Project/Area Number |
23591036
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Circulatory organs internal medicine
|
Research Institution | Hamamatsu University School of Medicine |
Principal Investigator |
KATOH Hideki 浜松医科大学, 医学部, 助教 (80314029)
|
Co-Investigator(Kenkyū-buntansha) |
SATOH Hiroshi 浜松医科大学, 医学部付属病院, 講師 (30293632)
SAOTOME Masao 浜松医科大学, 医学部付属病院, 助教 (70509512)
HAYASHI Hideharu 浜松医科大学, 医学部, 教授 (50135258)
|
Project Period (FY) |
2011 – 2013
|
Project Status |
Completed (Fiscal Year 2013)
|
Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
|
Keywords | レニン / 糖尿病 / ミトコンドリア / 心筋虚血 / 虚血再灌流障害 / レニン / ミトコンドリア / 組織レニン、プロレニン |
Research Abstract |
In this study, we found that expression of intracellular renin increased both in cytosol and mitochondriaduring ischemia in diabetic heart, and that increased renin protects cardiomyocytes from ischemic injury. This protective effect of renin is due to the reduction of UCP and acceleration of electron transport chain, which resulted in the prevention of mitochondrial depolarization and preservation of ATP production under ischemic stress. The cardioprotective effect of renin is independent from subsequent intracellular angiotensin II production. These results indicated that in contrast to previously reported adverse effects of circulating RAS, cytosolic renin plays an important role to protect myocytes from ischemic stress in diabetic heart.
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