Mechanisms of supersensitivity to sympathomimetic amines in the chronically denervated heart of the conscious dog.

abstract：:Calcium channel blockers are among the most commonly used therapeutic drugs. Nevertheless, the utility of calcium channel blockers for heart disease is limited because of the potent vasodilatory effect that causes hypotension, and other side effects attributable to blockade of noncardiac channels. Therefore, focal cal...

journal_title：Circulation research

authors： Murata M,Cingolani E,McDonald AD,Donahue JK,Marbán E

更新日期：2004-08-20 00:00:00

abstract：:Mitral regurgitation (MR) causes ventricular dilation, a blunted myocardial force-frequency relation, and increased crossbridge force-time integral (FTI). The mechanism of FTI increase was investigated using sinusoidal length perturbation analysis to compare crossbridge function in skinned left ventricular (LV) epicar...

journal_title：Circulation research

authors： Mulieri LA,Barnes W,Leavitt BJ,Ittleman FP,LeWinter MM,Alpert NR,Maughan DW

更新日期：2002-01-11 00:00:00

abstract：:Elastance-resistance [E(t)-R] representations of the left ventricle (LV) were evaluated for their ability to reproduce instantaneous pressure [P(t)] and outflow [Q(t)]. Experiments were performed in open-chest rats. P(t) and Q(t) were measured during steady-state ejecting beats and during a beat in which the aorta was...

journal_title：Circulation research

authors： Campbell KB,Kirkpatrick RD,Knowlen GG,Ringo JA

更新日期：1990-01-01 00:00:00

abstract：:The positive inotropic response to angiotensin I and II in cardiac tissue of most mammalian species, as well as the exact site in the heart for conversion of local and systemic angiotensin I into angiotensin II, remains to be elucidated. In isolated cat papillary muscles, angiotensin I and angiotensin II (0.1 nM to 1 ...

journal_title：Circulation research

authors： Meulemans AL,Andries LJ,Brutsaert DL

更新日期：1990-06-01 00:00:00

abstract：:We evaluated the hypothesis that stunning swine myocardium with brief ischemia reduces oxygen demand in the stunned region and increases tolerance of myocardium to longer periods of ischemia. Wall function was quantified with ultrasonic crystals aligned to measure wall thickening, and stunning was achieved with two cy...

journal_title：Circulation research

authors： Schott RJ,Rohmann S,Braun ER,Schaper W

更新日期：1990-04-01 00:00:00

abstract：:The goal of this study was to test the hypothesis that the cardioprotective effects of the late phase of ischemic preconditioning (PC) can be mimicked by treatment with NO donors. In phase I (studies of myocardial stunning), conscious rabbits underwent a sequence of six 4-minute coronary occlusion/4-minute reperfusion...

journal_title：Circulation research

authors： Takano H,Tang XL,Qiu Y,Guo Y,French BA,Bolli R

更新日期：1998-07-13 00:00:00

abstract：RATIONALE:Cardiac myosin-binding protein-C (cMyBP-C) phosphorylation at Ser-273, Ser-282, and Ser-302 regulates myocardial contractility. In vitro and in vivo experiments suggest the nonequivalence of these sites and the potential importance of Ser-282 phosphorylation in modulating the protein's overall phosphorylation...

journal_title：Circulation research

authors： Sadayappan S,Gulick J,Osinska H,Barefield D,Cuello F,Avkiran M,Lasko VM,Lorenz JN,Maillet M,Martin JL,Brown JH,Bers DM,Molkentin JD,James J,Robbins J

更新日期：2011-07-08 00:00:00

abstract：:The potential for exogenous infusion of basic fibroblast growth factor (bFGF) to increase collateral blood flow to dependent tissue was quantified in adult male rats with peripheral arterial insufficiency. Occlusion of the femoral artery at a proximal site did not infringe on resting blood flow to the distal hindlimb ...

journal_title：Circulation research

authors： Yang HT,Deschenes MR,Ogilvie RW,Terjung RL

更新日期：1996-07-01 00:00:00

abstract：:The role of Ca(2+)-dependent potassium channels in mediating vascular responses to activation of adenylate cyclase in vivo is not known. The goal of this study was to examine the hypothesis that dilatation of cerebral arterioles in response to activation of adenylate cyclase is mediated by activation of Ca(2+)-depende...

journal_title：Circulation research

authors： Taguchi H,Heistad DD,Kitazono T,Faraci FM

更新日期：1995-06-01 00:00:00

abstract：:In 57 normal subjects (age 20-60 years), we analyzed the spontaneous beat-to-beat oscillation in R-R interval during control recumbent position, 90 degrees upright tilt, controlled respiration (n = 16) and acute (n = 10) and chronic (n = 12) beta-adrenergic receptor blockade. Automatic computer analysis provided the a...

journal_title：Circulation research

authors： Pagani M,Lombardi F,Guzzetti S,Rimoldi O,Furlan R,Pizzinelli P,Sandrone G,Malfatto G,Dell'Orto S,Piccaluga E

更新日期：1986-08-01 00:00:00

abstract：:Vascular endothelial growth factor (VEGF) is a critical regulator of angiogenesis that stimulates proliferation, migration, and proteolytic activity of endothelial cells. Although the mitogenic activity of VEGF is endothelial cell specific, recent reports indicate VEGF is able to stimulate chemotaxis and tissue factor...

journal_title：Circulation research

authors： Wang H,Keiser JA

更新日期：1998-10-19 00:00:00

abstract：:Controversy exists whether positive end-expiratory pressure (PEEP) ventilation lowers cardiac output by reducing left ventricular preload, or by a combination of mechanisms. Sixteen open-chest dogs were instrumented for measurement of left and right ventricular pressure, aortic flow, and left ventricular dimensions. W...

journal_title：Circulation research

authors： Darsee JR,Mikolich JR,Walter PF,Schlant RC

更新日期：1981-10-01 00:00:00

abstract：RATIONALE:Although mesenchymal stem cell (MSC) transplantation has been shown to promote cardiac repair in acute myocardial injury in vivo, its overall restorative capacity appears to be restricted mainly because of poor cell viability and low engraftment in the ischemic myocardium. Specific chemokines are upregulated ...

journal_title：Circulation research

authors： Huang J,Zhang Z,Guo J,Ni A,Deb A,Zhang L,Mirotsou M,Pratt RE,Dzau VJ

更新日期：2010-06-11 00:00:00

abstract：:Transgenic mice overexpressing the calcium binding protein, S100A4/Mts1, occasionally develop severe pulmonary vascular obstructive disease. To understand what underlies this propensity, we compared the pulmonary vascular hemodynamic and structural features of S100A4/Mts1 with control C57Bl/6 mice at baseline, followi...

journal_title：Circulation research

authors： Merklinger SL,Wagner RA,Spiekerkoetter E,Hinek A,Knutsen RH,Kabir MG,Desai K,Hacker S,Wang L,Cann GM,Ambartsumian NS,Lukanidin E,Bernstein D,Husain M,Mecham RP,Starcher B,Yanagisawa H,Rabinovitch M

更新日期：2005-09-16 00:00:00

abstract：:Peroxisome proliferator-activated receptor (PPAR) gamma is activated by thiazolidinediones (TZDs), widely used as insulin-sensitizing agents for the treatment of type 2 diabetes. TZDs have been shown to induce apoptosis in a variety of mammalian cells. In vascular smooth muscle cells (VSMCs), proliferation and apoptos...

journal_title：Circulation research

authors： Bruemmer D,Yin F,Liu J,Berger JP,Sakai T,Blaschke F,Fleck E,Van Herle AJ,Forman BM,Law RE

更新日期：2003-08-22 00:00:00

abstract：RATIONALE:Accurate knowledge of the cellular composition of the heart is essential to fully understand the changes that occur during pathogenesis and to devise strategies for tissue engineering and regeneration. OBJECTIVE:To examine the relative frequency of cardiac endothelial cells, hematopoietic-derived cells, and ...

journal_title：Circulation research

authors： Pinto AR,Ilinykh A,Ivey MJ,Kuwabara JT,D'Antoni ML,Debuque R,Chandran A,Wang L,Arora K,Rosenthal NA,Tallquist MD

更新日期：2016-02-05 00:00:00

abstract：:The mechanism of propranolol-inhibited sarcolemmal membrane lipid peroxidation was investigated by electron spin resonance spin-trapping technique using 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) and 2-methyl-2-nitrosopropane (MNP). Highly purified canine myocytic sarcolemma were peroxidized by a superoxide-driven (from ...

journal_title：Circulation research

authors： Mak IT,Arroyo CM,Weglicki WB

更新日期：1989-10-01 00:00:00

abstract：:Originally identified as moderate biological modifiers, microRNAs have recently emerged as powerful regulators of diverse cellular processes with especially important roles in disease and tissue remodeling. The rapid pace of studies on microRNA regulation and function necessitates the development of suitable technique...

journal_title：Circulation research

authors： van Rooij E

更新日期：2011-01-21 00:00:00

abstract：:Advances in immunosuppression have decreased the incidence of acute rejection, but the development of vasculopathy in the coronary arteries of transplants continues to limit the survival of cardiac allografts. Transplant vasculopathy has also been referred to as accelerated graft arteriosclerosis because it has featur...

journal_title：Circulation research

authors： Wehner J,Morrell CN,Reynolds T,Rodriguez ER,Baldwin WM 3rd

更新日期：2007-02-02 00:00:00

abstract：:We studied baroreceptor function in dogs before and after surgical repair of coarctation of the aorta by direct recording of multifiber carotid sinus (CS) nerve activity (NA) during alteration of pulsatile arterial pressure with systemic phenylephrine and nitroprusside, and during static pressure changes using a CS po...

journal_title：Circulation research

authors： Igler FO,Boerboom LE,Werner PH,Donegan JH,Zuperku EJ,Bonchek LI,Kampine JP

更新日期：1981-03-01 00:00:00

abstract：:We investigated whether the heart, like other mammalian organs, possesses internal clocks, and, if so, whether pressure overload-induced hypertrophy alters the clock mechanism. Clock genes are intrinsically maintained, as shown by rhythmic changes even in single cells. Clocks are believed to confer a selective advanta...

journal_title：Circulation research

authors： Young ME,Razeghi P,Taegtmeyer H

更新日期：2001-06-08 00:00:00

abstract：:As early as the 4th embryonic day, the ventricle of the chick embryo responded to isoproterenol (Iso) with an increase in the force of contraction; at all ages studied, this positive inotropic effect was accompanied by an increased rate of tension development. There was a transient, 10-fold decrease in the sensitivity...

journal_title：Circulation research

authors： Higgins D,Pappano AJ

更新日期：1981-02-01 00:00:00

abstract：:The type 1B angiotensin II (AT1B) receptor cloned from rat kidney was stably expressed in Chinese hamster ovary cells. The stably expressed receptor was characterized by radioligand binding studies and functional coupling to inositol 1,4,5-triphosphate (IP3) formation. Exposure of cells expressing the AT1B receptor to...

journal_title：Circulation research

authors： Tang H,Shirai H,Inagami T

更新日期：1995-08-01 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：: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：:[3H](+/-)Carazolol, a newly available beta-adrenergic receptor antagonist, can be used to characterize beta-adrenergic receptor subtypes present in membrane vesicles derived from canine ventricular myocardium and canine lung. [3H](+/-)Carazolol binding is saturable, of high affinity, and is displaceable by beta-adrene...

journal_title：Circulation research

authors： Manalan AS,Besch HR Jr,Watanabe AM

更新日期：1981-08-01 00:00:00

abstract：:Recovery of postischemic function may be limited by energy synthesis by mitochondria, energy transfer via the creatine kinase reaction, or energy utilization at myofibrils. To identify the limiting step, we defined the relations among oxygen consumption, creatine kinase reaction velocity and cardiac performance in myo...

journal_title：Circulation research

authors： Neubauer S,Hamman BL,Perry SB,Bittl JA,Ingwall JS

更新日期：1988-07-01 00:00:00

abstract：:Patients with severe heart failure are at high risk of sudden cardiac death. In the majority of these patients, sudden cardiac death is thought to be due to ventricular tachyarrhythmias. Alterations of the electric properties of single myocytes in heart failure may favor the occurrence of ventricular arrhythmias in th...

journal_title：Circulation research

authors： Priebe L,Beuckelmann DJ

更新日期：1998-06-15 00:00:00

abstract：:Despite intense interest in understanding the differentiation of vascular smooth muscle, very little is known about the cellular and molecular mechanisms that control differentiation of this cell type. Progress in this field has been hampered by the lack of an inducible in vitro system for study of the early steps of ...

journal_title：Circulation research

authors： Blank RS,Swartz EA,Thompson MM,Olson EN,Owens GK

更新日期：1995-05-01 00:00:00

abstract：:We administered ascitic fluid containing atrial natriuretic factor (ANF) monoclonal antibody to rats after 3 weeks of exposure to hypoxia while the rats were still hypoxic. In additional chronically hypoxic rats, we infused synthetic rat ANF. In conscious chronically instrumented rats, after a bolus dose of 5 microgra...

journal_title：Circulation research

authors： Raffestin B,Levame M,Eddahibi S,Viossat I,Braquet P,Chabrier PE,Cantin M,Adnot S

更新日期：1992-01-01 00:00:00