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Nicotine Treatment Ameliorates Blood-Brain Barrier Damage After Acute Ischemic Stroke by Regulating Endothelial Scaffolding Protein Pdlim5
AbstractAnalysis of a National Institutes of Health (NIH) trial shows that cigarette smoking protected tissue plasminogen activator (tPA)-treated patients from hemorrhage transformation (HT); however, the underlying mechanism is not clear. Damage to the integrity of the blood-brain barrier (BBB) is the pathological basis of HT. Here, we investigated the molecular events of BBB damage after acute ischemic stroke (AIS) usingin vitro oxygen-glucose deprivation (OGD) andin vivo mice middle cerebral artery occlusion (MCAO) models. Our results showed that the permeability of bEND.3 monolayer endothelial cells was significantly i...
Source: Translational Stroke Research - May 26, 2023 Category: Neurology Source Type: research

Observational Study of Patients Hospitalized With Neurologic Events After SARS-CoV-2 Vaccination, December 2020-June 2021
Discussion All cases in this study were determined to have at least 1 risk factor and/or known etiology accounting for their neurologic syndromes. Our comprehensive clinical review of these cases supports the safety of mRNA COVID-19 vaccines.
Source: Neurology Clinical Practice - May 25, 2023 Category: Neurology Authors: Kim, C. Y., McNeill, E. N., Young, C., King, F., Clague, M., Caldwell, M., Boruah, A., Zucker, J., Thakur, K. T. Tags: Autoimmune diseases, Post-infectious, Inclusion, Diversity, Equity, Anti-racism, and Social Justice (IDEAS), COVID-19 Research Article Source Type: research

microRNA ‐221 rescues the loss of dopaminergic neurons in a mouse model of Parkinson's disease
ConclusionOur findings suggest miR-221 participates in the pathological process of PD and might be a potential drug target and provide new insight into PD treatment.
Source: Brain and Behavior - February 16, 2023 Category: Neurology Authors: Yufang Yao, Zhiyue Zhao, Fubo Zhang, Na Miao, Nan Wang, Xin Xu, Chaoping Yang Tags: ORIGINAL ARTICLE Source Type: research

Inhibition of BRD4 decreases fibrous scarring after ischemic stroke in rats by inhibiting the phosphorylation of Smad2/3
CONCLUSIONS: This study is the first to indicate that inhibition of BRD4 delays fibrous scarring after ischemic stroke through mechanisms involving the phosphorylation of Smad2/3.PMID:36244457 | DOI:10.1016/j.brainres.2022.148126
Source: Brain Research - October 16, 2022 Category: Neurology Authors: Xuemei Li Huimin Zhu Jun Wen Jiagui Huang Yue Chen Mingfen Tian Jiangxia Ren Li Zhou Qin Yang Source Type: research

PHLDA1 promotes sevoflurane-induced pyroptosis of neuronal cells in developing rats through TRAF6-mediated activation of Rac1
In conclusion, loss of PHLDA1 protected against sevoflurane-induced pyroptosis in developing rats through inhibition of TRAF6-mediated activation of Rac1.PMID:36155068 | DOI:10.1016/j.neuro.2022.09.007
Source: Neurotoxicology - September 26, 2022 Category: Neurology Authors: Lijuan Shu Chunfu Du Source Type: research

Treatment with AAV1-Rheb(S16H) provides neuroprotection in a mouse model of photothrombosis-induced ischemic stroke
We recently reported that upregulation of the constitutively active ras homolog enriched in brain [Rheb(S16H)], which induces the activation of the mammalian target of rapamycin complex 1 (mTORC1) signaling pathway, can protect adult neurons, mediated by the induction of neurotrophic factors, such as brain-derived neurotrophic factor (BDNF), in animal models of neurodegenerative diseases. Here we show that neuronal transduction of Rheb(S16H) using adeno-associated virus serotype 1 provides neuroprotection in a mouse model of photothrombosis-induced ischemic stroke. Rheb(S16H)-expressing neurons exhibited neurotrophic effec...
Source: NeuroReport - August 13, 2020 Category: Neurology Tags: Degeneration and Repair Source Type: research

Presynaptic Caytaxin prevents apoptosis via deactivating DAPK1 in the acute phase of cerebral ischemic stroke.
Abstract Death-associated protein kinase 1 (DAPK1) is a key protein that mediates neuronal death in ischemic stroke. Although the substrates of DAPK1 and molecular signal in stroke have been gradually discovered, the modulation of DAPK1 itself is still unclear. Here we first reveal that Caytaxin, a brain-specific member of BCL2/adenovirus E1B -interacting protein (BNIP-2), increases and interacts with DAPK1 as early as 2 h after middle cerebral artery occlusion (MCAO) in the penumbra area of mouse brain. Furthermore, Caytaxin binds to DAPK1 at the presynaptic site and inhibits DAPK1 catalytic activity. Silencing...
Source: Experimental Neurology - April 7, 2020 Category: Neurology Authors: Wang S, Chen K, Yu J, Wang X, Li Q, Lv F, Shen H, Pei L Tags: Exp Neurol Source Type: research

Knockdown of Arginyl-tRNA Synthetase Attenuates Ischemia-Induced Cerebral Cortex Injury in Rats After Middle Cerebral Artery Occlusion
AbstractSome researchers have previously shown that RNAi knockdown of arginyl-tRNA synthetase (ArgRS) before or after a hypoxic injury can rescue animals from death, based on the model organism,C. elegans. However, there has been no study on the application of arginyl-tRNA synthetase knockdown in treating mammalian ischemic stroke, and its potential mechanism and effect on ischemic brain damage are still unknown. Here, we focused on the Rars gene, which encodes an arginyl-tRNA synthetase, and examined the effects of Rars knockdown in a permanent middle cerebral artery occlusion model in rats. To achieve this aim, adult mal...
Source: Translational Stroke Research - March 26, 2020 Category: Neurology Source Type: research

Molecular profile of the rat peri-infarct region four days after stroke: Study with MANF.
In this study, we examine the molecular profile of the peri-infarct region on post-stroke day four, time when reparative processes are ongoing. We used a multiomics approach, involving RNA sequencing, and mass spectrometry-based proteomics and metabolomics to characterize molecular changes in the peri-infarct region. We also took advantage of our previously developed method to express transgenes in the peri-infarct region where self-complementary adeno-associated virus (AAV) vectors were injected into the brain parenchyma on post-stroke day 2. We have previously used this method to show that mesencephalic astrocyte-derived...
Source: Experimental Neurology - March 26, 2020 Category: Neurology Authors: Teppo J, Vaikkinen A, Stratoulias V, Mätlik K, Anttila JE, Smolander OP, Pöhö P, Harvey BK, Kostiainen R, Airavaara M Tags: Exp Neurol Source Type: research

MST4 modulates the neuro-inflammatory response by regulating I κBα signaling pathway and affects the early outcome of experimental ischemic stroke in mice.
MST4 modulates the neuro-inflammatory response by regulating IκBα signaling pathway and affects the early outcome of experimental ischemic stroke in mice. Brain Res Bull. 2019 Nov 10;: Authors: Luan D, Zhang Y, Yuan L, Chu Z, Ma L, Xu Y, Zhao S Abstract MST4 limits peripheral, macrophage-dependent inflammatory responses through direct phosphorylation of the adaptor TRAF6; though its role in neuro-inflammation is unclear. We investigated microglia expression of MST4 and whether is attenuates neuro-inflammatory response after cerebral ischemia-reperfusion injury in mice. Adult male C57BL6 mice were su...
Source: Brain Research Bulletin - November 9, 2019 Category: Neurology Authors: Luan D, Zhang Y, Yuan L, Chu Z, Ma L, Xu Y, Zhao S Tags: Brain Res Bull Source Type: research

OCT4B-190 protects against ischemic stroke by modulating GSK-3 β/HDAC6.
OCT4B-190 protects against ischemic stroke by modulating GSK-3β/HDAC6. Exp Neurol. 2019 Apr 11;: Authors: Chen Y, Wu Z, Zhu X, Zhang M, Zang X, Li X, Xu Y Abstract OCT4 is a key regulator in maintaining the pluripotency and self-renewal of embryonic stem cells (ESCs). Human OCT4 gene has three mRNA isoforms, termed OCT4A, OCT4B and OCT4B1. The 190-amino-acid protein isoform (OCT4B-190) is one of the major products of OCT4B mRNA, the biological function of which is still not well defined. Recent evidence suggests that OCT4B-190 may function in the cellular stress response. The glycogen synthase kinase...
Source: Experimental Neurology - April 10, 2019 Category: Neurology Authors: Chen Y, Wu Z, Zhu X, Zhang M, Zang X, Li X, Xu Y Tags: Exp Neurol Source Type: research

MST1 Suppression Reduces Early Brain Injury by Inhibiting the NF- κB/MMP-9 Pathway after Subarachnoid Hemorrhage in Mice.
Conclusions: The current findings indicate that MST1 participates in SAH-induced BBB disruption and white matter fiber damage via the downstream NF-κB-MMP-9 signaling pathway. Therefore, MST1 antagonists may serve as a novel therapeutic target to prevent early brain injury in SAH patients. PMID: 30018671 [PubMed - in process]
Source: Behavioural Neurology - July 20, 2018 Category: Neurology Authors: Qu J, Zhao H, Li Q, Pan P, Ma K, Liu X, Feng H, Chen Y Tags: Behav Neurol Source Type: research

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