Results 61 to 70 of about 20,476 (227)

Influence of autonomic nervous system in the inducibility of atrial fibrillation. [PDF]

open access: yes, 2008
Cílem této práce je zjištění změn předcházejícím fibrilaci síní. Pozorována je rovnováha mezi sympatikem a parasympatikem. Do experimentu výzkumného ústavu Cleavlendské kliniky bylo zapojeno šest psů různých ras.
Šrutová, Martina
core  

Selective sinoatrial node optical mapping and the mechanism of sinus rate acceleration [PDF]

open access: yes, 2012
BACKGROUND: Studies using isolated sinoatrial node (SAN) cells indicate that rhythmic spontaneous sarcoplasmic reticulum calcium release (Ca clock) plays an important role in SAN automaticity.
Chen, Peng-Sheng   +8 more
core   +1 more source

The cardiac pacemakers: A paradigm of robustness in evolutionary biology

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Functional networks in living systems are formed by many thousands of gene products. In association with those networks, several genes (four in this diagram) may be sufficient, each on its own, to ensure that the function occurs. Any one of these may be removed or blocked while leaving the others to continue functioning.
Denis Noble
wiley   +1 more source

Natriuretic Peptide Receptor-C Protects Against Angiotensin II-Mediated Sinoatrial Node Disease in Mice

open access: yesJACC: Basic to Translational Science, 2018
Summary: Sinoatrial node (SAN) disease mechanisms are poorly understood, and therapeutic options are limited. Natriuretic peptide(s) (NP) are cardioprotective hormones whose effects can be mediated partly by the NP receptor C (NPR-C). We investigated the
Martin Mackasey, BSc   +12 more
doaj   +1 more source

Cardiac remodelling in type 2 diabetes: Pathophysiological mechanisms and opportunities for multiscale computational modelling and simulation

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Overview of multiscale cardiac remodelling in type 2 diabetes and how to model and simulate these changes using a human‐based, multiscale computational framework. Cardiac remodelling in type 2 diabetes occurs at ionic channel, protein, cellular, tissue and whole‐organ level, affecting the electrophysiological function, mechanical
Ambre Bertrand   +2 more
wiley   +1 more source

Sinoatrial nodal disease presenting with tachy-bradycardia syndrome in a fetus of anti-SSA/SSB-positive mother

open access: yesAnnals of Pediatric Cardiology, 2022
Tachy-bradycardia syndrome (TBS) has been reported rarely in the fetus. We present here an unusual dominant involvement of sinoatrial node in a fetus presenting with TBS of anti-Sjögren'syndrome-related antigen A (SS-A) and antigen B (SS-B ...
Balaganesh Karmegaraj
doaj   +1 more source

Slow invariant manifold of heartbeat model [PDF]

open access: yes, 2014
A new approach called Flow Curvature Method has been recently developed in a book entitled Differential Geometry Applied to Dynamical Systems. It consists in considering the trajectory curve, integral of any n-dimensional dynamical system as a curve in ...
Ginoux, Jean-Marc, Rossetto, Bruno
core  

The morphologic development of the sinoatrial node in the mouse

open access: yesThe American Journal of Cardiology, 1970
Abstract A plastic embedding technique was employed on mouse embryos after fixation with a gluteraldehyde-paraformaldehyde mixture and preparation of large, 1 to 2 μ sections cut on a rotary microtome with steel knives. It was then possible to trace the sinoatrial node back to mouse embryos of 4 sol1 2 mm crown-rump length ( 10 1 2 days
Departments of Pediatrics (Cardiology) and Pathology, University of Florida College of Medicine, Gainesville, Fla. 32601 USA ( host institution )   +2 more
openaire   +3 more sources

Sympathetic stimulation can compensate for hypocalcaemia‐induced bradycardia in human and rabbit sinoatrial node cells

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend AC: adenylyl cyclase, APT: adenosine triphosphate, AMP: adenosine monophosphate, cAMP: cyclic adenosine monophosphate, PDE: phosphodiesterase, PKA: protein kinase A, PPT: protein phosphatase, P: phosphorylation, RyR: ryanodine receptor, SERCA: sarcoplasmic/endoplasmic reticulum Ca2+‐adenosine triphosphatase, SR: sarcoplasmic ...
Moritz Linder   +4 more
wiley   +1 more source

Digital Technologies in Providing Development of Algorithms Surgical Treatment of Supraventricular Arrhythmias [PDF]

open access: yes, 2006
The aim of the study was the development and clinical application of patient selection algorithm for surgical treatment of longlasting persistent atrial fibrillation. The study included 235 patients with acquired heart disease and coronary artery disease,
Melo   +24 more
core   +3 more sources

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