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Total 498 results found since Jan 2013.

Changes in electrolyte concentrations alter the impedance during ischemia-reperfusion injury in rat brain
In this study, changes in the bio-impedance spectroscopy using a two-electrode method with varying frequencies from 100 to 35  kHz have been assessed in a model of global cerebral ischemia in anesthetized rats during normal, occlusion and reperfusion conditions. Global cerebral ischemia was induced by bilateral common carotid artery occlusion for 40  min following 40 min of reperfusion. The concentration of sodium, potassium, calcium and chloride ions in the whole rat brain was determined by electrolyte analyzer. For the interpretation of in vivo results, changes in electrical impedance with varying concentrati...
Source: Physiological Measurement - October 29, 2019 Category: Physiology Authors: Gaurav Kumar, Uvanesh Kasiviswanathan, Sumedha Mukherjee, Sanjeev Kumar Mahto, Neeraj Sharma and Ranjana Patnaik Source Type: research

LncRNAGAS5 sponges miRNA-221 to promote neurons apoptosis by up-regulated PUMA under hypoxia condition.
Conclusions: the present study revealed that GAS5 aggravated cell apoptosis in hypoxia condition via miR-221/PUMA axis, which may provide potential targets for the treatment of stroke. PMID: 31878844 [PubMed - as supplied by publisher]
Source: Neurological Research - December 28, 2019 Category: Neurology Tags: Neurol Res Source Type: research

Treadmill exercise improves neurological function by inhibiting autophagy and the binding of HMGB1 to Beclin1 in MCAO juvenile rats
Publication date: Available online 8 January 2020Source: Life SciencesAuthor(s): Guoyuan Pan, Lingqin Jin, Weimin Shen, Jieqiong Zhang, Juanjuan Pan, Jingyan Cheng, Qingfeng Xie, Quan Hu, Shamin Wu, Hongmei Zhang, Xiang ChenAbstractAimsTreadmill exercise is a beneficial treatment following childhood stroke. Thus, studies focusing on the neuroprotective mechanism of exercise training during postischemic treatment in children with ischemic stroke are urgently needed. We evaluated the effects of treadmill exercise on autophagy after cerebral ischemia in young rats.Main methodsRats (23–25 days old) underwent cerebral ische...
Source: Life Sciences - January 9, 2020 Category: Biology Source Type: research

Endothelin-1 (ET-1) Promotes a Proinflammatory Microglia Phenotype in Diabetic Conditions.
Abstract Diabetes increases the risk and severity of cognitive impairment, especially after ischemic stroke. It is also known that the activation of ET system is associated with cognitive impairment and microglia around periinfarct area produce ET-1. However, little is known about the effect of ET-1 on microglial polarization, especially under diabetic conditions. We hypothesized that a) ET-1 activates microglia to proinflammatory M-1 like phenotype, and b) Hypoxia/LPS activates the microglial ET system and promotes microglial activation towards M-1 phenotype in diabetic conditions. Microglial cells (C8B4) culture...
Source: Canadian Journal of Physiology and Pharmacology - March 1, 2020 Category: Drugs & Pharmacology Authors: Abdul Y, Jamil S, He L, Li W, Ergul A Tags: Can J Physiol Pharmacol Source Type: research

Total Glycosides of Cistanche deserticola Promote Neurological Function Recovery by Inducing Neurovascular Regeneration via Nrf-2/Keap-1 Pathway in MCAO/R Rats
ConclusionTGs are the main active components of C. deserticola against MCAO/R-induced cerebral injury, and protection is mainly via the Nrf-2/Keap-1 pathway.
Source: Frontiers in Pharmacology - March 16, 2020 Category: Drugs & Pharmacology Source Type: research

Intrathecal injection of aptamer-conjugated DNA framework for the treatment of cerebral ischemia/reperfusion injury.
Conclusion: The high payload of an aptamer conjugated bipyramidal FNA was for cerebral IRI management was provided by intrathecal injection. This DNA framework alleviated the extent of cerebral IRI by acting as an antioxidant and inhibitor of inflammation.
Source: Journal of Nuclear Medicine - May 14, 2020 Category: Nuclear Medicine Authors: Rosenkrans, Z., Li, S., Jiang, D., Engle, J., Cai, W. Tags: Center for Molecular Imaging Innovation & amp; Translation (CMIIT) YIA Symposium Source Type: research

The Effect of Thymoquinone on the Characteristics of the Brain Extracellular Space in Transient Middle Cerebral Artery Occlusion Rats.
In this study, we used a gadolinium-diethylenetriaminepentacetate (Gd-DTPA)-enhanced magnetic resonance imaging (MRI) system to determine the effects of thymoquinone on ECS parameters in transient middle cerebral artery occlusion rats (tMCAO) to prove the neuroprotective effect of thymoquinone on brain tissue damage caused by ischemic stroke. Neurological examinations, 2,3,5-triphenyltetrazolium chloride (TTC) staining, hematoxylin-eosin (H&E) staining and assaying of ECS parameters using MRI were performed 24 h after surgery. We found that thymoquinone could improve the behavioural performance by neurological examin...
Source: Biological and Pharmaceutical Bulletin - September 5, 2020 Category: Drugs & Pharmacology Authors: Fan C, Tian F, Zhao X, Sun Y, Yang X, Han H, Pu X Tags: Biol Pharm Bull Source Type: research

Neuroprotective Effect of Astragaloside IV on Cerebral Ischemia/Reperfusion Injury Rats Through Sirt1/Mapt Pathway
Conclusion: AS-IV can improve the neurological deficit after CIR injury in rats and reduce the cerebral infarction area, which exerts neuroprotective effects probably through the Sirt1/Mapt pathway.
Source: Frontiers in Pharmacology - March 26, 2021 Category: Drugs & Pharmacology Source Type: research

Salt Substitute Cut Disease and Death Rates in Large Trial
A randomized trial recently reported in the New England Journal of Medicine focused on an important question for older adults with high blood pressure or a previous stroke: Can switching from regular salt to a 75% sodium chloride and 25% potassium chloride substitute help protect against stroke, major cardiovascular events, or death?
Source: JAMA - October 26, 2021 Category: General Medicine Source Type: research

Neuroprotective Effect of Moxibustion on Cerebral Ischemia/Reperfusion Injury in Rats by Downregulating NR2B Expression
CONCLUSIONS: Moxibustion can improve neurological dysfunction and decrease infarction area and neuronal apoptosis caused by cerebral ischemia/reperfusion in rats. Its neuroprotective mechanism may be related to downregulating the expression of NR2B.PMID:34733340 | PMC:PMC8560262 | DOI:10.1155/2021/5370214
Source: Evidence-based Complementary and Alternative Medicine - November 4, 2021 Category: Complementary Medicine Authors: Zhong Di Qin Guo Quanai Zhang Source Type: research

Isoflurane and Netrin-1 combination therapy enhances angiogenesis and neurological recovery by improving the expression of HIF-1 α-Netrin-1-UNC5B/VEGF cascade to attenuate cerebral ischemia injury
In conclusion, our results suggested that ISO combined with NT-1 could promote angiogenesis, recover long-term neurobehavioral function, and attenuate cerebral ischemia injury by activating the HIF-1α-Netrin-1-UNC5B/VEGF cascade.PMID:35247371 | DOI:10.1016/j.expneurol.2022.114028
Source: Experimental Neurology - March 5, 2022 Category: Neurology Authors: Nian Li Xu Zhang Jingwen Zhai Jiangwen Yin Ketao Ma Ruixue Wang Xinlei Qin Yan Li Xiwei Dong Sheng Wang 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