coronary vasospasm/phosphatase

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Inhibition of myosin phosphatase by upregulated rho-kinase plays a key role for coronary artery spasm in a porcine model with interleukin-1beta.

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BACKGROUND We recently demonstrated that the Rho-kinase-mediated pathway plays an important role for coronary artery spasm in our porcine model with interleukin-1beta (IL-1beta). In this study, we examined whether or not Rho-kinase is upregulated at the spastic site and if so, how it induces

Recent insights into the mechanisms, predisposing factors, and racial differences of coronary vasospasm.

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Coronary vasospasm is currently considered to be an exaggerated contractile nonspecific response of the vascular smooth muscle in the large coronary artery to various agonists or stimulation, that is established after the process of inflammation and fibrocellular proliferation. Endothelial

Cellular and molecular mechanisms of coronary artery spasm: lessons from animal models.

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Coronary artery spasm plays an important role in the pathogenesis of a wide variety of ischemic heart diseases, especially in the Japanese population. Because coronary artery spasm can be induced by a variety of stimuli with different mechanisms of action, the occurrence of the spasm appears to be

Sevoflurane, but not propofol, prevents Rho kinase-dependent contraction induced by sphingosylphosphorylcholine in the porcine coronary artery.

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BACKGROUND Sphingosylphosphorylcholine may induce coronary vasospasm by the activation of Rho kinase. We designed the current study to examine the differential effects of anesthetics on Rho kinase activation induced by sphingosylphosphorylcholine in porcine coronary arteries. METHODS Rings of

Involvement of rho-kinase in agonists-induced contractions of arteriosclerotic human arteries.

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Coronary artery spasm plays an important role in the pathogenesis of a wide variety of ischemic heart diseases. We have recently demonstrated that Rho-kinase plays a key role in the spasm in our porcine model. However, it remains to be elucidated whether Rho-kinase-mediated pathway also contributes

A method for measuring Rho kinase activity in tissues and cells.

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The Rho-associated kinases (ROCKs) can regulate cell shape and function by modulating the actin cytoskeleton. ROCKs are serine-threonine protein kinases that can phosphorylate adducin, ezrin-radixin-moesin proteins, LIM kinase, and myosin light chain phosphatase. In the cardiovascular system, the

Regulation of force in vascular smooth muscle.

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Vascular smooth muscle contraction plays a defining role in the regulation and maintenance of blood pressure, and its deregulation is associated with many clinical syndromes including hypertension, coronary vasospasm and congestive heart failure. Over the past 20 years, there has been a growing

Increased leukocyte Rho-kinase activity in a population with acute coronary syndrome.

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Accumulating evidence suggests that Rho-associated kinase (ROCK) may be important in the pathogenesis of atherosclerosis and coronary vasospasm. In the present study, we investigated whether ROCK activity is increased in acute coronary syndrome (ACS) patients. Twenty-one patients with ACS (12 males,

Phosphorylation in coronary artery cold-induced contraction in the newborn lamb.

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Myocardial dysfunction after hypothermic protection has been linked to various mechanisms. Coronary vasospasm in particular may be responsible for ischemic injury during reperfusion. Herein we hypothesized that coronary arteries (CA) sustain a cold-induced contraction during hypothermia mediated by

Sphingosine 1-phosphate induces contraction of coronary artery smooth muscle cells via S1P2.

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OBJECTIVE Sphingosine 1-phosphate (Sph-1-P), a bioactive lipid derived from activated platelets, may play an important role in coronary artery spasm and hence the pathogenesis of ischemic heart diseases, since we reported that a decrease in coronary blood flow was induced by this lysophospholipid in

2014 Williams Harvey Lecture: importance of coronary vasomotion abnormalities-from bench to bedside.

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Coronary vasomotion abnormalities play important roles in the pathogenesis of ischaemic heart disease, in which endothelial dysfunction and coronary artery spasm are substantially involved. Endothelial vasodilator functions are heterogeneous depending on the vessel size, with relatively greater role

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