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Total 16 results found since Jan 2013.

A Novel Rat Model of Embolic Cerebral Ischemia Using a Cell-Implantable Radiopaque Hydrogel Microfiber
We present a novel rat model of focal infarct restricted to the middle cerebral artery territory using a radiopaque hydrogel microfiber positioned under fluoroscopic guidance. By comparing the use of stem cell-containing versus non-containing fibers in this stroke model, it would be possible to determine the efficacy of "pure" cell transplantation in treating stroke.PMID:36867349 | DOI:10.1007/s12975-023-01144-6
Source: Cell Research - March 3, 2023 Category: Cytology Authors: Teppei Komatsu Hiroki Ohta Naoki Takakura Junichi Hata Tomomichi Kitagawa Yuta Kurashina Hiroaki Onoe Hirotaka James Okano Yasuyuki Iguchi Source Type: research

Infarct-preconditioning exosomes of umbilical cord mesenchymal stem cells promoted vascular remodeling and neurological recovery after stroke in rats
CONCLUSIONS: Our results demonstrated that infarct-preconditioned exosomes promoted neurological recovery after stroke by enhancing vascular endothelial remodeling, suggested that infarct-preconditioned exosomes could be a novel way to alleviate brain damage following a stroke.PMID:35902882 | DOI:10.1186/s13287-022-03083-9
Source: Cell Research - July 28, 2022 Category: Cytology Authors: Yi-Chao Ye Zhe-Han Chang Peng Wang You-Wei Wang Jun Liang Chong Chen Jing-Jing Wang Hong-Tao Sun Yi Wang Xiao-Hong Li Source Type: research

An Optimal Animal Model of Ischemic Stroke Established by Digital Subtraction Angiography-Guided Autologous Thrombi in Cynomolgus Monkeys
ConclusionOur study may provide an optimal non-human primate model for an in-depth study of the pathogenesis and treatment of focal cerebral ischemia.
Source: Frontiers in Neurology - April 25, 2022 Category: Neurology 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

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

Polyoxometalate nanoclusters act as broad-spectrum antioxidants to alleviate ischemic stroke by intrathecal injection
Conclusion: Intrathecal injection significantly improved the delivery and efficacy of POM nanoclusters to the brain, resulting in the rapid accumulation of POM nanoclusters in the ischemic penumbra. Due to this, we confirmed that the POM nanoclusters could be used as nano-antioxidants to inhibit oxidative stress as well as inflammatory damage effectively.
Source: Journal of Nuclear Medicine - May 14, 2020 Category: Nuclear Medicine Authors: Rosenkrans, Z., Li, S., Jiang, D., NI, D., Engle, J., Cai, W. Tags: Center for Molecular Imaging Innovation & amp; Translation (CMIIT) YIA Symposium Source Type: research

Molecular imaging of inflammation in the brain-heart axis after ischemic stroke: comparison of two murine stroke models.
Conclusions: In contrast to topical ET-1 application after craniotomy, the intravascular MCAo model enables imaging studies of brain-heart networking after stroke, which evokes elevated TSPO PET signal in both brain and heart. The severity of cerebral ischemic damage may contribute to cardiac dysfunction via systemic inflammatory networking.
Source: Journal of Nuclear Medicine - May 14, 2020 Category: Nuclear Medicine Authors: Hermanns, N., Bascunana, P., Langer, B. L. N., Wolf, B., Bankstahl, J., Ross, T., Bengel, F., Thackeray, J. Tags: Cardiovascular Council YIA Symposium Source Type: research

An update on clinical, pathological, diagnostic, and therapeutic perspectives of childhood leukodystrophies.
Authors: Ashrafi MR, Amanat M, Garshasbi M, Kameli R, Nilipour Y, Heidari M, Rezaei Z, Tavasoli AR Abstract Introduction: Leukodystrophies constitute heterogenous group of rare heritable disorders primarily affecting the white matter of central nervous system. These conditions are often under-appreciated among physicians. The first clinical manifestations of leukodystrophies are often nonspecific and can occur in different ages from neonatal to late adulthood periods. The diagnosis is, therefore, challenging in most cases.Area covered: Herein, the authors discuss different aspects of leukodystrophies. The authors used...
Source: Expert Review of Neurotherapeutics - December 13, 2019 Category: Neurology Tags: Expert Rev Neurother Source Type: research

Longitudinal investigation of ischemic stroke using magnetic resonance imaging: Animal model.
CONCLUSIONS: The MCAO animal model was successfully established on SD rats using the microsurgery to assess arterial embolization of intracranial tissue injury. PMID: 31306147 [PubMed - as supplied by publisher]
Source: Journal of X-Ray Science and Technology - July 16, 2019 Category: Radiology Tags: J Xray Sci Technol Source Type: research

Stroke Dysbiosis Index (SDI) in Gut Microbiome Are Associated With Brain Injury and Prognosis of Stroke
Conclusions: We developed an index to measure gut microbiota dysbiosis in stroke patients; this index was significantly correlated with patients' outcome and was causally related to outcome in a mouse model of stroke. Our model facilitates the potential clinical application of gut microbiota data in stroke and adds quantitative evidence linking the gut microbiota to stroke. Introduction Ischemic stroke imposes a heavy burden on society, with 24.9 million cases worldwide (1). Although intravenous thrombolysis and endovascular treatment greatly improve some patients' prognosis, the prognosis for most pa...
Source: Frontiers in Neurology - April 23, 2019 Category: Neurology Source Type: research

Neurophysiological Analysis of Intermanual Transfer in Motor Learning
In this study, MEPs were induced during the subject’s imaged kinesthetic MI. This involves recalling muscle contraction based on a muscle sensory image and was reported to indicate the activity of brain regions similar to those involved in actual muscle contraction (Ruby and Decety, 2001). In the transfer training group, the muscle sensory image evaluation correlated to the actual task execution with the right hand. As a result, it was easy to recall the kinesthetic MI for the training task, thus affecting MI of the non-trained limbs so that MEP changes occurred in the left hand’s MI. In addition, brain exc...
Source: Frontiers in Human Neuroscience - April 17, 2019 Category: Neuroscience Source Type: research

Transcranial Direct Current Stimulation Use in Warfighting: Benefits, Risks, and Future Prospects
Conclusion The aim of this paper was to examine whether military tDCS use can be efficacious and ethical in military settings. Our assessment is that tDCS offers a number of cognitive, motor, and perceptual enhancement opportunities which could provide value in military situations like training and operations. There is potential scope for use in a number of key areas that directly affect practical battlefield advantage and survivability, such as deceptive capabilities, risk-taking, threat detection, perception, and physiological improvement. Additionally, tDCS has the potential to improve command and control decision maki...
Source: Frontiers in Human Neuroscience - April 17, 2019 Category: Neuroscience Source Type: research

Interleukin-33 Protects Ischemic Brain Injury by Regulating Specific Microglial Activities
Publication date: 10 August 2018Source: Neuroscience, Volume 385Author(s): Qianping Luo, Yong Fan, Lili Lin, Jingjing Wei, Zuanfang Li, Yongkun Li, Susumu Nakae, Wei Lin, Qi ChenAbstractInterleukin-33 (IL-33), a novel member of the IL-1 family, expressed in many tissue and cell types, is involved in inflammation and immune functions. Previous studies suggest that IL-33 may play a role in ischemic stroke. Here, we evaluated the effect of IL-33 in cerebral ischemia–reperfusion-induced injury and investigated its underlying mechanism. Our data indicated that IL-33 deficiency exacerbated the neurological dysfunction caused b...
Source: Neuroscience - July 10, 2018 Category: Neuroscience Source Type: research