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Effects of the prostanoid EP3-receptor agonists M&B 28767 and GR 63799X on infarct size caused by regional myocardial ischaemia in the anaesthetized rat.

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1. This study investigates the effects of two agonists of the prostanoid EP3-receptor (M&B 28767 and GR 63799X) on the infarct size caused by regional myocardial ischaemia and reperfusion in the anaesthetized rat. 2. One hundred and sixty-seven, male Wistar rats were anaesthetized (thiopentone, 120

Staurosporine-induced apoptosis in cardiomyocytes: A potential role of caspase-3.

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Cardiomyocyte apoptosis has been demonstrated in animal models of cardiac injury as well as in patients with congestive heart failure or acute myocardial infarction. Therefore, apoptosis has been proposed as an important process in cardiac remodeling and progression of myocardial dysfunction.

Infarct-induced steroidogenic acute regulatory protein: a survival role in cardiac fibroblasts.

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Steroidogenic acute regulatory protein (StAR) is indispensable for steroid hormone synthesis in the adrenal cortex and the gonadal tissues. This study reveals that StAR is also expressed at high levels in nonsteroidogenic cardiac fibroblasts confined to the left ventricle of mouse heart examined 3

Monocyte derivatives promote angiogenesis and myocyte survival in a model of myocardial infarction.

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In this study, we have investigated the hypothesis that previously reported beneficial effect of peripheral blood mononuclear cells cultured under angiogenic conditions on cardiovascular function following ischemia is not limited to EPCs but also to monocytes contained therein. We first purified and

Limitation of myocardial infarct size by adenosine A1 receptor activation is abolished by protein kinase C inhibitors in the rabbit.

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OBJECTIVE The aim was to test whether infarct size limitation by adenosine A1 receptor activation is mediated by protein kinase C. METHODS In the first series of experiments, myocardial infarction was induced in rabbits under pentobarbitone anaesthesia by 30 min coronary artery occlusion and 3 h

Potent inhibitors of amyloid β fibrillization, 4,5-dianilinophthalimide and staurosporine aglycone, enhance degradation of preformed aggregates of mutant Notch3.

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Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is caused by mutations in human NOTCH3. We have recently reported that mutant Notch3 shows a greater propensity to form aggregates, and these aggregates resist degradation, leading to accumulation in

No prevention of ischemic preconditioning by the protein kinase C inhibitor staurosporine in swine.

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The delay of infarct size development by ischemic preconditioning involves the activation of protein kinase C in rats and rabbits. In dogs the role of protein kinase C in ischemic preconditioning is controversial. We investigated whether or not the activation of protein kinase C is a prerequisite

Roles of tyrosine kinase and protein kinase C in infarct size limitation by repetitive ischemic preconditioning in the rat.

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In this study, we examined the possibility that infarct-size limitation by repetitive preconditioning (PC) is achieved by activation of both protein kinase C (PKC) and tyrosine kinase. In addition, we assessed whether such kinase activation is triggered by angiotensin II type 1 (AT1) and

Selective activation of the prostanoid EP(3) receptor reduces myocardial infarct size in rodents.

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The cardioprotective effects of E-type prostaglandins (EPs) have been attributed to vasodilatation, inhibition of platelet and neutrophil function (EP(2) mediated), and an unknown "cytoprotective effect." We have hypothesized that selective activation of EP(3) receptors may cause cardioprotection.

The transcription factor E2F1 modulates apoptosis of neurons.

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The transcription factor E2F1 is known to mediate apoptosis in isolated quiescent and postmitotic cardiac myocytes, and its absence decreases the size of brain infarction following cerebral ischemia. To demonstrate directly that E2F1 modulates neuronal apoptosis, we used cultured cortical neurons to

Erythropoietin, modified to not stimulate red blood cell production, retains its cardioprotective properties.

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Erythropoietin (EPO), a hematopoietic cytokine, possesses strong antiapoptotic, tissue-protective properties. For clinical applications, it is desirable to separate the hematopoietic and tissue-protective properties. Recently introduced carbamylated erythropoietin (CEPO) does not stimulate the

Suppression of reperfusion arrhythmias by preconditioning is inhibited by an ATP-sensitive potassium channel blocker, 5-hydroxydecanoate, but not by protein kinase C blockers in the rat.

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It has been suggested that preconditioning (PC) against infarction in the rat heart is mediated by opening of ATP-sensitive potassium (KATP) channels, which may be induced by receptor-triggered activation of protein kinase C (PKC). However, the mechanism of suppression of reperfusion arrhythmias by

A secretory phospholipase A2-mediated neuroprotection and anti-apoptosis.

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BACKGROUND Phospholipase A2 liberates free fatty acids and lysophospholipids upon hydrolysis of phospholipids and these products are often associated with detrimental effects such as inflammation and cerebral ischemia. The neuroprotective effect of neutral phospholipase from snake venom has been

Neuroprotective effects of NV-31, a bilobalide-derived compound: evidence for an antioxidative mechanism.

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In previous studies we have already shown that the extract of Ginkgo biloba, and some of its constituents, such as ginkgolide B and bilobalide, protected cultured neurons against apoptotic and excitotoxic damage and reduced the infarct volume after focal cerebral ischemia in mice and rats. In this

Pharmacological studies supporting the therapeutic use of Ginkgo biloba extract for Alzheimer's disease.

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The standardized Ginkgo biloba extract EGb 761(definition see editorial) has been shown to produce neuroprotective effects in different in vivo and in vitro models. Since EGb 761 is a complex mixture containing flavonoid glycosides, terpene lactones (non-flavone fraction) and various other

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