| Project/Area Number |
16390246
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Kidney internal medicine
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| Research Institution | Kumamoto University |
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Principal Investigator |
TOMITA Kimio Kumamoto University, Graduate School, Nephrology, Professor, 大学院・医学薬学研究部, 教授 (40114772)
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| Co-Investigator(Kenkyū-buntansha) |
KITAMURA Ken-ichiro Kumamoto University, Graduate School, Nephrology, Assistant Professor, 大学院・医学薬学研究部, 助手 (10304990)
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| Project Period (FY) |
2004 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥13,700,000 (Direct Cost: ¥13,700,000)
Fiscal Year 2005: ¥6,900,000 (Direct Cost: ¥6,900,000)
Fiscal Year 2004: ¥6,800,000 (Direct Cost: ¥6,800,000)
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| Keywords | Na channel / hypertension / serine protease / antibody / kidney |
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| Research Abstract |
Sodium regulation in the kidney is one of the most important factors for the regulation of blood pressure. Epithelial sodium channel is key protein in the regulation of Na balance. We reported that a new serine protease prostasin can activate epithelial sodium channel in cultured cells. Prostasin was stimulated by aldosterone in vitro and in vivo experiments. In human, urinary prostasin excretion was elevated in primary aldosteronism, suggesting that prostasin may have significant roles in the regulation of blood pressure. Therefore, we have investigated to elucidate the roles of prostasin in the regulation of blood pressure by use of antibody against prostasin. At first, we have isolated several antibody against prostasin. We have already isolated one clones which inhibited prostasin activity. In addition, this antibody showed significant relation between urinary aldosterone excretion and urinary prostasin excretion in human samples.
This projects is now underway. We must continue further experiments.
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