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Total 498 results found since Jan 2013.

Ropinirole induces neuroprotection following reperfusion-promoted mitochondrial dysfunction after focal cerebral ischemia in Wistar rats.
In conclusion, these results demonstrate that Ropinirole treatment is beneficial in preserving the mitochondrial functions that are altered in cerebral ischemic injury and thus can help in defining better therapies. PMID: 31816341 [PubMed - as supplied by publisher]
Source: Neurotoxicology - December 5, 2019 Category: Neurology Authors: Andrabi SS, Tabassum H, Parveen S, Parvez S Tags: Neurotoxicology Source Type: research

Drug development in targeting ion channels for brain edema.
Abstract Cerebral edema is a pathological hallmark of various central nervous system (CNS) insults, including traumatic brain injury (TBI) and excitotoxic injury such as stroke. Due to the rigidity of the skull, edema-induced increase of intracranial fluid significantly complicates severe CNS injuries by raising intracranial pressure and compromising perfusion. Mortality due to cerebral edema is high. With mortality rates up to 80% in severe cases of stroke, it is the leading cause of death within the first week. Similarly, cerebral edema is devastating for patients of TBI, accounting for up to 50% mortality. Curr...
Source: Acta Pharmacologica Sinica - August 26, 2020 Category: Drugs & Pharmacology Authors: Luo ZW, Ovcjak A, Wong R, Yang BX, Feng ZP, Sun HS Tags: Acta Pharmacol Sin Source Type: research

Electroacupuncture promotes axonal regrowth by attenuating the myelin-associated inhibitors-induced RhoA/ROCK pathway in cerebral ischemia/reperfusion rats.
This study explored whether EA can improve the inhibitory microenvironment, attenuate RhoA/ROCK-mediated neurite regrowth inhibitory pathways, andpromote the expression of neuroplasticity proteins, thus exerting a protective role in cerebral ischemia/reperfusion (I/R) injury. Rats were subjected to middle cerebral artery occlusion (MCAO) for 2 h followed by 7 days of reperfusion, and they received EA or fasudil once daily for 7 days. The Garcia JH score, 2,3,5-triphenyltetrazolium chloride (TTC) staining, and transmission electron microscopy (TEM) were used to assess neural injury. The protein and mRNA levels of myelin-ass...
Source: Brain Research - August 23, 2020 Category: Neurology Authors: Chen S, Wang H, Xu H, Zhang Y, Sun H Tags: Brain Res Source Type: research

Inhibition of LncRNA MALAT1 Attenuates Cerebral Ischemic Reperfusion Injury via Regulating AQP4 Expression
Stroke is one of the leading causes of mortality and disability worldwide. Long noncoding RNAs (lncRNAs) including MALAT1 have been shown to have critical roles in cerebral ischemia reperfusion injury (CIRI). However, the underlying mechanism of MALAT1 in CIRI has not been elucidated. The present study aimed to investigate the function and potential regulatory mechanism of MALAT1 in cerebral ischemic reperfusion injury. We established the middle cerebral artery occlusion (MCAO) model and oxygen-glucose deprivation/reoxygenation (OGD/RX) model in vivo and in vitro, and then Cell Counting Kit-8 (CCK-8), RT-qPCR, flow cytomet...
Source: European Neurology - October 30, 2020 Category: Neurology Source Type: research

Effect of Electroacupuncture on Neurological Deficit and Activity of Clock and Bmal1 in Cerebral Ischemic Rats
This study aims to explore the effect of acupuncture at acupoints GV20 and BL23 on neuroprotection and anti-apoptosis in middle cerebral artery occlusion (MCAO) rats and expression of apoptosis and circadian rhythm related proteins. Male Sprague-Dawley (SD) rats were randomly divided into five groups: normal group (Normal), sham model group (Sham MCAO), MCAO model group (MCAO), sham electroacupuncture group (Sham EA) and electroacupuncture group (EA). The MCAO model was prepared by electrocoagulation. The first acupuncture treatment was performed within 2 h after surgery, and then acupuncture therapy was performed on 1st d...
Source: Journal of Huazhong University of Science and Technology -- Medical Sciences -- - December 1, 2020 Category: Research Source Type: research

Loop Diuretics Inhibit Ischemia-Induced Intracellular Ca2+ Overload in Neurons via the Inhibition of Voltage-Gated Ca2+ and Na+ Channels
One consequence of ischemic stroke is disruption of intracellular ionic homeostasis. Intracellular overload of both Na+ and Ca2+ has been linked to neuronal death in this pathophysiological state. The etiology of ionic imbalances resulting from stroke-induced ischemia and acidosis includes the dysregulation of multiple plasma membrane transport proteins, such as increased activity of sodium-potassium-chloride cotransporter-1 (NKCC-1). Experiments using NKCC1 antagonists, bumetanide (BMN) and ethacrynic acid (EA), were carried out to determine if inhibition of this cotransporter affects Na+ and Ca2+ overload observed follow...
Source: Frontiers in Pharmacology - September 15, 2021 Category: Drugs & Pharmacology Source Type: research

Folium < em > Ginkgo < /em > extract and tetramethylpyrazine sodium chloride injection (Xingxiong injection) protects against focal cerebral ischaemia/reperfusion injury via activating the Akt/Nrf2 pathway and inhibiting NLRP3 inflammasome activation
CONCLUSIONS: Xingxiong injection prevents cerebral ischaemia/reperfusion injury via activating the Akt/Nrf2 pathway and inhibiting NLRP3 inflammasome. These findings provide experimental evidence for clinical use of drugs in the treatment of ischaemic stroke.PMID:35060427 | DOI:10.1080/13880209.2021.2014895
Source: Pharmaceutical Biology - January 21, 2022 Category: Drugs & Pharmacology Authors: Ting Zhu Bin-Yu Fang Xiang-Bao Meng Shu-Xia Zhang Hong Wang Ge Gao Fei Liu Yu Wu Jin Hu Gui-Bo Sun Xiao-Bo Sun Source Type: research

AKT/GSK-3 β signaling is altered through downregulation of mTOR during cerebral Ischemia/Reperfusion injury
CONCLUSION: Our findings provide new insight into the cellular responses to ischemia/reperfusion brain injury and will help develop new treatments targeting the AKT signaling pathway for the treatment of ischemic stroke.PMID:35235160 | DOI:10.1007/s11033-022-07247-x
Source: Molecular Biology Reports - March 2, 2022 Category: Molecular Biology Authors: Shengwei Peng Jin-Hua Gu Chun-Ling Dai Khalid Iqbal Fei Liu Cheng-Xin Gong Source Type: research

Mechanism of ischemic brain injury repair by endothelial progenitor cell ‑derived exosomes
Mol Med Rep. 2022 Aug;26(2):269. doi: 10.3892/mmr.2022.12785. Epub 2022 Jul 1.ABSTRACTIschemic stroke is a refractory disease that seriously endangers human health and life. The main treatment aim of stroke is to alleviate brain injury. The present study aimed to investigate the effects and mechanisms of endothelial progenitor cell (EPC)‑derived exosomes in repairing ischemic brain injury. Sprague‑Dawley rat models of cerebral ischemia‑reperfusion (IR) injury were established by middle cerebral artery occlusion. The IR model rats were then treated with PBS, EPC or exosomes; untreated and Sham rats were used as contro...
Source: Molecular Medicine - July 1, 2022 Category: Molecular Biology Authors: Rui Huang Tianxiang Cheng Xianliang Lai Source Type: research