T-Tubular Electrical Defects Contribute to Blunted β-Adrenergic Response in Heart Failure

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T-Tubular Electrical Defects Contribute to Blunted β-Adrenergic Response in Heart Failure

Alterations of the β-adrenergic signalling, structural remodelling, and electrical failure of T-tubules are hallmarks of heart failure (HF). Here, we assess the effect of β-adrenoceptor activation on local Ca(2+) release in electrically coupled and uncoupled T-tubules in ventricular myocytes from HF rats. We employ an ultrafast random access multi-photon (RAMP) microscope to simultaneously reco...

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INTRODUCTION Congestive heart failure (CHF) is a major public health problem. Nearly 5 million Americans are afflicted with CHF and about 550,000 new cases are diagnosed each year (1). CHF is a pathophysiological condition in which the heart is unable to pump enough blood to meet the metabolic needs of the body. It is the endpoint for several cardiovascular diseases including coronary artery di...

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Sudden cardiac death is the most common and often first manifestation of atherosclerotic heart disease and is responsible for approximately 50% of the mortality from cardiovascular disease in the developed world. In the United States, 300,000 to 400,000 deaths annually are attributable to sudden cardiac death. This amounts to an overall incidence in the adult population of .1 .2 % per year. In ...

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Division of Cardiovascular Medicine, Dept of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA; Shanghai First People’s Hospital, Shanghai Jiaotong University, Shanghai, China; Division of Cardiovascular Surgery, Mayo Clinic, Rochester, MN; Dept of Pharmacology, College of Basic Medicine, Anhui Medical University, Hefei, China; Dept of Physiology & Biophysics, Univ...

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ژورنال

عنوان ژورنال: International Journal of Molecular Sciences

سال: 2016

ISSN: 1422-0067

DOI: 10.3390/ijms17091471