Results 91 to 100 of about 543,255 (155)

Cell cycle arrest of cardiomyocytes in the context of cardiac regeneration

Frontiers in Cardiovascular Medicine
The limited capacity of adult mammalian cardiomyocytes to undergo cell division and proliferation is one of the key factors contributing to heart failure.
Qingling Xu, Qingling Xu, Xinhui Chen, Chunyige Zhao, Ying Liu, Jianxun Wang, Xiang Ao, Xiang Ao, Wei Ding   +8 more
doaj   +1 more source

Deletion of HP1γ in cardiac myocytes affects H4K20me3 levels but does not impact cardiac growth

Epigenetics & Chromatin, 2018
Background Heterochromatin, which is formed when tri-methyl lysine 9 of histone H3 (H3K9me3) is bound by heterochromatin 1 proteins (HP1s), plays an important role in differentiation and senescence by silencing cell cycle genes.
Kyohei Oyama, Danny El-Nachef, Chen Fang, Hidemi Kajimoto, Jeremy P. Brown, Prim B. Singh, W. Robb MacLellan   +6 more
doaj   +1 more source

L-CO-Net: Learned Condensation-Optimization Network for Clinical Parameter Estimation from Cardiac Cine MRI [PDF]

arXiv, 2020
In this work, we implement a fully convolutional segmenter featuring both a learned group structure and a regularized weight-pruner to reduce the high computational cost in volumetric image segmentation. We validated our framework on the ACDC dataset featuring one healthy and four pathology groups imaged throughout the cardiac cycle.
arxiv  

Design and testing of an MRI-compatible cycle ergometer for non-invasive cardiac assessments during exercise

BioMedical Engineering OnLine, 2012
Background Magnetic resonance imaging (MRI) is an important tool for cardiac research, and it is frequently used for resting cardiac assessments. However, research into non-pharmacological stress cardiac evaluation is limited.
Gusso Silmara, Salvador Carlo, Hofman Paul, Cutfield Wayne, Baldi James C, Taberner Andrew, Nielsen Poul   +6 more
doaj   +1 more source

On the Einthoven Triangle: A Critical Analysis of the Single Rotating Dipole Hypothesis

Sensors, 2018
Since its inception, electrocardiography has been based on the simplifying hypothesis that cardinal limb leads form an equilateral triangle of which, at the center/centroid, the electrical equivalent of the cardiac activity rotates during the cardiac ...
Gaetano D. Gargiulo, Paolo Bifulco, Mario Cesarelli, Alistair L. McEwan, Hossein Moeinzadeh, Aiden O’Loughlin, Ibrahim M. Shugman, Jonathan C. Tapson, Aravinda Thiagalingam   +8 more
doaj   +1 more source

Cardiac cycle gated cognitive-emotional control in superior frontal cortices

NeuroImage, 2020
Accumulating evidence suggests that peripheral physiological processes, such as the cardiac cycle, impact the individual's ability to appropriately exert control over behavior and emotional responses.
Nico Adelhöfer, Marie Luise Schreiter, Christian Beste   +2 more
doaj  

Active sampling in visual search is coupled to the cardiac cycle [PDF]

, 2020
Recent research has demonstrated that perception and reasoning vary according to the phase of internal bodily signals such as heartbeat. This has been shown by locking the presentation of sensory events to distinct phases of the cardiac cycle.
Galvez-Pol, A, Kilner, JM, McConnell, R
core  

Measuring left ventricular volumes in two-dimensional echocardiography image sequence using level-set method for automatic detection of end-diastole and end-systole frames

Research in Cardiovascular Medicine, 2013
Background: Identifying End-Diastole (ED) and End-Systole (ES) frames is highly important in the process of evaluating cardiac function and measuring global parameters accurately, such as Ejection Fraction (EF), Cardiac Output (CO) and Stroke Volume ...
Saeed Darvishi, Hamid Behnam, Majid Pouladian, Niloufar Samiei   +3 more
doaj   +1 more source

Left Ventricular Entropy as a Measure of Wall Motion Abnormalities in Echocardiography Images [PDF]

Iranian Journal of Electrical and Electronic Engineering
Cardiovascular diseases (CVD) are today a major cause of death globally that is diagnosed by measurement and quantification of left ventricle (LV) wall motion (WM) abnormality of the heart.
Neda Gorji Kandi, Hamid Behnam, Ali Hosseinsabet   +2 more
doaj  

Cardiac Urea Cycle Activation by Time‐Restricted Feeding Protects Against Pressure Overload‐Induced Heart Failure

Advanced Science
Heart failure is a leading cause of mortality worldwide, necessitating the development of novel therapeutic and lifestyle interventions. Recent studies highlight a potential role of time‐restricted feeding (TRF) in the prevention and treatment of cardiac
Yanzhen Tan, Min Li, Han Li, Yongzheng Guo, Bing Zhang, Guiling Wu, Jia Li, Qian Zhang, Yang Sun, Feng Gao, Wei Yi, Xing Zhang   +11 more
doaj   +1 more source