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Thioredoxin 1 regulates the pentose phosphate pathway via ATM phosphorylation after experimental subarachnoid hemorrhage in rats
Brain Res Bull. 2022 May 16;185:162-173. doi: 10.1016/j.brainresbull.2022.05.008. Online ahead of print.ABSTRACTSubarachnoid hemorrhage (SAH), a type of hemorrhagic stroke, is a neurological emergency with high morbidity and mortality. Early brain injury (EBI) after SAH is the leading cause of poor prognosis in SAH patients. TRX system is a NADPH-dependent antioxidant system which is composed of thioredoxin reductase (TRXR), thioredoxin (TRX). The pentose phosphate pathway (PPP), a pathway through which glucose can be metabolized, is a major source of NADPH. Thioredoxin 1 (TRX1) is a member of thioredoxin system mainly loc...
Source: Brain Research Bulletin - May 19, 2022 Category: Neurology Authors: Xiaodong Wang Zongqi Wang Jie Wu Lingling Wang Xiang Li Haitao Shen Haiying Li Jianguo Xu Wen Li Gang Chen Source Type: research

Beta-Boswellic Acid Protects Against Cerebral Ischemia/Reperfusion Injury via the Protein Kinase C Epsilon/Nuclear Factor Erythroid 2-like 2/Heme Oxygenase-1 Pathway
This study demonstrates that β-BA exerts neuroprotective effects against cerebral I/R via the activation of the PRKCE/NFE2L2/HMOX1 pathway and is a potentia l therapeutic candidate for ischemic stroke.Graphical abstract
Source: Molecular Neurobiology - May 3, 2022 Category: Neurology Source Type: research

Mitigated Oxidative Stress and Cognitive Impairments in Transient Global Ischemia using Niosomal Selegiline-NBP delivery
Behav Neurol. 2022 Apr 16;2022:4825472. doi: 10.1155/2022/4825472. eCollection 2022.ABSTRACTStroke is the most common reason for adult disabilities and the second ground for death worldwide. Our previous study revealed that selegiline serves as an alternative candidate in transient hypoxia-ischemia. However, aggressive and restless behavior was observed in stroke-induced rats receiving 4 mg/kg selegiline. In comparison, 1 mg/kg selegiline could induce negligible therapeutic effects on mitochondrial dysfunction and histopathological changes. Therefore, we designed oral noisome-based selegiline attached to 4-(4-nitrobenzyl) ...
Source: Behavioural Neurology - April 26, 2022 Category: Neurology Authors: Bahareh Jafari Mahmoud Gharbavi Yasamin Baghdadchi Hamidreza Kheiri Manjili Javad Mahmoudi Iraj Jafari-Anarkoli Shayan Amiri Mir-Jamal Hosseini Source Type: research

Is Selenium Supplementation Beneficial in Acute Ischemic Stroke?
This study proposed to investigate the effect of intravenous Se (Selenase) administration in patients with acute ischemic stroke (AIS) on neurological outcomes, antioxidant enzyme activity, and inflammatory marker levels. Methods: AIS patients (n=50) were recruited from a neurology unit of a university-affiliated hospital. Patients were randomly assigned to receive either Selenase or placebo (saline) for 5 days. The modified ranking scale, the national institute of health stroke scale, and the mini-mental state examination, as primary outcomes, and the serum GPx concentration, total antioxidant activity, and tumor n...
Source: The Neurologist - March 1, 2022 Category: Neurology Tags: Original Articles Source Type: research

The Mfn1- βIIPKC Interaction Regulates Mitochondrial Dysfunction via Sirt3 Following Experimental Subarachnoid Hemorrhage
AbstractNeuronal injury following subarachnoid hemorrhage (SAH) has been shown to be associated with mitochondrial dysfunction and oxidative stress. βIIPKC, a subtype of protein kinase C (PKC), accumulates on the mitochondrial outer membrane and phosphorylates mitofusin 1 (Mfn1) at serine 86. Here, we investigated the role of Mfn1-βIIPKC interaction in brain damage and neurological function in both in vivo and in vitro experimental SAH models. The expression of βIIPKC protein and the interaction of Mfn1-βIIPKC were found to be increased after OxyHb treatment in primary cultured cortical neurons and were also observed i...
Source: Translational Stroke Research - February 22, 2022 Category: Neurology Source Type: research

Post-treatment with apocynin at a lower dose regulates the UPR branch of eIF2 α and XBP-1 pathways after stroke
Brain Res Bull. 2022 Feb 7:S0361-9230(22)00036-3. doi: 10.1016/j.brainresbull.2022.02.003. Online ahead of print.ABSTRACTStroke leads to disturbance in the physiology of the ER (Endoplasmic Reticulum) that triggers UPR (Unfolded Protein Response) pathways aimed to compensate neuronal cell damage. However, sustained UPR causes stressful conditions in the ER lumen forming abnormal protein aggregates. Stroke-induced oxidative stress also amalgamates with UPR to safeguard and ensure the proper functioning of brain cells. Thus we tested the effect of apocynin (a potent antioxidant) post-treatment in experimental stroke on the o...
Source: Brain Research Bulletin - February 10, 2022 Category: Neurology Authors: Venkata Prasuja Nakka Raghu Gogada Praveen Kumar Simhadri Mohammed Abdul Qadeer Prakash Babu Phanithi Source Type: research

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