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https://www.readbyqxmd.com/read/28330015/contact-aspiration-versus-stent-retriever-front-line-for-recanalisation-in-acute-cerebral-infarction-the-aster-trial
#1
Bertrand Lapergue, Julien Labreuche, Michel Piotin
RATIONALE: Mechanical thrombectomy (MT) with a stent retriever (SR), in association with intravenous (IV) rtPA, is now the standard of care in anterior circulation ischemic stroke caused by large vessel occlusion (LVO). Favorable outcome is strongly associated with the successful reperfusion status. New techniques for MT such as contact aspiration (CA) seem promising to increase reperfusion status and clinical outcome in retrospective studies. We aim at ascertaining whether CA is more efficient than stent retriever as a front-line endovascular procedure...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28328002/endovascular-treatment-of-middle-cerebral-artery-m2-occlusion-strokes-clinical-and-procedural-predictors-of-outcomes
#2
Maxim Mokin, Christopher T Primiani, Zeguang Ren, Peter Kan, Edward Duckworth, Raymond D Turner, Aquilla S Turk, Kyle M Fargen, Guilherme Dabus, Italo Linfante, Travis M Dumont, Leonardo B C Brasiliense, Hussain Shallwani, Kenneth V Snyder, Adnan H Siddiqui, Elad I Levy
BACKGROUND: Patients with strokes from M2 segment middle cerebral artery (MCA) occlusion have been underrepresented in recent randomized trials of endovascular therapy. OBJECTIVE: To better understand the clinical, imaging, and procedural predictors of successful recanalization and clinical outcomes in this population of patients. METHODS: We performed a multicenter retrospective analysis of consecutive patients with acute MCA M2 segment occlusion who underwent thrombectomy with stent retrievers or primary aspiration thrombectomy (including A Direct Aspiration First Pass Technique approach)...
March 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28327963/treatment-of-intracranial-aneurysms-with-the-silk-embolization-device-in-a-multicenter-study-a-retrospective-data-analysis
#3
José Manuel Pumar, Alexandra Banguero, Hugo Cuellar, Leopoldo Guimaraens, Javier Masso, Salvador Miralbes, Miguel Blanco-Ulla, Fernando Vazquez-Herrero, Miguel Souto, Miguel Gelabert-Gonzalez
BACKGROUND: Flow-diverter technology has become an important stent-based embolization tool in the treatment of complex cerebrovascular pathology. We report here the experience of 4 Spanish centers with using the SILK flow-diverter (SFD) device. OBJECTIVE: To evaluate the safety and efficacy of using the SFD in the endovascular treatment of intracranial aneurysms with complex morphology. METHODS: We retrospectively examined a prospectively maintained database of patients treated with SFD devices between July 2008 and December 2013 at 1 of 4 institutions in Spain...
January 28, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28327940/the-nationwide-burden-of-neurological-conditions-requiring-emergency-neurosurgery
#4
Rafael De la Garza Ramos, C Rory Goodwin, Jonathan Nakhla, Rani Nasser, Reza Yassari, Eugene S Flamm, Ali Bydon, Geoffrey Colby, Daniel M Sciubba
BACKGROUND: Neurosurgical emergencies are an important cause of disability and mortality. OBJECTIVE: To examine the nationwide burden of neurological conditions requiring emergency neurosurgery. METHODS: The Nationwide Inpatient Sample database (2002-2011) was queried to identify adult patients with a primary discharge diagnosis of a neurosurgical condition who were admitted urgently/emergently or through a trauma center and underwent surgical intervention within 2 days of admission...
March 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28323841/detection-of-crossed-cerebellar-diaschisis-in-hyperacute-ischemic-stroke-using-arterial-spin-labeled-mr-imaging
#5
Koung Mi Kang, Chul-Ho Sohn, Seung Hong Choi, Keun-Hwa Jung, Roh-Eul Yoo, Tae Jin Yun, Ji-Hoon Kim, Sun-Won Park
BACKGROUND AND PURPOSE: Arterial spin-labeling (ASL) was recently introduced as a noninvasive method to evaluate cerebral hemodynamics. The purposes of this study were to assess the ability of ASL imaging to detect crossed cerebellar diaschisis (CCD) in patients with their first unilateral supratentorial hyperacute stroke and to identify imaging or clinical factors significantly associated with CCD. MATERIALS AND METHODS: We reviewed 204 consecutive patients who underwent MRI less than 8 hours after the onset of stroke symptoms...
2017: PloS One
https://www.readbyqxmd.com/read/28323188/tailored-double-barrel-bypass-surgery-using-an-occipital-artery-graft-for-unstable-intracranial-vascular-occlusive-disease-a-case-report
#6
Yeongu Chung, Sung Ho Lee, Jiwook Ryu, Johnho Kim, Sang Bong Chung, Seok Keun Choi
No abstract text is available yet for this article.
March 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28323181/perioperative-changes-in-cerebral-perfusion-territories-assessed-by-arterial-spin-labeling-magnetic-resonance-imaging-are-associated-with-postoperative-increases-in-cerebral-blood-flow-in-patients-with-carotid-stenosis
#7
Daisuke Yamamoto, Kohkichi Hosoda, Yoshito Uchihashi, Atsushi Fujita, Takashi Sasayama, Masahiko Fujii, Kazuro Sugimura, Masaaki Kohta, Eiji Kohmura
OBJECTIVE: MRI technique known as Territorial ASL (TASL) allows for noninvasive visualization of their perfusion territories. The objective of this study was to use TASL to assess the relationship between perioperative changes in the perfusion territories of ICA and CBF after carotid revascularization. METHODS: In 32 patients, ICA perfusion volume (PV) and CBF were measured before and after CEA/CAS using TASL and SPECT, respectively. ICA flow was measured during CEA before and after reconstruction, using an electromagnetic flowmeter...
March 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28322975/a-polymeric-micelle-magnetic-resonance-imaging-mri-contrast-agent-reveals-blood-brain-barrier-bbb-permeability-for-macromolecules-in-cerebral-ischemia-reperfusion-injury
#8
Kouichi Shiraishi, Zuojun Wang, Daisuke Kokuryo, Ichio Aoki, Masayuki Yokoyama
Blood-brain barrier (BBB) opening is a key phenomenon for understanding ischemia-reperfusion injuries that are directly linked to hemorrhagic transformation. The recombinant human tissue-type plasminogen activator (rtPA) increases the risk of symptomatic intracranial hemorrhages. Recent imaging technologies have advanced our understanding of pathological BBB disorders; however, an ongoing challenge in the pre-"rtPA treatment" stage is the task of developing a rigorous method for hemorrhage-risk assessments...
March 16, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28321460/complication-risk-factors-in-anterior-choroidal-artery-aneurysm-treatment
#9
Arthur André, Anne-Laure Boch, Federico Di Maria, Aurélien Nouet, Nader Sourour, Stéphane Clémenceau, Joseph Gabrieli, Vincent Degos, Chiheb Zeghal, Jacques Chiras, Philippe Cornu, Frédéric Clarençon
OBJECT: The anterior choroidal artery (AChoA) is a rare location for intracranial aneurysms. The treatment of these aneurysms may be challenging due to the risk of occlusion of such a small and eloquent artery as the AChoA. We aimed to evaluate the risk factors for complications in AChoA aneurysm treatment. METHODS: We retrospectively analyzed 47 consecutive AChoA aneurysms in 40 patients treated in our institution from 1999 and 2014 by endovascular means (87%) or surgical clipping (13%)...
March 20, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28320941/potent-neuroprotection-after-stroke-afforded-by-a-double-knot-spider-venom-peptide-that-inhibits-acid-sensing-ion-channel-1a
#10
Irène R Chassagnon, Claudia A McCarthy, Yanni K-Y Chin, Sandy S Pineda, Angelo Keramidas, Mehdi Mobli, Vi Pham, T Michael De Silva, Joseph W Lynch, Robert E Widdop, Lachlan D Rash, Glenn F King
Stroke is the second-leading cause of death worldwide, yet there are no drugs available to protect the brain from stroke-induced neuronal injury. Acid-sensing ion channel 1a (ASIC1a) is the primary acid sensor in mammalian brain and a key mediator of acidosis-induced neuronal damage following cerebral ischemia. Genetic ablation and selective pharmacologic inhibition of ASIC1a reduces neuronal death following ischemic stroke in rodents. Here, we demonstrate that Hi1a, a disulfide-rich spider venom peptide, is highly neuroprotective in a focal model of ischemic stroke...
March 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28320162/rnf213-rs112735431-polymorphism-in-intracranial-artery-steno-occlusive-disease-and-moyamoya-disease-in-koreans
#11
Min-Gyu Park, Jin-Hong Shin, Sang Weon Lee, Hae Rim Park, Kyung-Pil Park
BACKGROUND: The rs112735431 polymorphism of the RNF213, a susceptibility variant for moyamoya disease (MMD), may be associated with non-MMD intracranial artery steno-occlusive disease of non-MMD type (non-MMD ICAD) in Asian. We investigated whether the rs112735431 polymorphism of the RNF213 affect the development of non-MMD ICAD in Koreans compared to MMD and control group. METHODS: We included 31 patients with non-MMD ICAD, 25 patients with MMD, and 100 participants as control group...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28320101/effect-of-melilotus-officinalis-extract-on-the-apoptosis-of-brain-tissues-by-altering-cerebral-thrombosis-and-inflammatory-mediators-in-acute-cerebral-ischemia
#12
Gui-Cun Zhao, Yan-Ling Yuan, Feng-Rong Chai, Fa-Jing Ji
Present investigation evaluates the protective effect of Melilotus officinalis (MO) extract on the brain tissues in acute cerebral ischemia. Acute cerebral ischemia was induced by occlusion of carotid artery and rats with cerebral ischemia were treated with MO (100, 250 & 500mg/kg) for the duration of three days. Cerebral ischemia was confirmed by estimating infract volume and neurological deficit score. Moreover biochemical parameters in plasma such as 6-keto-PGF1α and TXB2 and concentration of cytokine, oxidative stress, apoptosis ratio and protein expressions of Bcl2 & Bax were estimated in the brain tissues...
March 17, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28320085/down-regulation-of-microrna-142-5p-attenuates-oxygen-glucose-deprivation-and-reoxygenation-induced-neuron-injury-through-up-regulating-nrf2-are-signaling-pathway
#13
Ning Wang, Lingmin Zhang, Yang Lu, Mingxin Zhang, Zhenni Zhang, Kui Wang, Jianrui Lv
MicroRNAs (miRNAs) play vital roles in regulating neuron survival during cerebral ischemia/reperfusion injury. miR-142-5p is reported to be an important regulator of cellular survival. However, little is known about the role of miR-142-5p in regulating neuron survival during cerebral ischemia/reperfusion injury. In this study, we aimed to investigate the precise function and mechanism of miR-142-5p in the regulation of neuron ischemia/reperfusion injury using a cellular model of oxygen-glucose deprivation and reoxygenation (OGD/R)-induced injury in hippocampal neurons in vitro...
March 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28319953/dual-versus-single-energy-ct-angiography-imaging-for-patients-undergoing-intracranial-aneurysm-repair
#14
Amr Abdulazim, Christian Rubbert, Dorothea Reichelt, Christian Mathys, Bernd Turowski, Hans-Jakob Steiger, Daniel Hänggi, Nima Etminan
BACKGROUND: The invasiveness and risk of thromboembolic complications of catheter angiography underline the need for alternative imaging modalities in patients following intracranial aneurysm (IA) repair. However, the overall image quality of existing noninvasive imaging modalities, such as single-energy CT angiography (SE-CTA), compromises its value in this respect. OBJECTIVE: We prospectively investigated the value of a novel dual-energy CTA (DE-CTA) scanner and algorithm for assessing the degree of occlusion and parent vessel patency in patients following IA repair...
March 21, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28319471/early-secondary-prevention-after-initially-ineffective-revascularization-treatments-for-acute-ischemic-stroke-due-to-tandem-occlusion
#15
Stefano Forlivesi, Elia Pancheri, Giuseppe Moretto, Paolo Bovi, Manuel Cappellari
The most effective treatment of patients with stroke due to tandem occlusion is still unclear. We report the case of a man with stroke due to tandem internal carotid artery/middle cerebral artery occlusion, who underwent initially ineffective intravenous thrombolysis (IVT) and endovascular treatment. Early anticoagulation with apixaban was started after 48 h of IVT, given a newly diagnosed nonvalvular atrial fibrillation. Spontaneous partial recanalization of the cervical internal carotid artery was noted, and carotid endarterectomy was performed 72 h after IVT and 8 h after the last dose of apixaban...
March 17, 2017: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/28319315/maxillofacial-features-and-systemic-malformations-in-expanded-spectrum-hemifacial-microsomia
#16
Noah Cohen, Erica Cohen, Alberto Gaiero, Silvia Zecca, Graziella Fichera, Federica Baldi, Joseph Felix Giordanetto, Jacques Marie Mercier, Amnon Cohen
Hemifacial microsomia (HFM) is a rare, multisystemic congenital disease with estimated frequency of 1/26370 births in Europe. Most cases are sporadic and caused by unilateral abnormal morphogenesis of the first and second pharyngeal arches. The aim of this study is to define the types and frequency of maxillofacial and systemic malformations in HFM patients. This is a case series study of patients with HFM evaluated at a single institution. Data were acquired through history, physical examination, photographs, diagnostic radiology, and laboratory and analyzed by the FileMakerPro database on 95 patients (54F; 41M) of which 89 met the inclusion criteria...
March 20, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28319240/two-paradigms-for-endovascular-thrombectomy-after-intravenous-thrombolysis-for-acute-ischemic-stroke
#17
Gaspard Gerschenfeld, Ioan-Paul Muresan, Raphael Blanc, Michael Obadia, Marie Abrivard, Michel Piotin, Sonia Alamowitch
Importance: Intravenous thrombolysis (IVT) followed by mechanical thrombectomy (MT) is recommended to treat acute ischemic stroke (AIS) with a large vessel occlusion (LVO). Most hospitals do not have on-site MT facilities, and most patients need to be transferred secondarily after IVT (drip and ship), which may have an effect on the neurologic outcome. Objective: To compare the functional independence at 3 months between patients treated under the drip-and-ship paradigm and those treated on site (mothership)...
March 20, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28319156/differential-impact-of-serum-total-bilirubin-level-on-cerebral-atherosclerosis-and-cerebral-small-vessel-disease
#18
Jonguk Kim, Seung-Jae Yoon, Min-Hee Woo, Sang-Heum Kim, Nam-Keun Kim, Jinkwon Kim, Ok-Joon Kim, Seung-Hun Oh
BACKGROUND: A low serum total bilirubin (T-bil) level is associated with an increased risk of atherosclerosis. However, the differential impact of the serum T-bil level on cerebral atherosclerosis and cerebral small vessel disease (SVD) is still unclear. METHODS: We evaluated serum T-bil levels from 1,128 neurologically healthy subjects. Indices of cerebral atherosclerosis (extracranial arterial stenosis [ECAS] and intracranial arterial stenosis [ICAS]), and indices of SVD (silent lacunar infarct [SLI], and moderate-to-severe white matter hyperintensities [msWMH]) were evaluated by the use of brain magnetic resonance imaging (MRI) and MR angiography...
2017: PloS One
https://www.readbyqxmd.com/read/28318956/carotid-endarterectomy-to-remove-retained-solitaire-stent-retriever-inside-carotid-stent-after-mechanical-thrombectomy
#19
Mary In-Ping Huang Cobb, Tony P Smith, Patrick A Brown, L Fernando Gonzalez, Ali R Zomorodi
BACKGROUND: Tandem occlusions of the internal carotid artery (ICA) and middle cerebral artery (MCA) occur in up to a third of patients with acute ischemic strokes undergoing endovascular mechanical thrombectomy. Understanding open neurosurgical management of associated complications with this procedure is important. CASE REPORT: A 67-year-old man with acute onset of left hemiparesis and a tandem right ICA and MCA occlusion. He underwent carotid stent angioplasty of a stenotic ICA, followed by attempted Solitaire stent retrieval of an MCA clot...
March 16, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28318953/mechanical-thrombectomy-in-wake-up-strokes-a-case-series-using-alberta-stroke-program-early-ct-score-aspects-for-patient-selection
#20
Angelos Aristeidis Konstas, Artin Minaeian, Ian B Ross
BACKGROUND: There is lack of published studies on mechanical thrombectomy with stent retrievers for wake-up stroke (WUS). OBJECTIVE: To report the outcomes of WUS patients with large vessel occlusions, selected for intervention based on Alberta Stroke Program Early CT Score (ASPECTS) and treated with stent retrievers or primary aspiration thrombectomy. METHODS: Data were collected retrospectively for each consecutive WUS patient undergoing mechanical thrombectomy with a stent retriever or primary aspiration catheter between February 2015 and September 2016...
March 15, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
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