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2020 Fiscal Year Final Research Report

cardiac damage from catecholamine and restraint stress affects microRNA expression in heart

Research Project

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Project/Area Number 17K15885
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Legal medicine
Research InstitutionNational Defense Medical College

Principal Investigator

Hosoya Tadashi  防衛医科大学校(医学教育部医学科進学課程及び専門課程、動物実験施設、共同利用研究施設、病院並びに防衛, 法医学, 助教 (40782529)

Project Period (FY) 2017-04-01 – 2021-03-31
KeywordsmicroRNA / 心筋障害 / カテコールアミン / 拘束性ストレス / 動物実験
Outline of Final Research Achievements

In the hearts of restraint-stressed rats, miR-128 and miR-338 expression level was decreased. There was no synergistic effect to miR expression levels of β2 stimulation and restraint stress. Although there were no histological changes, blood troponin-I concentration was elevated. These miRs may be an indicator of myocardial necrosis that cannot be identified by microscopic examination.

Free Research Field

法医学

Academic Significance and Societal Importance of the Research Achievements

光学顕微鏡での心筋壊死所見はなかったがトロポニンIの上昇があるという、発症1時間程度の超早期心筋壊死を再現した状態で、心臓内miR-27・miR-132等の変動をみとめたことから、心筋壊死の客観的指標となる可能性がある。
また拘束性ストレス単独で変動のあるmiR-128とmiR-338が見つかったことから、拘束性ストレスを受けたかどうかの指標となる可能性がある。

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Published: 2022-01-27  

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