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Cerebral infarction

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https://www.readbyqxmd.com/read/29036822/cortical-cerebral-microinfarcts-on-3-tesla-mri-in-patients-with-vascular-cognitive-impairment
#1
Doeschka A Ferro, Susanne J van Veluw, Huiberdina L Koek, Lieza G Exalto, Geert Jan Biessels
BACKGROUND: Cerebral microinfarcts (CMIs) are small ischemic lesions that are a common neuropathological finding in patients with stroke or dementia. CMIs in the cortex can now be detected in vivo on 3 Tesla MRI. OBJECTIVE: To determine the occurrence of CMIs and associated clinical features in patients with possible vascular cognitive impairment (VCI). METHOD: 182 memory-clinic patients (mean age 71.4±10.6, 55% male) with vascular injury on brain MRI (i...
October 12, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29036757/a-case-of-medullary-infarction-presented-initial-symptoms-similar-to-meniere-s-disease
#2
Jang Hee Park, Dong Hyun Kim, Jae Moon Sung, Chang Woo Kim
Fluctuating hearing loss and vertigo are the typical presentations of Meniere's disease. However, it is unusual that fluctuating hearing loss and vertigo are caused by vertebral artery occlusion or cerebral infarction. Here, we described the case of a 54-year-old male patient with hypertension and diabetes mellitus who presented with fluctuating hearing loss in his left ear and severe whirling-type dizziness without associated neurological signs or symptoms. Temporal magnetic resonance imaging (MRI) was normal...
October 17, 2017: Journal of Audiology & Otology
https://www.readbyqxmd.com/read/29035456/circulating-mir-29b-and-mir-424-as-prognostic-markers-in-patients-with-acute-cerebral-infarction
#3
Yue-Zhan Zhang, Jun Wang, Feng Xu
BACKGROUND: Down-regulation of miR-29b and miR-424 have been observed in patients with acute cerebral infarction (ACI); however, the clinical significance of circulating miR-29b and miR-424 as prognostic markers still requires further investigation. METHODS: A total of 45 patients diagnosed with ACI and 45 healthy volunteers were enrolled in this study, and the clinical information of the patients were collected. The serum samples of the participants were collected and stored at -80°C...
October 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/29034755/the-alliance-with-expanding-blood-volume-and-correcting-anemia-is-an-effective-therapeutic-measure-for-the-adult-anemia-patients-of-acute-cerebral-infarction
#4
Zunyu Ke, Yu Zhao, Chuanling Wang, Zhiyou Cai
Anemia is closely associated with the occurrence and development of ischemic stroke. However, the clinical association between anemia and ischemic stroke remains unclear. We evaluated the clinical features of adult patients of acute cerebral infarction with anemia, and to provide a reference in the treatment of the anemia patients of acute cerebral infarction, and seek a better treatment different from the other non-anemia causes. We found that anemia has rendered valuable service to neuronal damage and subsequent deterioration of acute cerebral infarction in the adults...
October 15, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29033392/mechanical-recanalization-in-ischemic-anterior-circulation-stroke-within-an-8-hour-time-window-a-real-world-experience
#5
Dagmar Krajíčková, Antonín Krajina, Roman Herzig, Miroslav Lojík, Vendelín Chovanec, Jan Raupach, Eva Vítková, Jan Waishaupt, Oldřich Vyšata, Martin Vališ
PURPOSE: We aimed to assess the safety and effectiveness of mechanical recanalization in patients with ischemic stroke in the anterior circulation within 8 h since symptoms onset and with unknown onset time. We compared time intervals <6 h vs. 6-8 h/unknown onset time, as only limited data are available for a time window beyond 6 h. METHODS: Our cohort included 110 consecutive patients (44 males; mean age, 73.0±11.5 years) with ischemic stroke in the anterior circulation due to the acute occlusion of a large intracranial artery who underwent mechanical recanalization within an 8-hour time window or with unknown onset time...
October 16, 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/29031497/patent-foramen-ovale-and-the-risk-of-cerebral-infarcts-in-acute-pulmonary-embolism-a-prospective-observational-study
#6
David Vindiš, Martin Hutyra, Daniel Šaňák, Michal Král, Eva Čecháková, Simona Littnerová, Tomáš Adam, Jan Přeček, Štěpán Hudec, Markéta Ječmenová, Miloš Táborský
BACKGROUND: Pulmonary embolism (PE) is associated with a risk of consecutive paradoxical embolism with brain infarction through a patent foramen ovale (PFO). The aims of this study were to assess the rate of new ischemic brain lesions (IBLs) using magnetic resonance imaging (MRI) during a 12-month follow-up period with anticoagulation and to evaluate the potential relationship with the presence of PFO on transesophageal echocardiography (TEE). SUBJECTS AND METHODS: Seventy-eight patients with acute PE underwent baseline contrast TEE with brain MRI...
October 11, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29030420/new-biomarker-for-acute-ischaemic-stroke-plasma-glycogen-phosphorylase-isoenzyme-bb
#7
Kwang-Yeol Park, Ilknur Ay, Ross Avery, Juan Alfredo Caceres, Matthew S Siket, Octavio M Pontes-Neto, Hui Zheng, Natalia S Rost, Karen L Furie, Alma Gregory Sorensen, Walter J Koroshetz, Hakan Ay
BACKGROUND: Glycogen phosphorylase is the key enzyme that breaks down glycogen to yield glucose-1-phosphate in order to restore depleted energy stores during cerebral ischaemia. We sought to determine whether plasma levels of glycogen phosphorylase BB (GPBB) isoform increased in patients with acute ischaemic stroke (AIS). METHODS: We studied plasma GPBB levels within 12 hours and again at 48±24 hours of symptom onset in 172 patients with imaging-confirmed AIS and 133 stroke-free individuals...
October 13, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29025779/scorpion-bite-induced-ischaemic-stroke
#8
Rakesh Reddy C, Nandakishore Bompelli, Vikram Khardenavis, Anirudda Deshpande
We report a 54-year-old woman with scorpion bite. After 3 hours of admission, the patient developed sudden onset tachycardia with hypotension. Cardiac evaluation showed raised creatine kinase MB isoenzyme was elevated; ECG and two-dimensional echocardiography findings were suggestive of myocarditis. Subsequently, she developed transient ventricular tachycardia before developing abrupt onset, right hemiplegia, global aphasia and progressive worsening of sensorium 12 hours after the bite. MRI of brain revealed massive left middle cerebral artery (MCA) territory infarct...
October 11, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29025285/safety-and-efficacy-of-canagliflozin-in-elderly-patients-with-type-2-diabetes-mellitus-a-1-year-post-marketing-surveillance-in-japan
#9
Maki Goda, Tomoko Yamakura, Kazuyo Sasaki, Takumi Tajima, Makoto Ueno
Objective To evaluate the safety and efficacy of canagliflozin in elderly patients with type 2 diabetes mellitus (T2DM) in clinical settings. Methods We conducted a 1-year post-marketing surveillance (PMS) of canagliflozin in almost all the elderly patients (≥65 years old) with T2DM who began taking canagliflozin during the first 3 months after its launch in Japan. The main outcomes included the incidences of adverse drug reactions (ADRs), serious ADRs and the changes of laboratory tests as well as efficacy variables...
October 13, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/29022576/xueshuantong-injection-lyophilized-combined-with-salvianolate-lyophilized-injection-protects-against-focal-cerebral-ischemia-reperfusion-injury-in-rats-through-attenuation-of-oxidative-stress
#10
Fu-Jiang Wang, Shao-Xia Wang, Li-Juan Chai, Yue Zhang, Hong Guo, Li-Min Hu
Salvianolate lyophilized injection (SLI) and Xueshuantong injection (lyophilized) (XST) are two herbal standardized preparations that have been widely used in China for the treatment of acute cerebral infarction. In this study, we investigated the neuroprotective effects of SLI combined with XST in a rat model of middle cerebral artery occlusion-reperfusion (MCAO/R). Wistar rats were subjected to 1.5 h of MCAO followed by reperfusion for 3 h, then were treated with SLI or XST alone, or with their combinations via tail vein injection daily for 3 d...
October 12, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29021986/integrated-treatment-modality-of-cathodal-transcranial-direct-current-stimulation-with-peripheral-sensory-stimulation-affords-neuroprotection-in-a-rat-stroke-model
#11
Yu-Hang Liu, Su Jing Chan, Han-Chi Pan, Aishwarya Bandla, Nicolas K K King, Peter Tsun Hon Wong, You-Yin Chen, Wai Hoe Ng, Nitish V Thakor, Lun-De Liao
Cathodal-transcranial direct current stimulation induces therapeutic effects in animal ischemia models by preventing the expansion of ischemic injury during the hyperacute phase of ischemia. However, its efficacy is limited by an accompanying decrease in cerebral blood flow. On the other hand, peripheral sensory stimulation can increase blood flow to specific brain areas resulting in rescue of neurovascular functions from ischemic damage. Therefore, the two modalities appear to complement each other to form an integrated treatment modality...
October 2017: Neurophotonics
https://www.readbyqxmd.com/read/29019942/nadph-oxidase-related-pathophysiology-in-experimental-models-of-stroke
#12
REVIEW
Hiroshi Yao, Tetsuro Ago, Takanari Kitazono, Toru Nabika
Several experimental studies have indicated that nicotinamide adenine dinucleotide phosphate (NADPH) oxidases (Nox) exert detrimental effects on ischemic brain tissue; Nox-knockout mice generally exhibit resistance to damage due to experimental stroke following middle cerebral artery occlusion (MCAO). Furthermore, our previous MCAO study indicated that infarct size and blood-brain barrier breakdown are enhanced in mice with pericyte-specific overexpression of Nox4, relative to levels observed in controls. However, it remains unclear whether Nox affects the stroke outcome directly by increasing oxidative stress at the site of ischemia, or indirectly by modifying physiological variables such as blood pressure or cerebral blood flow (CBF)...
October 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29018538/replacement-of-warfarin-with-a-novel-oral-anticoagulant-in-endoscopic-mucosal-resection-a-multicentre-open-label-randomised-controlled-trial
#13
Takuya Yamada, Akiko Kada, Toshio Uraoka, Toshio Kuwai, Noriko Watanabe, Yoshihiro Sasaki, Katsuhiro Mabe, Yasuo Takahashi, Takashi Kagaya, Toshihisa Kimura, Hiroshige Hamada, Akiko M Saito, Naohiko Harada
INTRODUCTION: This randomised controlled trial aims to compare the efficacy of warfarin replacement with apixaban without postoperative resumption of heparin with that of conventional heparin bridging in patients taking warfarin and scheduled to undergo endoscopic mucosal resection (EMR): specifically, by checking for reduction in proportion of postoperative bleeding following EMR. METHODS AND ANALYSIS: The multicentre, open-label randomised parallel-group, controlled intervention study regards patients taking warfarin who are scheduled to undergo colon EMR...
2017: BMJ Open Gastroenterology
https://www.readbyqxmd.com/read/29018134/neuronal-sirt1-silent-information-regulator-2-homologue-1-regulates-glycolysis-and-mediates-resveratrol-induced-ischemic-tolerance
#14
Kevin B Koronowski, Nathalie Khoury, Isabel Saul, Zachary B Loris, Charles H Cohan, Holly M Stradecki-Cohan, Kunjan R Dave, Juan I Young, Miguel A Perez-Pinzon
BACKGROUND AND PURPOSE: Resveratrol, at least in part via SIRT1 (silent information regulator 2 homologue 1) activation, protects against cerebral ischemia when administered 2 days before injury. However, it remains unclear if SIRT1 activation must occur, and in which brain cell types, for the induction of neuroprotection. We hypothesized that neuronal SIRT1 is essential for resveratrol-induced ischemic tolerance and sought to characterize the metabolic pathways regulated by neuronal Sirt1 at the cellular level in the brain...
October 10, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29018130/mechanical-thrombectomy-in-perioperative-strokes-a-case-control-study
#15
Kévin Premat, Olivier Clovet, Giulia Frasca Polara, Eimad Shotar, Bruno Bartolini, Marion Yger, Federico Di Maria, Flore Baronnet, Silvia Pistocchi, Raphaël Le Bouc, Christine Pires, Nader Sourour, Sonia Alamowitch, Yves Samson, Vincent Degos, Frédéric Clarençon
BACKGROUND AND PURPOSE: Perioperative strokes (POS) are rare but serious complications for which mechanical thrombectomy could be beneficial. We aimed to compare the technical results and patients outcomes in a population of POS versus non-POS (nPOS) treated by mechanical thrombectomy. METHODS: From 2010 to 2017, 25 patients with POS (ie, acute ischemic stroke occurring during or within 30 days after a procedure) who underwent mechanical thrombectomy (POS group) were enrolled and paired with 50 consecutive patients with nPOS (control group), based on the occlusion's site, National Institute of Health Stroke Scale, and age...
October 10, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29018129/neuroimaging-correlates-of-cerebral-microbleeds-the-aric-study-atherosclerosis-risk-in-communities
#16
Jonathan Graff-Radford, Jeannette Simino, Kejal Kantarci, Thomas H Mosley, Michael E Griswold, B Gwen Windham, A Richey Sharrett, Marilyn S Albert, Rebecca F Gottesman, Clifford R Jack, Prashanthi Vemuri, David S Knopman
BACKGROUND AND PURPOSE: Cerebral microbleed (CMB) location (deep versus strictly lobar) may elucidate underlying pathology with deep CMBs being more associated with hypertensive vascular disease and lobar CMBs being more associated with cerebral amyloid angiopathy. The objective of this study was to determine whether neuroimaging signs of vascular disease and Alzheimer pathology are associated with different types of CMBs. METHODS: Among 1677 nondemented ARIC (Atherosclerosis Risk in Communities) participants (mean age=76±5 years; 40% men; 26% black) with 3-Tesla MRI scans at the fifth examination (2011-2013), we fit multinomial logistic regression models to quantify relationships of brain volumes (Alzheimer disease signature regions, total gray matter, frontal gray matter, and white matter hyperintensity volumes), infarct frequencies (lacunar, nonlacunar, and total), and apolipoprotein E(number of ε4 alleles) with CMB location (none, deep/mixed, or strictly lobar CMBs)...
October 10, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29017857/administration-of-5-methoxyindole-2-carboxylic-acid-that-potentially-targets-mitochondrial-dihydrolipoamide-dehydrogenase-confers-cerebral-preconditioning-against-ischemic-stroke-injury
#17
Jinzi Wu, Rongrong Li, Wenjun Li, Ming Ren, Nopporn Thangthaeng, Nathalie Sumien, Ran Liu, Shaohua Yang, James W Simpkins, Michael J Forster, Liang-Jun Yan
The objective of this study was to investigate a possible role of mitochondrial dihydrolipoamide dehydrogenase (DLDH) as a chemical preconditioning target for neuroprotection against ischemic injury. We used 5-methoxyindole-2-carboxylic acid (MICA), a reportedly reversible DLDH inhibitor, as the preconditioning agent and administered MICA to rats mainly via dietary intake. Upon completion of 4 week's MICA treatment, rats underwent 1h transient ischemia and 24h reperfusion followed by tissue collection. Our results show that MICA protected the brain against ischemic stroke injury as the infarction volume of the brain from the MICA-treated group was significantly smaller than that from the control group...
October 7, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29017677/artery-of-percheron-infarct-ararity-not-to-be-missed
#18
Farheen Niazi, Sameen Bin Naeem
Artery of Percheron (AOP) is a rare vascular variant of posterior cerebral circulation and it supplies blood to the bilateral paramedian thalami and the rostral midbrain. Artery of Percheron infarct requires a comprehensive clinical and radiological examination. It can be easily overlooked due to normal CTfindings and wide range of differential diagnosis. Classic triad of presentation is altered mental status, memory impairment and the vertical gaze palsy. We report a case of a 66-year female who had sudden onset of severe vertigo, diplopia and ataxia...
September 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/29017609/effects-of-intra-arterial-transplantation-of-adipose-derived-stem-cells-on-the-expression-of-netrin-1-and-its-receptor-dcc-in-the-peri-infarct-cortex-after-experimental-stroke
#19
Huan Huang, Fan Lin, Jingjing Jiang, Yan Chen, Ainong Mei, Pengli Zhu
BACKGROUND: Stem cell transplantation has been documented to promote functional recovery in animal models of stroke; however, the underlying mechanisms are not yet fully understood. As netrin-1 and its receptor deleted in colorectal cancer (DCC) are important regulators in neuronal and vascular activities, the present study attempted to explore whether netrin-1 and DCC are involved in the neuroprotection of stem cell-based therapies in a rat ischemic stroke model. METHODS: Adult male Sprague-Dawley rats were subjected to a transient middle cerebral artery occlusion (MCAO) and subsequently received an intra-arterial injection of 2 × 10(6) PKH26-labeled adipose-derived stem cells (ADSCs) or saline 24 h later...
October 10, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29017492/electroacupuncture-ameliorating-post-stroke-cognitive-impairments-via-inhibition-of-peri-infarct-astroglial-and-microglial-macrophage-p2-purinoceptors-mediated-neuroinflammation-and-hyperplasia
#20
Jia Huang, Xiaofang You, Weilin Liu, Changming Song, Xiaomin Lin, Xiufeng Zhang, Jing Tao, Lidian Chen
BACKGROUND: During ischemic stroke (IS), adenosine 5'-triphosphate (ATP) is released from damaged nerve cells of the infract core region to the extracellular space, invoking peri-infarct glial cellular P2 purinoceptors singling, and causing pro-inflammatory cytokine secretion, which is likely to initiate or aggravate motor and cognitive impairment. It has been proved that electroacupuncture (EA) is an effective and safe strategy used in anti-inflammation. However, EA for the role of purine receptors in the central nervous system has not yet been reported...
October 10, 2017: BMC Complementary and Alternative Medicine
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