Mechanistic insights into very slow conduction in branching cardiac tissue: a model study.

abstract：:Genome-wide association studies have uncovered over a 100 genetic loci associated with atrial fibrillation (AF), the most common arrhythmia. Many of the top AF-associated loci harbor key cardiac transcription factors, including PITX2, TBX5, PRRX1, and ZFHX3. Moreover, the vast majority of the AF-associated variants li...

journal_title：Circulation research

authors： van Ouwerkerk AF,Hall AW,Kadow ZA,Lazarevic S,Reyat JS,Tucker NR,Nadadur RD,Bosada FM,Bianchi V,Ellinor PT,Fabritz L,Martin JF,de Laat W,Kirchhof P,Moskowitz IP,Christoffels VM

更新日期：2020-06-19 00:00:00

abstract：:Excitation-contraction coupling in the cardiac myocyte is mediated by a number of highly integrated mechanisms of intracellular Ca²(+) transport. The complexity and integrative nature of heart cell electrophysiology and Ca²(+) cycling has led to an evolution of computational models that have played a crucial role in s...

journal_title：Circulation research

authors： Greenstein JL,Winslow RL

更新日期：2011-01-07 00:00:00

abstract：:Cells with endothelial phenotype generated from adult peripheral blood have emerging diagnostic and therapeutic potential. This study examined the lineage relationship between, and angiogenic function of, early endothelial progenitor cells (EPCs) and late outgrowth endothelial cells (OECs) in culture. Culture conditio...

journal_title：Circulation research

authors： Gulati R,Jevremovic D,Peterson TE,Chatterjee S,Shah V,Vile RG,Simari RD

更新日期：2003-11-28 00:00:00

abstract：RATIONALE:Protein kinase (PK)C-induced phosphorylation of cardiac troponin (cTn)I has been shown to regulate cardiac contraction. OBJECTIVE:Characterize functional effects of increased PKC-induced cTnI phosphorylation and identify underlying mechanisms using a transgenic mouse model (cTnI(PKC-P)) expressing mutant cTn...

journal_title：Circulation research

authors： Kirk JA,MacGowan GA,Evans C,Smith SH,Warren CM,Mamidi R,Chandra M,Stewart AF,Solaro RJ,Shroff SG

更新日期：2009-12-04 00:00:00

abstract：:Volume expansion has been shown to increase plasma atrial natriuretic peptide (ANP) levels, but the precise role of paracrine and autocrine factors in stretch-induced cardiac hormone release is not clear. In the present study, we report the effects of endothelin (ET) and angiotensin receptor (AT receptor) antagonists ...

journal_title：Circulation research

authors： Leskinen H,Vuolteenaho O,Ruskoaho H

更新日期：1997-01-01 00:00:00

abstract：:It is well known that electrical pacing may either terminate or change the rate and/or ECG appearance of reentrant ventricular tachycardia. However, the dynamics of interaction of reentrant waves with waves initiated by external pacing are poorly understood. Prevailing concepts are based on simplistic models in which ...

journal_title：Circulation research

authors： Davidenko JM,Salomonsz R,Pertsov AM,Baxter WT,Jalife J

更新日期：1995-12-01 00:00:00

abstract：:Extracellular ATP plays an important role in the regulation of prostacyclin and nitric oxide release from vascular endothelial cells. These cellular responses to ATP are generally attributed to the stimulation of the P2y subtype of P2 purinergic receptors. However, it has recently been suggested that two types of ATP ...

journal_title：Circulation research

authors： Motte S,Pirotton S,Boeynaems JM

更新日期：1993-03-01 00:00:00

abstract：:The isolated rat heart perfused with washed platelets was used as a model to examine platelet-vessel wall interactions. Release of prostacyclin and thromboxane A2 was measured, using a cascade of smooth muscle bioassay tissues or radioimmunoassays of the stable hydration products. In hearts perfused with rabbit or hum...

journal_title：Circulation research

authors： Purchase M,Dusting GJ,Li DM,Read MA

更新日期：1986-01-01 00:00:00

abstract：:To determine whether nifedipine, a calcium antagonist, protects ischemic myocardium, conscious dogs were subjected to coronary occlusion and given nifedipine by intravenous infusion beginning 30 minutes after the onset of ischemia and lasting for 24 hours while systemic arterial pressure, left atrial pressure, and car...

journal_title：Circulation research

authors： Henry PD,Shuchleib R,Borda LJ,Roberts R,Williamson JR,Sobel BE

更新日期：1978-09-01 00:00:00

abstract：RATIONALE:Although the health effects of beta carotene have been studied extensively, a systematic examination of serum concentrations and long-term mortality, including cardiovascular disease mortality, has not been reported. OBJECTIVE:Explore whether serum beta carotene is associated with overall and cause-specific ...

journal_title：Circulation research

authors： Huang J,Weinstein SJ,Yu K,Männistö S,Albanes D

更新日期：2018-12-07 00:00:00

abstract：:Human peripheral blood leukocytes, activated by phorbol myristate acetate, disrupt canine sarcoplasmic reticulum calcium transport, in vitro, by an oxygen-derived free radical mechanism. Activated leukocytes significantly depress Ca++ uptake activity and Ca++ -stimulated, Mg++ -dependent ATPase activity. The depressio...

journal_title：Circulation research

authors： Rowe GT,Manson NH,Caplan M,Hess ML

更新日期：1983-11-01 00:00:00

abstract：:Experimental and clinical studies have suggested an increased production of reactive oxygen species (ROS) in the failing myocardium. The present study aimed to obtain direct evidence for increased ROS and to determine the contribution of superoxide anion (*O(2)(-)), H(2)O(2), and hydroxy radical (*OH) in failing myoca...

journal_title：Circulation research

authors： Ide T,Tsutsui H,Kinugawa S,Suematsu N,Hayashidani S,Ichikawa K,Utsumi H,Machida Y,Egashira K,Takeshita A

更新日期：2000-02-04 00:00:00

abstract：:The solid angle theory has long been applied to the interpretation of the ECG; however, quantitative evaluation of its applicability has been minimal. We applied solid angle analysis to the interpretation of the TQ-ST deflection during acute ischemia. Five anesthetized pigs were studied 1--3 hours after coronary occlu...

journal_title：Circulation research

authors： Richeson JF,Akiyama T,Schenk E

更新日期：1978-12-01 00:00:00

abstract：:We studied the pulmonary vascular effects of prostacylin, PGI2, in the cat with intact chest under conditions of controlled blood flow. Intralobar injections of PGI2, 0.03--1 microgram, decreased arterial pressure in the perfused lobe in a dose-dependent manner. Inasmuch as lobar blood flow was held constant and left ...

journal_title：Circulation research

authors： Hyman AL,Kadowitz PJ

更新日期：1979-09-01 00:00:00

abstract：:Previously, it was shown that the D enantiomer of isoidide dinitrate was 10-fold more potent than the L enantiomer and 10-fold less potent than glyceryl trinitrate for stimulating cyclic GMP accumulation and relaxation of isolated rat aorta. In the present study, these organic nitrates were tested for their ability to...

journal_title：Circulation research

authors： Bennett BM,Schröder H,Hayward LD,Waldman SA,Murad F

更新日期：1988-10-01 00:00:00

abstract：:Fibroblast growth factor-1 (FGF-1), a prototype member of the heparin-binding growth factor family, is a potent mitogen for vascular endothelial cells and a variety of other cell types. FGF-1 can induce the expression of the platelet-derived growth factor-A chain (PDGF-A) gene in endothelial cells; however, the underl...

journal_title：Circulation research

authors： Delbridge GJ,Khachigian LM

更新日期：1997-08-01 00:00:00

abstract：:Morphometric data from stable (nonedematous) isolated dog lungs, perfused with nearly cell-free perfusates, were compared to similar stereological evaluations of isolated dog lungs after induction of severe acute hydrostatic edema. In the edematous lungs, capillary surface and volume densities were substantially incre...

journal_title：Circulation research

authors： DeFouw DO,Berendsen PB

更新日期：1978-07-01 00:00:00

abstract：RATIONALE:Mitochondrial dysfunction plays an important role in heart failure (HF). However, the molecular mechanisms regulating mitochondrial functions via selective mitochondrial autophagy (mitophagy) are poorly understood. OBJECTIVE:We sought to determine the role of AMPK (AMP-activated protein kinase) in selective ...

journal_title：Circulation research

authors： Wang B,Nie J,Wu L,Hu Y,Wen Z,Dong L,Zou MH,Chen C,Wang DW

更新日期：2018-03-02 00:00:00

abstract：:Cation channels activated by Ca(2+) store depletion have been proposed to mediate Ca(2+) influx in vascular smooth muscle cells. The aim of this study was to determine if store-operated channels have a functional role in pulmonary artery smooth muscle cells (PASMCs). In intact rat pulmonary artery rings, cyclopiazonic...

journal_title：Circulation research

authors： Ng LC,Gurney AM

更新日期：2001-11-09 00:00:00

abstract：:Lipopolysaccharide (LPS) causes endothelial cell injury both in vitro and in vivo. It is widely believed that this injury in vivo enhances the transport of macromolecules from plasma into the interstitial space of the underlying artery wall. A new technique was used in rats to obtain high resolution transmural profile...

journal_title：Circulation research

authors： Penn MS,Chisolm GM

更新日期：1991-05-01 00:00:00

abstract：RATIONALE:Although tyrosine kinases (TKs) are important for cardiac function, their relevant downstream targets in the adult heart are unknown. The ShcA docking protein binds specific phosphotyrosine (pTyr) sites on activated TKs through its N-terminal pTyr-binding (PTB) and C-terminal SH2 domains and stimulates downst...

journal_title：Circulation research

authors： Vanderlaan RD,Hardy WR,Kabir MG,Pasculescu A,Jones N,deTombe PP,Backx PH,Pawson T

更新日期：2011-01-21 00:00:00

abstract：:We recorded 60 DC simultaneous electrograms from isolated porcine and canine hearts in the first minutes after coronary occlusion. Ventricular premature beats (VPB) originated from the normal side of the ischemic border, which was frequently separated from the central ischemic area showing delayed activity by a small ...

journal_title：Circulation research

authors： Janse MJ,van Capelle FJ

更新日期：1982-04-01 00:00:00

abstract：:In the mammalian myocardium, potassium (K(+)) channels control resting potentials, action potential waveforms, automaticity, and refractory periods and, in most cardiac cells, multiple types of K(+) channels that subserve these functions are expressed. Molecular cloning has revealed the presence of a large number of K...

journal_title：Circulation research

authors： Nerbonne JM,Nichols CG,Schwarz TL,Escande D

更新日期：2001-11-23 00:00:00

abstract：RATIONALE:The recent discovery of meningeal lymphatics in mammals is reshaping our understanding of fluid homeostasis and cellular waste management in the brain, but visualization and experimental analysis of these vessels is challenging in mammals. Although the optical clarity and experimental advantages of zebrafish ...

journal_title：Circulation research

authors： Castranova D,Samasa B,Venero Galanternik M,Jung HM,Pham VN,Weinstein BM

更新日期：2021-01-08 00:00:00

abstract：:To investigate the possible contributions of cardiac volume overload and cardiac sympathetic hyperactivity in the effects of sodium on cardiac mass, we evaluated the effects of treatment with saline (1%) and deoxycorticosterone acetate + saline (DOCA/saline) for 10 days and 3 and 6 weeks on ventricular anatomy and int...

journal_title：Circulation research

authors： Fields NG,Yuan BX,Leenen FH

更新日期：1991-03-01 00:00:00

abstract：:Ventricular muscle fibers from dog hearts were superfused with K+-free, high Ca2+ solutions after exposure to a K+-free, Ca2+-free superfusate. Following a series of driven action potentials, oscillatory after potentials (OAPs) were elicited in all 40 preparations at a resting potential of greater than -60 mV. The OAP...

journal_title：Circulation research

authors： Hiraoka M,Okamoto Y,Sano T

更新日期：1981-04-01 00:00:00

abstract：RATIONALE:Obesity leads to increased ischemic heart disease (IHD) risk, but the risk is thought to be mediated through intermediate variables and may not be caused by increased weight per se. OBJECTIVE:To test the hypothesis that the increased IHD risk because of obesity is mediated through lipoproteins, blood pressur...

journal_title：Circulation research

authors： Varbo A,Benn M,Smith GD,Timpson NJ,Tybjaerg-Hansen A,Nordestgaard BG

更新日期：2015-02-13 00:00:00

abstract：:The direct-current magnetocardiogram, which shows the T-Q (baseline) shift, is used to clarify the cause of S-T depression induced by stress testing in the human heart. Measurements are made of the amount of baseline shift associated with the S-T depression. Results are presented of a well-documented patient, with typ...

journal_title：Circulation research

authors： Cohen D,Savard P,Rifkin RD,Lepeschkin E,Strauss WE

更新日期：1983-08-01 00:00:00

abstract：RATIONALE:Disruption of endothelial barrier function and neutrophil-mediated injury are two major mechanisms underlying the pathophysiology of sepsis-induced acute lung injury (ALI). Recently we reported that endotoxin induced activation of RhoA in mice lungs that led to the disruption of endothelial barrier and lung e...

journal_title：Circulation research

authors： Gorovoy M,Han J,Pan H,Welch E,Neamu R,Jia Z,Predescu D,Vogel S,Minshall RD,Ye RD,Malik AB,Voyno-Yasenetskaya T

更新日期：2009-09-11 00:00:00

abstract：:The myocardium contains collagen matrix that is a major determinant of its architecture, structural integrity, and mechanical properties. This fibrillar matrix consists primarily of type I and type III collagens having epimysial, perimysial, and endomysial components. The present study shows the alteration of collagen...

journal_title：Circulation research

authors： Mukherjee D,Sen S

更新日期：1990-12-01 00:00:00