during retinal inflammation.2016

    • Author(s)
      Okamoto T, Kamoshita M, Osada H, Toda E, Nagai N, Tsubota K, Ozawa Y.
    • Organizer
      The Association for Research in Vision and Ophthalmology
    • Place of Presentation
      シアトル(アメリカ)
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2019-03-29  

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