2002 Fiscal Year Final Research Report Summary
Mechanism and treatment of diabetic retinopathy
| Project/Area Number |
13671851
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Ophthalmology
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| Research Institution | Jichi Medical School |
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Principal Investigator |
KAKEHASHI Akihiro Jichi Medical School, Ophthalmology, Associate Professor, 医学部, 助教授 (30296123)
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| Co-Investigator(Kenkyū-buntansha) |
KAWAKAMI Masanobu Jichi Medical School, Comprehensive Medicine I, Professor, 医学部, 教授 (40161286)
KOROKI Masatoshi Jichi Medical School, Comprehensive Medicine I, Associate Professor, 医学部, 助教授 (90215096)
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| Project Period (FY) |
2001 – 2002
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| Keywords | Diabetic retinopathy / Diabetic animal model / Diabetic melites / Sulfonylurea / Rubeotic glaucoma / Diabetic cataract / SDT rat / STZ rat |
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| Research Abstract |
1) A new diabetic retinopathy animal model: SDT rat
SDT rats are the first animal model with spontaneously-ocurring poliferative DR. SDT rats will be uesful for the study of the pathogenesis and the treatment of DR.
2) Mechanism of developing diabetic retinopathy
Egr-1: Expression of Egr-1 found in the retina during hyperglycemia suggests that Egr-1 may be related to progression of diabetic retinopathy.
OPN: Expression of OPN was found to increase in the retina during hyperglycemia, and from this result it is possible that OPN is related to the development of diabetic retinopathy.
3) Drugs targeting diabetic retinopathy
We demonstrated that gliclazide attenuated retinal leukostasis in the diabetic rat, whereas glibenclamide had no effect. This indicates that gliclazide may directly improve abnormalities in the retinal microcirculation besides plasma glucose level control. Therefore, treatment with gliclazide might be efficacious in preventing the development of diabetic retinopathy, compared with other sulfonylurea drugs.
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