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Total 30 results found since Jan 2013.

Identification of Novel Circular RNA Targets in Key Penumbra Region of Rats After Cerebral Ischemia-Reperfusion Injury
AbstractCircular RNAs (circRNAs) are abundantly and stably expressed in the brain of mammals and humans. Some circRNAs are implicated in ischemic stroke. Therefore, we aimed to detect how circRNAs change in the key penumbra area during cerebral ischemia-reperfusion (CI/R) injury. Rats were subjected to transient middle cerebral artery occlusion (tMCAO), during which the permanent blocking period was 2 h and reperfusion time was 24 or 72 h. Then modified neurologic severity score (mNSS), triphenyl tetrazolium chloride (TTC) staining and HE staining were used to exhibiting damage between rats in different groups. The penumbr...
Source: Journal of Molecular Neuroscience - September 9, 2023 Category: Neuroscience Source Type: research

Ketamine improves neuronal recovery following spreading depolarization in peri ‐infarct tissues
We examined spreading depolarization (SD) waves in a mouse stroke model. SDs were initiated by focal potassium chloride application and propagated through a region of graded perfusion deficit created by distal middle cerebral artery (dMCA) occlusion. Longer lasting depolarizations (DC shifts measured from local field potential (LFP) electrodes) and neuronal Ca2+ transients (epifluorescence GCaMP imaging) occurred at locations with larger perfusion deficits (proximal to occlusion), as compared with remote recording sites (laser speckle contrast imaging (LSCI) of cerebral perfusion). Ketamine, at concentrations that did not ...
Source: Journal of Neurochemistry - August 19, 2023 Category: Neuroscience Authors: Katelyn M. Reinhart, Russell A. Morton, K. C. Brennan, Andrew P. Carlson, C. William Shuttleworth Tags: ORIGINAL ARTICLE Source Type: research

Astragaloside IV alleviates neuronal ferroptosis in ischemic stroke by regulating fat mass and obesity ‐associated—N6‐methyladenosine—acyl‐CoA synthetase long‐chain family member 4 axis
Ischemic stroke (IS) is a detrimental neurological disease with limited treatments options. Astragaloside IV (As-IV) was a promising bioactive constituent in the treatment of IS. In our study, As-IV promoted the transcription of fat mass and obesity-associated (Fto) by upregulating activating transcription factor 3(Atf3), resulting in a decrease of long-chain acyl-CoA synthetase-4 (Acsl4) N6-methyladenosine (m6A) levels, thus improving neuronal injury in IS by inhibiting ferroptosis. These findings provided a better understanding of the molecular mechanisms underlying the neuroprotective effects of As-IV and led to novel t...
Source: Journal of Neurochemistry - June 10, 2023 Category: Neuroscience Authors: Zhenglong Jin, Wenying Gao, Fu Guo, Shaojun Liao, Mingzhe Hu, Tao Yu, Shangzhen Yu, Qing Shi Tags: ORIGINAL ARTICLE Source Type: research

Salidroside attenuates cerebral ischemia/reperfusion injury by regulating TSC2-induced autophagy
In conclusion, SAL reduces the inflammatory response and oxidative stress in a concentration-dependent manner, and protects against cerebral I/R injury by modulating TSC2-induced autophagy. These findings suggest SAL may prove to be a potential therapeutic agent for ischemic stroke.PMID:36374318 | DOI:10.1007/s00221-022-06493-6
Source: Experimental Brain Research - November 14, 2022 Category: Neuroscience Authors: Chunli Li Jiejun Chi Hongyan Dai Ming Liang Yangyang Wang Songxin Tian Huiyan Zhu Hai Xu Source Type: research

Transcription Factor HEY1 Improves Brain Vascular Endothelial Cell Function and Alleviates Ischemic Stroke by Upregulating NOTCH3
Neurochem Res. 2022 Mar 22. doi: 10.1007/s11064-022-03544-w. Online ahead of print.ABSTRACTTo investigate the function of hairy/enhancer-of-split related with YRPW motif protein 1 (HEY1) and Notch receptor 3 (NOTCH3) in ischemic stroke. Stroke models were established by middle cerebral artery occlusion (MCAO) and oxygen glucose deprivation (OGD) in rats and rat brain microvascular endothelial cells (BMVECs), respectively. Neurological deficit evaluation and 2,3,5-triphenyltetrazolium chloride staining were used to assess cerebral injury. The expression of HEY1 and NOTCH3 was manipulated using gain and loss of function appr...
Source: Neurochemical Research - March 22, 2022 Category: Neuroscience Authors: Tingting Zhu Hongxi Chen Cuihong He Xiaojuan Liu Source Type: research

Serum Exosomal mir-340-5p Promotes Angiogenesis in Brain Microvascular Endothelial Cells During Oxygen-Glucose Deprivation
Neurochem Res. 2022 Jan 7. doi: 10.1007/s11064-021-03492-x. Online ahead of print.ABSTRACTIschemic stroke (IS) is a cerebrovascular disease with high morbidity, recurrence, and mortality. The purpose of the present study was to investigate the role and mechanism of human serum exosomes on angiogenesis after IS. The middle cerebral artery occlusion (MCAO) in vivo model and oxygen-glucose deprivation (OGD) in vitro model were established. Human serum exosomes from healthy samples (NC-exo) and IS samples (IS-exo) were injected into MCAO mice. Neurobehavioral tests were performed to assess the extent of neurological deficits. ...
Source: Neurochemical Research - January 7, 2022 Category: Neuroscience Authors: Chuan Xu Hailong Yu Beilei Chen Yuan Ma Penghua Lv Source Type: research

Integrated 16S rRNA Gene Sequencing and LC-MS Analysis Revealed the Interplay Between Gut Microbiota and Plasma Metabolites in Rats With Ischemic Stroke
This study aimed to reveal the specific asso-ciation between the microbiota and the metabolites in IS using integrated 16S rRNA gene sequencing and liquid chromatography-mass spectrometry (LC-MS) analysis. Male Sprague Dawley (SD) rats were divided into three groups: normal group (n = 8, Normal), model group (n = 9, IS), and sham-operated group (n = 8, Sham). Rats in the IS group were induced by middle cerebral artery occlusion (MCAO), and rats in the Sham group received an initial anesthesia and neck incision only. A neurological function test and 2,3,5-triphenyltetrazolium chloride (TTC) staining were used to...
Source: Journal of Molecular Neuroscience - October 1, 2021 Category: Neuroscience Source Type: research

Gastrodin Alleviates Cerebral Ischaemia/Reperfusion Injury by Inhibiting Pyroptosis by Regulating the lncRNA NEAT1/miR-22-3p Axis
Neurochem Res. 2021 Apr 11. doi: 10.1007/s11064-021-03285-2. Online ahead of print.ABSTRACTCerebral ischaemia/reperfusion (I/R) injury-induced irreversible brain injury is a major cause of mortality and functional impairment in ageing people. Gastrodin (GAS), derived from the traditional Chinese herbal medicine Tianma, has been reported to inhibit the progression of stroke, but the mechanism whereby GAS modulates the progression of cerebral I/R remains unclear. The middle cerebral artery occlusion method was used as a model of I/R in vivo. Rats were pretreated with GAS by intraperitoneal injection 7 days before I/R surgery...
Source: Neurochemical Research - April 11, 2021 Category: Neuroscience Authors: Heng-Sheng Zhang Bo Ouyang Xiong-Ying Ji Mei-Fang Liu Source Type: research

S-oxiracetam Facilitates Cognitive Restoration after Ischemic Stroke by Activating α7nAChR and the PI3K-Mediated Pathway.
In conclusion, α7nAChR and PI3K are key molecules that mediated the signaling pathway leading to S-ORC-induced cognitive restoration after MCAO/R. PMID: 33481205 [PubMed - as supplied by publisher]
Source: Neurochemical Research - January 22, 2021 Category: Neuroscience Authors: Fan W, Zhang Y, Li X, Xu C Tags: Neurochem Res Source Type: research