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Effect of acute ischemia stroke on circular RNAs

ABSTRACT: Effect of acute ischemia stroke on circular RNAs

PROVIDER: PRJNA552486 | ENA |

REPOSITORIES: ENA

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Effect of acute ischemia stroke on circular RNAs

Project description:To explore circulating circRNAs associated with acute ischemia stroke(AIS), their utility as an early diagnostic marker and their significance in predicting stroke outcomes.

2020-11-04 | GSE133768 | GEO

Effect of transient focal ischemia on circular RNAs

Project description:Effect of transient focal ischemia on circular RNAs

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Identification of Blood Circular RNAs as the Potential Biomarkers for Acute Ischemic Stroke

Project description:Many hospitals lack facilities for accurate diagnosis of acute ischemic stroke (AIS). Circular RNA (circRNA) is highly expressed in the brain and is closely associated with stroke. In this study, we examined whether the blood-borne circRNAs can be promising candidates as adjunctive diagnostic biomarkers and their pathophysiological roles after stroke. We profiled the blood circRNA expression in mice subjected to experimental focal cerebral ischemia, and validated the selected circRNAs in AIS patients. We demonstrated that 128, 198 and 789 circRNAs were significantly altered at 5 min, 3 h and 24 h after ischemic stroke, respectively.

2020-01-23 | GSE138849 | GEO

Transcriptome analyses of cerebral ischemia reveal functional lncRNAs in ischemia stroke

Project description:Background and Purpose: Long noncoding RNAs (lncRNAs) are an emerging class of genomic regulatory molecules reported in neurodevelopment and many diseases. Despite extensive studies have identified lncRNAs and discovered their functions in CNS diseases, the function of lncRNAs in ischemia stroke remains poorly understood. Method: Ischemia was induced by transient middle cerebral artery occlusion. Expression profiles of lncRNAs, miRNAs and mRNAs after ischemia stroke were obtained using high throughput sequencing technology. A correlation network was constructed to predict lncRNA functions. LncRNA-miRNA-mRNA network was constructed to discover ceRNAs. Results: 1924 novel lncRNAs were identified, indicating that the ischemia stroke has a complex effect on lncRNAs. The top 10 regulated lncRNAs was validated by qRT-PCR. We have also predicted function of lncRNAs, and subjected them to gene co-expression network analysis, revealing the involvement of lncRNAs in many important biological process including injury and repair that are implicated in the regulation of ischemia stroke. Furthermore, lncRNAs mediated SMD (Staufen1-mediated mRNA decay) was analyzed and ceRNA (competitive endogenous RNAs) network was constructed in ischemia stroke. Conclusions: This study reports the genome-wide lncRNA profiles in ischemia stroke using high throughput sequencing and constructs a systematic lncRNA-miRNA-mRNA network which reveals a complex functional noncoding RNA regulatory network in ischemia stroke.

2017-02-23 | GSE78200 | GEO

The effect of RVG-SCMH1-Evs treatment on photothrombotic (PT) stroke mice

Project description:Metabolic dysfunction is considered a key event after ischemic stroke. However, the underlying mechanisms of metabolic disorders in cerebral ischemia is unknown. Circular RNA SCMH1 (circSCMH1), a circular RNA that has been reported to function in brain repair after stroke, was confirmed to be involved in metabolic disorders. circSCMH1 was delivered by rabies virus glycoprotein (RVG)-modified sxtracellular vesicle. Mechanistically, circSCMH1 decreased kynurenine 3-monooxygenase (KMO) expression, a key enzyme in kynurenine metabolism. Our findings suggested that circSCMH1 inhibited KMO expression, providing insight into the mechanism by which circSCMH1 promotes stroke recovery.

2024-05-26 | GSE261613 | GEO

Identification of Blood Circular RNAs as the Potential Biomarkers for Acute Ischemic Stroke

Project description:Identification of Blood Circular RNAs as the Potential Biomarkers for Acute Ischemic Stroke

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Transcriptomic and proteomic multi-model global gene expression analysis reveals regulatory signatures during ischemia stroke (photothrombotic internal ischemia stroke)

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Transcriptomic and proteomic multi-model global gene expression analysis reveals regulatory signatures during ischemia stroke (photothrombotic cerebral ischemia stroke)

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microRNAs involved in regulating embolic stroke recovery following spontaneous reperfusion [miRNA]

Project description:To date, miRNA expression studies on cerebral ischemia in both human and animal models have focused mainly on acute phase of ischemic stroke. In this study, we present the roles played by microRNAs in the spontaneous recovery phases in cerebral ischemia using rodent stroke models. In this study presented here, Middle Cerebral Artery Occlusion stroke model was established by using embolus and the brain samples of stroke model were harvested at 0hrs, 3hrs, 6hrs, 12hrs, 24hrs, 48hrs, 72hrs, 120hrs and 168hrs. RNAs were extracted from these samples and microRNA array and mRNA array were performed.

2013-12-09 | E-GEOD-46266 | biostudies-arrayexpress

Effect of transient focal ischemia on circular RNAs

Project description:To investigate the potential involvement of circRNA in ischemic pathophysiology, we performed a circRNA microarray in an established transient middle cerebral artery occlusion (MCAO) mouse model of stroke. We evaluated the expression of 1797 circRNAs in adult mice brain after tMCAO. In our study, 5 of the 1178 circRNAs analyzed in the circRNA array were up-regulated significantly, ≥1.5-fold, in ischemic cortex at 12 hours of reperfusion after MCAO compared with their levels in sham group.

2020-09-25 | GSE115697 | GEO

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