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Page 1 de 115 résultats
Efficacy of Quercetin as a potent sensitizer of β2-AR in combating the impairment of fluid clearance in lungs of rats under hypoxia.
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Hypoxia-inducible factor-1 (HIF-1) pathway activation by quercetin in human lens epithelial cells.
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Quercetin is a dietary bioflavonoid which has been shown to inhibit lens opacification in a number of models of cataract. The objectives of this study were to determine gene expression changes in human lens epithelial cells in response to quercetin and to investigate in detail the mechanisms
Quercetin activates an angiogenic pathway, hypoxia inducible factor (HIF)-1-vascular endothelial growth factor, by inhibiting HIF-prolyl hydroxylase: a structural analysis of quercetin for inhibiting HIF-prolyl hydroxylase.
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We investigated a molecular mechanism underlying quercetin-mediated amelioration of colonic mucosal injury and analyzed chemical structure contributing to the quercetin's effect. Quercetin up-regulated vascular endothelial growth factor (VEGF), an ulcer healing factor, not only in colon epithelial
The flavonoid quercetin induces hypoxia-inducible factor-1alpha (HIF-1alpha) and inhibits cell proliferation by depleting intracellular iron.
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Quercetin, a flavonoid with anti-oxidant, metal chelating, kinase modulating and anti-proliferative properties, can induce hypoxia-inducible factor-1alpha (HIF-1alpha) in normoxia, but its mechanism of action has not been determined. In this study we characterized the induction of HIF-1alpha and the
[The effect of quercetin on the metabolic processes in combined body exposure to hypoxia and hyperthermia].
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Quercetin given in a dose of 100 mg/kg 3 hours before acute systemic hypoxia (10 ob%) combined with hyperthermia (43 degrees C) has been demonstrated to prevent a drastic activation of lipid peroxidation and arachidonic acid metabolism parallel to a marked decrease the activity of the body's
[Protective effects of Astragaloside and Quercetin on rat myocardial cells after hypoxia].
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OBJECTIVE
To investigate and compare the protective effects of Astragaloside IV (AST) and Quercetin (QUE) on rat myocardial cells after their exposure to hypoxia, and to determine their dose-effect relationship.
METHODS
Myocardial cells from fetal SD rat were cultured in vitro and divided into 7
Prophylactic efficacy of Quercetin in ameliorating the hypoxia induced vascular leakage in lungs of rats.
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The objective of the study was to find out the prophylactic efficacy of Quercetin in ameliorating the hypoxia induced vascular leakage in lungs of rats. Male SD rats received different doses of quercetin @ 25mg, 50mg, 100mg and 200mg/Kg BW, 1h prior to hypobaric hypoxia exposure (7,620m, for 6h).
Quercetin enhances hypoxia-mediated apoptosis via direct inhibition of AMPK activity in HCT116 colon cancer.
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Tumor hypoxia is considered the best validated target in clinical oncology because of its significant contribution to chemotherapy failure and drug resistance. As an approach to target hypoxia, we assessed the potential of quercetin, a flavonoid widely distributed in plants, as a anticancer agent
The IRE1α-XBP1 pathway function in hypoxia-induced pulmonary vascular remodeling, is upregulated by quercetin, inhibits apoptosis and partially reverses the effect of quercetin in PASMCs.
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Hypoxia is a common cause of pulmonary vascular remodeling and endoplasmic reticulum stress (ERS). Upon ER stress, the unfolded protein response (UPR) which activates the IRE1α, PERK and ATF6 signaling pathways is activated to cope with ERS in mammalian cells; however, the role of the three UPR arms
Quercetin induces protective autophagy in gastric cancer cells: involvement of Akt-mTOR- and hypoxia-induced factor 1α-mediated signaling.
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Quercetin, a dietary antioxidant present in fruits and vegetables, is a promising cancer chemopreventive agent that inhibits tumor promotion by inducing cell cycle arrest and promoting apoptotic cell death. In this study, we examined the biological activities of quercetin against gastric cancer. Our
Quercetin induces autophagy via FOXO1-dependent pathways and autophagy suppression enhances quercetin-induced apoptosis in PASMCs in hypoxia.
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Quercetin, an important dietary flavonoid has been demonstrated to potentially reverse or even prevent pulmonary arterial hypertension (PAH) progression. However, the effects of quercetin on apoptosis and autophagy in pulmonary arterial smooth muscle cells (PASMCs) have not yet been clearly
Nanoencapsulated Quercetin Improves Cardioprotection during Hypoxia-Reoxygenation Injury through Preservation of Mitochondrial Function.
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The effective delivery of antioxidants to the cells is hindered by their high metabolization rate. In this work, quercetin was encapsulated in poly(lactic-co-glycolic) acid (PLGA) nanoparticles. They were characterized in terms of its physicochemical properties (particle size distribution,
Quercetin protects PC-12 cells against hypoxia injury by down-regulation of miR-122.
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A possible therapeutic potential of quercetin through inhibition of μ-calpain in hypoxia induced neuronal injury: a molecular dynamics simulation study.
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The neuroprotective property of quercetin is well reported against hypoxia and ischemia in past studies. This property of quercetin lies in its antioxidant property with blood-brain barrier permeability and anti-inflammatory capabilities. µ-Calpain, a calcium ion activated intracellular cysteine
Naringenin and quercetin reverse the effect of hypobaric hypoxia and elicit neuroprotective response in the murine model.
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Exposure to high-altitude results in hypobaric hypoxia which is considered as an acute physiological stress. This condition often leads to high-altitude illnesses such as high-altitude cerebral edema, high altitude pulmonary edema and hypoxic muscle weakness. Hypoxic injuries can be prevented by
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