Regional choline acetyltransferase activity in the guinea pig heart.

abstract：:Choline acetyltransferase activity, which is rate limiting in acetylcholine biosynthesis, was measured in the four heart chambers of guinea pigs subjected to (1) sham surgery, (2) constriction of the ascending aorta, (3) constriction of the descending thoracic aorta, and (4) constriction of the pulmonary artery. After...

journal_title：Circulation research

authors： Roskoski R Jr,Schmid PG,Mayer HE,Abboud FM

更新日期：1975-04-01 00:00:00

abstract：:Whole-cell Ca2+ channel currents were recorded from isolated single canine Purkinje and ventricular cells to determine whether there were multiple types of Ca2+ channels in these two cell types, as in many other excitable tissues. The experimental conditions were such that currents other than Ca2+ channel currents wer...

journal_title：Circulation research

authors： Tseng GN,Boyden PA

更新日期：1989-12-01 00:00:00

abstract：RATIONALE:The ubiquitin-proteasome system (UPS) and the autophagic-lysosomal pathway are pivotal to proteostasis. Targeting these pathways is emerging as an attractive strategy for treating cancer. However, a significant proportion of patients who receive a proteasome inhibitor-containing regime show cardiotoxicity. Mo...

journal_title：Circulation research

authors： Pan B,Li J,Parajuli N,Tian Z,Wu P,Lewno MT,Zou J,Wang W,Bedford L,Mayer RJ,Fang J,Liu J,Cui T,Su H,Wang X

更新日期：2020-07-31 00:00:00

abstract：:To investigate the functional consequences of a tropomyosin (TM) mutation associated with familial hypertrophic cardiomyopathy (FHC), we generated transgenic mice that express mutant alpha-TM in the adult heart. The missense mutation, which results in the substitution of asparagine for aspartic acid at amino acid posi...

journal_title：Circulation research

authors： Muthuchamy M,Pieples K,Rethinasamy P,Hoit B,Grupp IL,Boivin GP,Wolska B,Evans C,Solaro RJ,Wieczorek DF

更新日期：1999-07-09 00:00:00

abstract：:Cardiovascular disease continues to be the leading cause of death among women in the United States, accounting for ≈1 of every 3 female deaths. Sex-specific data focused on cardiovascular disease have been increasing steadily, yet is not routinely collected nor translated into practice. This comprehensive review focus...

journal_title：Circulation research

authors： Garcia M,Mulvagh SL,Merz CN,Buring JE,Manson JE

更新日期：2016-04-15 00:00:00

abstract：:Peroxisome proliferator-activated receptors (PPARs) are nuclear receptors controlling lipid and glucose metabolism as well as inflammation. PPARs are expressed in macrophages, cells that also generate reactive oxygen species (ROS). In this study, we investigated whether PPARs regulate ROS production in macrophages. Di...

journal_title：Circulation research

authors： Teissier E,Nohara A,Chinetti G,Paumelle R,Cariou B,Fruchart JC,Brandes RP,Shah A,Staels B

更新日期：2004-12-10 00:00:00

abstract：:Twenty-one dogs were studied under conditions of normal oxygenation and hypoxia with the microsphere distribution method to determine the effect of arterial oxygen saturation on the regional distribution of cardiac output. The dogs were anesthetized and artifically ventilated. Cannulas were placed in the left ventricl...

journal_title：Circulation research

authors： Adachi H,Strauss W,Ochi H,Wagner HN Jr

更新日期：1976-09-01 00:00:00

abstract：:Previous studies have demonstrated that cGMP and cAMP reduce the endothelial permeability for fluids and macromolecules when the endothelial permeability is increased by thrombin. In this study, we have investigated the mechanism by which cGMP improves the endothelial barrier function and examined whether nitric oxide...

journal_title：Circulation research

authors： Draijer R,Atsma DE,van der Laarse A,van Hinsbergh VW

更新日期：1995-02-01 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：:A surgical technique was developed to place sutures around the pulmonary arteries of young rats (about 1 month old and 100 g body weight). As the operated rats grew, the pulmonary arteries were gradually constricted, leading after 4-6 weeks to the development of severe right ventricular hypertrophy with free wall weig...

journal_title：Circulation research

authors： Julian FJ,Morgan DL,Moss RL,Gonzalez M,Dwivedi P

更新日期：1981-12-01 00:00:00

abstract：:Synthetic atrial natriuretic factor (ANF) was either added to suffusate solutions (30 nM) or infused into the jugular vein (0.1 nanomol/min/100 g) of anesthetized rats. Steady-state blood flow was calculated from arteriolar diameter and red blood cell velocity measurements using video microscopy in the intestinal or s...

journal_title：Circulation research

authors： Proctor KG,Bealer SL

更新日期：1987-07-01 00:00:00

abstract：:Arterial segments (less than 250 micron o.d.) excised from canine ileum were mounted in a chamber that permitted arterial transmural pressure (TMP) to be altered and measured. Subsequently, the periarterial nerves were field stimulated with single pulses (0.1 msec, 70 V), and the resting membrane potential (Em) as wel...

journal_title：Circulation research

authors： Smeda JS,Daniel EE

更新日期：1988-06-01 00:00:00

abstract：:Ablation of the enzyme phosphoinositide 3-kinase (PI3K)gamma (PI3Kgamma(-/-)) in mice increases cardiac contractility by elevating intracellular cAMP and enhancing sarcoplasmic reticulum Ca(2+) handling. Because cAMP is a critical determinant of heart rate, we investigated whether heart rate is altered in mice lacking...

journal_title：Circulation research

authors： Rose RA,Kabir MG,Backx PH

更新日期：2007-12-07 00:00:00

abstract：:Some statistical techniques for analyzing the kinds of studies typically reported in Circulation Research are described. Particular emphasis is given to the comparison of means from more than two populations, the joint effect of several experimentally controlled variables, and the analysis of studies with repeated mea...

journal_title：Circulation research

authors： Wallenstein S,Zucker CL,Fleiss JL

更新日期：1980-07-01 00:00:00

abstract：:Congenital heart defects affect almost 1% of human newborns. Recently, mutations in Notch ligands and receptors have been found to cause a variety of heart defects in rodents and humans. However, the molecular effects downstream of Notch are still poorly understood. Here we report that combined inactivation of Hey1 an...

journal_title：Circulation research

authors： Fischer A,Steidl C,Wagner TU,Lang E,Jakob PM,Friedl P,Knobeloch KP,Gessler M

更新日期：2007-03-30 00:00:00

abstract：:The bioactivity of nitric oxide (.NO) depends, in part, on its interaction with superoxide. Usually, superoxide dismutase (SOD) preserves .NO bioactivity by limiting the availability of superoxide. Ascorbic acid also effectively scavenges superoxide, but the extent to which this interaction is necessary for intact .NO...

journal_title：Circulation research

authors： Jackson TS,Xu A,Vita JA,Keaney JF Jr

更新日期：1998-11-02 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：:Transcriptional thyroid hormone responsiveness of the cardiac alpha-myosin heavy chain (alpha-MHC) gene has been demonstrated in transfections into fetal and neonatal cardiomyocytes and in transgenic mice. However, the correspondence between the regulation of MHC expression in dissociated cells with that in the intact...

journal_title：Circulation research

authors： Buttrick PM,Kaplan ML,Kitsis RN,Leinwand LA

更新日期：1993-06-01 00:00:00

abstract：:Electrocardiogram (ECG) electrodes and carotid arterial and superior vena caval (SVC) catheters were placed in eight nonpregnant ewes and 11 fetuses (109-129 days gestation) to measure heart rate, arterial presssure, P-R interval, left ventricular pre-ejection period (PEP), and left ventricular ejection time (LVET), b...

journal_title：Circulation research

authors： Berman W Jr,Ravenscroft PJ,Sheiner LB,Heymann MA,Melmon KL,Rudolph AM

更新日期：1977-11-01 00:00:00

abstract：:Autophagy is a reparative, life-sustaining process by which cytoplasmic components are sequestered in double-membrane vesicles and degraded on fusion with lysosomal compartments. Growing evidence reveals that basal autophagy is an essential in vivo process mediating proper vascular function. Moreover, autophagy is sti...

journal_title：Circulation research

authors： De Meyer GR,Grootaert MO,Michiels CF,Kurdi A,Schrijvers DM,Martinet W

更新日期：2015-01-30 00:00:00

abstract：:Understanding the molecular interactions among components of cardiac Z-discs and their role in signaling has become pivotal in explaining long- and short-term regulation of cardiac function. In striated muscle, the ends of the thin filaments from opposing sarcomeres overlap and are cross-linked by an elaborate array o...

journal_title：Circulation research

authors： Pyle WG,Solaro RJ

更新日期：2004-02-20 00:00:00

abstract：:Neuropeptide Y (NPY) is stored with norepinephrine in sympathetic nerves throughout the cardiovascular system and is released during activation of the sympathetic nervous system in humans and other animals. After stimulation of the cardiac sympathetic nerves in anesthetized dogs, the action of the vagus nerve on heart...

journal_title：Circulation research

authors： Hall GT,Gardner TD,Potter EK

更新日期：1990-07-01 00:00:00

abstract：:Although diabetes is recognized as a potent and prevalent risk factor for ischemic heart disease, less is known as to whether diabetes causes an altered cardiac phenotype independent of coronary atherosclerosis. Left ventricular systolic and diastolic dysfunction, left ventricular hypertrophy, and alterations in the c...

journal_title：Circulation research

authors： Poornima IG,Parikh P,Shannon RP

更新日期：2006-03-17 00:00:00

abstract：:The purpose of this study was to determine whether a quantitative relationship existed between a reduction in regional myocardial blood flow, measured by radiolabeled microspheres, and the degree and type of changes in myocardial activation recorded in bipolar left ventricular subepicardial and subendocardial electrog...

journal_title：Circulation research

authors： Ruffy R,Lovelace DE,Mueller TM,Knoebel SB,Zipes DP

更新日期：1979-12-01 00:00:00

abstract：:A selective history of the pathophysiological, structural, and metabolic changes found during an episode of severe myocardial ischemia in the canine heart is presented. The changes that cause ischemic injury to become irreversible are discussed in detail because these changes are the target of any successful therapy d...

journal_title：Circulation research

authors： Jennings RB

更新日期：2013-08-02 00:00:00

abstract：:Volume densities of mitochondria, myofibrils, and unspecified cytoplasm were measured by ultrastructural morphometry in myocardium from dogs, rats, hamsters, mice, and in biopsied tissue from human hearts. Human myocardium was composed of 23% mitochondria, 59% myofibrils, and 18% cytoplasm. Volume densities for mitoch...

journal_title：Circulation research

authors： Schaper J,Meiser E,Stämmler G

更新日期：1985-03-01 00:00:00

abstract：:The 2-amino-3-benzoylthiophene derivative PD 81,723 is an allosteric enhancer of agonist binding to brain A1 adenosine receptors. One aim of this study was to characterize and contrast the effects of PD 81,723 on the A1 receptor-mediated negative dromotropic and A2a receptor-mediated vasodilatory actions of adenosine ...

journal_title：Circulation research

authors： Kollias-Baker C,Ruble J,Dennis D,Bruns RF,Linden J,Belardinelli L

更新日期：1994-12-01 00:00:00

abstract：RATIONALE:T-type (CaV3.1/CaV3.2) Ca(2+) channels are expressed in rat cerebral arterial smooth muscle. Although present, their functional significance remains uncertain with findings pointing to a variety of roles. OBJECTIVE:This study tested whether CaV3.2 channels mediate a negative feedback response by triggering C...

journal_title：Circulation research

authors： Harraz OF,Abd El-Rahman RR,Bigdely-Shamloo K,Wilson SM,Brett SE,Romero M,Gonzales AL,Earley S,Vigmond EJ,Nygren A,Menon BK,Mufti RE,Watson T,Starreveld Y,Furstenhaupt T,Muellerleile PR,Kurjiaka DT,Kyle BD,Braun AP,W

更新日期：2014-09-12 00:00:00

abstract：:MicroRNAs act as negative regulators of gene expression by inhibiting the translation or promoting the degradation of target mRNAs. Because individual microRNAs often regulate the expression of multiple target genes with related functions, modulating the expression of a single microRNA can, in principle, influence an ...

journal_title：Circulation research

authors： van Rooij E,Marshall WS,Olson EN

更新日期：2008-10-24 00:00:00

abstract：:Acetylcholine (ACh) evokes the conduction of vasodilation along resistance microvessels. However, it is not known which cell layer (endothelium or smooth muscle) serves as the conduction pathway. In isolated, cannulated feed arteries ( approximately 70 microm in diameter at 75 mm Hg; length approximately 4 mm) of the ...

journal_title：Circulation research

authors： Emerson GG,Segal SS

更新日期：2000-01-07 00:00:00