Results 31 to 40 of about 596,019 (261)

The P wave dispersion—one pixel, one millisecond

Reviews in Cardiovascular Medicine, 2021
The electrophysiological activity of the heart is recorded and presented in form of electrocardiogram (ECG). In 1998 the concept of P wave dispersion as the risk factor for atrial fibrillation (AF) recurrence was introduced.
Jacek Zawadzki, Grzegorz Zawadzki, Jadwiga Radziejewska, Peter-Stephan Wolff, Agnieszka Sławuta, Jacek Gajek   +5 more
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Relationship Between ECG and Left Atrial Hemodynamics in Patients with Mitral Stenosis

Heart Views
Background: Electrocardiography (ECG) in patients with mitral stenosis (MS) reveals characteristic findings, including altered P-wave morphology, reflecting left atrial (LA) hemodynamic changes.
Mina Mohseni, Saeid Noroozi, Amin Mahdavi, Masoomeh Kahnoji, Arezoo Saberi, Khadije Mohammadi   +5 more
doaj   +1 more source

Effects of a magnetic field and initial stress on reflection of SV-waves at a free surface with voids under gravity

Journal of the Mechanical Behavior of Materials, 2018
The present study deals with the reflection of SV-waves at a free surface in the presence of magnetic field, initial stress, voids and gravity. When an SV-wave incident on the free surface of an elastic half space, two damped P-waves and an SV-wave are ...
Anya Augustine Igwebuike, Akhtar M.W., Abo-Dahab Syed Muhammad, Kaneez Hajra, Khan Aftab, Jahangir Adnan   +5 more
doaj   +1 more source

P wave dispersion and maximum P wave duration are independently associated with rapid renal function decline. [PDF]

PLoS ONE, 2012
The P wave parameters measured by 12-lead electrocardiogram (ECG) are commonly used as noninvasive tools to assess for left atrial enlargement. There are limited studies to evaluate whether P wave parameters are independently associated with decline in ...
Ho-Ming Su, Wei-Chung Tsai, Tsung-Hsien Lin, Po-Chao Hsu, Wen-Hsien Lee, Ming-Yen Lin, Szu-Chia Chen, Chee-Siong Lee, Wen-Chol Voon, Wen-Ter Lai, Sheng-Hsiung Sheu   +10 more
doaj   +1 more source

Unlocking the potential of cell‐permeable nanobodies for intracellular applications

FEBS Letters, EarlyView.
This review outlines current strategies for delivery of nanobodies into cells and highlights recent examples of functional applications. By addressing and manipulating intracellular targets, these molecules hold great potential for treating cancer, respiratory diseases and neurological disorders, making this a vibrant area of research in the biomedical
Mariona Gené‐Verdés, Luise Franz, Christian P.R. Hackenberger   +2 more
wiley   +1 more source

Extracellular matrix remodeling and immune reprogramming drive residual tumor progression of liver cancer after incomplete microwave ablation

Molecular Oncology, EarlyView.
Incomplete microwave ablation (iMWA) of liver cancer triggers a biphasic progression in residual tumors. At Day 3, the microenvironment is characterized by acute inflammatory responses and extracellular matrix (ECM) remodeling. By Day 14, a profound shift occurs toward oncogenic signal transduction and immunosuppression, marked by macrophage ...
Yu Liu, Yubei He, Nikolaus Berndt, Michael Mülleder, Kathrin Textoris‐Taube, Jing Guo, Matthias Stechele, Justus Ramtke, Shraga Nahum Goldberg, Lynn Jeanette Savic   +9 more
wiley   +1 more source

The Influence of Interatrial Conduction Disorders on Atrial Mechanical Function — Atrial Strain and Pulmonary Veins Reversal Flow in Patients with COVID-19

Reviews in Cardiovascular Medicine
Background: The physiological activation of the left atrium (LA) happens through the Bachmann bundle, which is crucial for the heart's proper functioning.
Jacek Zawadzki, Jacek Gajek, Grzegorz Zawadzki, Agnieszka Sławuta, Bartosz Kudliński   +4 more
doaj   +1 more source

P Wave Indices—Advancing Our Understanding of Atrial Fibrillation-Related Cardiovascular Outcomes

Frontiers in Cardiovascular Medicine, 2019
Atrial fibrillation (AF) is associated with an increased risk of ischemic stroke, heart failure, cognitive decline, dementia, myocardial infarction, sudden cardiac death (SCD), and all-cause death.
Lin Y. Chen, Elsayed Z. Soliman
doaj   +1 more source

Construction of sea surface current vectors using a single HF radar: A theoretical study

iScience, 2022
Summary: A technique called the stream and potential function method (SPFM) is presented to retrieve the sea surface current vector field from the radial-component measurements of only one high-frequency (HF) radar.
Junqiang Shi, Xueen Chen, Xue Li, Ping Chen, Qiuli Shao   +4 more
doaj   +1 more source