Decreased energy reserve in an animal model of dilated cardiomyopathy. Relationship to contractile performance.

abstract：:The action potential model presented in our accompanying article in this journal is used to investigate phenomena that involve dynamic changes of [Ca2+]i, as described below. Delayed afterdepolarizations (DADs) are induced by spontaneous Ca2+ release from the sarcoplasmic reticulum (SR), which, in turn, activates both...

journal_title：Circulation research

authors： Luo CH,Rudy Y

更新日期：1994-06-01 00:00:00

abstract：:To gain some insight into inotropic mechanisms, we compared the effects of several classes of inotropic interventions on the isometric twitch and force-velocity properties of isolated rabbit myocardium. Postextrasystolic potentiation was chosen as one of the interventions in the belief that its onset is so rapid that ...

journal_title：Circulation research

authors： Chiu YC,Walley KR,Ford LE

更新日期：1989-11-01 00:00:00

abstract：:High sodium intake (HNa) increases brain ouabainlike activity (OLA) in rats. In spontaneously hypertensive rats (SHR), HNa exaggerates development of hypertension and pressor and sympathoexcitatory responses to stress. To investigate whether dietary sodium-induced changes in brain OLA play a functional role, responses...

journal_title：Circulation research

authors： Huang BS,Leenen FH

更新日期：1992-02-01 00:00:00

abstract：:The goals of this article were (1) to identify cell surface proteins whose expression was regulated by diabetes and (2) to assess their contribution to diabetic complications. We purified heat shock protein 90alpha (Hsp90alpha) from the membrane fraction of high glucose-treated endothelial cells (ECs) as a binding par...

journal_title：Circulation research

authors： Lei H,Romeo G,Kazlauskas A

更新日期：2004-04-16 00:00:00

abstract：:Sarcolemmal and microsomal membranes prepared from adult canine cardiac myocytes (sarcolemmal Na+, K+-ATPase = 71.8 mumol/mg per hr and microsomal rotenone-insensitive NADH cytochrome c reductase = 114 mumol/mg per hr) were each preincubated at 37 degrees C in the presence of a free radical generating system consistin...

journal_title：Circulation research

authors： Kramer JH,Mak IT,Weglicki WB

更新日期：1984-07-01 00:00:00

abstract：:3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitors (statins) can exert beneficial effects independently of serum cholesterol reduction by increasing the bioavailability of nitric oxide. However, it is unclear whether statins can exert such effects directly on cardiac myocytes and whether mitochondria...

journal_title：Circulation research

authors： Jones SP,Teshima Y,Akao M,Marbán E

更新日期：2003-10-17 00:00:00

abstract：:Power ratios were derived from the principle of ultrasonic Doppler velocimetry to determine a ratio of the volume of vortices to the total vessel volume under the ultrasonic beam. This ratio also equals the ratio of the cross-sectional area of vortices to the vessel lumen. In vitro pulsatile flow experiments were perf...

journal_title：Circulation research

authors： Tamura T,Fronek A

更新日期：1990-07-01 00:00:00

abstract：:The myocardium of the failing heart undergoes a number of structural alterations, most notably hypertrophy of cardiac myocytes and an increase in extracellular matrix proteins, often seen as primary fibrosis. Connective tissue growth factor (CTGF) is a key molecule in the process of fibrosis and therefore seems an att...

journal_title：Circulation research

authors： Duisters RF,Tijsen AJ,Schroen B,Leenders JJ,Lentink V,van der Made I,Herias V,van Leeuwen RE,Schellings MW,Barenbrug P,Maessen JG,Heymans S,Pinto YM,Creemers EE

更新日期：2009-01-30 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：RATIONALE:Allogeneic mesenchymal precursor cells (MPCs) have been effective in large animal models of ischemic and nonischemic heart failure (HF). OBJECTIVE:To evaluate the feasibility and safety of 3 doses (25, 75, or 150 million cells) of immunoselected allogeneic MPCs in chronic HF patients in a phase 2 trial. MET...

journal_title：Circulation research

authors： Perin EC,Borow KM,Silva GV,DeMaria AN,Marroquin OC,Huang PP,Traverse JH,Krum H,Skerrett D,Zheng Y,Willerson JT,Itescu S,Henry TD

更新日期：2015-08-28 00:00:00

abstract：RATIONALE:PCSKs (Proprotein convertase subtilisins/kexins) are a protease family with unknown functions in vasculature. Previously, we demonstrated PCSK6 upregulation in human atherosclerotic plaques associated with smooth muscle cells (SMCs), inflammation, extracellular matrix remodeling, and mitogens. OBJECTIVE:Here...

journal_title：Circulation research

authors： Rykaczewska U,Suur BE,Röhl S,Razuvaev A,Lengquist M,Sabater-Lleal M,van der Laan SW,Miller CL,Wirka RC,Kronqvist M,Gonzalez Diez M,Vesterlund M,Gillgren P,Odeberg J,Lindeman JH,Veglia F,Humphries SE,de Faire U,Baldass

更新日期：2020-02-28 00:00:00

abstract：RATIONALE:Giant-cell arteritis (GCA) is a large-vessel vasculitis characterized by immune cell infiltration, yet the potential involvement of neutrophils has rarely been studied. OBJECTIVE:We investigated whether alterations in neutrophil reactivity occurred in the pathogenesis of GCA or during its clinical management...

journal_title：Circulation research

authors： Nadkarni S,Dalli J,Hollywood J,Mason JC,Dasgupta B,Perretti M

更新日期：2014-01-17 00:00:00

abstract：:Tyrosine kinase cascades may play a role in the hypoxic regulation of hypoxia-inducible factor (HIF)-1. We investigated the role of tyrosine kinase phosphorylation and of the Shc/Ras cascade on hypoxic HIF-1 stabilization. Exposure of human umbilical vein endothelial cells to hypoxia results in HIF protein stabilizati...

journal_title：Circulation research

authors： Jung F,Haendeler J,Hoffmann J,Reissner A,Dernbach E,Zeiher AM,Dimmeler S

更新日期：2002-07-12 00:00:00

abstract：:We previously observed that stimulation of vascular smooth muscle cell (VSMC) proliferation with growth factors is associated with dismantling of cadherin junctions and nuclear translocation of beta-catenin. In this study we demonstrate directly that growth factors stimulate beta-catenin/T-cell factor (TCF) signaling ...

journal_title：Circulation research

authors： Quasnichka H,Slater SC,Beeching CA,Boehm M,Sala-Newby GB,George SJ

更新日期：2006-12-08 00:00:00

abstract：:On the basis of animal models of arterial injury, smooth muscle cell proliferation has been posited as a dominant event in restenosis. Unfortunately, little is known about this proliferation in the human restenotic lesion. The purpose of this study was to determine the extent and time course of proliferation in primar...

journal_title：Circulation research

authors： O'Brien ER,Alpers CE,Stewart DK,Ferguson M,Tran N,Gordon D,Benditt EP,Hinohara T,Simpson JB,Schwartz SM

更新日期：1993-08-01 00:00:00

abstract：:To determine whether or not salt loading restricted to the brain would elevate blood pressure, chronically implanted osmotic minipumps were used to infuse hypertonic sodium chloride solutions made in artificial cerebrospinal fluid into a jugular vein intravenously or the third cerebral ventricle, intracerebroventricul...

journal_title：Circulation research

authors： Miyajima E,Buñag RD

更新日期：1984-05-01 00:00:00

abstract：:During ischemia and reperfusion, with an increase in intracellular Na+ and a depolarized membrane potential, Ca2+ may enter the myocyte in exchange for intracellular Na+ via reverse-mode Na+-Ca2+ exchange (NCX). To test the role of Ca2+ entry via NCX during ischemia and reperfusion, we studied mice with cardiac-specif...

journal_title：Circulation research

authors： Imahashi K,Pott C,Goldhaber JI,Steenbergen C,Philipson KD,Murphy E

更新日期：2005-10-28 00:00:00

abstract：:We studied the effects of intense sympathetic stimulation on the chronotropic responses of the heart to subsequent test stimulations of the cardiac autonomic nerves in dogs anesthetized with alpha-chloralose. Such intense sympathetic stimulations (which we refer to as "release stimulations") are known to release neuro...

journal_title：Circulation research

authors： Yang T,Levy MN

更新日期：1993-01-01 00:00:00

abstract：:Desmosomes and gap junctions are distinct structural components of the cardiac intercalated disc. Here, we asked whether the presence of plakophilin (PKP)2, a component of the desmosome, is essential for the proper function and distribution of the gap junction protein connexin (Cx)43. We used RNA silencing technology ...

journal_title：Circulation research

authors： Oxford EM,Musa H,Maass K,Coombs W,Taffet SM,Delmar M

更新日期：2007-09-28 00:00:00

abstract：:This review reflects and expands on the contents of my presentation at the Thomas W. Smith Memorial Lecture at American Heart Association Scientific Sessions, 2011. "Decoding the cardiac message" refers to accumulating results from ongoing microRNA research that is altering longstanding concepts of the mechanisms for,...

journal_title：Circulation research

authors： Dorn GW 2nd

更新日期：2012-03-02 00:00:00

abstract：:Protein kinase C (PKC) is a key mediator of many diverse physiological and pathological responses. Although little is known about the specific in vivo roles of the various cardiac PKC isozymes, activation-induced translocation of PKC is believed to be the primary determinant of isozyme-specific functions. Recently, we...

journal_title：Circulation research

authors： Mochly-Rosen D,Wu G,Hahn H,Osinska H,Liron T,Lorenz JN,Yatani A,Robbins J,Dorn GW 2nd

更新日期：2000-06-09 00:00:00

abstract：RATIONALE:MicroRNA (miR)-1 and -133 play a crucial role in skeletal and cardiac muscle biology and pathophysiology. However, their expression and regulation in vascular cell physiology and disease is currently unknown. OBJECTIVE:The aim of the present study was to evaluate the role, if any, of miR-1 and miR-133 in vas...

journal_title：Circulation research

authors： Torella D,Iaconetti C,Catalucci D,Ellison GM,Leone A,Waring CD,Bochicchio A,Vicinanza C,Aquila I,Curcio A,Condorelli G,Indolfi C

更新日期：2011-09-30 00:00:00

abstract：:We have previously shown that a cryoactivatable inactive form of renin, which we have tentatively termed prorenin, occurs in human plasma. Plasma prorenin is measured by subtracting the endogenous plasma renin activity (PRA) from the total renin activity measured after cryoactivation. Cryoactivation is accomplished by...

journal_title：Circulation research

authors： Sealey JE,Moon C,Laragh JH,Atlas SA

更新日期：1977-05-01 00:00:00

abstract：:Ischemia and simulated ischemic conditions induce enhanced release of norepinephrine (NE) in the brain and the heart. Although studies with neuronal preparations demonstrated a rise in [Ca2+]i under energy-depleted conditions, such release of NE in the heart appears to be predominantly Ca2+ independent. Since Ca2+ ove...

journal_title：Circulation research

authors： Du XJ,Bobik A,Little PJ,Esler MD,Dart AM

更新日期：1997-02-01 00:00:00

abstract：:Over the last 4 decades, heart transplantation (HTx) has evolved as a mainstream therapy for heart failure. Approximately half of patients needing HTx have organ failure consequent to atherosclerosis. Despite advances in immunosuppressive drugs, long-term success of HTx is limited by the development of a particular ty...

journal_title：Circulation research

authors： Rahmani M,Cruz RP,Granville DJ,McManus BM

更新日期：2006-10-13 00:00:00

abstract：:Isolated, cultured arterial endothelial cells express an acetylcholine (ACh)-activated K+ current in addition to an inward rectifier current whose conductance is unaffected by ACh. The cholinergic K+ current is specifically blocked by atropine (1 microM) and shows single saturation kinetics with ACh (half-maximal stim...

journal_title：Circulation research

authors： Olesen SP,Davies PF,Clapham DE

更新日期：1988-06-01 00:00:00

abstract：:Matrix metalloproteinases (MMPs) and, in particular, MMP-9 are important for smooth muscle cell (SMC) migration into the intima. In this study, we sought to determine whether MMP-9 is critical for SMC migration and for the formation of a neointima by using mice in which the gene was deleted (MMP-9(-/-) mice). A denudi...

journal_title：Circulation research

authors： Cho A,Reidy MA

更新日期：2002-11-01 00:00:00

abstract：RATIONALE:The participation of endothelial cells (EC) in many physiological and pathological processes is widely modeled using human EC cultures, but genetic manipulation of these untransformed cells has been technically challenging. Clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated p...

journal_title：Circulation research

authors： Abrahimi P,Chang WG,Kluger MS,Qyang Y,Tellides G,Saltzman WM,Pober JS

更新日期：2015-07-03 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：:Vagal afferents from the cardiopulmonary region exert a tonic inhibition on the vasomotor center. This is demonstrated by constriction of systemic resistance and splanchnic capacitance vessels and by increased output of renin when the vagi are cut or blocked. In dogs, removal or selective denervation of organs showed ...

journal_title：Circulation research

authors： Thorén PN,Donald DE,Shepherd JT

更新日期：1976-06-01 00:00:00