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Updated: Jul 1, 2025

Improved Rodent Model of Myocardial Ischemia and Reperfusion Injury
Published on: March 7, 2022
Circadian Influences on Myocardial Ischemia-Reperfusion Injury and Heart Failure
Tobias Eckle1,2, Júlia Bertazzo1, Tarak Nath Khatua3
1Department of Anesthesiology (T.E., J.B.), University of Colorado Anschutz Medical Campus, Aurora.
Abstract:
The impact of circadian rhythms on cardiovascular function and disease development is well established, with numerous studies in genetically modified animals emphasizing the circadian molecular clock's significance in the pathogenesis and pathophysiology of myocardial ischemia and heart failure progression. However, translational preclinical studies targeting the heart's circadian biology are just now emerging and are leading to the development of a novel field of medicine termed circadian medicine. In this review, we explore circadian molecular mechanisms and novel therapies, including (1) intense light, (2) small molecules modulating the circadian mechanism, and (3) chronotherapies such as cardiovascular drugs and meal timings. These promise significant clinical translation in circadian medicine for cardiovascular disease. (4) Additionally, we address the differential functioning of the circadian mechanism in males versus females, emphasizing the consideration of biological sex, gender, and aging in circadian therapies for cardiovascular disease.
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