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https://www.readbyqxmd.com/read/29792090/procedural-and-clinical-outcomes-of-endovascular-recanalization-therapy-in-patients-with-cancer-related-stroke
#1
Seunguk Jung, Cheolkyu Jung, Jae Hyoung Kim, Byung Se Choi, Yun Jung Bae, Leonard Sunwoo, Ho Geol Woo, Jun Young Chang, Beom Joon Kim, Moon-Ku Han, Hee-Joon Bae
Objective Embolism due to coagulopathy might be the main pathomechanism underlying cancer-related stroke (CRS). CRS patients with a large artery occlusion could be candidates for endovascular recanalization therapy (ERT), although its procedural and clinical outcomes are not well known. This study aimed to investigate the procedural and clinical outcomes of ERT in CRS patients and the characteristics associated with outcomes compared with those of conventional stroke patients. Methods A registry of consecutive acute ischemic stroke patients who underwent ERT between January 2011 and October 2015 was retrospectively reviewed...
January 1, 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29791585/protective-effect-and-mechanism-of-lactobacillus-on-cerebral-ischemia-reperfusion-injury-in-rats
#2
Shi Wanchao, Ma Chen, Su Zhiguo, Xie Futang, Shi Mengmeng
The present study was designed to investigate the protective effects and mechanism of inactivated lactobacillus (ILA) on cerebral ischemia reperfusion injury (CIRI) in rats. In this experiment, 30 male Sprague Dawley rats were randomly divided into control group, IRI groups, and ILA group. A middle cerebral artery occlusion and reperfusion model was prepared. The rats were killed after 24 hours of recovery of blood flow of cerebral ischemia resulting from 60-min occlusion. The cerebral infarction volume and neurological scores were assayed by staining and behavioral observation...
2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/29790969/microcatheter-first-pass-effect-predicts-acute-intracranial-artery-atherosclerotic-disease-related-occlusion
#3
Ting-Yu Yi, Wen-Huo Chen, Yan-Min Wu, Mei-Fang Zhang, A-Lai Zhan, Yue-Hong Chen, Zong-Zhong Wu, Yan-Chuan Shi, Bai-Ling Chen
BACKGROUND: The differentiation between intracranial atherosclerotic stenosis (ICAS) and intracranial embolism as the immediate cause of acute ischemic stroke requiring endovascular therapy is important but challenging. In cases of ICAS, we often observe a phenomenon we call the microcatheter "first-pass effect," which is temporary blood flow through the occluded intracranial artery when the angiographic microcatheter is initially advanced through the site of total occlusion and immediately retrieved proximally...
May 22, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29790066/treatment-and-outcome-of-thrombosed-aneurysms-of-the-middle-cerebral-artery-institutional-experience-and-a-systematic-review
#4
REVIEW
Alba Scerrati, Giovanni Sabatino, Giuseppe Maria Della Pepa, Alessio Albanese, Enrico Marchese, Alfredo Puca, Alessandro Olivi, Carmelo Lucio Sturiale
Thrombosed aneurysms of the middle cerebral artery (MCA) usually show large dimension and complex morphology with neck sclerosis and perforating vessels originating from the sac. Only limited experiences from case reports or small mixed series including thrombosed aneurysms in different locations are available in literature. To systematically review all the pertinent literature, a comprehensive literature review with the search terms "MCA, aneurysm, and thrombosis" and a pooled analysis including our institutional series were performed...
May 22, 2018: Neurosurgical Review
https://www.readbyqxmd.com/read/29789895/diffusion-weighted-imaging-determinants-for-acute-ischemic-stroke-diagnosis-in-the-emergency-room
#5
Alejandro M Brunser, Gabriel Cavada, Paula Muñoz Venturelli, Verónica Olavarría, Alexis Rojo, Juan Almeida, Violeta Díaz, Arnold Hoppe, Pablo Lavados
PURPOSE: The aim of this study was to investigate the clinical-radiological determinants of diffusion-weighted image (DWI) abnormalities in patients with suspected acute ischemic stroke (AIS) seen at the emergency room (ER). METHODS: During the study period, 882 consecutive patients were screened at Clínica Alemana de Santiago, Chile; 786 had AIS and 711 (90.4%) were included. RESULTS: DWI demonstrated 87.3% sensitivity and 99.0% specificity, with a positive likelihood ratio of 79 and a negative likelihood ratio of 0...
May 22, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29789872/endovascular-thrombectomy-for-large-vessel-occlusion-strokes-with-preexisting-intracranial-aneurysms
#6
Tengfei Zhou, Tianxiao Li, Liangfu Zhu, Ziliang Wang, Weixing Bai, Jiangyu Xue, Guang Feng
OBJECTIVE: This study aimed to investigate the safety of endovascular thrombectomy in acute ischemic stroke with preexisting intracranial aneurysms. METHODS: Patients with acute ischemic stroke due to large-artery occlusion combined with intracranial aneurysms, who received endovascular treatment, were analyzed retrospectively, and the procedure-related data were recorded. RESULTS: Among the 124 patients who suffered acute large-artery occlusion and received endovascular recanalization therapy, intracranial aneurysms were found in seven patients (5...
May 22, 2018: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/29789214/emergent-carotid-endarterectomy-versus-stenting-in-acute-stroke-patients-with-tandem-occlusion
#7
Diana E Slawski, Mouhammad A Jumaa, Hisham Salahuddin, Julie Shawver, M Junaid Humayun, Todd Russell, Andrew Seiwert, David Paolini, Jihad Abbas, Munier Nazzal, Gretchen E Tietjen, Aixa Espinosa-Morales, Andrea Korsnack, Syed F Zaidi
OBJECTIVE: Acute stroke due to tandem cervical internal carotid artery (ICA) and intracranial large-vessel occlusion (ILVO) has a high rate of morbidity and mortality. The most appropriate treatment strategy for the extracranial culprit lesion remains unclear. In this study, we report our institutional outcomes with two approaches: emergent carotid endarterectomy (CEA) and carotid artery stenting (CAS). METHODS: Patients with tandem ICA-ILVO were identified in a prospective mechanical thrombectomy (MT) database between July 2012 and April 2016...
May 19, 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29788103/post-ischaemic-administration-of-the-murine-canakinumab-surrogate-antibody-improves-outcome-in-experimental-stroke
#8
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/29787857/high-fructose-diet-during-adolescent-development-increases-neuroinflammation-and-depressive-like-behavior-without-exacerbating-outcomes-after-stroke
#9
C S Harrell, C Zainaldin, D McFarlane, M M Hyer, D Stein, I Sayeed, G N Neigh
Diseases, disorders, and insults of aging are frequently studied in otherwise healthy animal models despite rampant co-morbidities and exposures among the human population. Stressor exposures can increase neuroinflammation and augment the inflammatory response following a challenge. The impact of dietary exposure on baseline neural function and behavior has gained attention; in particular, a diet high in fructose can increase activation of the hypothalamic-pituitary-adrenal axis and alter behavior. The current study considers the implications of a diet high in fructose for neuroinflammation and outcomes following the cerebrovascular challenge of stroke...
May 19, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29787393/recanalization-of-chronic-occlusion-of-the-middle-cerebral-artery-with-tissue-plasminogen-activator-treatment-a-case-report
#10
Seung Jae Lee, Jin Sung Cheong, Han Uk Ryu, Hyun Goo Kang
OBJECTIVES: Patients with chronic proximal middle cerebral artery (MCA) occlusion do not present with severe symptoms, but early recanalization of acute occlusion is associated with high morbidity and mortality. Tissue plasminogen activator (tPA) is a recombinant thrombolytic agent approved for treating ischemic stroke, although only a few cases of tPA administration in chronic MCA occlusion have yielded positive results. METHODS: A 71-year-old patient had a history of right MCA territorial infarction with the occlusion occurring 12 years ago (November 2005)...
May 21, 2018: Clinical Neuropharmacology
https://www.readbyqxmd.com/read/29785667/cerebral-autoregulation-in-stroke
#11
REVIEW
Pedro Castro, Elsa Azevedo, Farzaneh Sorond
PURPOSE OF REVIEW: Cerebral autoregulation (CA) is a mechanism that maintains cerebral blood flow constant despite fluctuations in systemic arterial blood pressure. This review will focus on recent studies that measured CA non-invasively in acute cerebrovascular events, a feature unique to the transcranial Doppler ultrasound. We will summarize the rationale for CA assessment in acute cerebrovascular disorders and specifically evaluate the existing data on the value of CA measures in relation to clinical severity, guiding management decisions, and prognostication...
May 21, 2018: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/29785469/early-detection-of-cerebral-infarction-after-focal-ischemia-using-a-new-mri-indicator
#12
Yukako Nakajo, Qiang Zhao, Jun-Ichiro Enmi, Hidehiro Iida, Jun C Takahashi, Hiroharu Kataoka, Keiko Yamato, Hiroji Yanamoto
Prolongation of the T2 relaxation time, an increase in T2-weighted signal intensity (T2-SI), and a decrease in the apparent diffusion coefficient (ADC) calculated from diffusion-weighted images (DWI) on magnetic resonance imaging (MRI) are conventional indicators of the vasogenic (interstitial) or cytotoxic (cellular) cerebral edema that develops after ischemic stroke. However, these parameters obtained on stroke imaging have not given us a precise threshold at which we can determine the viability or vulnerability of the tissue, allowing us to decide on an intervention that will help reversible tissue in the acute phase...
May 21, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29785312/a-case-of-progressive-stroke-on-posterior-circulation-with-transient-bilateral-oculomotor-palsy
#13
Chiaki Takahashi
Infarction located in the midbrain and pons presents various ophthalmic symptoms, because of the damage of the nuclei that control the movement of internal and external ocular and palpebral muscles. We experienced a case which presented with rare ocular symptoms and course. A 61-year-old man presented with left hemiparesis and dysarthria, bilateral ptosis, and bilateral impaired eyeball movement: right eyeball movement was totally impaired and left could only perform slight adduction. MRI showed fresh stroke in the right thalamus, cerebral crus, and posterior lobe and cuneate lesion on bilateral paramedian portion of the midbrain...
2018: Case Reports in Neurological Medicine
https://www.readbyqxmd.com/read/29785226/progressive-assessment-of-ischemic-injury-to-white-matter-using-diffusion-tensor-imaging-a-preliminary-study-of-a-macaque-model-of-stroke
#14
Xiaodong Zhang, Yumei Yan, Frank Tong, Chun-Xia Li, Benjamin Jones, Silun Wang, Yuguang Meng, E Chris Muly, Doty Kempf, Leonard Howell
Background: Previous Diffusion Tensor Imaging (DTI) studies have demonstrated the temporal evolution of stroke injury in grey matter and white matter can be characterized by DTI indices. However, it still remains not fully understood how the DTI indices of white matter are altered progressively during the hyperacute (first 6 hours) and acute stage of stroke (≤ 1 week). In the present study, DTI was employed to characterize the temporal evolution of infarction and white matter injury after stroke insult using a macaque model with permanent ischemic occlusion...
2018: Open Neuroimaging Journal
https://www.readbyqxmd.com/read/29784938/characterization-of-the-rat-cerebrospinal-fluid-proteome-following-acute-cerebral-ischemia-using-an-aptamer-based-proteomic-technology
#15
Alba Simats, Teresa García-Berrocoso, Laura Ramiro, Dolors Giralt, Natalia Gill, Anna Penalba, Alejandro Bustamante, Anna Rosell, Joan Montaner
The limited accessibility to the brain has turned the cerebrospinal fluid (CSF) into a valuable source that may contribute to the complete understanding of the stroke pathophysiology. Here we have described the CSF proteome in the hyper-acute phase of cerebral ischemia by performing an aptamer-based proteomic assay (SOMAscan) in CSF samples collected before and 30 min after male Wistar rats had undergone a 90 min Middle Cerebral Artery Occlusion (MCAO) or sham-surgery. Proteomic results indicated that cerebral ischemia acutely increased the CSF levels of 716 proteins, mostly overrepresented in leukocyte chemotaxis and neuronal death processes...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29784898/pretreatment-with-simvastatin-upregulates-expression-of-bk-2r-and-cd11b-in-the-ischemic-penumbra-of-rats
#16
Jian-Ying Zhang, Qing-Ke Bai, Ying-Dong Zhang
Inhibitors of 3-hydroxy-3-methylglutaryl coenzyme A reductases, collectively known as statins, have been shown to minimize cerebral ischemic events in patients. We assessed the mechanisms of simvastatin pretreatment in preventing cerebral ischemia/reperfusion injury in rats using a model of middle cerebral artery occlusion (MCAO). Rats were pretreated with simvastatin 14 days prior to MCAO induction. At 3, 24, and 48 hours after reperfusion, bradykinin levels in the ischemic penumbra were assayed by ELISA, mRNA levels of bradykinin B2 receptors (BK-2Rs) and CD11b were measured by fluorescent quantitative real-time PCR (RT-PCR), and co-expression of microglia and BK-2Rs was determined by immunofluorescence...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29783870/safety-and-efficacy-of-a-new-outreach-distal-access-catheter-tactics-for-coil-embolization-of-unruptured-intracranial-aneurysms
#17
Toshinori Matsushige, Shigeyuki Sakamoto, Daizo Ishii, Katsuhiro Shinagawa, Koji Shimonaga, Masahiro Hosogai, Tomohiro Kawasumi, Junpei Oshita, Takahito Okazaki, Kaoru Kurisu
Background and purpose Current large-bore catheters can be easily and safely placed in the intracranial vessels for the stabilization of microcatheters in several neurointervention scenarios. We considered that a novel 3.4 French catheter (TACTICS, Technorat Corporation, Aichi, Japan) might be useful for intermediate/distal access in a triaxial system. Here, we present our initial experience using the TACTICS catheter for treatment of intracranial aneurysms. Materials and methods A total of 35 endovascular coils were placed to embolize unruptured intracranial aneurysms of the anterior circulation using the TACTICS catheter between December 2016 and November 2017...
January 1, 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29783867/virtual-stenting-of-intracranial-aneurysms-a-pilot-study-for-the-prediction-of-treatment-success-based-on-hemodynamic-simulations
#18
Philipp Berg, Sylvia Saalfeld, Gábor Janiga, Olivier Brina, Nicole M Cancelliere, Paolo Machi, Vitor M Pereira
Endovascular treatment of intracranial aneurysms using flow-diverting devices has revolutionized the treatment of large and complex lesions due to its minimally invasive nature and potential clinical outcomes. However, incomplete or delayed occlusion and persistent intracranial aneurysm growth are still an issue for up to one-third of the patients. We evaluated two patients with intracranial aneurysm located at the internal carotid artery who were treated with flow-diverting devices and had opposite outcomes...
May 1, 2018: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/29781369/contralateral-extensive-cerebral-hemorrhagic-venous-infarction-caused-by-retrograde-venous-reflux-into-the-opposite-basal-vein-of-rosenthal-in-posttraumatic-carotid-cavernous-fistula-a-case-report-and-literature-review
#19
Prasert Iampreechakul, Adisak Tanpun, Punjama Lertbusayanukul, Somkiet Siriwimonmas
We describe a patient with traumatic carotid-cavernous fistula (CCF), subsequently developing contralateral extensive hemorrhagic venous infarction from retrograde venous reflux into the opposite basal vein of Rosenthal. A 54-year-old woman was involved in a motor vehicle accident and sustained severe traumatic brain injury. Two months later, she developed bilateral proptosis and audible bruit. Magnetic resonance imaging (MRI) and magnetic resonance angiography (MRA) of the brain demonstrated the right direct CCF...
January 1, 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29781051/prehospital-prediction-of-large-vessel-occlusion-in-suspected-stroke-patients
#20
REVIEW
Kevin J Keenan, Charles Kircher, Jason T McMullan
PURPOSE OF REVIEW: Recent advances in endovascular thrombectomy have made acute ischemic stroke due to a large vessel occlusion more treatable than ever. Rapid access to treatment remains paramount and multiple large vessel occlusion prediction scales have been created to enhance prehospital identification and triage of these patients. This review summarizes the current state of large vessel occlusion prediction scales, proposes a set of ideal scale features, and discusses the future of these scales and prehospital neurological emergency response systems...
May 21, 2018: Current Atherosclerosis Reports
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