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2023 Fiscal Year Final Research Report

Role of hormonal action and clonal hematopoiesis in diabetic cardiomyopathy

Research Project

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Project/Area Number 21H02911
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 53020:Cardiology-related
Research InstitutionNagoya University

Principal Investigator

Murohara Toyoaki  名古屋大学, 医学系研究科, 教授 (90299503)

Co-Investigator(Kenkyū-buntansha) 坂東 泰子  三重大学, 医学系研究科, 教授 (60452190)
柴田 玲  名古屋大学, 医学系研究科, 特任教授 (70343689)
清水 優樹  名古屋大学, 医学系研究科, 助教 (90801887)
Project Period (FY) 2021-04-01 – 2024-03-31
Keywords2型糖尿病 / 心不全 / 毛細血管障害 / グルカゴン / インクレチン / 組織虚血 / 糖尿病性心筋症
Outline of Final Research Achievements

It has been noted that patients with type 2 diabetes mellitus frequently suffer from heart failure in addition to atherosclerotic vascular disease such as coronary artery disease. In this study, we examined how metabolic abnormalities associated with diabetes and diabetic capillary injuries are involved in the decline of cardiac function (i.e., diabetic cardiomyopathy). We focused on incretin, glucagon, and capillary and angiogenic functions. We obtained glucagon- and GLP-1-deficient mice, and our findings are now under submission for publication. We also examined whether the novel adipokines have anti-heart failure effects. In mice with myocardial ischemia, omentin showed myocardial protective effects (paper was published).

Free Research Field

循環器内科学

Academic Significance and Societal Importance of the Research Achievements

本研究では、糖尿病に伴い明らかな冠動脈疾患や既存の特発性心筋症が無いにも関わらず心機能が低下している病態、「糖尿病性心筋症」に関して、心筋毛細血管新生や代謝性心筋障害と、グルカゴン関連ペプチド、アディポカインなどの観点から、主に代謝性因子による関与を中心に検討した。また近年注目されている、クローン性造血と糖尿病、心不全の関連についても検討する。本研究により、糖尿病によって引き起こされる原因不明の心臓の収縮・拡張機能障害や、毛細血管障害による心機能障害のさらなる病態解明が進む。

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Published: 2025-01-30  

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