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2019 Fiscal Year Final Research Report

Development of animal models, identification of the mechanisms, and experimental therapeutics for augmented blood pressure variability

Research Project

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Project/Area Number 17K09729
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Kidney internal medicine
Research InstitutionUniversity of Miyazaki

Principal Investigator

Kato Johji  宮崎大学, フロンティア科学総合研究センター, 教授 (20274780)

Co-Investigator(Kenkyū-buntansha) 桑迫 健二  宮崎大学, フロンティア科学実験総合センター, 准教授 (20381098)
Project Period (FY) 2017-04-01 – 2020-03-31
Keywords血圧変動性増大 / 動物モデル / レニン・アンジオテンシン系 / 交感神経系
Outline of Final Research Achievements

Because augmented blood pressure variability (BPV) is associated with cardiovascular and renal diseases, the present study was performed to develop animal model of augmented BPV. When infused continuously into rats, angiotensin II (Ang II) and noradrenalin (NA) increased 24h BPV in rats through AT1 and alpha-1 receptors, respectively. This finding suggests that persistent activation of the renin-angiotensin and sympathetic nervous systems increases BPV, and rats continuously infused with Ang II or NA can be used as models of augmented BPV for studying the pathophysiology and pharmacotherapy of augmented BPV.

Free Research Field

心血管内科学

Academic Significance and Societal Importance of the Research Achievements

血圧測定値の変動(動揺)が増大すると、心血管疾患リスクが上昇する。しかし、血圧変動性を小さくする治療が、疾患リスクを低下させるかは明らかでなく、有効な治療方法も明確ではない。これらの課題を解決するためには、血圧変動性増大の動物モデル実験系の開発が必要と考え、本研究を実施した。その結果、2種類のモデルを開発できたので、今後、有効な治療方法を見出す研究展開が可能となった。

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Published: 2021-02-19  

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