Conceptualizing myocardial contractility as an emergent property that characterizes myocardial contraction [PDF]
Frontiers in PhysiologyMyocardial contractility (MC) is a fundamental concept that is widely used to describe the cardiac muscles’ mechanical function, yet its definitions in textbooks and literature are vague, inconsistent, and often contradictory.
Serena Y. Kuang, Gorune Geloian
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Acetate suppresses myocardial contraction via the short-chain fatty acid receptor GPR43 [PDF]
Frontiers in Physiology, 2022 The heart has high energy requirements, with an estimated 40%–60% of myocardial ATP production derived from the oxidation of fatty acids under physiological conditions.
Xuan Jiang +10 more
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Speckle tracking echocardiography analyses of myocardial contraction efficiency predict response for cardiac resynchronization therapy [PDF]
Cardiovascular Ultrasound, 2018 Background In patients with left ventricular (LV) dysssynchrony, contraction that doesn’t fall into ejection period (LVEj) results in a waste of energy due to inappropriate contraction timing, which was now widely treated by cardiac resynchronization ...
Zibire Fulati +6 more
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Modulation of Myocardial Contraction by Peroxynitrite [PDF]
Frontiers in Physiology, 2012 Peroxynitrite is a potent oxidant that is quickly emerging as a crucial modulator of myocardial function. This review will focus on the regulation of myocardial contraction by peroxynitrite during health and disease, with a specific emphasis on ...
Mark eKohr +3 more
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Myocardial Contraction during the Diastolic Isovolumetric Period: Analysis of Longitudinal Strain by Means of Speckle Tracking Echocardiography [PDF]
Journal of Cardiovascular Development and Disease, 2018 Background: According to the ventricular myocardial band model, the diastolic isovolumetric period is a contraction phenomenon. Our objective was to employ speckle-tracking echocardiography (STE) to analyze myocardial deformation of the left ventricle ...
Vicente Mora +10 more
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Regulation of myocardial contraction as revealed by intracellular Ca2+ measurements using aequorin [PDF]
Journal of Physiological SciencesOf the ions involved in myocardial function, Ca2+ is the most important. Ca2+ is crucial to the process that allows myocardium to repeatedly contract and relax in a well-organized fashion; it is the process called excitation–contraction coupling.
Satoshi Kurihara, Norio Fukuda
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Left ventricle ejection fraction and strain derived by three-dimensional echocardiography are associated with exercise capacity in the patients with heart failure [PDF]
Vojnosanitetski Pregled, 2019 Background/Aim. Echocardiography represents the most commonly performed noninvasive cardiac imaging tests for the patients with heart failure (HF). The aim of this study was to assess the relationship between the exercise capacity parameters [peak oxygen
Pavlović-Kleut Milena +2 more
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Association between aortic stenosis severity and contractile reserve measured by two-dimensional strain under low-dose dobutamine testing [PDF]
Vojnosanitetski Pregled, 2013 Background/Aim. Early detection of left ventricle (LV) systolic dysfunction could be a clue for surgical treatment in patients with significant aortic stenosis (AS).
Banović Marko +5 more
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Journal of Medicine in Scientific Research, 2022 Background Prolonged myocardial contraction and QT interval duration may be found in ischemic viable myocardium, yet it is unclear if noninvasive examination of regional nonhomogeneous myocardial mechanics and QT duration may detect patients with ...
Mohamed R Badran
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Scientific Reports, 2021 Transverse-tubules (T-tubules) play pivotal roles in Ca2+-induced, Ca2+ release and excitation–contraction coupling in cardiomyocytes. The purpose of this study was to uncover mechanisms where sarco/endoplasmic reticulum Ca2+ ATPase (SERCA2a) improved ...
Shuai Wang +9 more
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