2011 Fiscal Year Final Research Report
Multiphoton Images of fibrosis in vitreoretinal diseases using a SHG microscope.
| Project/Area Number |
22890231
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Ophthalmology
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| Research Institution | Fukuoka University |
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Principal Investigator |
SASSA Yukizo 福岡大学, 医学部, 助教 (80580315)
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| Project Period (FY) |
2010 – 2011
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| Keywords | コラーゲンリモデリング / 第2高調波発生光生体顕微鏡 / 網膜色素上皮細胞 / 増殖糖尿病網膜症 / 増殖硝子体網膜症 / 黄斑前膜 |
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| Research Abstract |
Multiphoton microscopy(MPM) can image tissue and cellularized collagen gels using endogenous second-harmonic generation(SHG) to provide unique information about collagen content and microstructure. We observed preretinal fibrovascular membranes, inner limiting membrane obtained from patients and retinal pigment epithelium(RPE) cultured collagen gels using a SHG microscope. SHG signals were detected from preretinal tissue obtained from patients with proliferative vitreoretinopathy(PVR), proliferative diabetic retinopathy(PDR) and idiopathic epiretinal membrane(iERM). We evaluated SHG signals as the area fraction and mean intensity. Mean SHG signal intensity of fibrovasucular membranes obtained from PDR patients had a trend to increase in the progress of fibrosis based on the fundus photographs. In 3D cultured collagen gel model, TGF beta2 stimulation significantly increased both SHG area fraction and mean SHG signal intensity compared to non-stimulant control. Since we can evaluate SHG signal changes without any fixation or staining, this cellularized collagen gel model may be useful to evaluate fibrosis in real time.
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[Journal Article] Bone marrow-derived monocyte lineage cells recruited by MIP-1β promote physiological revascularization in mouse model of oxygen-induced retinopathy2012
Author(s)
Ishikawa K, Yoshida S, Nakao S, Sassa Y, Asato R, Kohno R, Arima M, Kita T, Yoshida A, Ohuchida K, Ishibashi T.
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Journal Title
Lab Invest
Volume: 92
Pages: 91-101
Peer Reviewed
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[Journal Article] Increased expression of periostin in vitreous and fibrovascular membranes obtained from patients with proliferative diabetic retinopathy2011
Author(s)
Yoshida S, Ishikawa K, Asato R, Arima M, Sassa Y, Yoshida A, Yoshikawa H, Narukawa K, Obika S, Ono J, Ohta S, Izuhara K, Kono T, Ishibashi T.
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Journal Title
Invest Ophthalmol Vis Sci
Volume: 92
Pages: 5670-8
Peer Reviewed
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[Presentation] The significant relationship between Fibronectin, Tenascin-C and Periostin in the eyes of the patients with diabetic retinopathy2011
Author(s)
Yukio Sassa, Shigeo Yoshida, Keijiro Ishikawa, Ryo Asato, Mituru Arima, Yusuke Saeki, Risa Sato, Kazuhiro Harada, Katsunori Miyazaki, Hiroshi Enaida, Yuji Oshima, Toshihiro Kono
Organizer
The 4th Joint Meeting of Korea-China-Japan Ophthalmologists
Place of Presentation
ソウル,韓国
Year and Date
2011-11-05
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