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The role of SMP30 in abdominal aortic aneurysm formation.

Research Project

Project/Area Number 17K16017
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Cardiovascular medicine
Research InstitutionFukushima Medical University

Principal Investigator

Watanabe Shunsuke  福島県立医科大学, 医学部, 助手 (50792579)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
KeywordsSMP30 / 腹部大動脈瘤 / Apolipoprotein E (ApoE) / 大動脈瘤 / 老化 / 加齢
Outline of Final Research Achievements

To elucidate the role of SMP30 in the development of abdominal aortic aneurysm (AAA), angiotensinII (AngII) was administered to wild type, SMP30 knockout, ApoE knockout mouse (ApoE-KO) and SMP30/ApoE double knockout mice (DKO). Maximum diameter of abdominal aorta was largest in DKO mice followed by ApoE-KO. Aortae were excised and cell senescence and apoptosis were visualized by SA-β-gal and TUNEL staining, respectively. SA-β-gal-positive cells were most seen in AngII-infused DKO followed by ApoE-KO, so were TUNEL-positive cells. Therefore, SMP30 may attenuate the development of AAA via its anti-aging and anti-apoptotic effect.

Academic Significance and Societal Importance of the Research Achievements

SMP30が抗老化作用、抗アポトーシス作用を介してAAAの形成を抑制することが明らかになった。ただし、AngIIの非存在下ではこれらの作用は見られなかったことからSMP30のこのような作用は、抗酸化作用を介しているのかもしれない。
本研究よりSMP30がAAAの予防/治療の標的になり得ることが示唆された。
今後益々高齢化が進むわが国においては、AAAの治療あるいは進行を遅らせる薬の開発は切実であるが、その基礎疾患である高血圧や動脈硬化に対する治療あるいは手術しかないのが現状である。その意味でもAAAそのものに対する治療につながる本研究の意義は大きいと考える。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2020-03-30  

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