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Condition: Stroke

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Total 302 results found since Jan 2013.

i-Fect Delivers siRNA in vitro and in vivo
In this study data suggest the protective effects of EPO on NUV injuries are highly associated with the increase of p-Cx43, which improves GJIC to reduce neurotoxic substances: Ziyi Zhoua, Xiaobai Weib, Jun Xiang, Junpeng Gao, Lixin Wang, Jinsong You, Yefeng Cai , Dingfang Caid. Protection of erythropoietin against ischemic neurovascular unit injuries through the effects of connexin43. Biochemical and Biophysical Research Communications. doi:10.1016/j.bbrc.2015.02...The strands were incubated at 90°C for 5 min and then at 37°C for 1 h. SiRNA was prepared immediately before administration by mixing the RNA solution (1 μg...
Source: Neuromics - February 21, 2015 Category: Neuroscience Tags: Cerebral Ischemia Connexin 43 Delivering siRNA to the CNS EPO HDAC2 i-Fect Stroke Source Type: news

Inhibition of thioredoxin-1 with siRNA exacerbates apoptosis by activating the ASK1-JNK/p38 pathway in brain of a stroke model rats.
Abstract Apoptosis is critical for the development of cerebral ischemia/reperfusion injury. Thioredoxin-1(Trx-1) protein has been reported to have anti-apoptotic effects in a variety of cell types, and it has been implicated in brain injury after middle cerebral artery occlusion (MCAO). Thus, we studied the effects of Trx1 silencing after MCAO in rats and examined whether inhibition of endogenous Trx1 could increase tissue levels of apoptosis. Male Sprague-Dawley rats (N=170) were subjected to 1h of middle cerebral arterial occlusion followed by 24h of reperfusion. Trx1 siRNAs were injected into rat brains 24h pri...
Source: Brain Research - December 22, 2014 Category: Neurology Authors: Wu X, Li L, Zhang L, Wu J, Zhou Y, Zhou Y, Zhao Y, Zhao J Tags: Brain Res Source Type: research

Genes, Vol. 4, Pages 435-456: siRNA Treatment: “A Sword-in-the-Stone” for Acute Brain Injuries
Ever since the discovery of small interfering ribonucleic acid (siRNA) a little over a decade ago, it has been highly sought after for its potential as a therapeutic agent for many diseases. In this review, we discuss the promising possibility of siRNA to be used as a drug to treat acute brain injuries such as stroke and traumatic brain injury. First, we will give a brief and basic overview of the principle of RNA interference as an effective mechanism to decrease specific protein expression. Then, we will review recent in vivo studies describing siRNA research experiments/treatment options for acute brain diseases. Lastly...
Source: Genes - September 5, 2013 Category: Genetics & Stem Cells Authors: Andrew FukudaJerome Badaut Tags: Review Source Type: research

Low-density Lipoprotein-Cholesterol Lowering Strategies for Prevention of Atherosclerotic Cardiovascular Disease: Focus on siRNA Treatment Targeting PCSK9 (Inclisiran)
AbstractPurpose of ReviewThe aim of low-density lipoprotein-cholesterol (LDL-C) lowering therapies is to safely achieve a consistent and long-term reduction in exposure of the vasculature to atherogenic lipoproteins in order to reduce the risk of atherosclerotic cardiovascular (CV) disease and the associated CV events, such as myocardial infarctions and ischemic strokes. This review summarizes the concept and clinical development of a novel molecular approach to efficiently lower LDL-C, a synthetic small interfering ribonucleic acid (siRNA) —inclisiran—directed against proprotein convertase subtilisin-kexin type 9 (PCS...
Source: Current Cardiology Reports - October 21, 2020 Category: Cardiology Source Type: research

Implementing an Innovative Lipid Management Technique Using siRNA LDL-C Lowering Therapy: Lessons Learned in an NHS Primary Care Practice With Worked Case Examples
CONCLUSIONS: Enhanced lipid management as a secondary prevention measure is achievable in line with national guidance and objectives. The methodology and education/training processes used in combination with reconstructing the management process can help practice staff realize the program benefits, which in turn can lead to a shift in behavior where all staff embed manual case-finding of high-risk patients into everyday consultations and reviews; enabling rapid identification of eligible patients. Taking a multi-disciplinary, holistic approach to new initiatives reduces service burden, particularly for GPs. Leveraging reso...
Source: Primary Care - May 16, 2023 Category: Primary Care Authors: Carl Deaney Meredith Donaldson Agne Meskauskiene Source Type: research

Osteopontin Mediates Hyperbaric Oxygen Preconditioning-Induced Neuroprotection Against Ischemic Stroke
Abstract Neurosurgical operations may result in surgical injury which would lead to postoperative neurological deficits. Hyperbaric oxygen preconditioning (HBO-PC) may be beneficial for such people. However, the exact mechanism underlying HBO-PC is not well known yet. The aim of this study is to explore the role of osteopontin (OPN) in HBO-PC-induced neuroprotection. The study consisted of two experiments. In experiment 1, Sprague Dawley (SD) rats were divided into four groups: sham group, HBO-PC sham group, stroke group, and HBO-PC group (HBO-PC + stroke). The animals in the second experiment were randomly a...
Source: Molecular Neurobiology - July 21, 2015 Category: Neurology Source Type: research

Inhibition of the immunoproteasome LMP2 ameliorates ischemia/hypoxia-induced blood-brain barrier injury through the Wnt/ β-catenin signalling pathway
CONCLUSION: This study suggests that inhibition of the immunoproteasome LMP2 ameliorates ischemia/hypoxia-induced BBB injury, and that the molecular mechanism involves the immunoproteasome-regulated activation of the Wnt/β-catenin signalling pathway under ischemic conditions.PMID:34857032 | DOI:10.1186/s40779-021-00356-x
Source: Cell Research - December 3, 2021 Category: Cytology Authors: Xing-Yong Chen Shao-Fen Wan Nan-Nan Yao Ze-Jing Lin Yan-Guang Mao Xiao-Hua Yu Yin-Zhou Wang Source Type: research

Inhibition of the immunoproteasome LMP2 ameliorates ischemia/hypoxia-induced blood –brain barrier injury through the Wnt/β-catenin signalling pathway
ConclusionThis study suggests that inhibition of the immunoproteasome LMP2 ameliorates ischemia/hypoxia-induced BBB injury, and that the molecular mechanism involves the immunoproteasome-regulated activation of the Wnt/ β-catenin signalling pathway under ischemic conditions.
Source: Military Medical Research - December 3, 2021 Category: International Medicine & Public Health Source Type: research

The Involvement of Programmed Cell Death 5 (PDCD5) in the Regulation of Apoptosis in Cerebral Ischemia/Reperfusion Injury.
CONCLUSIONS: PDCD5-induced apoptosis and over-expression of PDCD5 are harmful to the ischemic neurons in vivo. Meanwhile, the inhibition of PDCD5 may be protective via reducing the apoptotic-related protein such as p53, Bax, and caspase-3. This observation may have potential for the treatment of ischemic cerebral stroke. PMID: 23638963 [PubMed - as supplied by publisher]
Source: CNS Neuroscience and Therapeutics - May 3, 2013 Category: Neuroscience Authors: Chen CH, Jiang Z, Yan JH, Yang L, Wang K, Chen YY, Han JY, Zhang JH, Zhou CM Tags: CNS Neurosci Ther Source Type: research

Follistatin-Like 1 Attenuates Apoptosis via Disco-Interacting Protein 2 Homolog A/Akt Pathway After Middle Cerebral Artery Occlusion in Rats Basic Sciences
Conclusions— Recombinant FSTL1 decreases neuronal apoptosis and improves neurological deficits through phosphorylation of Akt by activation of its receptor DIP2A after MCAO in rats. Thus, FSTL1 may have potentials as a treatment for patients with ischemic stroke.
Source: Stroke - September 22, 2014 Category: Neurology Authors: Liang, X., Hu, Q., Li, B., McBride, D., Bian, H., Spagnoli, P., Chen, D., Tang, J., Zhang, J. H. Tags: Animal models of human disease, Apoptosis, Neuroprotectors Basic Sciences Source Type: research

GADD34 activates p53 and may have utility as a marker of atherosclerosis
Front Med (Lausanne). 2023 May 9;10:1128921. doi: 10.3389/fmed.2023.1128921. eCollection 2023.ABSTRACTWe previously identified growth arrest and DNA-damage-inducible gene 34 (GADD34) as a marker of ischemic stroke. In the present study, serum levels of anti-GADD34 antibodies were found to be significantly higher in patients with acute ischemic stroke or chronic kidney disease compared to healthy donors. We then examined the biological function of GADD34 by transfection into U2OS human osteosarcoma and U87 human glioblastoma cells. Knockdown of GADD34 by siRNA resulted in enhanced cell proliferation, which was reversed by c...
Source: Atherosclerosis - May 25, 2023 Category: Cardiology Authors: Go Tomiyoshi Rika Nakamura Natsuko Shinmen Yoichi Yoshida Seiichiro Mine Toshio Machida Katsuro Iwase Yasuo Iwadate Takaki Hiwasa Hideyuki Kuroda Source Type: research

A dietary polyphenol resveratrol acts to provide neuroprotection in recurrent stroke models by regulating AMPK and SIRT1 signaling, thereby reducing energy requirements during ischemia
In this study, elderly male Wistar rats received a combination of two mild transient middle cerebral artery occlusions (tMCAOs) as an in vivo recurrent ischemic model. Primary cultured cortical neuronal cells subjected to combined oxygen–glucose deprivation (OGD) were used as an in vitro recurrent ischemic model. RSV administration significantly reduced infarct volumes, improved behavioral deficits and protected neuronal cells from cell death in recurrent ischemic stroke models in vivo and in vitro. RSV treatments significantly increased the intracellular NAD+/NADH ratio, AMPK and SIRT1 activities, decreased energy assum...
Source: European Journal of Neuroscience - March 5, 2013 Category: Neuroscience Authors: Li‐Mei Wang, Yong‐Jiu Wang, Min Cui, Wen‐Juan Luo, Xiao‐Ji Wang, Philip A. Barber, Zhe‐Yu Chen Tags: Research Report Source Type: research

Recombinant Milk Fat Globule-EGF Factor-8 Reduces Oxidative Stress via Integrin {beta}3/Nuclear Factor Erythroid 2-Related Factor 2/Heme Oxygenase Pathway in Subarachnoid Hemorrhage Rats Basic Sciences
Conclusions— Recombinant MFGE8 attenuated oxidative stress that may be mediated by integrin β3/nuclear factor erythroid 2–related factor 2/HO pathway after SAH. Recombinant MFGE8 may serve as an alternative treatment to ameliorate early brain injury for SAH patients.
Source: Stroke - November 24, 2014 Category: Neurology Authors: Liu, F., Hu, Q., Li, B., Manaenko, A., Chen, Y., Tang, J., Guo, Z., Tang, J., Zhang, J. H. Tags: Animal models of human disease, Cerebral Aneurysm, AVM, & Subarachnoid hemorrhage Basic Sciences Source Type: research

Cofilin Inhibition Restores Neuronal Cell Death in Oxygen–Glucose Deprivation Model of Ischemia
Abstract Ischemia is a condition associated with decreased blood supply to the brain, eventually leading to death of neurons. It is associated with a diverse cascade of responses involving both degenerative and regenerative mechanisms. At the cellular level, the changes are initiated prominently in the neuronal cytoskeleton. Cofilin, a cytoskeletal actin severing protein, is known to be involved in the early stages of apoptotic cell death. Evidence supports its intervention in the progression of disease states like Alzheimer’s and ischemic kidney disease. In the present study, we have hypothesized the possible i...
Source: Molecular Neurobiology - December 20, 2014 Category: Neurology Source Type: research