Integrated approach to recover vision by electrical stimulation
Project/Area Number |
25293354
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Ophthalmology
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Research Institution | Osaka University |
Principal Investigator |
Fujikado Takashi 大阪大学, 医学(系)研究科(研究院), 教授 (50243233)
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Co-Investigator(Kenkyū-buntansha) |
森本 壮 大阪大学, 医学(系)研究科(研究院), 准教授 (00530198)
松下 賢治 大阪大学, 医学(系)研究科(研究院), 講師 (40437405)
神田 寛行 大阪大学, 医学(系)研究科(研究院), 助教 (50570248)
三好 智満 大阪大学, 医学(系)研究科(研究院), 助教 (70314309)
辻川 元一 大阪大学, 医学(系)研究科(研究院), 寄附講座教授 (70419472)
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Project Period (FY) |
2013-04-01 – 2017-03-31
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Project Status |
Completed (Fiscal Year 2016)
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Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2015: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2013: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
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Keywords | 電気刺激 / 神経保護 / ラマン分光 / 人工網膜 / 錐体密度 / 補償光学眼底カメラ / ラマン画像 / 経角膜電気刺激 / 神経賦活 / 視神経症 / 軸索再生 / 視覚回復 |
Outline of Final Research Achievements |
In 2 of 3 patients who underwent clinical trial on artificial retina in 2014 - 2015, the residual vision improved 6 months after surgery, suggesting that continuous electrical stimulation is effective to improve neural function. As a basic experiment to elucidate its mechanism, we investigated early changes of neuronal cell death using a Raman microscope and showed that kinetics of mitochondria- related to cell death can be observed in a living state. In retinitis pigmentosa, photoreceptors gradually degenerate. In order to quantify this, we developed an automatic measurement system for cone density using an adaptive optics (AO) fundus camera. We plan to further elucidate the neuronal activation mechanism by electrical stimulation using Raman microscope and AO fundus camera in the future.
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Report
(5 results)
Research Products
(75 results)
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[Journal Article] One-Year Outcome of 49-Channel Suprachoroidal-Transretinal Stimulation Prosthesis in Patients With Advanced Retinitis Pigmentosa.2016
Author(s)
Fujikado T, Kamei M, Sakaguchi H, Kanda H, Endo T, Hirota M, Morimoto T, Nishida K, Kishima H, Terasawa Y, Oosawa K, Ozawa M, Nishida K.
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Journal Title
Invest Ophthalmol Vis Sci.
Volume: 57(14)
Issue: 14
Pages: 6147-6157
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Visual Sensation by Electrical Stimulation Using a New Direct Optic Nerve Electrode Device2015
Author(s)
Nishida K, Sakaguchi H, Kamei M, Gonzalez C, Terasawa Y, Montoya R, Fujikado T, Fontan R, Ozawa M, Mercardo H, Nishida K
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Journal Title
Brain Stimul.
Volume: 8
Issue: 3
Pages: 678-681
DOI
Related Report
Peer Reviewed
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[Journal Article] Feasibility of 2nd generation STS retinal prosthesis in dogs.2013
Author(s)
Fujikado T, Kamei M, Sakaguchi H, Kanda H, Morimoto T, Nishida K, Kishima H, Maruo T, Oosawa K, Ozawa M, Nishida K
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Journal Title
Conf Proc IEEE Eng Med Biol Soc
Volume: Jul
Pages: 3119-3121
DOI
Related Report
Peer Reviewed
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[Presentation] Artificial Vision2016
Author(s)
Fujikado Takashi, Kamei M, Kishima H, Morimoto T, KandaH, Sakaguchi H, Nishida K, Endo T, Lohmann TK, Maruo T, Hirota M, Oosawa K, Ozawa M
Organizer
The 3rd International Symposium on Cognitive Neuroscience Robotics
Place of Presentation
大阪 千里ライフサイエンスセンター
Year and Date
2016-12-11
Related Report
Int'l Joint Research / Invited
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[Presentation] Clinical Trial of 49-Channel STS Retinal Prosthesis for Advanced RP Patients.2016
Author(s)
Fujikado Takashi, Kamei M, Sakaguchi H, Kanda H, Morimoto T, Endo Takao, Nishida Ke, Kishima H, Hirota M, Oosawa K, Ozawa M, Nishida Ko
Organizer
9th Biennial World Research Congress on the Relationship between Neurobiology and Nano-Electronics Focusing on Artificial Vision
Place of Presentation
USA(Dearborn)
Year and Date
2016-09-20
Related Report
Int'l Joint Research
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[Presentation] Clinical Trial of 49-Channel STS Retinal Prosthesis for Advanced RP Patients.2016
Author(s)
Fujikado Takashi, Kamei M, Kishima H, Morimoto T, Kanda H, Sakaguchi H, Nishida K, Endo T, Lohmann T.K., Maruo T, Hirota M, Oosawa K, Ozawa M
Organizer
Retina Conservation and Regeneration
Place of Presentation
Taipei Taiwan
Year and Date
2016-07-09
Related Report
Int'l Joint Research
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[Presentation] One-Year Outcomes of 49-Channel Suprachoroidal-Transretinal Stimulation(STS) Retinal Prosthesis in Patients with Adcanced Retinitis Pigmentosa.2016
Author(s)
Fujikado Takashi, Kamei M, Kishima H, Morimoto T, Kanda Hiroyuki, Sakaguchi Hi, Nishida K, Endo T, Osawa K, Ozawa M
Organizer
ARVO2016
Place of Presentation
Seattle, USA
Year and Date
2016-05-04
Related Report
Int'l Joint Research
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[Presentation] 49極STS型人工網膜の慢性臨床研究の結果2016
Author(s)
不二門尚, 瓶井資弘, 貴島晴彦, 森本壮, 神田寛行, 広田雅和, 坂口裕和, 西田健太郎, 遠藤高生, 圓尾知之, 小澤素生, 大澤孝治, 西田幸二
Organizer
第120回日本眼科学会総会
Place of Presentation
仙台
Year and Date
2016-04-07
Related Report
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[Presentation] Clinical Study of Retinal Prosthesis by 49 Channel Suprachoroidal-Transretinal Stimulation (STS) in Patients with Advanced Retinitis Pigmentosa.2015
Author(s)
Fujikado Takashi, Kamei Motohiro, Kishima Haruhiko, Morimoto Takeshi, Kanda Hiroyuki, Sakaguchi H, Nishida K,Endo T, Lohmann T.K., Maruo T, Hirota M, Oosawa K, Ozawa M
Organizer
Artifitial Vision 2015
Place of Presentation
ドイツ アーヘン
Year and Date
2015-11-28
Related Report
Int'l Joint Research
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[Presentation] 新しい『見え方』-最先端技術に対応したロービジョンケアを考える2015
Author(s)
不二門尚, 瓶井資弘, 坂口裕和, 森本壮, 西田健太郎, 貴島晴彦, 圓尾知之, 神田寛行, 遠藤高生, 大澤孝治, 小澤素生, 西田幸二
Organizer
第69回日本臨床眼科学会
Place of Presentation
名古屋
Year and Date
2015-10-22
Related Report
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[Presentation] 第2世代49極STS型人工網膜の臨床研究2015
Author(s)
不二門尚, 瓶井資弘, 貴島晴彦, 森本壮, 神田寛行, 広田雅和, 坂口裕和, 西田健太郎, 遠藤高生, 圓尾知之, 小澤素生, 大澤孝治, 西田幸二
Organizer
第119回日本眼科学会総会
Place of Presentation
札幌
Year and Date
2015-04-16
Related Report
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[Presentation] Feasibility of 2nd Generation STS Retinal Prosthesis in Dogs2013
Author(s)
Fujikado T, Kamei M, Sakaguchi H, Kanda H, Morimoto T, Nishida K, Kishima H, Maruo T, Oosawa K, Ozawa M, Nishida K
Organizer
35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Place of Presentation
Osaka Japan
Related Report
Invited
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