2013 Fiscal Year Final Research Report
Investigation of pathogenesis of albuminuria in chronic kidney disease and its association with cardiovascular complications
| Project/Area Number |
23591209
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Kidney internal medicine
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| Research Institution | Kawasaki Medical School |
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Principal Investigator |
KOMAI Norio 川崎医科大学, 医学部, 准教授 (40368626)
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| Co-Investigator(Kenkyū-buntansha) |
KASHIHARA Naoki 川崎医科大学, 医学部, 教授 (10233701)
SATOH Minoru 川崎医科大学, 医学部, 講師 (70449891)
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| Project Period (FY) |
2011 – 2013
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| Keywords | アルブミン尿 / 内皮障害 / 一酸化窒素 / 慢性腎臓病 |
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| Research Abstract |
Albuminuria is an independent risk marker for development of cardiovascular disease. We hypothesized that albuminuria could be caused by glomerular endothelial injuries/dysfunctions. We have successfully developed the novel in vivo-imaging technique by which we can visualize microcirculation and filtration status by using 2-phton lasermicroscopy. We found that in diabetes, endothelial nitric oxide synthase (eNOS) produces superoxide anion rather than nitric oxide, referred to as "eNOS uncoupling," which contributes to endothelial dysfunction, albuminuria, and diabetic nephropathy. Reduced levels of endothelium-derived tetrahydrobiopterin (BH4), an essential cofactor for eNOS, promote eNOS uncoupling. We also demonstrated that renin-angiotensin system is deeply associated with generation of oxidative stress through activation of NADPH-oxidase. We have elucidated that maintenance of endothelial integrity ameliorates diabetic nephropathy.
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Research Products
(34 results)
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[Presentation] Preservation of Endothelial GTP Cyclohydrolase I Activity and Improvement of Renal Nitric Oxide Availability Prevent the Development of Diabetic Nephropathy2012
Author(s)
Kidokoro K,Satoh M,Nagasu H, Nishi Y, Ihoriya C, Kadoya H, Yada T,keith M Channon,Sasaki T,Kashihara N
Organizer
49th ERA-EDTA Congress
Place of Presentation
Le Palais des Congres de Paris(Paris,France)
Year and Date
2012-05-25
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