| Project/Area Number |
13671101
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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 |
Kidney internal medicine
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| Research Institution | The University of Tokyo |
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Principal Investigator |
SEKINE Takashi The University of Tokyo, Faculty of Medicine, Lecturer, 医学部附属病院, 講師 (50255402)
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| Co-Investigator(Kenkyū-buntansha) |
KOMODA Fusako The University of Tokyo, Faculty of Medicine, research associate, 医学部附属病院, 助手 (50107603)
IGARASHI Takashi The University of Tokyo, Faculty of Medicine, Professor, 医学部附属病院, 教授 (70151256)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2002: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2001: ¥2,200,000 (Direct Cost: ¥2,200,000)
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| Keywords | urolithiasis / human uric acid transporter 1 / chrolide channel 5 / epithelial calcium channel / genetic analsysis |
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| Research Abstract |
In this project, we performed the following three investigations related to urolithiasis.
(1) Genetic analysis of ECaC1 (epithelial calcium channnel 1) gene in patients with idiopathic hypercalciuria
(2) Genetic analysis of hURAT1 (human uirnc acid transporter 1) gene in patients with hereditary hypouricemia
(3) Genecitc analysis of CLCN5 (chloride channel 5) in patients with Dent's disease.
During 2 years of investigation, we could obtain the following results :
(1) We could not detect any mutations in ECaC1 gene in patiesnts with idiopathic hypercalciuria who developed urolithiasis during infancy.
(2) We performed genecic analyzes in 7 unrelated Japanese families with renal hypouricemia. We identified hURAT1 mutations in 6 families ; in five families, W258X mutation was detected. This result indicates that W258X mutation is the predominant genetic cause in Japanese patients with renal hypouricemia.
(3) We performed CLCN5 gene analysis in more than 15 families with Dent's disease, and identified several mutations.
Now, we continue to perform genetic analysis of CLCN5 and hURAT1. The present results added certain knowledge on the genetic backgrounds of urolithiasis.
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