Magnetic measurement of S-T and T-Q segment shifts in humans. Part II: Exercise-induced S-T segment depression.

abstract：RATIONALE:Lipoprotein(a) [Lp(a)] is a low-density lipoprotein-like lipoprotein and important cardiovascular risk factor whose cognate receptor and intracellular fate remains unknown. OBJECTIVE:Our study aimed to determine the intracellular trafficking pathway for Lp(a) and the receptor responsible for its uptake in li...

journal_title：Circulation research

authors： Sharma M,Redpath GM,Williams MJ,McCormick SP

更新日期：2017-03-31 00:00:00

abstract：:We have shown previously that tyrosine 319 in a conserved YIPP motif in the C terminus of angiotensin II (Ang II) type 1 receptors (AT(1)Rs) is essential for transactivation of epidermal growth factor receptor (EGFR) in vitro. We hypothesized that the signaling mechanism mediated through the specific amino acid sequen...

journal_title：Circulation research

authors： Zhai P,Galeotti J,Liu J,Holle E,Yu X,Wagner T,Sadoshima J

更新日期：2006-09-01 00:00:00

abstract：:We report the cloning of cDNAs encoding two different human nonmuscle myosin heavy chains designated NMMHC-A and NMMHC-B. The mRNAs encoding NMMHC-A and NMMHC-B are both 7.5 kb in size but are shown to be the products of different genes, which are localized to chromosome 22q11.2 and chromosome 17q13, respectively. In ...

journal_title：Circulation research

authors： Simons M,Wang M,McBride OW,Kawamoto S,Yamakawa K,Gdula D,Adelstein RS,Weir L

更新日期：1991-08-01 00:00:00

abstract：:Mechanisms of denervation supersensitivity to sympathomimetic amines were studied in conscious animals. Norepinephrine, 0.1 micrograms/kg, increased left ventricular dP/dt significantly more (4208 +/- 828 mm Hg/sec) in dogs with cardiac denervation than in intact dogs (1029 +/- 280 mm Hg/sec), P less than 0.01, wherea...

journal_title：Circulation research

authors： Vatner DE,Lavallee M,Amano J,Finizola A,Homcy CJ,Vatner SF

更新日期：1985-07-01 00:00:00

abstract：:Mechanical forces participate in morphogenesis from the level of individual cells to whole organism patterning. This article reviews recent research that has identified specific roles for mechanical forces in important developmental events. One well defined example is that dynein-driven cilia create fluid flow that de...

journal_title：Circulation research

authors： Patwari P,Lee RT

更新日期：2008-08-01 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：:A central role for leukocytes in neointimal hyperplasia after arterial injury is suspected. However, the relative importance of neutrophils and monocytes in balloon or stent-induced injury are not well understood, and mechanistic targeting of leukocyte recruitment or function is crude. We determined the temporal and s...

journal_title：Circulation research

authors： Horvath C,Welt FG,Nedelman M,Rao P,Rogers C

更新日期：2002-03-08 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：RATIONALE:Previous studies on the relationship between diabetes and arterial stiffness were mostly cross-sectional. A few longitudinal studies focused on one single direction. Whether the association between arterial stiffness and diabetes is bidirectional remains unclear to date. OBJECTIVE:To explore the temporal rel...

journal_title：Circulation research

authors： Zheng M,Zhang X,Chen S,Song Y,Zhao Q,Gao X,Wu S

更新日期：2020-12-04 00:00:00

abstract：RATIONALE:Chronic rejection, accelerated coronary atherosclerosis, myocardial infarction, and ischemic heart failure determine the unfavorable evolution of the transplanted heart in humans. OBJECTIVE:Here we tested whether the pathological manifestations of the transplanted heart can be corrected partly by a strategy ...

journal_title：Circulation research

authors： D'Alessandro DA,Kajstura J,Hosoda T,Gatti A,Bello R,Mosna F,Bardelli S,Zheng H,D'Amario D,Padin-Iruegas ME,Carvalho AB,Rota M,Zembala MO,Stern D,Rimoldi O,Urbanek K,Michler RE,Leri A,Anversa P

更新日期：2009-11-20 00:00:00

abstract：:This study investigations the phenomenon of sustained mechanical alternans (SMA) through the use of quantitative criteria. Discrete analysis is used to demonstrate that the hemodynamic variables during SMA are governed by a simple mathematical relation. The analysis shows that the value of the slope created by the two...

journal_title：Circulation research

authors： Adler D,Nikolic S,Sonnenblick EH,Yellin EL

更新日期：1991-07-01 00:00:00

abstract：:Caspase-1 processes the interleukin (IL)-1beta and IL-18 inactive precursors to the biologically active cytokines that are known to have proatherogenic effects. The present study investigated the genetic variability of the CASP1 gene and plasma levels of caspase-1 in relation to cardiovascular risk. In Europeans, 3 ta...

journal_title：Circulation research

authors： Blankenberg S,Godefroy T,Poirier O,Rupprecht HJ,Barbaux S,Bickel C,Nicaud V,Schnabel R,Kee F,Morrison C,Evans A,Lackner KJ,Cambien F,Münzel T,Tiret L,AtheroGene Investigators.

更新日期：2006-07-07 00:00:00

abstract：:The role of the central nervous system in the mechanism(s) involved in acute carotid baroreflex resetting was studied in six conscious, chronically instrumented, aortic-denervated dogs. Dogs were prepared for reversible vascular isolation of the carotid sinuses. Acute baroreflex resetting was induced by holding the le...

journal_title：Circulation research

authors： Tan W,Panzenbeck MJ,Hajdu MA,Zucker IH

更新日期：1989-07-01 00:00:00

abstract：:Purkinje cells contain sarcoplasmic reticulum (SR) directly under the surface membrane, are devoid of t-tubuli, and are packed with myofibrils surrounded by central SR. Several studies have reported that electrical excitation induces a biphasic Ca(2+) transient in Purkinje fiber bundles. We determined the nature of th...

journal_title：Circulation research

authors： Boyden PA,Pu J,Pinto J,Keurs HE

更新日期：2000-03-03 00:00:00

abstract：RATIONALE:Despite significant interest in bone marrow mononuclear cell (BMC) therapy for ischemic heart disease, current techniques have resulted in only modest benefits. However, selected patients have shown improvements after autologous BMC therapy, but the contributing factors are unclear. OBJECTIVE:The purpose of ...

journal_title：Circulation research

authors： Schutt RC,Trachtenberg BH,Cooke JP,Traverse JH,Henry TD,Pepine CJ,Willerson JT,Perin EC,Ellis SG,Zhao DX,Bhatnagar A,Johnstone BH,Lai D,Resende M,Ebert RF,Wu JC,Sayre SL,Orozco A,Zierold C,Simari RD,Moyé L,Cogle

更新日期：2015-01-02 00:00:00

abstract：:Multiple voltage-gated K+ channels contribute to the repolarization phases of the cardiac action potential and are targets of several antiarrhythmic drugs. The Kv1.5 K+ channel gene is expressed in the heart, and heterologous expression of this gene generates a slowly inactivating K+ current. Previously, we found that...

journal_title：Circulation research

authors： Takimoto K,Levitan ES

更新日期：1994-12-01 00:00:00

abstract：RATIONALE:The cardiac inwardly rectifying K(+) current (I(K1)) plays a critical role in modulating excitability by setting the resting membrane potential and shaping phase 3 of the cardiac action potential. OBJECTIVE:This study aims to analyze the effects of nitric oxide (NO) on human atrial I(K1) and on Kir2.1 channe...

journal_title：Circulation research

authors： Gómez R,Caballero R,Barana A,Amorós I,Calvo E,López JA,Klein H,Vaquero M,Osuna L,Atienza F,Almendral J,Pinto A,Tamargo J,Delpón E

更新日期：2009-08-14 00:00:00

abstract：:Anisotropic impulse conduction was studied in neonatal rat heart cell monolayers produced by culturing cells on a growth-directing substrate of collagen. Monolayers consisting of parallel-oriented cells without visible intercellular clefts were selected for experiments; cell lengths and widths were 65.8 +/- 12.5 and 1...

journal_title：Circulation research

authors： Fast VG,Kléber AG

更新日期：1994-09-01 00:00:00

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：:In adult mammals, massive sudden loss of cardiomyocytes after infarction overwhelms the limited regenerative capacity of the myocardium, resulting in the formation of a collagen-based scar. Necrotic cells release danger signals, activating innate immune pathways and triggering an intense inflammatory response. Stimula...

journal_title：Circulation research

authors： Prabhu SD,Frangogiannis NG

更新日期：2016-06-24 00:00:00

abstract：:Magnesium modulates vascular smooth muscle cell (VSMC) function. However, molecular mechanisms regulating VSMC Mg2+ remain unknown. Using biochemical, pharmacological, and genetic tools, the role of transient receptor potential membrane melastatin 7 (TRPM7) cation channel in VSMC Mg2+ homeostasis was evaluated. Rat, m...

journal_title：Circulation research

authors： He Y,Yao G,Savoia C,Touyz RM

更新日期：2005-02-04 00:00:00

abstract：:Quinidine is the most commonly used drug for the chronic treatment of ventricular arrhythmias, but it may be arrhythmogenic. Much information exists concerning quinidine's effects on active properties in cardiac tissues, but virtually nothing is known of its effects on passive properties. We studied the effects of qui...

journal_title：Circulation research

authors： Arnsdorf MF,Sawicki GJ

更新日期：1987-08-01 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：:Our goal in this review is to discuss the pathophysiology, diagnosis, and treatment of stroke caused by atherosclerosis of the major intracranial arteries. References for the review were identified by searching PubMed for related studies published from 1955 to June 2016 using search terms intracranial stenosis and int...

journal_title：Circulation research

authors： Banerjee C,Chimowitz MI

更新日期：2017-02-03 00:00:00

abstract：RATIONALE:Cardiac resynchronization therapy (CRT) is an effective clinical treatment for heart failure patients with conduction delay, impaired contraction, and energetics. Our recent studies have revealed that mitochondrial posttranslational modifications (PTM) may contribute to its benefits, motivating the present st...

journal_title：Circulation research

authors： Wang SB,Foster DB,Rucker J,O'Rourke B,Kass DA,Van Eyk JE

更新日期：2011-09-16 00:00:00

abstract：:Dimethylarginie dimethylaminohydrolase (DDAH) degrades asymmetric dimethylarginine (ADMA), an endogenous nitric oxide (NO) synthase inhibitor, and comprises 2 isoforms, DDAH1 and DDAH2. To investigate the in vivo role of DDAH2, we generated transgenic mice overexpressing DDAH2. The transgenic mice manifested reduction...

journal_title：Circulation research

authors： Hasegawa K,Wakino S,Tatematsu S,Yoshioka K,Homma K,Sugano N,Kimoto M,Hayashi K,Itoh H

更新日期：2007-07-20 00:00:00

abstract：:We determined the extent of convergence of preganglionic fibers from the right and left vagus nerves on postganglionic neurons that supply the sinoatrial node in chloralose-anesthetized dogs. We administered hemicholinium-3 and stimulated the right vagus nerve at a high frequency to deplete acetylcholine from the post...

journal_title：Circulation research

authors： Lang SA,Zieske H,Levy MN

更新日期：1990-09-01 00:00:00

abstract：:In newborn lambs, pulmonary prostacyclin (PGI2) production increases acutely in response to low oxygen. We tested the hypothesis that decreased oxygenation directly stimulates PGI2 synthesis in arterial segments and cultured endothelial cells from newborn lamb intrapulmonary arteries. In segments studied at PO2 of 680...

journal_title：Circulation research

authors： North AJ,Brannon TS,Wells LB,Campbell WB,Shaul PW

更新日期：1994-07-01 00:00:00

abstract：:Angiotensin II (Ang II) increases renal sympathetic nerve activity in anesthetized mice before and after ganglionic blockade, suggesting that Ang II may directly activate postganglionic sympathetic neurons. The present study directly tested this hypothesis in vitro. Neurons were dissociated from aortic-renal and celia...

journal_title：Circulation research

authors： Ma X,Chapleau MW,Whiteis CA,Abboud FM,Bielefeldt K

更新日期：2001-04-27 00:00:00

abstract：:During an investigation of the effect of ryanodine on contractions in cardiac muscle, it was found that long rest periods removed all or most of the drug's effect. Therefore, we studied the kinetics of block development and recovery from block produced by low concentrations of ryanodine (1-100 pM) on the postrest cont...

journal_title：Circulation research

authors： Malecot CO,Katzung BG

更新日期：1987-04-01 00:00:00