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Molecular biological and electrophysiological studies of inherited retinal degenerations

Research Project

Project/Area Number 17591843
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Ophthalmology
Research InstitutionUniversity of Miyazaki

Principal Investigator

NAOI Nobuhisa  University of Miyazaki, 医学部, 教授 (50211412)

Co-Investigator(Kenkyū-buntansha) CHUMAN Hideki  宮崎大学, 医学部, 准教授 (20244204)
KAWANO Naoko  宮崎大学, 医学部, 助教 (00336306)
CHUMAN Tomomi  University of Miyazaki, Faculty of Medicine, Instructor, 医学部, 助手 (50320495)
Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2006: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2005: ¥2,000,000 (Direct Cost: ¥2,000,000)
Keywordsretinitis pigmentosa / retinal degeneration / gene analysis / crysralline dystrophy / retinoschisis / 網膜分離症 / クリスタリン網膜症 / 遺伝子解析 / X連鎖性 / 網膜電図 / ERG
Research Abstract

本年度も従来に引き続いて網膜色素変性症の患者の遺伝子解析を行った。特にX連鎖性網膜色素変性症の患者の女性例においてはわれわれが従来興味を持って検索してきたRPGR遺伝子、exon ORF15領域にc.2563G>T(ORF15+810G>T)(p.E855X)とc.2893G>T(ORF15+1140G>T)(p.E965X)の複合ヘテロ変異を持つ症例があることを見出した。この患者ではまだ詳細な機能解析は行っていないが女性であるにもかかわらず男性患者と同じように早期から強度の変性がおきうることが予想される。今後家系内での機能解析を含めた研究が必要であり、計画を立てているところである。
従来網膜色素変性症では視細胞、網膜色素上皮に変性の場があり、網膜内層である網膜神経節細胞や神経線維層には異常を来さないとされてきた。しかし最近の電気生理学的あるいは形態学的研究によって必ずしもそうではなく、網膜内層にも変化が及んでいることが報告されてきている。われわれは電気生理学的な方法のみならず、光干渉断層計(OCT)を使用して網膜内層の層別の形態を解析している。遺伝子情報と合わせて、どのような変異を持つ症例が内層の変性が大きいかを検討してきた。将来人工網膜刺激装置が実用化された時に網膜内層の機能が残っていないと視機能が得られないことが予想されるが、この研究によりその判別が可能になると予想される。また網膜変性症で網膜内層特に神経節細胞の機能を温存するための基礎実験を行い、ビタミンB12等で効果があるかを検討している。

Report

(4 results)
  • 2009 Annual Research Report
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • Research Products

    (22 results)

All 2009 2007 2006 2005

All Journal Article (20 results) (of which Peer Reviewed: 1 results) Presentation (1 results) Book (1 results)

  • [Journal Article] 両側性朝顔症候群にもやもや病を合併した1例2009

    • Author(s)
      河野尚子, 中馬秀樹, 齋藤真美, 中馬智巳, 直井信久, 杉本哲朗, 是枝麻子
    • Journal Title

      臨床眼科 63巻

      Pages: 1927-2931

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Novel Truncating Rs1 Mutation Associated With X-Linked Juvenile Retinoschisis Nitric Oxide in Optic Neuritis and Multiple Sclerosis2007

    • Author(s)
      Zi-Bing Jin
    • Journal Title

      Japanese Journal of Ophthalmology 51・1

      Pages: 71-73

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Differential expression of Kir4.1 and aquaporin 4 in the retina from endotoxin-induced uveitis rat2007

    • Author(s)
      Xiao-Qiang Liu
    • Journal Title

      Molecular Vision 13

      Pages: 309-317

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] A Novel Truncating Rs 1 Mutation Associated With X-Linked Juvenile Retinoschisis2007

    • Author(s)
      Jin ZB, Nao-I N
    • Journal Title

      Japanese Journal of Ophthalmology 51・1

      Pages: 71-73

    • NAID

      10018538965

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Differential expression of Kir4.1 and aquaporin 4 in the retina from endotoxin-induced uveitis rat2007

    • Author(s)
      Liu XQ, Kobayashi H, Jin ZB, Wada A, Nao-I N
    • Journal Title

      Molecular Vision 13

      Pages: 309-317

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Clinical and Molecular Findings in Three Japanese Patients with Crystalline Retinopathy2006

    • Author(s)
      Zi-Bing Jin
    • Journal Title

      Japanese Journal of Ophthalmology 50

      Pages: 426-431

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Mutational analysis of RPGR and RP2 genes in Japanese patients with retinitis pigmentosa : identification of four mutations2006

    • Author(s)
      Zi-Bing Jin
    • Journal Title

      Molecular Vision 12

      Pages: 1167-1174

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] RCC1-LIKE DOMAIN AND ORF15 : ESSESTIAL IN RPGR GENE. Chapter of Retinal Degenerative Diseases2006

    • Author(s)
      Zi-Bing Jin
    • Journal Title

      Advances in Experimental Medicine and Biology 571

      Pages: 29-33

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Nitric Oxide in Optic Neuritis and Multiple Sclerosis2006

    • Author(s)
      Hideki Chuman
    • Journal Title

      Journal of Neuro-Ophthalmology 26・2

      Pages: 85-86

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Clinical and Molecular Findings in Three Japanese Patients with Crystalline Retinopathy2006

    • Author(s)
      Jin ZB, Ito S, Saito Y, Inoue Y, Yanagi Y, Nao-i N
    • Journal Title

      Japanese Journal of Ophthalmology 50

      Pages: 426-431

    • NAID

      10019263593

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Mutational analysis of RPGR and RP2 genes in Japanese patients with retinitis pigmentosa : identification of four mutations2006

    • Author(s)
      Jin ZB, Liu XQ, Hayakawa M, Murakami A, Nao-i N, N
    • Journal Title

      Molecular Vision 12

      Pages: 1167-1174

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] RCC1-LIKE DOMAIN AND ORF15 : ESSESTIAL IN RPGR GENE. Chapter of Retinal Degenerative Diseases2006

    • Author(s)
      Jin ZB, Hayakawa M, Murakami A, Nao-i N
    • Journal Title

      Advances in Experimental Medicine and Biology 571

      Pages: 29-33

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Nitric Oxide in Optic Neuritis and Multiple Sclerosis2006

    • Author(s)
      Chuman H
    • Journal Title

      Journal of Neuro-Ophthalmology 26・2

      Pages: 85-86

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Novel deletion spanning RCC1-like domain of RPGR in Japanese X-linked retinitis pigmentosa family2005

    • Author(s)
      Jin ZB, Liu XQ, Uchida A, Vervoort R, Morishita K.Hayakawa M, Murakami A, Matsumoto N, Niikawa N, Nao-i N
    • Journal Title

      Molecular Vision 11

      Pages: 535-541

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Relaxant effect of adrenomedullin on bovine isolated iris sphincter muscle under resting conditions.2005

    • Author(s)
      Uchikawa Y, Okano M, Sawada A, Asada Y, Kobayashi H, Wada A, Nao-i N, Ohkura M, Tanaka N, Yamamoto R
    • Journal Title

      Clinical and experimental pharmacology & physiology 32(8)

      Pages: 675-680

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] RELAXANT EFFECT OF ADRENOMEDULLIN ON BOVINE ISOLATED IRIS SPHINCTER MUSCLE UNDER RESTING CONDITIONS2005

    • Author(s)
      Y Uchikawa
    • Journal Title

      Clinical and Experimental Pharmacology and Physiology (32)

      Pages: 675-680

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Novel deletion spanning RCC1-like domain of RPGR in Japanese X-linked retinitis pigmentosa family2005

    • Author(s)
      Zi-Bing Jin
    • Journal Title

      Molecular Vision 11

      Pages: 535-541

    • Related Report
      2005 Annual Research Report
  • [Journal Article] トリアムシノロンTenon下注射と感染症2005

    • Author(s)
      直井 信久
    • Journal Title

      眼科プラクティス 1

      Pages: 130-131

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 書評 杉田新:眼科研修医のための眼底疾患キーワード2005

    • Author(s)
      直井 信久
    • Journal Title

      日本の眼科 76(3)

      Pages: 309-309

    • Related Report
      2005 Annual Research Report
  • [Journal Article] ハンフリー10-2プログラムが診断に有用であった同名性孤立暗点を生じた二例2005

    • Author(s)
      遠藤 寛子
    • Journal Title

      日本視能訓練士協会誌

      Pages: 185-189

    • Related Report
      2005 Annual Research Report
  • [Presentation] Comparison of Outcomes After Indocyanine Green-and Brilliant Blue G-Assisted Internal Limiting Membrane Peeling During Macular Hole Surgery2009

    • Author(s)
      Maki Kozawa, Nobuhisa Nao-i
    • Organizer
      American Academy of Ophthalmology 2009 Joint Meeting
    • Place of Presentation
      Moscone Center(San Francisco)
    • Year and Date
      2009-10-26
    • Related Report
      2009 Annual Research Report
  • [Book] ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY Volume 572 RETINAL DEGENERATIVE DISEASES2005

    • Author(s)
      Zi-Bing Jin
    • Total Pages
      557
    • Publisher
      Springer Science+Business Media, Inc.
    • Related Report
      2005 Annual Research Report

URL: 

Published: 2005-04-01   Modified: 2016-04-21  

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