Results 1 to 10 of about 81,823 (193)

Acetate suppresses myocardial contraction via the short-chain fatty acid receptor GPR43 [PDF]

open access: yesFrontiers 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
doaj   +2 more sources

Speckle tracking echocardiography analyses of myocardial contraction efficiency predict response for cardiac resynchronization therapy [PDF]

open access: yesCardiovascular 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
doaj   +2 more sources

Left ventricle ejection fraction and strain derived by three-dimensional echocardiography are associated with exercise capacity in the patients with heart failure [PDF]

open access: yesVojnosanitetski 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
doaj   +1 more source

Association between aortic stenosis severity and contractile reserve measured by two-dimensional strain under low-dose dobutamine testing [PDF]

open access: yesVojnosanitetski 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
doaj   +1 more source

The role of myocardial mechanical and QTc dispersion in detecting significant coronary artery disease

open access: yesJournal 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
doaj   +1 more source

SERCA2a ameliorates cardiomyocyte T-tubule remodeling via the calpain/JPH2 pathway to improve cardiac function in myocardial ischemia/reperfusion mice

open access: yesScientific 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
doaj   +1 more source

The impact of myocardial compressibility on organ-level simulations of the normal and infarcted heart

open access: yesScientific Reports, 2021
Myocardial infarction (MI) rapidly impairs cardiac contractile function and instigates maladaptive remodeling leading to heart failure. Patient-specific models are a maturing technology for developing and determining therapeutic modalities for MI that ...
Hao Liu   +10 more
doaj   +1 more source

Cell-free cryopreserved biological agents for cardiac protection in autoimmune myocarditis: A morphofunctional animal model study [PDF]

open access: yesScripta Medica
Background/Aim: Autoimmune myocarditis (AIM) is a condition characterised by inflammation of the heart muscle, which can lead to heart failure. The development of effective treatments is crucial for improving cardiac function and recovery.
Hladkykh Fedir V.   +2 more
doaj   +1 more source

Stunned myocardium [PDF]

open access: yesVojnosanitetski Pregled, 2005
Background. Stunned myocardium is a state of delayed recovery of regional contractility after a transient period of ischemia followed by reperfusion. Case report.
Ristić Anđelka   +3 more
doaj   +1 more source

A comparative study of embedded and anesthetized zebrafish in vivo on myocardiac calcium oscillation and heart muscle contraction

open access: yesFrontiers in Pharmacology, 2010
The zebrafish (Danio rerio) has been used as a model for studying vertebrate development in the cardiovascular system. In order to monitor heart contraction and cytosolic calcium oscillations, fish were either embedded in methylcellulose or anesthetized
Brian eMuntean   +6 more
doaj   +1 more source

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