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2018 Fiscal Year Final Research Report

The pathogenesis of sarcopenia induced by abnormal lipid metabolism in chronic kidney disease

Research Project

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Project/Area Number 17K19910
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Health science and related fields
Research InstitutionThe University of Tokushima

Principal Investigator

MASUDA Masashi  徳島大学, 大学院医歯薬学研究部(医学域), 助教 (50754488)

Co-Investigator(Kenkyū-buntansha) 竹谷 豊  徳島大学, 大学院医歯薬学研究部(医学域), 教授 (30263825)
Research Collaborator NIIDA yuki  
Project Period (FY) 2017-06-30 – 2019-03-31
Keywords脂質代謝異常
Outline of Final Research Achievements

In this study, we investigated the pathogenesis of muscle atrophy in chronic kidney disease. First, we found out that CKD model rats had decreased stearoyl-CoA desaturase (SCD) gene expression in muscle gastrocnemius. Next, the treatment CKD model mice with unsaturated fatty acids, oleate, exhibited slight improvements of impaired grip strength in CKD rats. In addition, oleate ameliorated upregulation of muscle atrophy relative genes expression and autophagy impairment induced by SCD inhibitor. Taken together, these results suggested that abnormal lipid metabolism in myocyte may provoke muscle atrophy through autophagy impairment in CKD.

Free Research Field

慢性腎臓病

Academic Significance and Societal Importance of the Research Achievements

慢性腎臓病(CKD)が悪化して発症する筋萎縮に関する基礎研究の実験系は確立されておらず、発症メカニズム等を理解するために必要な基礎的なデータが圧倒的に足りないのが現状である。しかしながら、本研究成果からCKDの骨格筋で起きる脂質代謝異常がオートファジー障害等の筋分解機構を亢進して筋萎縮を誘発する可能性が示唆されたことは、発展途上の筋萎縮研究分野の大きな飛躍の第一歩となると確信している。また、世界的に急速に高齢化を迎える中、健康寿命の延伸は喫緊の課題であるため、老化に伴う筋萎縮発症機序の新しい発見にもつながれば、現代人や次の世代の人々が抱える大きな問題解決に貢献できる可能性がある。

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Published: 2020-03-30  

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