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Vascular neurology

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https://www.readbyqxmd.com/read/29792953/protective-effect-of-s-nitrosoglutathione-administration-against-hyperglycemia-induced-disruption-of-blood-brain-barrier-is-mediated-by-alterations-in-tight-junction-proteins-and-cell-adhesion-molecules
#1
Aanchal Aggarwal, Inderjit Singh, Rajat Sandhir
Diabetes is associated with increased blood brain barrier (BBB) permeability resulting in neurological deficits. The present study investigated the role of S-nitrosoglutathione (GSNO) on tight junction proteins and cell adhesion molecules in streptozotocin-induced diabetic mice. Diabetes was induced by intraperitoneal injection of streptozotocin (40 mg/kg body weight) for 5 days in mice. GSNO was administered daily (100 μg/kg body weight, orally) for 8 weeks after the induction of diabetes. A significant decline was observed in the cognitive ability of diabetic animals assessed using radial arm maze test...
May 21, 2018: Neurochemistry International
https://www.readbyqxmd.com/read/29792727/added-value-of-including-entire-brain-on-body-imaging-with-fdg-pet-mri
#2
Ana M Franceschi, Robert Matthews, Lev Bangiyev, Nand Relan, Ammar Chaudhry, Dinko Franceschi
OBJECTIVE: FDG PET/MRI examination of the body is routinely performed from the skull base to the mid thigh. Many types of brain abnormalities potentially could be detected on PET/MRI if the head was included. The objective of this study was therefore to identify and characterize brain findings incidentally detected on PET/MRI of the body with the head included. MATERIALS AND METHODS: We retrospectively identified 269 patients with FDG PET/MRI whole-body scans that included the head...
May 24, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29790970/balloon-occlusion-testing-to-assess-retinal-collateral-and-predict-visual-outcomes-in-the-management-of-a-fusiform-intraorbital-ophthalmic-artery-aneurysm-technical-note-and-literature-review
#3
Mithun G Sattur, Matthew E Welz, Bernard R Bendok, Jeffrey W Miller
BACKGROUND AND IMPORTANCE: Aneurysms of the ophthalmic artery (OA) within the orbit and optic canal are extremely rare. Given the peripheral location of these aneurysms and the fact that most are fusiform, parent artery occlusion is preferred for symptomatic aneurysms. However, the impact of OA occlusion on vision is not always innocuous. Balloon occlusion testing (BOT) of the OA has the potential to gauge the possibility of visual compromise, in addition to assessing collaterals. While BOT has been assessed for carotid artery occlusion, its role in OA occlusion has not been well defined...
May 22, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29789966/beh%C3%A3-et-s-syndrome-and-nervous-system-involvement
#4
REVIEW
Uğur Uygunoğlu, Aksel Siva
PURPOSE OF REVIEW: Although Behçet's syndrome (BS) is classified as a rare disease in European countries and the USA, its neurologic involvement "neuro-Behçet's syndrome (NBS)" is commonly included in the differential diagnosis of many inflammatory and vascular central nervous system (CNS) disorders. Clinical and neuroimaging findings support two major forms of NBS: parenchymal NBS (p-NBS) and an extra-parenchymal form that presents with cerebral venous sinus thrombosis (CVST)...
May 23, 2018: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/29788139/microsurgical-resection-of-spinal-cord-hemangioblastoma-2-dimensional-operative-video
#5
Mirza Pojskic, Kenan I Arnautovic
This video demonstrates microsurgical resection of spinal cord hemangioblastoma. Hemangioblastomas are rare, benign, highly vascularized tumors classified as grade I according to World Health Organization classification systems. About 3% of all intramedullary tumors are hemangioblastomas.1,2 Spinal cord hemangioblastomas are either sporadic3,4 or manifestations of von Hippel-Lindau (VHL) disease in 20% to 45% of patients.5,6 A 30-year-old male presented with sudden onset urinary incontinence. Magnetic resonance imaging showed contrast enhancing intramedullary tumor with adjacent cyst in T11, and syringomyelia extending to C1...
May 18, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29788106/microsurgical-resection-of-a-solitary-spinal-epidural-cavernous-angioma-3-dimensional-operative-video
#6
Guilherme H W Ceccato, Lucélio Henning, Julyana L Prado, Marcio S Rassi, Luis A B Borba
Solitary spinal epidural cavernous angiomas are rare vascular malformations. Surgical excision is the treatment of choice, as these lesions tend to grow or bleed at some point. In this 3-dimensional, narrated video, we present the case of a 61-year-old male who presented with progressive pain in the right paravertebral region secondary to an epidural cavernous angioma located at the T6/T7 level. Under intraoperative neurophysiological monitoring, a laminectomy between T5 and T7 was performed. A reddish, well delimited, and highly vascularized epidural mass was identified and dissected from the adjacent dura and nerve root, and an en bloc total resection was achieved...
May 21, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29788103/post-ischaemic-administration-of-the-murine-canakinumab-surrogate-antibody-improves-outcome-in-experimental-stroke
#7
Luca Liberale, Candela Diaz-Cañestro, Nicole R Bonetti, Francesco Paneni, Alexander Akhmedov, Jürg H Beer, Fabrizio Montecucco, Thomas F Lüscher, Giovanni G Camici
Aims: The CANTOS trial underscored the efficacy of selective antibody-based interleukin (IL)-1β inhibition with Canakinumab in secondary prevention of cardiovascular events. Despite the success of the trial, incidence of stroke was not reduced likely due to the low number of events and the relatively young age of patients enrolled. Given the established role of IL-1β in stroke, we tested the efficacy of the murine Canakinumab-equivalent antibody in a mouse model of ischaemic stroke...
May 16, 2018: European Heart Journal
https://www.readbyqxmd.com/read/29784996/dual-function-injectable-angiogenic-biomaterial-for-the-repair-of-brain-tissue-following-stroke
#8
Lina R Nih, Shiva Gojgini, S Thomas Carmichael, Tatiana Segura
Stroke is the primary cause of disability due to the brain's limited ability to regenerate damaged tissue. After stroke, an increased inflammatory and immune response coupled with severely limited angiogenesis and neuronal growth results in a stroke cavity devoid of normal brain tissue. In the adult, therapeutic angiogenic materials have been used to repair ischaemic tissues through the formation of vascular networks. However, whether a therapeutic angiogenic material can regenerate brain tissue and promote neural repair is poorly understood...
May 21, 2018: Nature Materials
https://www.readbyqxmd.com/read/29781569/pediatric-superior-vena-cava-syndrome-an-evidence-based-systematic-review-of-the-literature
#9
REVIEW
Fadi Nossair, Peter Schoettler, Joanne Starr, Anthony K C Chan, Ivan Kirov, Bosco Paes, Arash Mahajerin
Superior vena cava syndrome (SVCS) results in vascular, respiratory, and neurologic compromise. A systematic search was conducted to determine the prevalence of pediatric SVCS subtypes and identify clinical characteristics/treatment strategies that may influence overall outcomes. Data from 101 case reports/case series (142 patients) were analyzed. Morbidity (30%), mortality (18%), and acute complications (55%) were assessed as outcomes. Thrombosis was present in 36%, with multi-modal anticoagulation showing improved outcome by >50% (P = 0...
May 21, 2018: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29781505/cerebral-vasculopathy-in-childhood-neurofibromatosis-type-2-cause-for-concern
#10
Karine Lascelles, Shazia Afridi, Ata Siddiqui, Cheryl Hemingway, Rosalie Ferner, Vijeya Ganesan
Unlike adult neurofibromatosis type 2 (NF2), which presents with symptoms related to bilateral vestibular schwannomas, children with NF2 most frequently present with ocular, dermatological, and neurological symptoms. Arteriopathy, a well-established feature in neurofibromatosis type 1, is not a widely recognized feature of NF2. Here we report three children with NF2 with cerebral arteriopathy and/or arterial ischaemic stroke. Bevacizumab, a vascular endothethial growth factor inhibitor, is an established treatment for rapidly growing vestibular schwannomas; however, it carries a risk of both ischaemic and haemorrhagic stroke...
May 21, 2018: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/29780794/pediatric-scurvy-when-contemporary-eating-habits-bring-back-the-past
#11
Alice Brambilla, Cristina Pizza, Donatella Lasagni, Lucia Lachina, Massimo Resti, Sandra Trapani
Vitamin C deficiency is anecdotal in developed countries, mainly associated with underling clinical morbidities as autism or neurological impairment. Chronic insufficient dietary supply is responsible for vascular fragility and impaired bone formation, resulting in gingival bleeding, petechial lesions, articular and bone pain or limb swelling. Children may present anorexia, irritability, failure to thrive, limping or refusal to walk. Accordingly, pediatric scurvy is frequently misdiagnosed with osteomyelitis, septic arthritis, bone and soft tissue tumor, leukemia, bleeding disorders, and rheumatologic conditions...
2018: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29780226/cerebral-border-zone-infarction-an-etiological-study
#12
Tarek Mohammed El-Gammal, Wafik Said Bahnasy, Osama Abd Allah Ragab, Ayman Mohammed Al-Malt
Background: Border zone infarcts (BZI) are ischemic lesions at the junction between two main arterial territories which may be either cortical or internal BZI. Methods: This study was conducted on 76 cerebral BZI patients and 20 healthy control subjects. Patients were divided to group I included 26 internal BZI, group II included 19 cortical BZI and group III included 21 mixed internal/cortical BZI patients. Included subjects were submitted to neurological examination, laboratory investigations, ECG, echocardiogram, brain CT and/or MRI and extra and intracranial blood vessels imaging by duplex and CT angiography...
2018: The Egyptian journal of neurology, psychiatry and neurosurgery
https://www.readbyqxmd.com/read/29779138/cognitive-syndromes-after-the-first-stroke
#13
Denisa Salihović, Dževdet Smajlović, Milija Mijajlović, Emina Zoletić, Omer Ć Ibrahimagić
AIM: The aim of this study is to determine impairments of certain cognitive functions in certain vascular cognitive syndromes and to identify predictors of dementia. PATIENTS AND METHODS: One-year prospective study included 275 patients, who were hospitalized at the Department of Neurology Tuzla and therefore fulfilled certain criteria. Patients were divided into following subgroups of vascular cognitive impairment (VCI): dementia of strategic infarct (DSI), cortical dementia (CD), sub cortical dementia (SCD), hemorrhagic dementia (HD), and patients without dementia...
May 19, 2018: Neurological Sciences
https://www.readbyqxmd.com/read/29778598/relevance-of-antiplatelet-therapy-duration-after-stent-assisted-coil-embolization-for-unruptured-intracranial-aneurysms
#14
Tackeun Kim, Chang Hyeun Kim, Si-Hyuck Kang, Seung Pil Ban, O-Ki Kwon
BACKGROUND: The optimal duration of dual antiplatelet therapy (DAPT) for preventing delayed thromboembolic events (DTEs) remains unclear. We aimed to determine whether longer DAPT provides improved protection against delayed DTEs. METHODS: This retrospective cohort study included 507 stent-assisted coil embolization procedures using a single stent for unruptured intracranial aneurysms. We performed coarsened exact matching according to the duration of maintenance DAPT...
May 17, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29777902/chemical-characterization-and-cerebroprotective-effect-of-methanolic-root-extract-of-colebrookea-oppositifolia-in-rats
#15
Gollapalle Lakshminarayanashastry Viswanatha, Marikunte V Venkataranganna, Nunna Bheema Lingeswara Prasad, Shylaja Hanumanthappa
ETHNOPHARMACOLOGICAL RELEVANCE: Colebrookea oppositifolia Smith is one of the extensively used plants to treat neurological conditions such as epilepsy by the various ethnic communities in sub-Himalayan regions of India such as Bhoxa, Tharu and nomadic Gujjars. AIM OF THE STUDY: This study was conducted to evaluate the cerebroprotective effect of C. oppositifolia methanolic root (MeCO) extract in Wistar rats. MATERIALS AND METHODS: The MeCO was characterized for total phenolic content and later subjected for detailed liquid chromatography-mass spectrometry analysis...
May 16, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29777884/neurosurgical-management-of-self-inflicted-cranial-crossbow-injury
#16
Charles G Kulwin, Andrew DeNardo, Saad Khairi, Troy Payner
BACKGROUND: While gun-related penetrating traumatic brain injuries make up the majority of cranial missile injuries, low-velocity penetrating injuries present significant clinical difficulties that cannot necessarily be identically managed. Bow hunting is an increasingly popular pastime, and a crossbow allows a unique mechanism to cause a self-inflicted cranial injury with a large, low-velocity projectile. Historically, arrow removal is described in an operating room setting, which provides limited knowledge of the location of vascular injury in the setting of post-removal hemorrhage, and may represent an inefficient use of operating room availability...
May 16, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29774769/serum-mediated-activation-of-bone-marrow-derived-mesenchymal-stem-cells-in-ischemic-stroke-patients-a-novel-preconditioning-method
#17
Gyeong Joon Moon, Yeon Hee Cho, Dong Hee Kim, Ji Hee Sung, Jeong Pyo Son, Sooyoon Kim, Jae Min Cha, Oh Young Bang
Stroke induces complex and dynamic, local and systemic changes including inflammatory reactions, immune responses, and repair and recovery processes. Mesenchymal stem cells (MSCs) have been shown to enhance neurological recovery after stroke. We hypothesized that serum factors play a critical role in the activation of bone marrow (BM) MSCs after stroke such as by increasing proliferation, paracrine effects, and rejuvenation. Human MSCs (hMSCs) were grown in fetal bovine serum (FBS), normal healthy control serum (NS), or stroke patient serum (SS)...
January 1, 2018: Cell Transplantation
https://www.readbyqxmd.com/read/29774557/diabetes-induced-microvascular-complications-at-the-level-of-the-spinal-cord-a-contributing-factor-in-diabetic-neuropathic-pain
#18
N Ved, M E Da Vitoria Lobo, S M Bestall, C L Vidueira, N Beazley-Long, K Ballmer-Hofer, M Hirashima, D O Bates, L F Donaldson, R P Hulse
Abnormalities of neurovascular interactions within the central nervous system of diabetic patients is associated with the onset of many neurological disease states. However, to date, the link between the neurovascular network within the spinal cord and regulation of nociception has not been investigated despite neuropathic pain being common in diabetes. We hypothesised that hyperglycaemia-induced endothelial degeneration in the spinal cord, due to suppression of VEGF-A/VEGFR2 signalling, induces diabetic neuropathic pain...
May 17, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29771445/tirofiban-combined-with-rt-pa-intraarterial-thrombolysis-improves-the-recanalization-rate-of-acute-middle-cerebral-artery-occlusion-in-rabbits
#19
Y-J Yu, W Xiong
OBJECTIVE: To investigate the curative effect of tirofiban combined with recombinant tissue-plasminogen activator (rt-PA) selective intra-arterial thrombolysis on acute middle cerebral artery occlusion (MCAO). MATERIALS AND METHODS: A total of 60 adult male Japanese white rabbits weighing 2.5-3.0 kg were selected, and the acute cerebral infarction model was established via autologous thromboembolism of middle cerebral artery. Rabbits were randomly divided into 4 groups: tirofiban group (Ti group, 5 μg/kg, n=15), rt-PA group (rt-PA group, 2 mg/kg, n=15), tirofiban + rt-PA group (Ti + rt-PA group, 3 μg/kg Ti + 1 mg/kg rt-PA, n=15), and control group (Co group, n=15)...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29770267/role-of-noninvasive-imaging-of-cerebral-arterial-system-in-ischemic-stroke-comparison-of-transcranial-color-coded-doppler-sonography-with-magnetic-resonance-angiography
#20
Betty Simon, Sunithi Elizabeth Mani, Shyamkumar Nidugala Keshava, Mathew Alexander, Sanjith Aaron
Aim: To determine the accuracy of transcranial color-coded Doppler sonography (TCCS) in the evaluation of cerebral arterial system in patients with ischemic stroke attending a tertiary care hospital in South India. Objectives: (1) To describe the topographical distribution of atherosclerotic lesions in the cerebral circulation in patients presenting with ischemic stroke from the Indian subcontinent and (2) to determine the accuracy of TCCS for detection and quantification of intracranial stenoses in various segments of the intracerebral arterial system in comparison with magnetic resonance angiography (MRA)...
2018: Journal of Clinical Imaging Science
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