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Source: Molecular Neurobiology
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Total 278 results found since Jan 2013.
Imeglimin Is Neuroprotective Against Ischemic Brain Injury in Rats —a Study Evaluating Neuroinflammation and Mitochondrial Functions
This study demonstrates that post-stroke treatment with imeglimin exerts neuroprotec tive effects by reducing infarct size and neuronal loss possibly via the resolution of neuroinflammation and partly via inhibition of mPTP opening in neurons and astrocytes.Graphical abstract
Source: Molecular Neurobiology - March 7, 2022 Category: Neurology Source Type: research
Correction to: Application of Metabolomics to the Discovery of Biomarkers for Ischemic Stroke in the Murine Model: a Comparison with the Clinical Results
Source: Molecular Neurobiology - March 5, 2022 Category: Neurology Source Type: research
Post-stroke Impairment of the Blood –Brain Barrier and Perifocal Vasogenic Edema Is Alleviated by Endovascular Mesenchymal Stem Cell Administration: Modulation of the PKCδ/MMP9/AQP4-Mediated Pathway
AbstractPost-stroke edema and upregulation of aquaporin 4 (AQP4) water transport channels play a significant role in the progression of stroke pathology and deteriorating stroke outcomes. Prior studies from our lab have demonstrated the safety and efficacy of intra-arterial (IA) 1 × 105 mesenchymal stem cells (MSCs) administration post-stroke towards functional restoration and neuroprotection. Protein kinases have been reported to be involved in the signaling cascade of edema, with evidence supporting both its upregulation and downregulation at 24 h post-stroke. Among different protein kinase C (PKC) isoforms, the ...
Source: Molecular Neurobiology - February 21, 2022 Category: Neurology Source Type: research
ADAMTS9-AS2 Promotes Angiogenesis of Brain Microvascular Endothelial Cells Through Regulating miR-185-5p/IGFBP-2 Axis in Ischemic Stroke
AbstractIschemic stroke is a common disease threatening human health. ADAMTS9-AS2 is a lncRNA that has been widely studied in tumors, but not in ischemic stroke. The purpose of this study was to investigate the role and potential molecular mechanism of ADAMTS9-AS2 in endothelial cell function after ischemic stroke in vivo and in vitro. The results showed that ADAMTS9-AS2 was decreased in the plasma of acute ischemic stroke (AIS) patients and in the brain tissue and plasma of MCAO mice, and the low expression of ADAMTS9-AS2 was associated with the increase in infarct size. Besides, compared with the control group, MCAO trea...
Source: Molecular Neurobiology - January 31, 2022 Category: Neurology Source Type: research
GSK-126 Protects CA1 Neurons from H3K27me3-Mediated Apoptosis in Cerebral Ischemia
AbstractEpigenetics, including histone modifications, play a significant role in central nervous system diseases, but the underlying mechanism remains to be elucidated. The aim of this study was to evaluate the role of H3K27me3 in regulating transcriptomic and pathogenic mechanisms following global ischemic stroke. Here, we found that in vivo ischemic/reperfusion (I/R) injury induced marked upregulation of H3K27me3 in the hippocampus. The administration of GSK-126 to rat brains decreased the levels of H3K27me3 in the hippocampus and reduced neuronal apoptosis after experimental stroke. Furthermore, ChIP-seq data demonstrat...
Source: Molecular Neurobiology - January 29, 2022 Category: Neurology Source Type: research
In Vitro Oxygen Glucose Deprivation Model of Ischemic Stroke: A Proteomics-Driven Systems Biological Perspective
AbstractOxygen glucose deprivation (OGD) of brain cells is the commonest in vitro model of ischemic stroke that is used extensively for basic and preclinical stroke research. Protein mass spectrometry is one of the most promising and rapidly evolving technologies in biomedical research. A systems-level understanding of cell-type-specific responses to oxygen and glucose deprivation without systemic influence is a prerequisite to delineate the response of the neurovascular unit following ischemic stroke. In this systematic review, we summarize the proteomics studies done on different OGD models. These studies have followed a...
Source: Molecular Neurobiology - January 26, 2022 Category: Neurology Source Type: research
The Two-Pore Domain Potassium Channel TREK-1 Promotes Blood –Brain Barrier Breakdown and Exacerbates Neuronal Death After Focal Cerebral Ischemia in Mice
This study used TREK-1-deficient mice to directly investigate the role of TREK-1 after focal cerebral ischemia. First, immunofluorescence assays in the mouse cerebral cortex indicated that TREK-1 expression was mostly abundant in astrocytes, neurons, and oligodendrocyte precursor cells but was low in myelinating oligodendrocytes, microglia, or endothelial cells. TREK-1 deficiency did not affect brain weight and morphology or the number of neurons, astrocytes, or microglia but did increase glial fibrillary acidic protein (GFAP) expression in astrocytes of the cerebral cortex. The anatomy of the major cerebral vasculature, n...
Source: Molecular Neurobiology - January 24, 2022 Category: Neurology Source Type: research
Sevoflurane Offers Neuroprotection in a Cerebral Ischemia/Reperfusion Injury Rat Model Through the E2F1/EZH2/TIMP2 Regulatory Axis
This study is aimed to delineate the molecular mechanistic actions by which sevoflurane protects against cerebral I/R injury. A rat model of cerebral I/R injury was established and pre-treated with sevoflurane, in which hippocampal neuron apoptosis was found to be repressed and the level of E2F transcription factor 1 (E2F1) was observed to be down-regulated. Then, the up-regulated expression of E2F1 was validated in rats with cerebral I/R injury, responsible for stimulated neuron apoptosis. Further, the binding of E2F1 to enhancer of zeste homolog 2 (EZH2) and EZH2 to tissue inhibitor of metalloproteinases-2 (TIMP2) was id...
Source: Molecular Neurobiology - January 22, 2022 Category: Neurology Source Type: research
Knockdown of circRNA-Memo1 Reduces Hypoxia/Reoxygenation Injury in Human Brain Endothelial Cells Through miRNA-17-5p/SOS1 Axis
AbstractCirc-Memo1 has been proved to be upregulated in ischemia –reperfusion induced acute injury of kidney tissues. However, the potential role of circ-Memo1 in cerebral hypoxia/reoxygenation (H/R) injury is still unclear.Blood samples were collected from 25 ischemic stroke patients and 25 healthy controls. To construct the H/R model, human brain microvascular endothelial cells (HBMVECs) were cultured under the hypoxic condition, followed by reoxygenation. Cell viability was analyzed by MTT assay. Flow cytometry was carried out to examine cell apoptosis. The level of malondialdehyde (MDA) and the activity of superoxide...
Source: Molecular Neurobiology - January 18, 2022 Category: Neurology Source Type: research
Retinoid X Receptor: Cellular and Biochemical Roles of Nuclear Receptor with a Focus on Neuropathological Involvement
AbstractRetinoid X receptors (RXRs) present a subgroup of the nuclear receptor superfamily with particularly high evolutionary conservation of ligand binding domain. The receptor exists in α, β, and γ isotypes that form homo-/heterodimeric complexes with other permissive and non-permissive receptors. While research has identified the biochemical roles of several nuclear receptor family members, the roles of RXRs in various neurological disorders remain relatively under-investigated . RXR acts as ligand-regulated transcription factor, modulating the expression of genes that plays a critical role in mediating several deve...
Source: Molecular Neurobiology - January 11, 2022 Category: Neurology Source Type: research
COX-2/PGE2 Pathway Inhibits the Ferroptosis Induced by Cerebral Ischemia Reperfusion
In conclusion, PGE2 was positively correlated with ferroptosis, inhibition of ferroptosis induced by cerebral I/R can inactivate COX-2/PGE2 pathway, and PGE2 inhibited ferroptosis induced by cerebral I/R, possibly via PGE2 receptor 3 and PGE2 receptor 4.Graphical abstractInhibition of ferroptosis inactivates the COX-2/PGE2 pathway. Cerebral ischemia reperfusion injury induces the secretion of PGE2. After the inhibition of ferroptosis by Fer-1, the expression of cyclooxygenases (COX-1 and COX-2) decreased, and PGE2 synthases cPGES, mPGES-1, and mPGES-2 were also reduced. At the same time, the PGE2 degradation enzyme 15-PGDH...
Source: Molecular Neurobiology - January 10, 2022 Category: Neurology Source Type: research
The Long Non-coding RNA SNHG12 Functions as a Competing Endogenous RNA to Modulate the Progression of Cerebral Ischemia/Reperfusion Injury
In conclusion, we demonstrated that SNHG12 acts as a ceRNA of miR-136-5p, thereby targets and regulates the expression of Bcl-2, which attenuates cerebral ischemia/reperfusion injury via activation of the PI3K/AKT pathway. This knowledge helps to better understand the pathophysiology of cerebral ischemic stroke and may provide new treatment options for this disease.
Source: Molecular Neurobiology - November 27, 2021 Category: Neurology Source Type: research
