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cerebral infarction/хипоксия
Линкът е запазен в клипборда
Страница 1 от 1435 резултата
[Activation of autophagy pathway in hippocampus and deterioration of learning and memory ability by intermittent hypoxia in rats after cerebral ischemia].
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Objective To investigate the effects of different duration of intermittent hypoxia on the autophagy pathway in the hippocampus and the learning and memory ability after cerebral ischemia in rats. Methods 100 male Wistar rats were randomly divided into sham operation (SO) group, ischemia/reperfusion
Protective effects of kamikihi-to, a traditional Chinese medicine, against cerebral ischemia, hypoxia and anoxia in mice and gerbils.
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The protective effects of Kamikihi-To (KMK), a traditional Chinese medicine, against cerebral ischemia, hypoxia and anoxia were investigated with various experimental models in mice and gerbils. KMK (2.0 g/kg/day, p.o. for 5 days) significantly prolonged the survival time of mice subjected to
Rapid noninvasive continuous monitoring of oxygenation in cerebral ischemia and hypoxia.
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The brain is most sensitively dependent on oxygen to maintain its normal function. Methods to assess the degree of its oxygenation have generally been invasive and indirect. Rapid assessment of brain oxygenation is particularly vital during cerebrospinal ischemia and hypoxia. We have developed a
A comparative study of EEG suppressions induced by global cerebral ischemia and anoxia.
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Cerebral ischemia and anoxia induce sequential changes that include ionic redistribution, alteration of enzimatic reactions governing metabolism and intracellular signaling. Despite high technology instrumentation including positron emission, tomography and magnetic resonance imaging used to unravel
Changes of hypoxia-inducible factor-1 signaling and the effect of cilostazol in chronic cerebral ischemia.
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Hypoxia-inducible factor-1 and its specific target gene heme oxygenase-1, are involved in acute cerebral ischemia. However, very few studies have examined in detail the changes in the hypoxia-inducible factor-1/heme oxygenase-1 signaling pathway in chronic cerebral ischemia. In this study, a rat
[Effect of obstructive sleep apnea hypoxia on learning memory capacity after cerebral ischemia-reperfusion in rats].
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OBJECTIVE
To investigate the effect of obstructive sleep apnea hypoxia on learning memory capacity in rat after ischemia.
METHODS
Eighty healthy male wister rats were randomly divided into: sham operation group (SO group, n=20), merely ischemia group (I/R group, n=20), and obstructive sleep apnea
Desferoxamine preconditioning protects against cerebral ischemia in rats by inducing expressions of hypoxia inducible factor 1 alpha and erythropoietin.
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OBJECTIVE
To investigate whether desferoxamine (DFO) preconditioning can induce tolerance against cerebral ischemia and its effect on the expression of hypoxia inducible factor 1alpha (HIF-1alpha) and erythropoietin (EPO) in vivo and in vitro.
METHODS
Rat model of cerebral ischemia was established
Hypoxia-inducible factor-1alpha DNA induced angiogenesis in a rat cerebral ischemia model.
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BACKGROUND
Hypoxia-inducible factor-1 (HIF-1) is a transcription factor that regulates the adaptive response to hypoxia in mammalian cells. It consists of a regulatory subunit HIF-1alpha, which accumulates under hypoxic conditions, and a constitutively expressed subunit, HIF-1beta. In this study, we
Early expressions of hypoxia-inducible factor 1alpha and vascular endothelial growth factor increase the neuronal plasticity of activated endogenous neural stem cells after focal cerebral ischemia.
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Endogenous neural stem cells become "activated" after neuronal injury, but the activation sequence and fate of endogenous neural stem cells in focal cerebral ischemia model are little known. We evaluated the relationships between neural stem cells and hypoxia-inducible factor-1α and vascular
[Effects of NC-1100, a calcium channel blocker, on experimental cerebral ischemia/anoxia in rodents].
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The anti-ischemic and anoxic effects of NC-1100, a piperazine type calcium channel blocker, were investigated in various cerebral ischemia and anoxia models in mice, gerbils and guinea pigs. Minimal effective doses of NC-1100 were 8 mg/kg, i.p. and 30 mg/kg, p.o. for KCN-induced anoxia; 16 mg/kg,
Effects of nimodipine on multiunit activity of several brain structures following acute global cerebral ischemia-anoxia in cats.
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The effects of nimodipine, a 1,4-dihydropyridine calcium channel blocker, on multiunit activity (MUA) of several brain structures were investigated in cats during 6 h immediately following acute global cerebral ischemia-anoxia induced by a 10 min cardiorespiratory arrest (CRA), as well as in cats
The value of phase-contrast magnetic resonance angiography of the circle of Willis in predicting cerebral ischemia-hypoxia (shunt need) during carotid endarterectomy.
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BACKGROUND
Cerebral perfusion during carotid cross-clamping depends on collateral function of the circle of Willis. The aim of this study was to determine the value of 3D Phase-Contrast (3D PC) MR angiography in predicting pre-operatively the need of shunting.
METHODS
3D PC MR angiography were
[Expression of mTOR/autophagy pathway in the hippocampus following cerebral ischemia/reperfusion injure in intermittent hypoxia rats].
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Objective: To compare the changes in the expression of mTOR and beclin1 in the hippocampus of normal rats and intermittent hypoxia rats with cerebral ischemia/reperfusion, so as to explore the roles of mTOR/autophagy pathway in global cerebral ischemia/reperfusion injure aggravated by intermittent
Cerebral circulatory responses to hypercapnia and hypoxia in the recovery period following complete and incomplete cerebral ischemia in the rat.
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In this study we examined the reactions of cerebral vessels to hypercapnia and hypoxia during the recovery period following cerebral ischemia. We used ventilated, lightly anesthetized rats and induced complete ischemia by CSF compression, incomplete ischemia by bilateral carotid occlusion combined
[Effect of efonidipine hydrochloride, a calcium channel blocker, on the experimental cerebral ischemia/anoxia].
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The anti-ischemic and anti-anoxic effects of efonidipine, a dihydropyridine calcium antagonist, were studied in several models for cerebral ischemia and anoxia in mice and rats, and the effects were compared with those of nicardipine and flunarizine. Both efonidipine and flunarizine showed
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