PubMed Journals Articles About "Ex Vivo Cultured Adult Allogenic MSCs In Ischemic Cerebral Stroke" RSS

18:35 EDT 18th August 2018 | BioPortfolio

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Showing "Vivo Cultured Adult Allogenic MSCs Ischemic Cerebral Stroke" PubMed Articles 1–25 of 16,000+

cPKCγ alleviates ischemic injury through modulating synapsin Ia/b phosphorylation in neurons of mice.

Conventional protein kinase C (cPKC)γ and synapsin Ia/b have been implicated in the development of ischemic stroke, but their relationships and functions are unclear. In the present study, the oxygen-glucose deprivation (OGD)-induced ischemic insult in primary cultured cortical neurons in vitro and middle cerebral artery occlusion (MCAO)-induced ischemic stroke model in vivo were used to elucidate the function of cPKCγ and its modulation on synapsin Ia/b phosphorylation in ischemic stroke. We found that c...

Cerebral autoregulatory performance and the cerebrovascular response to head-of-bed positioning in acute ischemic stroke.

Cerebrovascular responses to head-of-bed positioning in patients with acute ischemic stroke are heterogeneous, questioning applicability of general recommendations on head positioning. Cerebral autoregulation is impaired to various extents after acute stroke, while it is unknown whether this affects cerebral perfusion during posture change. We aimed to elucidate whether the cerebrovascular response to head position manipulation depends on autoregulatory performance in ischemic stroke patients.

XQ-1H protects against ischemic stroke by regulating microglia polarization through PPARγ pathway in mice.

Cerebral ischemic and reperfusion injury often accompany with inflammation, and lead to severe neuronal damage, which further result in neurological disorders and memory disorders. In this study, we researched XQ-1H, a novel derivative of ginkgolide B, protecting against ischemic stroke in mice through regulation of microglia polarization. Middle cerebral artery occlusion (MCAO)/reperfusion in mice is applied to mimic ischemic stroke in vivo. Immediately after MCAO, mice are intragastric administrated with ...

Age and Sex Are Critical Factors in Ischemic Stroke Pathology.

Ischemic stroke is a devastating brain injury, resulting in high mortality and significant loss-of-function. Understanding the pathophysiology of ischemic stroke risk, mortality and functional loss is critical to novel therapeutic development. Age and sex have a complex and interactive effect on ischemic stroke risk and pathophysiology. Aging is the strongest non-modifiable risk factor for ischemic stroke, and aged stroke patients have higher mortality, morbidity and poorer functional recovery than their yo...

LncRNA FIRRE/NF-kB feedback loop contributes to OGD/R injury of cerebral microglial cells.

Stroke is one of the leading causes for serious long-term neurological disability. LncRNAs have been investigated to be dysregulated in ischemic stroke. However, the underlying mechanisms of some specific lncRNAs have not been clearly clarified. To determine lncRNA-mediated regulatory mechanism in ischemic stroke, we constructed OGD/R injury model of cerebral microglial cells. Microarray analysis was carried out and analyzed that lncRNA functional intergenic repeating RNA element (FIRRE) was associated with...

Clinical and Imaging Predictors of Recurrent Ischemic Stroke: A Systematic Review and Meta-Analysis.

Predictors of recurrent ischemic stroke are less well known in patients with a recent ischemic stroke than in patients with transient ischemic attack (TIA). We identified clinical and radiological factors for predicting recurrent ischemic stroke in patients with recent ischemic stroke.

Ginkgolide K Promotes Angiogenesis in a middle cerebral artery occlusion mouse model via activating JAK2/STAT3 Pathway.

Ginkgolide K (GK) is a new compound extracted from the leaves of Ginkgo biloba, which has been recognized to exert anti-oxidative stress and neuroprotective effect on ischemic stroke. While whether it plays an enhanced effect on angiogenesis during ischemic stroke remains unknown. The aim of this study was to investigate the effect of ginkgolide K on promoting angiogenesis as well as the protective mechanism after cerebral ischemia-reperfusion. Using the transient middle cerebral artery occlusion (tMCAO) mo...

Angiography with the 256-multislice spiral computed tomography and its application in evaluating atherosclerotic plaque and cerebral ischemia.

Ulceration of carotid arterial plaque is associated with cerebral events. Detection of ulcerated plaques will benefit patient from stroke and other ischemic events. The aim of this study was to evaluate morphology of atherosclerotic plaques in the carotid arteries and to assess its clinical impact in predicting cerebral events.A total of 386 patients were examined with 256-multislice spiral computed tomographic angiography (MSCTA).It was found that 356 of the 386 patients had cerebral ischemic symptoms. Spe...

Interleukin-33 protects ischemic brain injury by regulating specific microglial activities.

Interleukin-33 (IL-33), a novel member of the IL-1 family, expressed in many tissue and cell types, and is involved in inflammation and immune functions. Previous studies suggest that IL-33 may play a role in ischemic stroke. We tried to investigate the role of IL-33 in cerebral ischemia-reperfusion-induced injury and its underlying mechanism. Our data indicated that IL-33 deficiency exacerbated the neurological dysfunction caused by cerebral ischemia-reperfusion injury in mice and led to the formation of l...

Correction for Delay and Dispersion Results in More Accurate Cerebral Blood Flow Ischemic Core Measurement in Acute Stroke.

This study aimed to assess how the ischemic core measured by perfusion computed tomography (CTP) was affected by the delay and dispersion effect.

Inhibition of immunoproteasome promotes angiogenesis via enhancing hypoxia-inducible factor-1α abundance in rats following focal cerebral ischaemia.

Angiogenesis after ischemic stroke contributes to the restoration of blood supply in the ischemic zone. Strategies to improve angiogenesis may facilitate the function recovery after stroke. Growing evidence shows that proteasome inhibitors enhance angioneurogenesis and induces a long-term neuroprotection after cerebral ischemia in rodents' models. We have previously reported that inhibition of the immunoproteasome subunit low molecular mass peptide 2 (LMP2) offers a strong neuroprotection in ischemic stroke...

Cerebral ischemia induces angiogenesis in the peri-infarct regions via Notch1 signaling activation.

The Notch1 signaling pathway is considered as one of important regulators of angiogenesis during development, but its role in cerebral ischemia-induced angiogenesis is less well understood. Here, we used human and rodent brains to explore whether Notch1 signaling was involved in the angiogenesis after focal cerebral ischemia. Using immunohistochemistry on surgically resected ischemic stroke brain tissue, we found that the area, volume, and length of the blood vessels in the peri-infarct regions were signifi...

Up-regulation of miR-122 protects against neuronal cell death in ischemic stroke through the heat shock protein 70-dependent NF-κB pathway by targeting FOXO3.

Dysfunction of the microRNA (miR) network has been emerging as a main regulator in ischemic stroke. Recently, studies have linked the deregulation of miR-122 to ischemic stroke. However, the specific role and molecular mechanism of miR-122 in ischemic stroke remain to be further investigated. Here, we found that miR-122 was decreased in mouse N2A neuroblastoma (N2A) cells after oxygen-glucose deprivation (OGD) and mouse brain after transient middle cerebral artery occlusion (MCAO). OGD treatment significant...

A Preventive Injection of Endothelial Progenitor Cells Prolongs Lifespan in Stroke-prone Spontaneously Hypertensive Rats.

There is a pressing need for new approaches to preventing stroke. Endothelial progenitor cells (EPCs) promote vascular repair and revascularization in the ischemic brain. This study sought to evaluate whether preventive delivery of EPCs could prevent or protect against stroke. Stroke-prone spontaneously hypertensive rats (SHR-SP) received a single injection of EPCs, and their survival time was monitored. In addition, at 28 and/or 42 days after a single injection of EPCs, SHR-SP and mice were subjected to ce...

Molecular Mechanism Exploration of Ischemic Stroke by Integrating mRNA and miRNA Expression Profiles.

Stroke is one of the leading causes of death worldwide, and ischemic stroke accounts for about 80 percent of all cases. Ischemic stroke is usually caused by a blockage in an artery to the brain. However, its molecular mechanisms remain largely unclear. The integration of mRNA and miRNA expression patterns is an effective strategy to investigate the potential molecular mechanisms of ischemic stroke in posttranscriptional regulation level.

Intravenously Delivered Allogeneic Mesenchymal Stem Cells Bidirectionally Regulate Inflammation and Induce Neurotrophic Effects in Distal Middle Cerebral Artery Occlusion Rats Within the First 7 Days After Stroke.

Neurotrophic effects and immunosuppression are the main therapeutic mechanisms of mesenchymal stem cells (MSCs) in stroke treatment. Neurotrophins are produced by graft cells, host neurons, astrocytes, and even microglia/macrophages. Meanwhile, MSCs can increase inflammation if they are not sufficiently induced by pro-inflammatory cytokines. We examined whether intravenously transplanted bone marrow MSCs (BM-MSCs) increase inflammation in distal middle cerebral artery occlusion (dMCAO) rats, how long the in...

Intracranial Hypertension Related to Cerebral Venous Thrombosis; and Acute Ischemic Stroke with Micro-infarcts Associated with IgG4-Related Disease.

IgG4-related systemic disease (IgG4-RD) is characterized by an inflammatory reaction rich in IgG4-positive plasma cells, affecting multiple organs. This report describes a case who was diagnosed with IgG4-RD, having cerebral venous thrombosis and a subsequent acute ischemic stroke of undetermined cause. The 47-year-old woman presented with headache, visual disturbance and eyelid swelling and two years later she was admitted with acute attacks of mild left lower limb sensory-motor monoparesis. Indirect immun...

The ratio between cerebral blood flow and Tmax predicts the quality of collaterals in acute ischemic stroke.

In acute ischemic stroke the status of collateral circulation is a critical factor in determining outcome. We propose a less invasive alternative to digital subtraction angiography for evaluating collaterals based on dynamic-susceptibility contrast magnetic resonance imaging.

The Role of Alpha-Lipoic Acid in the Pathomechanism of Acute Ischemic Stroke.

Ischemic stroke results in increased cerebral infarction, neurological deficits and neuroinflammation. The underlying mechanisms involving the anti-inflammatory and neuroprotective properties of α-Lipoic acid (α-LA) remain poorly understood. Herein, we investigated the potential role of α-LA in a middle cerebral artery occlusion (MCAO) rat model and an in vitro lipopolysaccharide (LPS)-induced microglia inflammation model.

Glutamate metabolism in cerebral mitochondria after ischemia and post-ischemic recovery during aging: relationships with brain energy metabolism.

Glutamate is involved in cerebral ischemic injury, but its role has not been completely clarified and studies are required to understand how minimize its detrimental effects, contemporarily boosting the positive ones. In fact, glutamate is not only a neurotransmitter, but primarily a key metabolite for brain bioenergetics. Thus, we investigated the relationships between glutamate and brain energy metabolism in an in vivo model of complete cerebral ischemia of 15 min and during post-ischemic recovery after 1...

Prognostic significance of serum cystatin C in acute ischemic stroke patients according to lipid component levels.

Serum cystatin C (CysC) is associated with the risk of ischemic stroke and may predict cardiovascular events and death after ischemic stroke onset. However, the association between serum CysC and functional outcome in ischemic stroke patients remains unclear, and whether lipid component level influences the relationship between them has not been studied.

Transcriptome Analysis Reveals Intermittent Fasting-Induced Genetic Changes in Ischemic Stroke.

Genetic changes due to dietary intervention in the form of either calorie restriction (CR) or intermittent fasting (IF) are not reported in detail until now. However, it is well established that both CR and IF extend the lifespan and protect against neurodegenerative diseases and stroke. The current research aims were first to describe the transcriptomic changes in brains of IF mice and, second, to determine whether IF induces extensive transcriptomic changes following ischemic stroke to protect the brain f...

Alteration of mean platelet volume in the pathogenesis of acute ischemic stroke: cause or consequence?

Platelets have a crucial role on vascular disease which are involved in pathogenesis of ischemic stroke. Platelet size is measured as mean platelet volume (MPV) and is a marker of platelet activity. Platelets contain more dense granules as the size increases and produce more serotonin and tromboglobulin (b-TG) than small platelets. In this study, the alteration of MPV values were investigated in patients with acute stroke, who had MPV values before stroke, during acute ischemic stroke and 7 days after the s...

Timely Visualization of the Collaterals Formed during Acute Ischemic Stroke with Fe O Nanoparticle-based MR Imaging Probe.

Ischemic stroke is one of the major leading causes for long-term disability and mortality. Collateral vessels provide an alternative pathway to protect the brain against ischemic injury after arterial occlusion. Aiming at visualizing the collaterals occurring during acute ischemic stroke, an integrin α β -specific Fe O -Arg-Gly-Asp (RGD) nanoprobe is prepared for magnetic resonance imaging (MRI) of the collaterals. Rat models are constructed by occluding the middle cerebral artery for imaging studies of c...

Cerebral Haemodynamics following Acute Ischaemic Stroke: Effects of Stroke Severity and Stroke Subtype.

Acute ischaemic stroke (AIS) patients often show impaired cerebral autoregulation (CA). We tested the hypothesis that CA impairment and other alterations in cerebral haemodynamics are associated with stroke subtype and severity.

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