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Page 1 de 21 résultats
Increased expression and altered subcellular distribution of PKC-δ and PKC-ɛ in pulmonary arteries exposed to hypoxia and 15-HETE.
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15-hydroxyeicosatetraenoic acid (15-HETE), a product of arachidonic acid (AA) catalyzed by 15-lipoxygenase (15-LOX), is an important mediator of hypoxic pulmonary vasoconstriction (HPV). We have previously reported that 15-HETE-induced pulmonary vasoconstriction occurs via protein kinase C (PKC)
Targeting the hypoxia inducible factor pathway with mitochondrial uncouplers.
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Hypoxia inducible factor-1 (HIF-1) is central to most adaptation responses of tumors to hypoxia, and consists of a hypoxia inducible HIF-1alpha or -2alpha subunit, and a constitutively expressed HIF-1beta subunit. Previously, mitochondrial uncouplers, rottlerin and FCCP, were shown to increase the
Role of PKC-delta during hypoxia in heart-derived H9c2 cells.
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In the present study, we investigated the role of protein kinase C (PKC) isoforms during hypoxia in heart-derived H9c2 cells. Hypoxia caused a rapid translocation of PKC-delta from soluble to particulate fraction and a downregulation of PKC-epsilon and PKC-zeta, whereas PKC-alpha and PKC-beta I
Role of PKCbetaII and PKCdelta in blood-brain barrier permeability during aglycemic hypoxia.
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Blood-brain barrier (BBB) dysfunction contributes to the pathophysiology of cerebrovascular diseases such as stroke. In the present study, we investigated the role of PKC isoforms in aglycemic hypoxia-induced hyperpermeability using an in vitro model of the BBB consisting of mouse bEnd.3 cells.
PKC-delta inhibitors sustain self-renewal of mouse embryonic stem cells under hypoxia in vitro.
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Under hypoxia, mouse embryonic stem cells (mESCs) lose their self-renewal activity and display an early differentiated morphology mediated by the hypoxia-inducible factor-1 alpha (HIF-1 alpha). Previous studies have demonstrated that PKC-delta is activated by hypoxia and increases the protein
Translocation of protein kinase C δ contributes to the moderately high glucose-, but not hypoxia-induced proliferation in primary cultured human retinal endothelial cells.
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Diabetic retinopathy is one of the most common complications in patients with diabetes and affects ~75% of them within 15 years of the onset of the disease. Activation of protein kinase C (PKC) is a key feature of diabetes mellitus and may be involved in the pathogenesis of diabetic retinopathy. The
[CHRONIC CONTINUOUS NOR-MOBARIC HYPOXIA AUGMENTS CELL TOLERANCE TO ANOXIA(REOXYGE-NATION: THE ROLE OF PROTEIN KINASES].
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The study evaluated the role of protein kinase C, PI3-kinase and tyrosine kinases in the cardi-oprotective effect of the chronic continuous normobaric hypoxia (CCNH). Adaptation to CCNH was provided by placing the rats in an atmosphere with a low content of O2 (12 %) during 21 days.
Intracellular Kinase Mechanism of the Cytoprotective Action of Adaptation to Chronic Hypoxia in Anoxia/Reoxygenation of Cardiomyocytes
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On the model of anoxia/reoxygenation of isolated cardiomyocytes, we studied the role of kinases in the implementation of the cytoprotective effect of chronic continuous normobaric hypoxia (21 days on continuous exposure of rats at 12% O2). Anoxia/reoxygenation of cardiomyocytes from
Eucapnic intermittent hypoxia augments endothelin-1 vasoconstriction in rats: role of PKCdelta.
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We reported previously that simulating sleep apnea by exposing rats to eucapnic intermittent hypoxia (E-IH) causes endothelin-dependent hypertension and increases constrictor sensitivity to endothelin-1 (ET-1). In addition, augmented ET-1-induced constriction in small mesenteric arteries (sMA) is
Role for PKCβ in enhanced endothelin-1-induced pulmonary vasoconstrictor reactivity following intermittent hypoxia.
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Intermittent hypoxia (IH) resulting from sleep apnea causes both systemic and pulmonary hypertension. Enhanced endothelin-1 (ET-1)-induced vasoconstrictor reactivity is thought to play a central role in the systemic hypertensive response to IH. However, whether IH similarly increases pulmonary
PKCδ/midkine pathway drives hypoxia-induced proliferation and differentiation of human lung epithelial cells.
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Epithelial cells are key players in the pathobiology of numerous hypoxia-induced lung diseases. The mechanisms mediating such hypoxic responses of epithelial cells are not well characterized. Earlier studies reported that hypoxia stimulates protein kinase C (PKC)δ activation in renal cancer cells
Wenxin Granule Ameliorates Hypoxia/Reoxygenation-Induced Oxidative Stress in Mitochondria via the PKC- δ/NOX2/ROS Pathway in H9c2 Cells
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Myocardial infarction and following reperfusion therapy-induced myocardial ischemia/reperfusion (I/R) injury have been recognized as an important subject of cardiovascular disease with high mortality. As the antiarrhythmic agent, Wenxin Granule (WXG) is widely used to arrhythmia and heart failure.
Protein kinase epsilon dampens the secretory response of model intestinal epithelia during ischemia.
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BACKGROUND
Luminal fluid sequestration and diarrhea are early manifestations of mesenteric ischemia. This can be modeled in vitro with the use of T84 intestinal epithelia, where ischemia induces Cl(-) secretion with adenosine-mediated autocrine feedback. Protein kinase C (PKC) regulates epithelial
Up-regulation and redistribution of protein kinase C-δ in chronically hypoxic heart.
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The adaptation to chronic hypoxia confers long-lasting cardiac protection against acute ischemia-reperfusion injury. Protein kinase C (PKC) appears to play a role in the cardioprotective mechanism but the involvement of individual PKC isoforms remains unclear. The aim of this study was to examine
Increased expression and altered subcellular distribution of PKC-delta in chronically hypoxic rat myocardium: involvement in cardioprotection.
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We examined the role of protein kinase C (PKC) in the cardioprotective mechanism induced by long-term adaptation to chronic intermittent hypoxia. Adult male Wistar rats were exposed to hypobaric hypoxia of 7,000 m for 8 h/day, 5 days/wk; the total number of exposures was 24-32. A control group was
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