Impaired nitric oxide-mediated flow-induced dilation in arterioles of spontaneously hypertensive rats.

abstract：:Our objective was to test the hypotheses that 1) myoplasmic [Ca2+] is the primary determinant of crossbridge phosphorylation and that 2) phosphorylation is the primary determinant of crossbridge interactions with the thin filament in swine carotid arterial smooth muscle. We tested these hypotheses by evaluating the re...

journal_title：Circulation research

authors： Rembold CM,Murphy RA

更新日期：1988-09-01 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

abstract：:Cellular mechanisms underlying beta-adrenergic stimulation of the arrhythmogenic transient inward current (TI) were investigated by using a two-microelectrode voltage-clamp technique in rabbit cardiac Purkinje fibers. TI induced by elevating [Ca2+]o to 30 mmol/L and substituting [Na+]o with N-methyl-D-glucamine (NMG) ...

journal_title：Circulation research

authors： Han X,Ferrier GR

更新日期：1995-04-01 00:00:00

abstract：:The effects of Bay K 8644 on the high-threshold calcium channel was investigated by means of the whole-cell patch-clamp technique in single guinea pig ventricular myocytes. The goal of the experiments was to characterize the inhibitory effects of Bay K 8644 on the calcium channel, and identify the factors that influen...

journal_title：Circulation research

authors： Hadley RW,Hume JR

更新日期：1988-01-01 00:00:00

abstract：:The mechanisms underlying the blunted contractile response to beta-adrenergic receptor (beta-AR) stimulation in heart failure (HF) are incompletely understood, especially with regard to beta-AR subtype-specific regulation of L-type Ca2+ channels. We evaluated the impact of HF induced by pacing tachycardia on beta-AR r...

journal_title：Circulation research

authors： He JQ,Balijepalli RC,Haworth RA,Kamp TJ

更新日期：2005-09-16 00:00:00

abstract：:The identification of endothelium-derived relaxing factor as nitric oxide (NO) dramatically altered the course of vascular biology, as well as other biomedical disciplines. The ubiquity of this natural product of cell metabolism and the complexity of its biochemistry provide a rich source of molecular mediators of phe...

journal_title：Circulation research

authors： Loscalzo J

更新日期：2013-07-05 00:00:00

abstract：:To investigate the contributions of humoral and hemodynamic factors to cardiac adaptations associated with chronic exercise, female Fischer 344 rats were subjected to chronic swimming, infrarenal cardiac transplantation, or both. Swimming resulted in hypertrophy (11-12%) of the in situ hearts in both the unoperated an...

journal_title：Circulation research

authors： Advani SV,Geenen D,Malhotra A,Factor SM,Scheuer J

更新日期：1990-09-01 00:00:00

abstract：:The patch clamp technique was used to make whole-cell recordings of calcium channel currents from single muscle cells freshly isolated from rat mesenteric arteries. The cells were found to contain two types of calcium channels; one type is activated by small depolarizations and inactivates quickly, whereas the other r...

journal_title：Circulation research

authors： Bean BP,Sturek M,Puga A,Hermsmeyer K

更新日期：1986-08-01 00:00:00

abstract：:The blood pressure of rabbits with chronic one-kidney hypertension can be lowered to normal by immunization with hog kidney cortex preparations that do not contain renin, thus providing evidence for a new factor essential for the maintenance of an elevated blood pressure. A search for the new factor has led to the dis...

journal_title：Circulation research

authors： Skeggs LT,Kahn JR,Levine M,Dorer FE,Lentz KE

更新日期：1977-02-01 00:00:00

abstract：:We compared the blocking effects of the local anesthetics, lidocaine and benzocaine, on the sodium current, using single rat ventricular cells to obtain further information about the voltage dependence and kinetics of local anesthetic interaction with cardiac sodium channels. We used a hybrid voltage clamp system whic...

journal_title：Circulation research

authors： Sanchez-Chapula J,Tsuda Y,Josephson IR

更新日期：1983-05-01 00:00:00

abstract：:Cyclic nucleotide phosphodiesterases regulate cAMP-mediated signaling by controlling intracellular cAMP content. The cAMP-hydrolyzing activity of several families of cyclic nucleotide phosphodiesterases found in human heart is regulated by cGMP. In the case of PDE2, this regulation primarily involves the allosteric st...

journal_title：Circulation research

authors： Zaccolo M,Movsesian MA

更新日期：2007-06-08 00:00:00

abstract：RATIONALE:Diabetes mellitus increases cardiovascular disease risk in humans and remains elevated despite cholesterol-lowering therapy with statins. Consistent with this, in mouse models, diabetes mellitus impairs atherosclerosis plaque regression after aggressive cholesterol lowering. MicroRNA 33 (miR33) is a key negat...

journal_title：Circulation research

authors： Distel E,Barrett TJ,Chung K,Girgis NM,Parathath S,Essau CC,Murphy AJ,Moore KJ,Fisher EA

更新日期：2014-10-10 00:00:00

abstract：:Increased activity of matrix metalloproteinases (MMPs) has been implicated in numerous disease processes, including tumor growth and metastasis, arthritis, and periodontal disease. It is now becoming increasingly clear that extracellular matrix degradation by MMPs is also involved in the pathogenesis of cardiovascular...

journal_title：Circulation research

authors： Creemers EE,Cleutjens JP,Smits JF,Daemen MJ

更新日期：2001-08-03 00:00:00

abstract：:Transient coronary occlusion (15 minutes) does not result in irreversible myocardial injury but is associated with a depression of contractile function sustained for several hours to days ("stunned myocardium"). The defect in the contractile process responsible for this phenomenon has been suggested to be causally rel...

journal_title：Circulation research

authors： Ito BR,Tate H,Kobayashi M,Schaper W

更新日期：1987-12-01 00:00:00

abstract：:Mechanoreceptors and chemoreceptors have been identified inside the kidney, but their functional role is still largely unclear. The aim of this study was to investigate whether changes in urine output could modify the discharge rate of renal afferent fibers. Experiments were performed in anesthetized cats in which aff...

journal_title：Circulation research

authors： Genovesi S,Pieruzzi F,Wijnmaalen P,Centonza L,Golin R,Zanchetti A,Stella A

更新日期：1993-11-01 00:00:00

abstract：RATIONALE:Mechanical stress plays an important role in proliferation of venous smooth muscle cells (SMCs) in neointima, a process of formation that contributes to failure of vein grafts. However, it is unknown what intracellular growth signal leads to proliferation of venous SMCs. OBJECTIVE:The objective of this study...

journal_title：Circulation research

authors： Cheng J,Wang Y,Ma Y,Chan BT,Yang M,Liang A,Zhang L,Li H,Du J

更新日期：2010-11-12 00:00:00

abstract：:Prolongation of the action potential has been postulated to be a major reason for the altered diastolic relaxation of the heart in patients with severe heart failure. To investigate the electrophysiological basis for this action potential prolongation in terminal heart failure, K+ currents were recorded in single vent...

journal_title：Circulation research

authors： Beuckelmann DJ,Näbauer M,Erdmann E

更新日期：1993-08-01 00:00:00

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：:Previously, we have reported on the selective accumulation of an atrial-like myosin light chain-1 (ALC1) in different forms of human ventricular hypertrophy. The present study involves the determination of ALC1 content in a control group and in patients with aortic stenosis or insufficiency before and 56 +/- 23 months...

journal_title：Circulation research

authors： Sütsch G,Brunner UT,von Schulthess C,Hirzel HO,Hess OM,Turina M,Krayenbuehl HP,Schaub MC

更新日期：1992-05-01 00:00:00

abstract：:Increased levels of C-peptide, a cleavage product of proinsulin, circulate in patients with insulin resistance and early type 2 diabetes mellitus. Recent data suggest a potential causal role of C-peptide in atherogenesis by promoting monocyte and T-lymphocyte recruitment into the vessel wall. The present study examine...

journal_title：Circulation research

authors： Walcher D,Babiak C,Poletek P,Rosenkranz S,Bach H,Betz S,Durst R,Grüb M,Hombach V,Strong J,Marx N

更新日期：2006-11-24 00:00:00

abstract：:Changes in angiotensin-converting enzyme were measured in the lungs of fetal rabbits isolated and perfused in situ at varying ages from 22 days gestation to 7 days of age under controlled conditions of flow, pH, and temperature. Enzyme activity was assessed by infusing bradykinin or angiotensin I in Krebs-Henseleit so...

journal_title：Circulation research

authors： Stalcup SA,Pang LM,Lipset JS,Odya CE,Goodfriend TL,Mellins RB

更新日期：1978-11-01 00:00:00

abstract：:We have recently shown that adult canine ventricular myocytes express three distinct gap junction channel proteins, connexin40 (Cx40), connexin43 (Cx43), and connexin45 (Cx45). These proteins have unique cytoplasmic domains that likely confer connexin-specific physiological properties. To determine whether the three d...

journal_title：Circulation research

authors： Kanter HL,Laing JG,Beyer EC,Green KG,Saffitz JE

更新日期：1993-08-01 00:00:00

abstract：:A number of neurotransmitters modulate cardiac dihydropyridine-sensitive L-type Ca2+ channels through several homologous G protein-coupled receptors. Previous studies that have examined receptor-Ca2+ channel interactions have suffered because of the coexpression of various receptor subtypes in native cells. To study t...

journal_title：Circulation research

authors： Yatani A,Wakamori M,Niidome T,Yamamoto S,Tanaka I,Mori Y,Katayama K,Green S

更新日期：1995-03-01 00:00:00

abstract：:The expression of angiotensin II type 2 (AT(2)) receptor is closely associated with cell growth, differentiation, and/or injury. We examined the effect of interferon (IFN)-gamma on AT(2) receptor expression in mouse fibroblast R3T3 cells and demonstrated that IFN-gamma treatment increased the expression of AT(2) recep...

journal_title：Circulation research

authors： Horiuchi M,Hayashida W,Akishita M,Yamada S,Lehtonen JY,Tamura K,Daviet L,Chen YE,Hamai M,Cui TX,Iwai M,Minokoshi Y

更新日期：2000-02-04 00:00:00

abstract：:Cyclic GMP modulates gene expression in vascular smooth muscle cells (SMCs) in part by stimulating cGMP-dependent protein kinase I (PKGI) and the phosphorylation of transcription factors. In some cells, cGMP increases nuclear translocation of PKGI and PKGI-dependent phosphorylation of transcription regulators; however...

journal_title：Circulation research

authors： Sugiura T,Nakanishi H,Roberts JD Jr

更新日期：2008-07-03 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：:It is believed that inotropic agents exert their effects in cardiac muscle via a modulation of Ca2+ cycling; however, the involvement of phospholipase activation and the biochemical pathways participating in inotropic responsiveness remain unclear. The aim of the current study was to determine whether arachidonic acid...

journal_title：Circulation research

authors： Damron DS,Bond M

更新日期：1993-02-01 00:00:00

abstract：RATIONALE:Mechanisms underlying diastolic dysfunction need to be better understood. OBJECTIVE:To study the role of titin in diastolic dysfunction using a mouse model of experimental heart failure induced by transverse aortic constriction. METHODS AND RESULTS:Eight weeks after transverse aortic constriction surgery, m...

journal_title：Circulation research

authors： Hudson B,Hidalgo C,Saripalli C,Granzier H

更新日期：2011-09-30 00:00:00

abstract：:Angiotensin II exerts positive inotropic and chronotropic effects on the mammalian heart by binding to specific membrane receptors. Recently, two subtypes of angiotensin II receptors (AT1 and AT2) have been distinguished by using the nonpeptide antagonists losartan (previously known as DuP 753) and PD123177. To evalua...

journal_title：Circulation research

authors： Sechi LA,Griffin CA,Grady EF,Kalinyak JE,Schambelan M

更新日期：1992-12-01 00:00:00

abstract：:The transverse tubular system (t-system) of cardiac muscle is a structure that allows rapid propagation of excitation into the cell interior. Using 2-photon molecular excitation microscopy and digital image-processing methods, we have obtained a comprehensive overview of the t-system of rat ventricular myocytes in liv...

journal_title：Circulation research

authors： Soeller C,Cannell MB

更新日期：1999-02-19 00:00:00