Results 71 to 80 of about 5,647,260 (394)
Differential Effects of Vagal Activation on the Sinus and Atrioventricular Nodes
JACC: Case Reports, 2020 Vagal activation usually affects both sinus and atrioventricular (AV) nodes, manifesting as sinus slowing accompanied by varying degrees of AV block. AV block accompanying sinus acceleration as during treadmill testing is usually considered pathologic ...
Lauren D. Suggs, MD +2 more
doaj +1 more source
Glimepiride, a novel sulfonylurea, does not abolish myocardial protection afforded by either ischemic preconditioning or diazoxide [PDF]
, 2001 Background: The sulfonylurea glibenclamide (Glib) abolishes the cardioprotective effect of ischemic preconditioning (IP), presumably by inhibiting mitochondrial KATP channel opening in myocytes. Glimepiride (Glim) is a new sulfonylurea reported to affect
Baxter, G.F. +5 more
core
A Distance Map Regularized CNN for Cardiac Cine MR Image Segmentation
, 2019 Cardiac image segmentation is a critical process for generating personalized models of the heart and for quantifying cardiac performance parameters. Several convolutional neural network (CNN) architectures have been proposed to segment the heart chambers
Dangi, Shusil +2 more
core +1 more source
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
Sinus of Valsalva Aneurysm Dissecting into Interventricular Septum Compressing RVOT [PDF]
Journal of Clinical and Diagnostic Research, 2018 Aneurysm of sinus of valsalva is a rare disorder. Rupture of sinus of valsalva into the right atria, right ventricle and the left ventricle is more commonly seen.
Nishu Raj +3 more
doaj +1 more source
Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions
FEBS Letters, EarlyView.We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva +10 more
wiley +1 more source
Progressive familial heart block, two types [PDF]
, 1977 CITATION: Brink A. J. & Torrington, M. 1977. Progressive familial heart block, two types. South African Medical Journal, 52(2):53-59.The original publication is available at http://www.samj.org.zaTwo types of heart block which occur extensively in ...
Brink A. J., Torrington, M.
core
Permanent complete heart block following surgical correction of congenital heart disease.
Ghana Medical Journal, 2011 BACKGROUND The risk of complete heart block (CHB) from congenital heart repairs in Ghana is unknown. This information is important for referring physicians and in pre-operative counselling of patients and facilitates the process of obtaining informed ...
F. Edwin +7 more
semanticscholar +1 more source
Molecular Oncology, EarlyView.This study indicates that Merkel cell carcinoma (MCC) does not originate from Merkel cells, and identifies gene, protein & cellular expression of immune‐linked and neuroendocrine markers in primary and metastatic Merkel cell carcinoma (MCC) tumor samples, linked to Merkel cell polyomavirus (MCPyV) status, with enrichment of B‐cell and other immune cell
Richie Jeremian +10 more
wiley +1 more source
Stable Atrial Sensing on Long-Term Follow Up of VDD Pacemakers [PDF]
, 2006 Background: The hemodynamic advantages of maintaining AV synchrony through AV synchronous pacing are widely known as compared to single chamber pacing.
Aithal, Jairam +3 more
core +2 more sources