27,864 results match your criteria Middle Cerebral Artery Stroke


The Stroke-Induced Increase of Somatostatin-Expressing Neurons is Inhibited by Diabetes: A Potential Mechanism at the Basis of Impaired Stroke Recovery.

Cell Mol Neurobiol 2020 May 23. Epub 2020 May 23.

Department of Clinical Science and Education, Södersjukhuset, Internal Medicine, Karolinska Institutet, Stockholm, Sweden.

Type 2 diabetes (T2D) hampers recovery after stroke, but the underling mechanisms are mostly unknown. In a recently published study (Pintana et al. in Clin Sci (Lond) 133(13):1367-1386, 2019), we showed that impaired recovery in T2D was associated with persistent atrophy of parvalbumin+ interneurons in the damaged striatum. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10571-020-00874-7DOI Listing

ENT1 inhibition attenuates apoptosis by activation of cAMP/pCREB/Bcl2 pathway after MCAO in rats.

Exp Neurol 2020 May 20:113362. Epub 2020 May 20.

Department of Laboratory Medicine, Chongqing University Cancer Hospital, Chongqing, China. Electronic address:

Background And Purpose: The present study was designed to investigate the potential role and the mechanism of equilibrative nucleoside transporter 1 (ENT1) on neuronal apoptosis and neurological deficits after middle cerebral artery occlusion (MCAO) in rats.

Methods: One hundred and thirty-four male Sprague-Dawley rats were subjected to two hours of MCAO followed by reperfusion. The time course of the expression level of ENT1 and phosphorylation of CREB were detected by western blot and immunofluorescence staining. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.expneurol.2020.113362DOI Listing

Regulation of gene expression after combined scalp acupuncture and transcranial magnetic stimulation in middle cerebral artery occlusion mice.

Restor Neurol Neurosci 2020 May 18. Epub 2020 May 18.

Department of Physical & Rehabilitation Medicine, Chonnam National University Hospital & Medical School, Gwangju, Republic of Korea.

Background: The effect of combined repetitive transcranial magnetic stimulation (rTMS) and scalp acupuncture stimulation (SAS) on middle cerebral artery occlusion (MCAO) mice has not yet been reported. The regulation of gene expression after combined stimulation remains unclear.

Objective: To analyze gene expression patterns through ribonucleic acid (RNA) sequencing. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3233/RNN-190963DOI Listing

Sonography of optic nerve sheath diameter identifies patients with middle cerebral artery infarction at risk of a malignant course: a pilot prospective observational study.

J Neurol 2020 May 22. Epub 2020 May 22.

Department of Neuroradiology, Saarland University Medical Center, Homburg, Germany.

Introduction: To assess the value of optic nerve sheath diameter (ONSD) measurements at different time points to predict the malignant evolution in middle cerebral artery (MCA) infarction and to investigate the relationship between ONSD and infarct volume on follow-up computed tomography (CT).

Methods: In a single-center prospective observational study, we recruited patients with MCA infarction and age- and sex-matched controls. Clinical characteristics including NationaI Institutes of Health Stroke Scale (NIHSS) and ONSD measurement were assessed during the first five days after symptom onset. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00415-020-09906-0DOI Listing

Classification of Intracranial Stenoses: Discrepancies between Transcranial Duplex Sonography and Computed Tomography Angiography.

Ultrasound Med Biol 2020 May 18. Epub 2020 May 18.

Department of Neurology, University Hospital Charité, Berlin, Germany.

Transcranial color-coded duplex sonography (TCCS) and computed tomography angiography (CTA) are widely used to identify intracranial stenoses (ISs). We assessed concordance of IS grading between TCCS and CTA and proposed new TCCS criteria for severe IS ≥70%. One hundred two stroke patients (70 ± 13 y) with TCCS-identified IS were included. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.ultrasmedbio.2020.03.016DOI Listing

Antioxidative effects of a novel dietary supplement Neumentix in a mouse stroke model.

J Stroke Cerebrovasc Dis 2020 May 18:104818. Epub 2020 May 18.

Departments of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Dentistry and Pharmacy, 2-5-1 Shikata-cho, Okayama Okayama Japan. Electronic address:

Background: During an acute stroke, reactive oxygen species are overproduced and the endogenous antioxidative defense systems are disrupted. Therefore, antioxidative therapy can be a promising scheme to reduce the severity of stroke. Neumentix is a novel antioxidative supplement produced from a patented mint line and contains a high content of rosmarinic acid (RA). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jstrokecerebrovasdis.2020.104818DOI Listing

Neuroprotective Effect of Low-intensity Transcranial Ultrasound Stimulation in Endothelin-1-Induced Middle Cerebral Artery Occlusion in rats.

Brain Res Bull 2020 May 18. Epub 2020 May 18.

Qinhuangdao Municipal No. 1 Hospital, China. Electronic address:

Background: Ischemic stroke is one of the leading causes of death and disability worldwide. Low-intensity transcranial ultrasound stimulation (LITUS) is a promising neuroprotective treatment for ischemic stroke. Diffusion-weighted imaging (DWI) can be highly sensitive in the detection of ischemic brain injury. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.brainresbull.2020.05.006DOI Listing

Genome-wide transcriptomic analysis of microglia reveals impaired responses in aged mice after cerebral ischemia.

J Cereb Blood Flow Metab 2020 May 21:271678X20925655. Epub 2020 May 21.

Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery and UPMC Stroke Institute, University of Pittsburgh, Pittsburgh, PA, USA.

Senescence-associated alterations in microglia may have profound impact on cerebral homeostasis and stroke outcomes. However, the lack of a transcriptome-wide comparison between young and aged microglia in the context of ischemia limits our understanding of aging-related mechanisms. Herein, we performed RNA sequencing analysis of microglia purified from cerebral hemispheres of young adult (10-week-old) and aged (18-month-old) mice five days after distal middle cerebral artery occlusion or after sham operation. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1177/0271678X20925655DOI Listing

Hemorrhagic onset intracranial artery dissection of middle cerebral artery followed by progressive arterial stenosis with genetic variant RNF213 p.Arg4810Lys (rs112735431).

World Neurosurg 2020 May 10. Epub 2020 May 10.

Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan.

Background: Intracranial arterial dissection (IAD) is known to exhibit various patterns of arterial imaging features such as stenosis and dilation; however, the genetic background of IAD has not been elucidated so far. RNF213 was recently identified as a susceptibility gene for moyamoya disease (MMD) and intracranial artery stenosis (ICAS). More recently, RNF213 p. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2020.04.241DOI Listing

[Aplastic or Twig-like Middle Cerebral Artery with Cortical Subarachnoid Hemorrhage and Reversible Cerebral Vasoconstriction Syndrome during the Postpartum Period in a Juvenile Female:A Case Report].

No Shinkei Geka 2020 May;48(5):435-444

Department of Neurosurgery, National Hospital Organization Nagasaki Medical Center.

A 17-year-old female in a lethargic state with mild dysarthria was transferred to our hospital after experiencing a generalized tonic seizure immediately after giving birth. Head CT showed a cortical subarachnoid hemorrhage(cSAH)in the left frontoparietal convexity. Three-dimensional rotational angiography(3D-RA)revealed multifocal narrowing of the cortical branches of the left middle cerebral artery(MCA)and severe stenosis of the left M1 segment with plexiform collateral networks, suggesting the presence of reversible vasoconstriction syndrome(RCVS)and aplastic or twig-like MCA(Ap/T-MCA). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.11477/mf.1436204206DOI Listing

Biomarkers and genetic modulators of cerebral vasculopathy in sub-Saharan ancestry children with sickle cell anemia.

Blood Cells Mol Dis 2020 Jul 13;83:102436. Epub 2020 Apr 13.

Departamento de Genética Humana, Instituto Nacional de Saúde Dr. Ricardo Jorge, Lisbon, Portugal; Instituto de Saúde Ambiental (ISAMB), Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal. Electronic address:

We investigated biomarkers and genetic modulators of the cerebral vasculopathy (CV) subphenotype in pediatric sickle cell anemia (SCA) patients of sub-Saharan African ancestry. We found that one VCAM1 promoter haplotype (haplotype 7) and VCAM1 single nucleotide variant rs1409419_T were associated with stroke events, stroke risk, as measured by time-averaged mean of maximum velocity in the middle cerebral artery, and with high serum levels of the hemolysis biomarker lactate dehydrogenase. Furthermore, VCAM-1 ligand coding gene ITGA4 variants rs113276800_A and rs3770138_T showed a positive association with stroke events. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.bcmd.2020.102436DOI Listing

Age-dependent involvement of gut mast cells and histamine in post-stroke inflammation.

J Neuroinflammation 2020 May 19;17(1):160. Epub 2020 May 19.

Department of Neurology, University of Texas McGovern Medical School, Houston, USA.

Background: Risk of stroke-related morbidity and mortality increases significantly with age. Aging is associated with chronic, low-grade inflammation, which is thought to contribute to the poorer outcomes after stroke seen in the elderly. Histamine (HA) is a major molecular mediator of inflammation, and mast cells residing in the gut are a primary source of histamine. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1186/s12974-020-01833-1DOI Listing

Delayed recanalization after MCAO ameliorates ischemic stroke by inhibiting apoptosis via HGF/c-met/STAT3/Bcl-2 pathway in rats.

Exp Neurol 2020 May 16:113359. Epub 2020 May 16.

Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA 92354, USA; Department of Neurosurgery, Loma Linda University, Loma Linda, CA 92354, USA; Department of Anesthesiology, Loma Linda University Medical Center, Loma Linda, CA 92354, USA. Electronic address:

The activation of tyrosine kinase receptor c-Met by hepatocyte growth factor (HGF) showed an anti-apoptotic effect in numerous disease models. This study aimed to investigate the neuroprotective mechanism of the HGF/c-Met axis-mediated anti-apoptosis underlying the delayed recanalization in a rat model of middle cerebral artery occlusion (MCAO). Permanent MCAO model (pMCAO) was induced by intravascular filament insertion. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.expneurol.2020.113359DOI Listing

A non-human primate model of stroke reproducing endovascular thrombectomy and allowing long-term imaging and neurological read-outs.

J Cereb Blood Flow Metab 2020 May 19:271678X20921310. Epub 2020 May 19.

CREATIS, CNRS UMR-5220, INSERM U1206, Université Lyon 1, INSA Lyon Bât. Blaise Pascal, Villeurbanne, France.

Stroke is a devastating disease. Endovascular mechanical thrombectomy is dramatically changing the management of acute ischemic stroke, raising new challenges regarding brain outcome and opening up new avenues for brain protection. In this context, relevant experiment models are required for testing new therapies and addressing important questions about infarct progression despite successful recanalization, reversibility of ischemic lesions, blood-brain barrier disruption and reperfusion damage. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1177/0271678X20921310DOI Listing

N-methyladenosine demethylases Alkbh5/Fto regulate cerebral ischemia-reperfusion injury.

Ther Adv Chronic Dis 2020 29;11:2040622320916024. Epub 2020 Apr 29.

Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325035, China Wencheng County People's Hospital, Wenzhou, Zhejiang, China.

Background: Although N-methyladenosine (mA) plays a very important role in different biological processes, its function in the brain has not been fully explored. Thus, we investigated the roles of the RNA demethylases Alkbh5/Fto in cerebral ischemia-reperfusion injury.

Methods: We used a rat model and primary neuronal cell culture to study the role of mA and Alkbh5/Fto in the cerebral cortex ischemic penumbra after cerebral ischemia-reperfusion injury. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1177/2040622320916024DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7222229PMC

Expression of Long Non-coding RNA RGD1566344 in the Brain Cortex of Male Mice After Focal Cerebral Ischemia-Reperfusion and the Neuroprotective Effect of a Non-coding RNA RGD1566344 Inhibitor.

Cell Mol Neurobiol 2020 May 18. Epub 2020 May 18.

Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, People's Republic of China.

Ischemic stroke (IS) remains a major cause of disability and death. The changes in long non-coding RNA (lncRNA) RGD1566344 expression in the mouse cerebral cortex, including the infarct and penumbra regions after IS, are not clear. Less is known about the impact and underlying mechanisms of RGD1566344 in IS. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10571-020-00877-4DOI Listing

Cerebral Ischemia-Reperfusion Injury: Lysophosphatidic Acid Mediates Inflammation by Decreasing the Expression of Liver X Receptor.

J Mol Neurosci 2020 May 18. Epub 2020 May 18.

Department of Neurology, Wuhan Fourth Hospital, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, HanZheng Street 473# QiaoKou District, Wuhan, 430033, China.

Lysophosphatidic acid (LPA), a ubiquitous phospholipid, plays a crucial role in the pathogenesis and pathophysiological process of neurological diseases, which constitute the pathological course after cerebral ischemia. Nevertheless, the molecular mechanisms associated with the pathogenic roles of LPA remain elusive. In this study, we evaluated the expression of the liver X receptor (LXR) and nuclear factor kappa B (NFκB) by Western blotting, quantified the levels of IL-1β, IL-6, TNF-α, and LPA by ELISA, and evaluated apoptosis and infarct by TUNEL (terminal deoxynucleotidyl transferase (TdT) dUTP nick-end labeling) and TTC (triphenyltetrazolium chloride) staining respectively in Sprague-Dawley (SD) rats after middle cerebral artery occlusion (MCAO). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s12031-020-01554-3DOI Listing

Up-regulated CCL2 promotes ischemic stroke via chemokine signaling pathway.

Ann Vasc Surg 2020 May 15. Epub 2020 May 15.

Department of rehabilitation medicine, Zhejiang hospital, Hangzhou, China. Electronic address:

Objective: This study aims to evaluate the potential effect and the underlying mechanism of CCL2 in ischemic stroke.

Methods: An integrated bioinformatics analysis was performed to identify the differentially expressed (DE) genes and their related pathways in ischemic stroke. En vivo study of a rat model of middle cerebral artery occlusion (MCAO) was further established to assess the effect of C-C Motif Chemokine Ligand 2 (CCL2) on severity of neurologic impairments. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.avsg.2020.04.047DOI Listing

Inter-patient variations in flow boundary conditions at middle cerebral artery from 7T PC-MRI and influence on Computational Fluid Dynamics of intracranial aneurysms.

Comput Biol Med 2020 May 15;120:103759. Epub 2020 Apr 15.

Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA; Canon Stroke and Vascular Research Center, University at Buffalo, The State University of New York, Buffalo, NY, USA. Electronic address:

Background: Computational fluid dynamics(CFD) of intracranial aneurysms requires flow boundary conditions(BCs) as inputs. Patient-specific BCs are usually unavailable and substituted by literature-derived generic BCs. Therefore, we investigated inter-patient BC variations and their influence on middle cerebral artery aneurysmal hemodynamics. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.compbiomed.2020.103759DOI Listing

The influence of occluded artery and etiology of acute ischemic stroke on the long term outcomes after thrombectomy. A PRAGUE-16 substudy.

EuroIntervention 2020 May 19. Epub 2020 May 19.

Department of Cardiology, Third Faculty of Medicine, Charles University and University Hospital Kralovske Vinohrady, Prague, Czech Republic.

Aims: Thrombectomy is an effective treatment for acute ischemic stroke (AIS). The aim was to compare clinical outcomes with intracranial artery occlusion site among AIS patients treated in the setting of a cardiology cath-lab.

Methods And Results: Single center, prospective registry of 214 consecutive patients with AIS enrolled between 2012 and 2018. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.4244/EIJ-D-19-00997DOI Listing

SK4 calcium-activated potassium channels activated by sympathetic nerves enhances atrial fibrillation vulnerability in a canine model of acute stroke.

Heliyon 2020 May 7;6(5):e03928. Epub 2020 May 7.

Department of Cardiology, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuchang, Wuhan City, 430060, PR China.

Background: New-onset atrial fibrillation (AF) is common in patients with acute stroke (AS). Studies have shown that intermediate-conductance calcium-activated potassium channel channels (SK4) play an important role in cardiomyocyte automaticity. The aim of this study was to investigate the effects of SK4 on AF vulnerability in dogs with AS. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.heliyon.2020.e03928DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7215192PMC

Tetrandrine alleviates cerebral ischemia/reperfusion injury by suppressing NLRP3 inflammasome activation via Sirt-1.

PeerJ 2020 7;8:e9042. Epub 2020 May 7.

Department of Cardiology, Zhejiang Xiaoshan Hospital, Hangzhou, Zhejiang Province, China.

Background & Aims: Tetrandrine (Tet) has been reported to have anti-inflammatory effects and protect from the ischemic strokes. The NLRP3 inflammasome plays a key role in cerebral ischemia/reperfusion (I/R)-induced inflammatory lesions. However, the molecular mechanisms of Tet related to the progression of cerebral ischemia are still unclear. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.7717/peerj.9042DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7211409PMC

Baicalein exerts neuroprotective effect against ischaemic/reperfusion injury via alteration of NF-kB and LOX and AMPK/Nrf2 pathway.

Inflammopharmacology 2020 May 16. Epub 2020 May 16.

Neurosurgery, Affiliated Hospital of Hebei University, Baoding, 071000, Hebei, China.

ischaemic stroke accounts for almost 11% of all deaths worldwide and has a high incidence of permanent disability among patients. Baicalein has many beneficial pharmacological properties, including anti-inflammatory and anti-oxidant effects. However, the neuroprotective effect of baicalein is still unclear. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10787-020-00714-6DOI Listing

Astragaloside IV regulates the HIF/VEGF/Notch signaling pathway through miRNA-210 to promote angiogenesis after ischemic stroke.

Restor Neurol Neurosci 2020 May 12. Epub 2020 May 12.

Department of TCM Diagnostics, Hebei University of Chinese Medicine, Shijiazhuang, China.

Background: Astragaloside IV (AS-IV) is one of the main active ingredients of Astragalusmembranaceus. Studies have shown that AS-IV stimulates angiogenesis, including cell proliferation, migration, and neovascularization. However, the relevant mechanism remains unclear. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3233/RNN-201001DOI Listing

Shuxuening injection facilitates neurofunctional recovery via down-regulation of G-CSF-mediated granulocyte adhesion and diapedesis pathway in a subacute stroke mouse model.

Biomed Pharmacother 2020 May 14;127:110213. Epub 2020 May 14.

State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Beihua South Road, JingHai District, Tianjin, 301617, China; Research and Development Center of TCM, Tianjin International Joint Academy of Biotechnology & Medicine, 220 Dongting Road, TEDA, Tianjin, 300457, China. Electronic address:

Post-stroke neural damage is a serious health concern which does not yet have an effective treatment. We have shown previously that Shuxuening injection (SXNI), a Ginkgo biloba extract-based natural medicine, protects brain after an acute ischemic stroke, but its efficacy for post-stroke recovery is not known. This study was to investigate whether SXNI can improve the prognosis of stroke at a subacute phase. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biopha.2020.110213DOI Listing

HMGB1 promoted P-glycoprotein at the blood-brain barrier in MCAO rats via TLR4/NF-κB signaling pathway.

Eur J Pharmacol 2020 May 14:173189. Epub 2020 May 14.

Key Laboratory of Natural Medicine and Immune Engineering, Henan University, Kaifeng, 475004, People's Republic of China. Electronic address:

P-glycoprotein (P-gp) is located on the luminal surface of brain vascular endothelium and its status may determine the delivery of the agents into the brain tissues. Previous study showed that upregulation of P-gp at the blood-brain barrier (BBB) after ischemic stroke were mediated by nuclear factor-B (NF-kB) and tumour necrosis factor-α (TNF-α). Based on middle cerebral artery occlusion (MCAO) rats and oxygen-glucose deprivation (OGD) in co-culture of rat brain microvessel endothelial cells (rBMECs) and astrocytes system, the present data indicated that potentiated P-gp expression and activity in brain microvessels or rBMECs were associated with the increase in high-mobility group box 1 (HMGB1), Toll-like receptor 4 (TLR4) and activation of NF-kB and that HMGB1 can release from nucleus to the cytoplasm in activated astrocytes, then into the medium. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.ejphar.2020.173189DOI Listing

C-reactive Protein is A Predictor of Deterioration of Acute Internal Carotid Artery M1 Qcclusion Following Recanalization.

J Stroke Cerebrovasc Dis 2020 May 13:104919. Epub 2020 May 13.

Department of Stroke Medicine, Kawasaki Medical School, General Medical Center, 2-6-1 Kitaku Nakasannge, Okayama 700-0975, Japan; Department of Stroke Medicine, Kawasaki Medical School, Japan. Electronic address:

Introduction: Administration of intravenous recombinant tissue plasminogen activator (rt-PA) and mechanical thrombectomy (MT) have become standard therapeutic approaches for acute internal carotid artery and middle cerebral artery M1 segment occlusion (ICA/M1O). However, clinical deterioration of the condition is still observed in some cases.

Objective: We aimed to identify patients' factors associated with exacerbation. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jstrokecerebrovasdis.2020.104919DOI Listing

Distal arterial occlusions in patients with mild strokes - is endovascular therapy superior to thrombolysis alone?

J Stroke Cerebrovasc Dis 2020 May 13:104868. Epub 2020 May 13.

Department of Neurology, University Hospital Heidelberg, Germany. Electronic address:

Background And Purpose: Safety and efficacy of endovascular thrombectomy (EVT) in patients with mild stroke syndromes is unclear, especially in distal vessel occlusions.

Methods: We analysed in our stroke database (HeiReKa) between 2002 and April 2019 safety and efficacy of EVT compared to intravenous thrombolysis (IVT) in patients with occlusions distal to the M1 segment of the middle cerebral artery and the top of the basilar artery who presented with a National Institute of Health Stroke Scale (NIHSS) below 6. Excellent (good) outcome was defined as modified rankin scale (mRS) 0-1 (0-2) or return to baseline mRS (good) after 3 months. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jstrokecerebrovasdis.2020.104868DOI Listing

A Polyphenolic Complex Attenuates Inflammatory Response and Blood-Brain Barrier Disruption.

Curr Neurovasc Res 2020 May 16. Epub 2020 May 16.

Department of Neurology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama. Japan.

Background: Cerebral ischemia causes strong inflammatory response. Neumentix is a dietary supplement containing 14.9% rosmarinic acid and 29. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.2174/1567202617666200517105727DOI Listing

α7nAchR mediates transcutaneous auricular vagus nerve stimulation-induced neuroprotection in a rat model of ischemic stroke by enhancing axonal plasticity.

Neurosci Lett 2020 May 13:135031. Epub 2020 May 13.

Department of Neurology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China. Electronic address:

Axonal plasticity is important for neurofunctional recovery after stroke. This study aimed to explore the role of transcutaneous auricular vagus nerve stimulation (ta-VNS) on axonal plasticity and its underlying association with the α7 nicotinic acetylcholine receptor(α7nAchR) after cerebral ischemia/reperfusion (I/R) injury. Adult male Sprague-Dawley rats were pretreated by intraperitoneal injection with either phosphate-buffered saline (PBS) or an α7nAchR antagonist and then subjected to middle cerebral artery occlusion and ta-VNS treatment. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.neulet.2020.135031DOI Listing

Investigating the origin of pH-sensitive magnetization transfer ratio asymmetry MRI contrast during the acute stroke: Correction of T change reveals the dominant amide proton transfer MRI signal.

Magn Reson Med 2020 May 16. Epub 2020 May 16.

Yerkes Imaging Center, Yerkes National Primate Research Center, Emory University, Atlanta, Georgia, USA.

Purpose: Amide proton transfer (APT) MRI is promising to serve as a surrogate metabolic imaging biomarker of acute stroke. Although the magnetization transfer ratio asymmetry (MTR ) has been used commonly, the origin of pH-weighted MRI effect remains an area of investigation, including contributions from APT, semisolid MT contrast asymmetry, and nuclear Overhauser enhancement effects. Our study aimed to determine the origin of pH-weighted MTR contrast following acute stroke. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1002/mrm.28313DOI Listing

Spatial coefficient of variation applied to arterial spin labeling MRI may contribute to predict surgical revascularization outcomes in pediatric moyamoya vasculopathy.

Neuroradiology 2020 May 15. Epub 2020 May 15.

Neuroradiology Unit, IRCCS Istituto Giannina Gaslini, via Gaslini 5, 16147, Genoa, Italy.

Purpose: In moyamoya vasculopathy, prolonged arterial transit time may increase the arterial spin labeling (ASL) signal heterogeneity, which can be quantitatively expressed by the spatial coefficient of variation of ASL-CBF (ASL-sCoV). The aim was to compare the accuracy of ASL-sCoV and ASL-CBF with dynamic susceptibility contrast (DSC)-CBF and time-to-peak (DSC-TTP) in the evaluation of perfusion changes and clinical outcome after encephalo-duro-arterio-myo-synangiosis (EDAMS) in pediatric moyamoya patients.

Methods: A total of 37 children with moyamoya vasculopathy (mean age 6. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00234-020-02446-4DOI Listing

Intravenous cangrelor and oral ticagrelor as an alternative to clopidogrel in acute intervention.

J Neurointerv Surg 2020 May 15. Epub 2020 May 15.

Miami Cardiac & Vascular Institute, Baptist Health South Florida, Miami, Florida, USA.

Background: Dual antiplatelet therapy (DAP) is necessary to prevent thromboembolic events during carotid stenting, stent-assisted coil embolization, and implant of flow diverters (FD). However, DAP in the acute phase may be challenging. An intravenous alternative, cangrelor, has rapid onset, short plasma half-life, and more reliable antiplatelet action for acute interventions. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1136/neurintsurg-2020-015841DOI Listing

The Relation Between Aortic Arch Branching Types and the Laterality of Cardio-Embolic Stroke.

J Stroke Cerebrovasc Dis 2020 May 13:104917. Epub 2020 May 13.

Department of Neuroscience, Stroke Unit - Neurology Clinic, Ospedale Civile di Baggiovara, AOU di Modena, Italy; Faculty of Medicine, Department of Neurology, Mansoura University, Mansoura 35511, Egypt. Electronic address:

Background And Purpose: The trajectory of cardiogenic emboli could be affected by anatomical and flow characteristics of the aortic arch. We aimed to study the relation between the different aortic arch patterns and the laterality of cardiogenic emboli.

Methods: 192 cardioembolic strokes were classified into 3 groups according to the type of the aortic arch; type 1 (n = 69), type 2 (n = 49), type 3 (n = 74). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jstrokecerebrovasdis.2020.104917DOI Listing

Dynamic cerebral autoregulation is an independent outcome predictor of acute ischemic stroke after endovascular therapy.

BMC Neurol 2020 May 15;20(1):189. Epub 2020 May 15.

Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, China.

Background: Endovascular therapy (EVT) is increasingly used to improve cerebral reperfusion after moderate-to-severe acute ischemic stroke (AIS). However, the influence of hemodynamic factors on clinical outcome is still unclear after EVT. Dynamic cerebral autoregulation (dCA) is an important brain reserve mechanism and is impaired after AIS. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1186/s12883-020-01737-wDOI Listing

Impact of complete recanalization on clinical recovery in cardioembolic stroke patients with M2 occlusion.

J Neurol Sci 2020 May 5;415:116873. Epub 2020 May 5.

Department of Neurological Science, Graduate School of Medicine, Nippon Medical School, Japan.

Background And Purpose: We investigated the impact of complete recanalization beyond partial recanalization in distal (M2) middle cerebral artery (MCA) occlusion.

Methods: Data regarding M2 occlusion patients treated with endovascular thrombectomy (EVT) and/or intravenous thrombolysis (tPA) were reviewed from our prospective EVT registry and multicenter tPA (YAMATO study) data bank. Complete recanalization was modified thrombolysis with cerebral infarction score (TICI) of 3 at the end of EVT or similar appearances of both MCAs on magnetic resonance angiography (MRA) within 1. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jns.2020.116873DOI Listing

Astilbin protects against cerebral ischaemia/reperfusion injury by inhibiting cellular apoptosis and ROS-NLRP3 inflammasome axis activation.

Int Immunopharmacol 2020 May 6;84:106571. Epub 2020 May 6.

Department of Neurosurgery, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China; Modern Medical Research Center, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China. Electronic address:

Background: Ischaemic stroke is a lethal cerebrovascular disease that occurs worldwide. Astilbin is a natural flavonoid compound with various physiological activities. The purpose of this study was to investigate the neuroprotective effects of Astilbin after cerebral ischaemia reperfusion (I/R) injury. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.intimp.2020.106571DOI Listing

Salvianolic Acid D Alleviates Cerebral Ischemia-Reperfusion Injury by Suppressing the Cytoplasmic Translocation and Release of HMGB1-Triggered NF-B Activation to Inhibit Inflammatory Response.

Mediators Inflamm 2020 22;2020:9049614. Epub 2020 Jan 22.

State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.

Inflammatory response participates in the overall pathophysiological process of stroke. It is a promising strategy to develop antistroke drugs targeting inflammation. This study is aimed at investigating the therapeutic effect and anti-inflammatory mechanism of salvianolic acid D (SalD) against cerebral ischemia/reperfusion (I/R) injury. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1155/2020/9049614DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7204335PMC
January 2020

Modulatory effect of 17β-estradiol on myeloid cell infiltration into the male rat brain after ischemic stroke.

J Steroid Biochem Mol Biol 2020 May 11:105667. Epub 2020 May 11.

University Clinic, Institute of Neuroanatomy, RWTH Aachen University, Germany. Electronic address:

Ischemic stroke is the leading cause of human disability and mortality in the world. Neuroinflammation is the main pathological event following ischemia which contributes to secondary brain tissue damage which is driven by infiltration of circulating immune cells such as macrophages. Because of neuroprotective properties against ischemic brain damage, estrogens have the potential to become of therapeutic interest. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jsbmb.2020.105667DOI Listing

Impaired glymphatic system in secondary degeneration areas after ischemic stroke in rats.

J Stroke Cerebrovasc Dis 2020 May 10:104828. Epub 2020 May 10.

Department of Radiology, Huashan Hospital, Fudan University, No. 12 Middle Urumqi Road, Shanghai 200040, China. Electronic address:

Background: Pathomechanism of secondary degeneration in remote regions after ischemic stroke has not been totally clarified. Contrast-enhanced MRI with injecting Gd-DTPA in cisterna magna (CM) is regarded as an efficient method to measure glymphatic system function in brain. Our research aimed at evaluating glymphatic system changes in secondary degeneration areas by contrast-enhanced MRI. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jstrokecerebrovasdis.2020.104828DOI Listing

Distinct Commensal Bacterial Signature in the Gut Is Associated With Acute and Long-Term Protection From Ischemic Stroke.

Stroke 2020 May 14:STROKEAHA120029262. Epub 2020 May 14.

From the Feil Family Brain and Mind Research Institute, Weill Cornell Medical College, New York.

Background and Purpose- Commensal gut bacteria have a profound impact on stroke pathophysiology. Here, we investigated whether modification of the microbiota influences acute and long-term outcome in mice subjected to stroke. Methods- C57BL/6 male mice received a cocktail of antibiotics or single antibiotic. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1161/STROKEAHA.120.029262DOI Listing

Protective Effect of ApoA1 (Apolipoprotein A1)-Milano in a Rat Model of Large Vessel Occlusion Stroke.

Stroke 2020 May 14:STROKEAHA119027898. Epub 2020 May 14.

From the Department of neurology and stroke center, Bichat hospital, Paris, France (C.D., P.A.).

Background and Purpose- Previous experimental studies found that the infusion of human purified nascent HDL (high-density lipoprotein) significantly reduced infarct volume and hemorrhagic transformation rate by decreasing neutrophil recruitment. ApoA1-M (apolipoprotein A1-Milano) is a natural variant of human ApoA1 that confers protection against atherosclerosis. Recombinant ApoA1-M has been formulated as a complex with phospholipids to mimic the properties of nascent HDL. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1161/STROKEAHA.119.027898DOI Listing

Cerebral haemodynamics with head position changes post-ischaemic stroke: A systematic review and meta-analysis.

J Cereb Blood Flow Metab 2020 May 13:271678X20922457. Epub 2020 May 13.

The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Heidelberg, Australia.

The effects of upright postures on the cerebral circulation early post-ischaemic stroke are not fully understood. We conducted a systematic review and meta-analysis to investigate the effects of head positioning on cerebral haemodynamics assessed by imaging methods post-ischaemic stroke. Of the 21 studies included ( = 529), 15 used transcranial Doppler. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1177/0271678X20922457DOI Listing

Endovascular Hyaluronidase Application Through Superselective Angiography to Rescue Blindness Caused by Hyaluronic Acid Injection.

Aesthet Surg J 2020 May 13. Epub 2020 May 13.

Zhejiang Provincial People's Hospital, affiliated with Hangzhou Medical College, Hangzhou, Zhejiang Province, China.

Background: Blindness is a rare but catastrophic complication of facial hyaluronic acid (HA) injection. Although various means to rescue visual impairment have been employed, no consensus regarding effective treatment has yet been reached. We organized a multidisciplinary team to address this emergency situation by means of endovascular hyaluronidase application. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1093/asj/sjaa036DOI Listing
May 2020
2.034 Impact Factor

Usefulness of deep learning-assisted identification of hyperdense MCA sign in acute ischemic stroke: comparison with readers' performance.

Jpn J Radiol 2020 May 12. Epub 2020 May 12.

Department of Radiology and Nuclear Medicine, Research Institute for Brain and Blood Vessels-Akita, 6-10 Senshu-kubota-machi, Akita, 010-0874, Japan.

Purpose: To evaluate the usefulness of deep learning-assisted diagnosis for identifying hyperdense middle cerebral artery sign (HMCAS) on non-contrast computed tomography in comparison with the diagnostic performance of neuroradiologists.

Materials And Methods: We obtained 46 HMCAS-positive and 52 HMCAS-negative test samples extracted using 50-pixel-diameter circular regions of interest. Five neuroradiologists undertook an initial diagnostic performance test by describing the HMCAS-positive prediction rate in each sample. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s11604-020-00986-6DOI Listing

Cathodal tDCS exerts neuroprotective effect in rat brain after acute ischemic stroke.

BMC Neurosci 2020 May 12;21(1):21. Epub 2020 May 12.

Department of Radiation Biology, Faculty of Preventive Medicine, Fourth Military Medical University, Xi'an, 710032, China.

Background: Transcranial direct current stimulation (tDCS) is a non-invasive brain modulation technique that has been proved to exert beneficial effects in the acute phase of stroke. To explore the underlying mechanism, we investigated the neuroprotective effects of cathodal tDCS on brain injury caused by middle cerebral artery occlusion (MCAO).

Results: We established the MCAO model and sham MCAO model with an epicranial electrode implanted adult male Sprague-Dawley rats, and then they were randomly divided into four groups (MCAO + tDCS, MCAO + sham tDCS (Sham), Control + tDCS and Control + Sham group). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1186/s12868-020-00570-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7216334PMC

LOX-1 (Lectin-Like Oxidized Low-Density Lipoprotein Receptor-1) Deletion Has Protective Effects on Stroke in the Genetic Background of Stroke-Prone Spontaneously Hypertensive Rat.

Stroke 2020 May 1:STROKEAHA120029421. Epub 2020 May 1.

From the Department of Gene Diagnostics and Therapeutics, National Center for Global Health and Medicine (Y.-Q.L., Y.M., M.I., T.A., H.S., M.T., F.T., N.K.).

Background and Purpose- oxLDL (oxidized low-density lipoprotein) has been known for its potential to induce endothelial dysfunction and used as a major serological marker of oxidative stress. Recently, LOX-1 (lectin-like oxidized low-density lipoprotein receptor-1), a lectin-like receptor for oxLDL, has attracted attention in studies of neuronal apoptosis and stroke. We aim to investigate the impact of -deficiency on spontaneous hypertension-related brain damage in the present study. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1161/STROKEAHA.120.029421DOI Listing

Low-Frequency Vibrations Enhance Thrombolytic Therapy and Improve Stroke Outcomes.

Stroke 2020 May 1:STROKEAHA120029405. Epub 2020 May 1.

Department of Neurology, Carver College of Medicine, University of Iowa (E.C.L.).

Background and Purpose- We aim to determine the potential impact on stroke thrombolysis of drip-and-ship helicopter flights and specifically of their low-frequency vibrations (LFVs). Methods- Mice with a middle cerebral artery autologous thromboembolic occlusion were randomized to receive rtPA (recombinant tissue-type plasminogen activator; or saline) 90 minutes later in 3 different settings: (1) a motion platform simulator that reproduced the LFV signature of the helicopter, (2) a standardized actual helicopter flight, and (3) a ground control. Results- Mice assigned to the LFV simulation while receiving tPA had smaller infarctions (31. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1161/STROKEAHA.120.029405DOI Listing
May 2020
5.723 Impact Factor

Teaching Impact on Telestroke Nurse Recognition of Large Vessel Occlusion Computerized Tomography Perfusion Patterns.

Stroke 2020 May 1:STROKEAHA119028757. Epub 2020 May 1.

Atrium Health's Carolinas Medical Center, Department of Emergency Medicine, Charlotte, NC (A.W.A.).

Background and Purpose- A distinguishing feature of our Stroke Network is telestroke nurses who remotely facilitate evaluations. To enable expeditious transfer of large vessel occlusion (LVO) acute ischemic stroke patients presenting to nonthrombectomy centers, the telestroke nurses must immediately identify color thresholded computerized tomography perfusion (CTP) patterns consistent with internal carotid artery (ICA), middle cerebral artery (MCA) segment 1(M1), and MCA segment 2 (M2) LVO acute ischemic stroke. Methods- We developed a 6-month series of tutorials and tests for 16 telestroke nurses, focusing on CTP pattern recognition consistent with ICA, M1, or M2 LVO acute ischemic stroke. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1161/STROKEAHA.119.028757DOI Listing

Assessment of Atherosclerosis in Peripheral and Central Circulation in Adult β Thalassemia Intermedia Patients by Color Doppler Ultrasound: Egyptian Experience.

J Vasc Res 2020 May 12:1-7. Epub 2020 May 12.

Clinical Hematology Unit, Internal Medicine Department, Kasr Al Ainy Faculty of Medicine, Cairo University, Cairo, Egypt,

Background: Atherosclerosis has been extensively studied in thalassemia major (TM) and sickle cell disease but not yet in β thalassemia intermedia (TI). Previous studies concerned with TM were performed in children. TI patients usually live longer and, thus, are more prone to complications of atherosclerosis. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1159/000506518DOI Listing