Dilated Cardiomyopathy: Genetic Determinants and Mechanisms.

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：:Cell-cell communication has proven to be even more complex than previously thought since the discovery that extracellular vesicles serve as containers of biological information on various pathophysiological settings. Extracellular vesicles are classified into exosomes, microvesicles/microparticles, or apoptotic bodies...

journal_title：Circulation research

authors： Loyer X,Vion AC,Tedgui A,Boulanger CM

更新日期：2014-01-17 00:00:00

abstract：:Inflammation is an important driver of atherosclerosis, the underlying pathology of cardiovascular diseases. Therefore, therapeutic targeting of inflammatory pathways is suggested to improve cardiovascular outcomes in patients with cardiovascular diseases. This concept was recently proven by CANTOS (Canakinumab Anti-I...

journal_title：Circulation research

authors： Grebe A,Hoss F,Latz E

更新日期：2018-06-08 00:00:00

abstract：:alpha-Adrenergic stimulation (alpha-AS) and beta-adrenergic stimulation (beta-AS) of the myocardium are associated respectively with an increase and a decrease in myofilament responsiveness to Ca2+. We hypothesized that changes in cytosolic pH (pH(i)) may modulate these opposite actions of alpha-AS and beta-AS. The ef...

journal_title：Circulation research

authors： Gambassi G,Spurgeon HA,Lakatta EG,Blank PS,Capogrossi MC

更新日期：1992-10-01 00:00:00

abstract：:Our previous studies suggested that enhanced fibronectin mRNA translation in ductus arteriosus compared with aortic smooth muscle cells is related to increased expression of light chain 3 (LC3) of microtubule-associated protein 1, which binds an AU-rich element in the 3' untranslated region of fibronectin mRNA. We the...

journal_title：Circulation research

authors： Zhou B,Rabinovitch M

更新日期：1998-09-07 00:00:00

abstract：:The subcellular distribution of cardiac muscarinic receptors was defined in canine ventricular myocardium, and receptors were solubilized from subcellular fractions enriched in muscarinic receptor content. The subcellular location of muscarinic receptors in cardiac tissue was determined by measurement of the distribut...

journal_title：Circulation research

authors： Manalan AS,Werth DK,Jones LR,Watanabe AM

更新日期：1983-06-01 00:00:00

abstract：RATIONALE:Activation of Nox1 initiates redox-dependent signaling events crucial in the pathogenesis of vascular disease. Selective targeting of Nox1 is an attractive potential therapy, but requires a better understanding of the molecular modifications controlling its activation. OBJECTIVE:To determine whether posttran...

journal_title：Circulation research

authors： Streeter J,Schickling BM,Jiang S,Stanic B,Thiel WH,Gakhar L,Houtman JC,Miller FJ Jr

更新日期：2014-11-07 00:00:00

abstract：:Pharmacological modulation of [K+]o accumulation and action potential changes during acute myocardial ischemia is under evaluation as a promising new antiarrhythmic and cardioprotective strategy during myocardial ischemia and reperfusion. We studied the effects of cromakalim, a K+ channel opener that activates ATP-sen...

journal_title：Circulation research

authors： Venkatesh N,Stuart JS,Lamp ST,Alexander LD,Weiss JN

更新日期：1992-12-01 00:00:00

abstract：:Although human atherosclerosis is associated with aging, direct evidence of cellular senescence and the mechanism of senescence in vascular smooth muscle cells (VSMCs) in atherosclerotic plaques is lacking. We examined normal vessels and plaques by histochemistry, Southern blotting, and fluorescence in situ hybridizat...

journal_title：Circulation research

authors： Matthews C,Gorenne I,Scott S,Figg N,Kirkpatrick P,Ritchie A,Goddard M,Bennett M

更新日期：2006-07-21 00:00:00

abstract：:A narrow zone of block in isolated false tendon preparations was created by perfusion of the central compartment (gap) of a three-compartment tissue bath with either an isotonic sucrose solution or a solution designed to mimic the extracellular milieu in ischemic tissue. Driven responses on the proximal side of the ga...

journal_title：Circulation research

authors： Antzelevitch C,Moe GK

更新日期：1981-11-01 00:00:00

abstract：:Direct binding of apolipoprotein (apo)B-containing lipoproteins to proteoglycans is the initiating event in atherosclerosis, but the processes involved at later stages of development are unclear. Here, we investigated the importance of the apoB-proteoglycan interaction in the development of atherosclerosis over time a...

journal_title：Circulation research

authors： Gustafsson M,Levin M,Skålén K,Perman J,Fridén V,Jirholt P,Olofsson SO,Fazio S,Linton MF,Semenkovich CF,Olivecrona G,Borén J

更新日期：2007-10-12 00:00:00

abstract：:The role of contracture in the manifestation of calcium paradox-induced damage was examined using 2,3-butanedione monoxime (BDM) to inhibit myofibrillar activity. Calcium and sodium gain, loss of intracellular components, and changes in structure were monitored. If 30 mM BDM was added at the time of calcium repletion ...

journal_title：Circulation research

authors： Daly MJ,Elz JS,Nayler WG

更新日期：1987-10-01 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：:Trimetazidine is a clinically effective antianginal agent that has no negative inotropic or vasodilator properties. Although it is thought to have direct cytoprotective actions on the myocardium, the mechanism(s) by which this occurs is as yet undefined. In this study, we determined what effects trimetazidine has on b...

journal_title：Circulation research

authors： Kantor PF,Lucien A,Kozak R,Lopaschuk GD

更新日期：2000-03-17 00:00:00

abstract：:An extensive investigation of the cardiac actions of phorbol esters and the potential role of the Na(+)-H+ exchanger in those actions was carried out using isolated rat hearts. Sixty minutes of perfusion with 10(-9) M phorbol 12-myristate 13-acetate (PMA) or 10(-8) M phorbol 12,13-dibutyrate (PDBu) produced marked car...

journal_title：Circulation research

authors： Watson JE,Karmazyn M

更新日期：1991-10-01 00:00:00

abstract：:Despite the absence of a systematic development plan, β-blockers have reached the top tier of medical therapies for chronic heart failure. The successful outcome was due to the many dedicated investigators who produced, over a 30-year period, increasing evidence that β-blocking agents should or actually did improve th...

journal_title：Circulation research

authors： Bristow MR

更新日期：2011-10-28 00:00:00

abstract：:We studied the effect of histamine and H1 or H2 blockers on the diameter of pial arteries (39-227 micron) using microapplication into the perivascular space. Concentration-response curves for histamine showed dilations which started at 10(-7) M and were maximal at 10(-5) and 10(-4) M. The H2 blocker, cimetidine, induc...

journal_title：Circulation research

authors： Wahl M,Kuschinsky W

更新日期：1979-02-01 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：:Myocardial stunning is characterized by decreased myofilament Ca2+ responsiveness. To investigate the molecular basis of stunned myocardium, we performed PAGE and Western immunoblot analysis of the contractile proteins. Isolated rat hearts were retrogradely perfused at 37 degrees C for either 50 minutes (control group...

journal_title：Circulation research

authors： Gao WD,Atar D,Liu Y,Perez NG,Murphy AM,Marban E

更新日期：1997-03-01 00:00:00

abstract：:The aim of this study was to determine the mechanism of action of norepinephrine (NE) on arterial baroreceptors (BRs), with the focus on regularly discharging, presumably myelinated fibers. With the use of an in vitro aortic arch/aortic nerve preparation from rats, BR single-fiber discharge was recorded simultaneously...

journal_title：Circulation research

authors： Munch PA,Thoren PN,Brown AM

更新日期：1987-09-01 00:00:00

abstract：:The small (21 kDa) guanine nucleotide-binding protein (small G protein) superfamily comprises 5 subfamilies (Ras, Rho, ADP ribosylation factors [ARFs], Rab, and Ran) that act as molecular switches to regulate numerous cellular responses. Cardiac myocyte hypertrophy is associated with cell growth and changes in the cyt...

journal_title：Circulation research

authors： Clerk A,Sugden PH

更新日期：2000-05-26 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：:Membrane current abnormalities have been described in human heart failure. To determine whether similar current changes are observed in a large animal model of heart failure, we studied dogs with pacing-induced cardiomyopathy. Myocytes isolated from the midmyocardium of 13 dogs with heart failure induced by 3 to 4 wee...

journal_title：Circulation research

authors： Kääb S,Nuss HB,Chiamvimonvat N,O'Rourke B,Pak PH,Kass DA,Marban E,Tomaselli GF

更新日期：1996-02-01 00:00:00

abstract：:Angiotensin II (Ang II) has powerful modulatory actions on cardiovascular function that are mediated by specific receptors located on neurons within the hypothalamus and brain stem. Incubation of neuronal cocultures of rat hypothalamus and brain stem with Ang II elicits an Ang II type 1 (AT1) receptor-mediated inhibit...

journal_title：Circulation research

authors： Gelband CH,Warth JD,Mason HS,Zhu M,Moore JM,Kenyon JL,Horowitz B,Sumners C

更新日期：1999-02-19 00:00:00

abstract：:Rat myocardium expresses the 240- and 235-kD polypeptides antigenically related to alpha- and beta-subunits of brain calspectin (nonerythroid spectrin or fodrin), respectively. In the subcellular fractions of the myocardium, alpha-calspectin was found in the 600g, 10,000g, and 100,000g pellets, whereas beta-calspectin...

journal_title：Circulation research

authors： Yoshida K,Inui M,Harada K,Saido TC,Sorimachi Y,Ishihara T,Kawashima S,Sobue K

更新日期：1995-09-01 00:00:00

abstract：:To study the effects of stretch on the function of rat left atrium, we recorded contraction force, calcium transients, and intracellular action potentials (APs) during stretch manipulations. The stretch of the atrium was controlled by intra-atrial pressure. The Frank-Starling behavior of the atrium was manifested as a...

journal_title：Circulation research

authors： Tavi P,Han C,Weckström M

更新日期：1998-11-30 00:00:00

abstract：:Reductions in fluid shear stress produce endothelium-dependent vasoconstriction and promote neointimal hyperplasia, but the intracellular signaling mechanisms involved in these processes are poorly understood. To examine whether decreases in fluid shear stress affect endothelial cytosolic pH, carboxy-seminaphthorhodaf...

journal_title：Circulation research

authors： Ziegelstein RC,Blank PS,Cheng L,Capogrossi MC

更新日期：1998-04-20 00:00:00

abstract：:A new protocol has been developed for selective removal of the endothelium from the arteries of the perfused rat hind-limb preparation. The hind limb was perfused with oxygenated Krebs-Ringer bicarbonate solution with a combination of high flow and timed air bubbles (2 minutes at high flow followed by 5 minutes of air...

journal_title：Circulation research

authors： Ralevic V,Kristek F,Hudlická O,Burnstock G

更新日期：1989-06-01 00:00:00

abstract：RATIONALE:Cryptogenic strokes, those of unknown cause, have been estimated as high as 30% to 40% of strokes. Inflammation has been suggested as a critical etiologic factor. However, there is lack of experimental evidence. OBJECTIVE:In this study, we investigated inflammation-associated stroke using a mouse model that ...

journal_title：Circulation research

authors： Hollander MC,Latour LL,Yang D,Ishii H,Xiao Z,Min Y,Ray-Choudhury A,Munasinghe J,Merchant AS,Lin PC,Hallenbeck J,Boehm M,Yang L

更新日期：2017-12-08 00:00:00

abstract：RATIONALE:In ventricular myocytes of large mammals with low T-tubule density, a significant number of ryanodine receptors (RyRs) are not coupled to the sarcolemma; cardiac remodeling increases noncoupled RyRs. OBJECTIVE:Our aim was to test the hypothesis that coupled and noncoupled RyRs have distinct microdomain-depen...

journal_title：Circulation research

authors： Dries E,Bito V,Lenaerts I,Antoons G,Sipido KR,Macquaide N

更新日期：2013-11-08 00:00:00