Modulation of Na+ current inactivation by stimulation of protein kinase C in cardiac cells.

abstract：:The activity of the adrenergic system plays an important role in the genesis of malignant arrhythmias and the spreading of the infarcted zone in acute myocardial ischemia. Acute myocardial ischemia induces an increased activity of adenylyl cyclase. This sensitization at the enzyme level as shown in the isolated perfus...

journal_title：Circulation research

authors： Strasser RH,Braun-Dullaeus R,Walendzik H,Marquetant R

更新日期：1992-06-01 00:00:00

abstract：:Heart failure (HF) has been singled out as an epidemic and is a staggering clinical and public health problem, associated with significant mortality, morbidity, and healthcare expenditures, particularly among those aged ≥ 65 years. The case mix of HF is changing over time with a growing proportion of cases presenting ...

journal_title：Circulation research

authors： Roger VL

更新日期：2013-08-30 00:00:00

abstract：:The release of acetylcholine from autonomic nerves in those tissues that receive a cholinergic innervation is widely believed to dilate blood vessels. Exogenously administered acetylcholine in vivo does dilate vascular beds and produce hypotension; however, this latter effect is indirect and probably the result of lib...

journal_title：Circulation research

authors： Kalsner S

更新日期：1989-08-01 00:00:00

abstract：:Spatial electrical heterogeneity has a profound effect on normal cardiac electrophysiology and genesis of cardiac arrhythmias in diseased hearts. The Na+-Ca2+ exchanger (NCX) is a key linker, through Ca2+ signaling, between contractility and arrhythmias. Here we characterize the differential transmural expression of N...

journal_title：Circulation research

authors： Xiong W,Tian Y,DiSilvestre D,Tomaselli GF

更新日期：2005-08-05 00:00:00

abstract：:Hearts from rabbits with 8-16 weeks of alloxan-diabetes were compared with hearts from normal rabbits to determine whether diabetic myocardium is more sensitive to ischemic injury. In isolated buffer-perfused hearts, left ventricular developed pressure, diastolic pressure, time to peak pressure (TTPP), time to half-ma...

journal_title：Circulation research

authors： Vogel WM,Apstein CS

更新日期：1988-05-01 00:00:00

abstract：RATIONALE:Necrosis is one of the main forms of cardiomyocyte death in heart disease. Recent studies have demonstrated that certain types of necrosis are regulated and programmed dependent on the activation of receptor-interacting serine/threonine-protein kinase (RIPK) 1 and 3 which may be negatively regulated by Fas-as...

journal_title：Circulation research

authors： Wang JX,Zhang XJ,Li Q,Wang K,Wang Y,Jiao JQ,Feng C,Teng S,Zhou LY,Gong Y,Zhou ZX,Liu J,Wang JL,Li PF

更新日期：2015-07-31 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：:The alpha-adrenergic blocking drugs, phentolamine and Hydergine, both act centrally at different sites to depress and enhance the pressor and sympathetic nerve response to decreased baroreceptor afferent input in anesthetized cats. Depression of the rise in blood pressure and sympathetic nerve discharge during bilater...

journal_title：Circulation research

authors： Tadepalli AS,Mills E,Schanberg SM

更新日期：1976-11-01 00:00:00

abstract：:Angiotensin-converting enzyme (ACE) activity in the guinea pig fetal-placental unit was assessed at the different oxygen tensions found in utero, during labor, and at birth. To determine fetal-placental ACE activity, we separately perfused in situ term guinea pig fetuses and their placentas via the umbilical vessels u...

journal_title：Circulation research

authors： Davidson D,Stalcup SA,Mellins RB

更新日期：1981-02-01 00:00:00

abstract：:Vascular endothelial cells respond to laminar shear stress by aligning in the direction of flow, a process which may contribute to atheroprotection. Here we report that localized alpha4 integrin phosphorylation is a mechanism for establishing the directionality of shear stress-induced alignment in microvascular endoth...

journal_title：Circulation research

authors： Goldfinger LE,Tzima E,Stockton R,Kiosses WB,Kinbara K,Tkachenko E,Gutierrez E,Groisman A,Nguyen P,Chien S,Ginsberg MH

更新日期：2008-07-18 00:00:00

abstract：:Intracellular recordings were made from eustachian ridge of cat right atrium to determine mechanisms responsible for subsidiary pacemaker automaticity. Pacemaker action potentials exhibited two phases of diastolic depolarization: an initial steeper slope (D1) followed by a more gradual slope (D2). Cesium (1 mM) decrea...

journal_title：Circulation research

authors： Rubenstein DS,Lipsius SL

更新日期：1989-04-01 00:00:00

abstract：:Inflammatory cell infiltration is a feature of postischemic neovascularization. However, mechanisms leading to leukocyte attraction to the site of neovascularization are still undefined. We hypothesized that the CXC chemokine receptor 3 (CXCR3) may contribute to leukocyte accumulation and subsequently to blood vessel ...

journal_title：Circulation research

authors： Waeckel L,Mallat Z,Potteaux S,Combadière C,Clergue M,Duriez M,Bao L,Gerard C,Rollins BJ,Tedgui A,Levy BI,Silvestre JS

更新日期：2005-03-18 00:00:00

abstract：RATIONALE:We studied a possibility that shRNAs can lead to transcriptional gene activation at the promoter level via epigenetic mechanism. OBJECTIVE:The purpose of this study was to test the effects on vascular endothelial growth factor (VEGF-A) expression by promoter targeted small hairpin RNAs (shRNAs) in vitro and ...

journal_title：Circulation research

authors： Turunen MP,Lehtola T,Heinonen SE,Assefa GS,Korpisalo P,Girnary R,Glass CK,Väisänen S,Ylä-Herttuala S

更新日期：2009-09-11 00:00:00

abstract：:We have investigated the requirement for c-myc downregulation in the growth arrest of vascular smooth muscle cells (VSMCs). Rat VSMCs were infected with a retrovirus vector directing constitutive expression of either the complete human c-Myc protein (VSM-myc cells) or the c-Myc deletion mutant D106-143, which is inact...

journal_title：Circulation research

authors： Bennett MR,Evan GI,Newby AC

更新日期：1994-03-01 00:00:00

abstract：:Growing evidence exists that ATP-sensitive mitochondrial potassium channels (MitoKATP channel) are a major contributor to the cardiac protection against ischemia. Given the importance of mitochondria in the cardiac cell, we tested whether the potent and specific opener of the MitoKATP channel diazoxide attenuates the ...

journal_title：Circulation research

authors： Wang Y,Ashraf M

更新日期：1999-05-28 00:00:00

abstract：:The cellular basis of reactive oxygen intermediate-induced arrhythmias was investigated in isolated rabbit ventricular cells using the whole-cell voltage- and current-clamp techniques. Singlet oxygen and superoxide were generated by the photoactivation of rose bengal. Single ventricular cells exposed to rose bengal (1...

journal_title：Circulation research

authors： Matsuura H,Shattock MJ

更新日期：1991-02-01 00:00:00

abstract：:To investigate the spread of contraction in the rabbit ear artery, changes in segment diameter were measured after local stimulation. No spread of contraction was produced by direct current or local application of norepinephrine (NE). Repetitive electrical stimulation caused contraction which spread far from the point...

journal_title：Circulation research

authors： Vonderlage M

更新日期：1981-09-01 00:00:00

abstract：:Topical application of sodium arachidonate (50-200 micrograms/ml) or bradykinin (0.1-10 micrograms/ml) on the brain surface of anesthetized cats caused dose-dependent cerebral arteriolar dilation. This dilation was blocked by 67-100% in the presence of superoxide dismutase and catalase. These enzymes did not affect th...

journal_title：Circulation research

authors： Kontos HA,Wei EP,Povlishock JT,Christman CW

更新日期：1984-09-01 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

abstract：:Nitric oxide (NO) decreases cellular oxygen (O(2)) consumption by competitively inhibiting cytochrome c oxidase. Here, we show that endogenously released endothelial NO, either basal or stimulated, can modulate O(2) consumption both throughout the thickness of conductance vessels and in the microcirculation. Furthermo...

journal_title：Circulation research

authors： Victor VM,Nuñez C,D'Ocón P,Taylor CT,Esplugues JV,Moncada S

更新日期：2009-05-22 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：RATIONALE:Transcatheter, intramyocardial injections of bone marrow-derived cell therapy produces reverse remodeling in large animal models of ischemic cardiomyopathy. OBJECTIVE:We used cardiac MRI (CMR) in patients with left ventricular (LV) dysfunction related to remote myocardial infarction (MI) to test the hypothes...

journal_title：Circulation research

authors： Williams AR,Trachtenberg B,Velazquez DL,McNiece I,Altman P,Rouy D,Mendizabal AM,Pattany PM,Lopera GA,Fishman J,Zambrano JP,Heldman AW,Hare JM

更新日期：2011-04-01 00:00:00

abstract：:A specific difference-spectrophotometric method was used to measure nitric oxide (NO) release into the coronary effluent perfusate of isolated, constant-flow-perfused guinea pig hearts. Authentic NO applied into the coronary circulation decreased vascular resistance dose dependently and enhanced coronary release of cy...

journal_title：Circulation research

authors： Kelm M,Schrader J

更新日期：1990-06-01 00:00:00

abstract：:Calcium uptake was measured in homogenates and microsomal preparations enriched in sarcoplasmic reticulum vesicles isolated from hearts of hypertrophic (BIO 14.6) and dilated (BIO 53.58) cardiomyopathic as well as control (F1B) Syrian hamsters at 3, 7, 9, and 11 months of age. Calcium uptake studies were done using th...

journal_title：Circulation research

authors： Whitmer JT,Kumar P,Solaro RJ

更新日期：1988-01-01 00:00:00

abstract：:Nonlaminar flow is a major predisposing factor to atherosclerosis. Yet little is known regarding hemodynamic gene regulation in disease-prone areas of the vascular tree in vivo. We have determined spatial patterns of expression of endothelial cell receptors in the arterial tree and of reporter gene constructs in trans...

journal_title：Circulation research

authors： Porat RM,Grunewald M,Globerman A,Itin A,Barshtein G,Alhonen L,Alitalo K,Keshet E

更新日期：2004-02-20 00:00:00

abstract：:We tested the hypothesis that impairment of flow-dependent dilator mechanisms of skeletal muscle arterioles is one of the underlying reasons for the increased peripheral resistance in hypertension. Isolated, cannulated arterioles (approximately 55 microns) of gracilis muscle of 12-week-old spontaneously hypertensive (...

journal_title：Circulation research

authors： Koller A,Huang A

更新日期：1994-03-01 00:00:00

abstract：:Existing evidence led us to hypothesize that increases in p85alpha, a regulatory subunit of PI3-kinase, in presympathetic brain areas contribute to hypertension. PI3-kinase p85alpha, p110alpha, and p110delta mRNA was 1.5- to 2-fold higher in the paraventricular nucleus (PVN) of spontaneously hypertensive rats (SHR) co...

journal_title：Circulation research

authors： Veerasingham SJ,Yamazato M,Berecek KH,Wyss JM,Raizada MK

更新日期：2005-02-18 00:00:00

abstract：:Previous work has shown that neutrophils isolated from whole blood adhere to cardiac-myocytes via CD18 (beta 2 integrin) to cause injury to the heart cells. In vitro, we have found that upon endothelial transmigration, neutrophils can also express alpha 4 beta 1; however, whether this contributes to neutrophil adhesio...

journal_title：Circulation research

authors： Reinhardt PH,Ward CA,Giles WR,Kubes P

更新日期：1997-08-01 00:00:00

abstract：RATIONALE:Mechanisms of angiogenesis in skeletal muscle remain poorly understood. Efforts to induce physiological angiogenesis hold promise for the treatment of diabetic microvascular disease and peripheral artery disease but are hindered by the complexity of physiological angiogenesis and by the poor angiogenic respon...

journal_title：Circulation research

authors： Rowe GC,Raghuram S,Jang C,Nagy JA,Patten IS,Goyal A,Chan MC,Liu LX,Jiang A,Spokes KC,Beeler D,Dvorak H,Aird WC,Arany Z

更新日期：2014-08-15 00:00:00

abstract：:We tested the hypothesis that activation of transient receptor potential vanilloid type-1 (TRPV1) by capsaicin prevents adipogenesis. TRPV1 channels in 3T3-L1-preadipocytes and visceral adipose tissue from mice and humans were detected by immunoblotting and quantitative real-time RT-PCR. The effect of TRPV1 on cytosol...

journal_title：Circulation research

authors： Zhang LL,Yan Liu D,Ma LQ,Luo ZD,Cao TB,Zhong J,Yan ZC,Wang LJ,Zhao ZG,Zhu SJ,Schrader M,Thilo F,Zhu ZM,Tepel M

更新日期：2007-04-13 00:00:00