Results 71 to 80 of about 975,812 (179)

Controlling parasympathetic regulation of heart rate: a gatekeeperrole for RGS proteins in the sinoatrial node

Frontiers in Physiology, 2012
Neurotransmitters released from sympathetic and parasympathetic nerve terminals in the SAN exert their effects via G-protein-coupled receptors. Integration of these different G-protein signals within pacemaker cells of the sinoatrial node (SAN) is ...
Alexandra eMighiu, Scott Patrick Heximer
doaj   +1 more source

An age‐associated decline in the role of the sarcoplasmic reticulum and associated calcium‐handling proteins sets the pace for sinoatrial node function

The Journal of Physiology, EarlyView.
Abstract figure legend Stable, responsive pacemaking in the sinoatrial node is driven by the activity of the funny current (membrane clock), interplay of calcium cycling and release from the sarcoendoplasmic reticulum with depolarising sodium‐calcium exchange current (calcium clock). With increasing age, key proteins associated with calcium cycling are
Sandra A. Jones, Fiona S. Godbeer, Matthew K. Lancaster   +2 more
wiley   +1 more source

Platelet-bioengineered hiPSC-sEVs achieve targeted repair of fibrotic sinoatrial node in preclinical SND models

Nature Communications
Sinus node dysfunction, a prevalent arrhythmia in aging populations, is characterized by fibrosis and loss of pacemaker activity, necessitating pacemaker implantation. Current therapies fail to reverse the underlying pathology.
Hanfeng Liu, Yangxi Zeng, Wei Fan, Xi Lan, Can Liu, Yisong He, Zhaoting Li, Kewei Jia, Juyi Wan, Bin Liao   +9 more
doaj   +1 more source

Altered microRNA and mRNA profiles during heart failure in the human sinoatrial node

Scientific Reports, 2021
Heart failure (HF) is frequently accompanied with the sinoatrial node (SAN) dysfunction, which causes tachy-brady arrhythmias and increased mortality. MicroRNA (miR) alterations are associated with HF progression.
Ning Li, Esthela Artiga, Anuradha Kalyanasundaram, Brian J. Hansen, Amy Webb, Maciej Pietrzak, Brandon Biesiadecki, Bryan Whitson, Nahush A. Mokadam, Paul M. L. Janssen, John D. Hummel, Peter J. Mohler, Halina Dobrzynski, Vadim V. Fedorov   +13 more
doaj   +1 more source

Regional electrical differences and arrhythmia in the rat atria: Role of sympathetic nerve distribution and function

The Journal of Physiology, EarlyView.
Abstract figure legend Atrial fibrillation commonly develops in the left atrium and pulmonary veins (PVs), and can be triggered by sympathetic nerve activity. Here, we examined regional atrial differences in sympathetic nerve distribution and function in the rat.
James Saleeb‐Mousa, Manish Kalla, Neil Herring, Christopher O'Shea, Andrew M. Coney, Keith L. Brain, Andrew P. Holmes   +6 more
wiley   +1 more source

Temporary neonatal atrial pacing through the umbilical venous route: A novel technique

Annals of Pediatric Cardiology, 2011
Atrial pacing in the neonate is rarely done due to constraints of equipment, technical knowhow, and risk of complications. We describe a novel method of atrial pacing in the new born using equipment readily available in any intensive care unit.
Hiren N Doshi, Seema T Lokare
doaj   +1 more source

An explainable artificial intelligence approach for predicting cardiovascular outcomes using electronic health records.

PLOS Digital Health, 2022
Understanding the conditionally-dependent clinical variables that drive cardiovascular health outcomes is a major challenge for precision medicine.
Sergiusz Wesołowski, Gordon Lemmon, Edgar J Hernandez, Alex Henrie, Thomas A Miller, Derek Weyhrauch, Michael D Puchalski, Bruce E Bray, Rashmee U Shah, Vikrant G Deshmukh, Rebecca Delaney, H Joseph Yost, Karen Eilbeck, Martin Tristani-Firouzi, Mark Yandell   +14 more
doaj   +1 more source

Dyssynchrony without dysfunction: Left bundle branch block does not acutely reduce cardiac output

The Journal of Physiology, EarlyView.
Abstract figure legend Six electromechanical in silico heart models were simulated under healthy and pure acute left bundle branch block (LBBB) conditions. LBBB induced electrical dyssynchrony and increased left ventricular free wall strain, while the right and left ventricular ejection fraction remained relatively unchanged.
Carola Kruthoff, Jonathan Krauß, Jorge Sánchez, Tobias Gerach, Cristian Barrios Espinosa, Jan‐Erik Duhme, Axel Loewe   +6 more
wiley   +1 more source

Multitarget Drug Design for Cardiovascular Disease: Bridging Chemistry and Medicine

ChemMedChem, Volume 21, Issue 19, 14 October 2026.
Many pathophysiological pathways associated with cardiovascular diseases involve multiple drug targets. This article reviews recent advances in the development of pharmacological compounds capable of simultaneously modulating multiple mechanisms. Multitarget drugs offer a promising therapeutic approach for complex cardiovascular disorders, including ...
Gyuzel Y. Mitronova, Vladimir N. Belov, Constanze Schmidt, Stephan E. Lehnart   +3 more
wiley   +1 more source

Radiotherapy‐Induced Side Effects: Epidemiology, Pathogenesis, Prevention and Treatments

MedComm, Volume 7, Issue 10, October 2026.
Radiotherapy for malignancies frequently injures the organs’ systems through oxidative stress, fibrosis, inflammation, and vascular damage. This review systematically maps the epidemiology, pathogenesis, and emerging therapies to propose a mechanism‑network‑targeted framework for integrated, personalized care in radiation oncology.
Xiaowen Ma, Xiaoxuan Zhang, Pujun Zhao, Jiaxin Yang, Zhihao Li, Xiaoyang Han, Yixuan Wang, Zhenzhen Cui, Nian Liu, Min Li   +9 more
wiley   +1 more source