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Condition: Stroke

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Total 302 results found since Jan 2013.

NF ‑κB/IκBα signaling pathways are essential for resistance to heat stress‑induced ROS production in pulmonary microvascular endothelial cells
Mol Med Rep. 2021 Nov;24(5):814. doi: 10.3892/mmr.2021.12454. Epub 2021 Sep 24.ABSTRACTThe results of a previous study demonstrated that heat stress (HS) triggered oxidative stress, which in turn induced the apoptosis of epithelial cells. These results uncovered a novel mechanism underlying the activation of NF‑κB in primary human umbilical vein endothelial cells. The present study aimed to further investigate the role of NF‑κB/IκBα signaling pathways in the inhibition of HS‑induced reactive oxygen species (ROS) generation and cytotoxicity in endothelial cells. The results of the present study demonstrated that H...
Source: Molecular Medicine Reports - September 24, 2021 Category: Molecular Biology Authors: Weidang Xie Wei Huang Shumin Cai Hui Chen Weijun Fu Zhongqing Chen Yanan Liu Source Type: research

Long noncoding RNA Meg3 mediates ferroptosis induced by oxygen and glucose deprivation combined with hyperglycemia in rat brain microvascular endothelial cells, through modulating the p53/GPX4 axis
In this study, rat brain microvascular endothelial cells (RBMVECs) were exposed to 6 h of oxygen and glucose deprivation (OGD), and subsequent reperfusionvia incubating cells with glucose of various high concentrations for 24 h to imitateinvitro diabetic brain ischemic injury. It was shown that the marker events of ferroptosis and increasedMeg3 expression occurred after the injury induced by OGD combined with hyperglycemia. However, all ferroptotic events were reversed with the treatment ofMeg3-siRNA. Moreover, in this in vitro model, p53 was also characterized as a downstream target ofMeg3. Furthermore, p53 knockdown prot...
Source: European Journal of Histochemistry - July 2, 2021 Category: Biomedical Science Authors: Cheng Chen, Yan Huang, Pingping Xia, Fan Zhang, Longyan Li, E Wang, Qulian Guo, Zhi Ye Source Type: research

MiR-499a prevents astrocytes mediated inflammation in ischemic stroke by targeting PTEN
CONCLUSIONS: Taken together, our findings indicate miR-499a as an important factor to prevent inflammatory response and suggest miR-499a as a new molecule for the treatment of IS. The present study also demonstrated the relationship between miR-499a and PTEN, with PTEN as a downstream signaling mediator of miR-499a in the inflammatory response of astrocytes induced by IS.PMID:34632168 | PMC:PMC8488463 | DOI:10.1016/j.ncrna.2021.09.002
Source: Cell Research - October 11, 2021 Category: Cytology Authors: Xiaoxiang Guan Yiwei Zhang Ilgiz Gareev Ozal Beylerli Xinyuan Li Guitian Lu Lin Lv Xin Hai Source Type: research

Chinese Herbal Preparation SaiLuoTong Alleviates Brain Ischemia via Nrf2 Antioxidation Pathway –Dependent Cerebral Microvascular Protection
Stroke is one of the most devastating diseases worldwide. The Chinese herbal preparation SaiLuoTong (SLT) capsule showed outstanding therapeutic effects on stroke and its sequelae. The aim of this study was to further elucidate its therapeutic mechanism. We duplicated a permanent cerebral ischemia model in rats by MCAO and used SLT (33 and 16.5 mg/kg) to intervene. The results showed SLT dose dependently decreased infarction volumes, relieved neuron degeneration and loss, and ameliorated neurological functions, and the dose of 33 mg/kg had statistical significance (compared with the model group, p < 0.05); SLT of 33 ...
Source: Frontiers in Pharmacology - November 2, 2021 Category: Drugs & Pharmacology Source Type: research

Silent information regulator 1 ameliorates oxidative stress injury via PGC-1 α/PPARγ-Nrf2 pathway after ischemic stroke in rat
CONCLUSION: Overall, our data indicated that SIRT1 directly mediated the PGC-1α/PPARγ pathway in response to focal cerebral ischemia/reperfusion-induced neurological deficit, providing insights into the treatment of focal cerebral ischemia/reperfusion injury.PMID:34774993 | DOI:10.1016/j.brainresbull.2021.11.001
Source: Brain Research Bulletin - November 14, 2021 Category: Neurology Authors: Yang Zhou Li Peng Yixin Li Yong Zhao Source Type: research

TRPV1 Suppressed NLRP3 Through Regulating Autophagy in Microglia After Ischemia-Reperfusion Injury
This study aimed to investigate whether autophagy regulates inflammatory is associated with TRPV1. Model of oxygen and glucose deprivation/reoxygenation (OGD/R) was established in vitro to induce cerebral ischemia-reperfusion injury (I/R). siRNA of Atg5, inhibitors, and agonists of both autophagy and TRPV1 were involved in our study. Autophagy was assayed by immunofluorescence staining LC-3 and autophagosome was observed using transmission electron microscopy (TEM). Autophagy/inflammation-related markers as Atg5, LC-3II/LC-3I, Beclin-1, NLRP3, IL-1 β, and Caspase-1 were also measured in the present study. Results indicate...
Source: Journal of Molecular Neuroscience - January 18, 2022 Category: Neuroscience Source Type: research

Novel mechanistic insight on the neuroprotective effect of berberine: The role of PPAR δ for antioxidant action
Free Radic Biol Med. 2022 Jan 27:S0891-5849(22)00033-8. doi: 10.1016/j.freeradbiomed.2022.01.022. Online ahead of print.ABSTRACTCerebral ischemic stroke ranks the second leading cause of death and the third leading cause of disability in lifetime all around the world, urgently necessitating effective therapeutic interventions. Reactive oxygen species (ROS) have been implicated in stroke pathogenesis and peroxisome proliferator-activated receptors (PPARs) are prominent targets for ROS management. Although recent research has shown antioxidant effect of berberine (BBR), little is known regarding its effect upon ROS-PPARs sig...
Source: Free Radical Biology and Medicine - January 30, 2022 Category: Biology Authors: Jia-Wen Shou Xiao-Xiao Li Yun-Sang Tang Bobby Lim-Ho Kong Hoi-Yan Wu Meng-Jie Xiao Chun-Kai Cheung Pang-Chui Shaw Source Type: research