Results 31 to 40 of about 58,493 (121)
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
Generation of a human embryonic stem cell line (WAe009-A-78) carrying homozygous TBX18 knockout
T-Box Transcription Factor 18 is a member of the T-box family, encoding TBX18 protein. As a transcriptional repressor, it related to developmental processes of a majority of tissues and organs and plays crucial part in the embryonic development of ...
Qi Xu+5 more
doaj
A case report of sinoatrial arrest caused by temporal lobe epilepsy in subclinical glioblastoma
Background Atrial fibrillation with symptomatic bradycardia, higher grade atrioventricular block, and sinus node disease are all common indications for permanent pacemaker implantation.
Jörg Reifart+4 more
doaj +1 more source
Atrial and Sinoatrial Node Development in the Zebrafish Heart
Proper development and function of the vertebrate heart is vital for embryonic and postnatal life. Many congenital heart defects in humans are associated with disruption of genes that direct the formation or maintenance of atrial and pacemaker ...
Kendall E. Martin, Joshua S. Waxman
doaj +1 more source
Calcium channels are essential for excitation-contraction coupling and pacemaker activity in cardiac myocytes. While L-type Ca2+ channels (LCC) have been extensively studied, functional roles of T-type channels (TCC) in native cardiac myocytes are still ...
Kyoichi Ono, Toshihiko Iijima
doaj
CaMKII in sinoatrial node physiology and dysfunction
The calcium and calmodulin dependent protein kinase II (CaMKII) is present in sinoatrial node (SAN) pacemaker cells and is required for physiological fight or flight SAN beating rate responses.
Yuejin eWu+2 more
doaj +1 more source
Metabolic syndrome remodels electrical activity of the sinoatrial node and produces arrhythmias in rats. [PDF]
In the last ten years, the incidences of metabolic syndrome and supraventricular arrhythmias have greatly increased. The metabolic syndrome is a cluster of alterations, which include obesity, hypertension, hypertriglyceridemia, glucose intolerance and ...
Alondra Albarado-Ibañez+4 more
doaj +1 more source
Value of peripheral nodes in controlling multilayer networks [PDF]
We analyze the controllability of a two-layer network, where driver nodes can be chosen randomly only from one layer. Each layer contains a scale-free network with directed links and the node dynamics depends on the incoming links from other nodes.
arxiv +1 more source
Acute Isolation of Cells from Murine Sino-atrial Node
The cardiac conduction system allows the synchronized propagation of electrical activity through heart muscle. This is initiated by the spontaneous activity of the specialized pacemaker cells of the sino-atrial node (SAN).
Qadeer Aziz+2 more
doaj +1 more source
Limit Cycle Oscillations in Pacemaker Cells [PDF]
In recent decades, several mathematical models describing the pacemaker activity of the rabbit sinoatrial node have been developed. We demonstrate that it is not possible to establish the existence, uniqueness, and stability of a limit cycle oscillation in those models. Instead we observe an infinite number of limit cycles.
arxiv