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https://www.readbyqxmd.com/read/28538402/dissection-extending-from-extra-to-intracranial-arteries-a-case-report-of-progressive-ischemic-stroke
#1
Fu-Liang Zhang, Zhen-Ni Guo, Yang Liu, Yun Luo, Yi Yang
RATIONALE: Cervicocephalic artery dissections, once considered a rare disease, have become increasingly recognized as a cause of stroke in young and middle-aged individuals. Early diagnosis is mandatory because anticoagulation or antithrombotic therapy can help prevent primary or secondary ischemic events. However, the diagnosis is still a crucial challenge for radiologists and neurologists. PATIENT CONCERNS: We reported a rare case of 33-year-old patient with progressive ischemic stroke due to dissection from an intimal tear in the right proximal internal carotid artery to distal middle cerebral artery...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28538193/ethyl-pyruvate-protects-pc12-cells-from-oxygen-glucose-deprivation-a-potential-role-in-ischemic-cerebrovascular-disease
#2
Wenbo Li, Jiyu Lou, Liping Wei, Hongying Bai, Yaohui Zhang, Yuqing He
The protective potential of ethyl pyruvate (EP) on neuron has been investigated previously. This study was intended to investigate the effects of EP on the severity of oxygen-glucose deprivation (OGD)-induced injury in neural-like PC12 cells. PC12 cells were exposed to OGD condition with or without EP treatment. Then, cell viability, apoptosis, and the expressions of neurotrophic factors were detected. Further, Sprague-Dawley rats were intravenously administered with 5mg/kg EP for 14 days post-middle cerebral artery occlusion (MCAO)...
May 21, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28538088/effects-of-the-insulin-sensitizer-metformin-in-alzheimer-disease-pilot-data-from-a-randomized-placebo-controlled-crossover-study
#3
Aaron M Koenig, Dawn Mechanic-Hamilton, Sharon X Xie, Martha F Combs, Anne R Cappola, Long Xie, John A Detre, David A Wolk, Steven E Arnold
Epidemiological studies have identified a robust association between type II diabetes mellitus and Alzheimer disease (AD), and neurobiological studies have suggested the presence of central nervous system insulin resistance in individuals with AD. Given this association, we hypothesized that the central nervous system-penetrant insulin-sensitizing medication metformin would be beneficial as a disease-modifying and/or symptomatic therapy for AD, and conducted a placebo-controlled crossover study of its effects on cerebrospinal fluid (CSF), neuroimaging, and cognitive biomarkers...
April 2017: Alzheimer Disease and Associated Disorders
https://www.readbyqxmd.com/read/28535201/regulatory-t-cells-ameliorate-tissue-plasminogen-activator-induced-brain-haemorrhage-after-stroke
#4
Leilei Mao, Peiying Li, Wen Zhu, Wei Cai, Zongjian Liu, Yanling Wang, Wenli Luo, Ruth A Stetler, Rehana K Leak, Weifeng Yu, Yanqin Gao, Jun Chen, Gang Chen, Xiaoming Hu
Delayed thrombolytic treatment with recombinant tissue plasminogen activator (tPA) may exacerbate blood-brain barrier breakdown after ischaemic stroke and lead to lethal haemorrhagic transformation. The immune system is a dynamic modulator of stroke response, and excessive immune cell accumulation in the cerebral vasculature is associated with compromised integrity of the blood-brain barrier. We previously reported that regulatory T cells, which function to suppress excessive immune responses, ameliorated blood-brain barrier damage after cerebral ischaemia...
May 22, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28534706/analyses-of-thrombi-in-acute-ischemic-stroke-a-consensus-statement-on-current-knowledge-and-future-directions
#5
Simon F De Meyer, Tommy Andersson, Blaise Baxter, Martin Bendszus, Patrick Brouwer, Waleed Brinjikji, Bruce Cv Campbell, Vincent Costalat, Antoni Dávalos, Andrew Demchuk, Diederik Dippel, Jens Fiehler, Urs Fischer, Michael Gilvarry, Matthew J Gounis, Jan Gralla, Olav Jansen, Tudor Jovin, David Kallmes, Pooja Khatri, Kennedy R Lees, Elena López-Cancio, Charles Majoie, Henk Marquering, Ana Paula Narata, Raul Nogueira, Peter Ringleb, Adnan Siddiqui, István Szikora, David Vale, Rüdiger von Kummer, Albert J Yoo, Werner Hacke, David S Liebeskind
Limited data exist on clot composition and detailed characteristics of arterial thrombi associated with large vessel occlusion in acute ischemic stroke. Advances in endovascular thrombectomy and related imaging modalities have created a unique opportunity to analyze thrombi removed from cerebral arteries. Insights into thrombus composition, etiology, physical properties and neurovascular interactions may lead to future advancements in acute ischemic stroke treatment and improved clinical outcomes. Advances in imaging techniques may enhance clot characterization and inform therapeutic decision-making prior to treatment and reveal stroke etiology to guide secondary prevention...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28534102/circulating-microaggregates-during-cardiac-surgery-precedes-postoperative-stroke
#6
Zühre Uz, Dan M J Milstein, Can Ince, Bastian A J M de Mol
Postoperative stroke and encephalopathy are potentially serious complications associated with coronary artery bypass grafting. In this case report a 78-year-old male patient receiving routine elective cardiac surgery presented with microaggregations in the sublingual microcirculation while on cardiopulmonary bypass that was undetected by routine intraoperative anticoagulation assessment. Microaggregates identified using video microscopy on his sublingual microcirculation during the procedure preceded a stroke postoperatively...
May 22, 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28533602/effects-of-skilled-reach-training-with-affected-forelimb-and-treadmill-exercise-on-the-expression-of-neurotrophic-factor-following-ischemia-induced-brain-injury-in-rats
#7
Min-Sik Yong, Seong-Gil Kim, Song-Hee Cheon
[Purpose] The aim of the present study was to investigate effects of skilled reach training with affected forelimb and treadmill exercise on the expression of neurotrophic factor following ischemia-induced brain injury in rats. [Subjects and Methods] Thirty male Sprague-Dawley rats were divided into 3 groups randomly: namely, the control sacrified 2 weeks after surgery, skilled reach training with forepaw contralateral to brain injury for 2 weeks, and treadmill exercise for 2 weeks. Transient focal cerebral ischemia was induced by intraluminal occlusion of the left middle cerebral artery...
April 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28532471/perfusion-by-arterial-spin-labelling-following-single-dose-tadalafil-in-small-vessel-disease-pastis-study-protocol-for-a-randomised-controlled-trial
#8
Mathilde M H Pauls, Natasha Clarke, Sarah Trippier, Shai Betteridge, Franklyn A Howe, Usman Khan, Christina Kruuse, Jeremy B Madigan, Barry Moynihan, Anthony C Pereira, Debbie Rolfe, Egill Rostrup, Caroline E Haig, Thomas R Barrick, Jeremy D Isaacs, Atticus H Hainsworth
BACKGROUND: Cerebral small vessel disease is a common cause of vascular cognitive impairment in older people, with no licensed treatment. Cerebral blood flow is reduced in small vessel disease. Tadalafil is a widely prescribed phosphodiesterase-5 inhibitor that increases blood flow in other vascular territories. The aim of this trial is to test the hypothesis that tadalafil increases cerebral blood flow in older people with small vessel disease. METHODS/DESIGN: Perfusion by Arterial Spin labelling following Single dose Tadalafil In Small vessel disease (PASTIS) is a phase II randomised double-blind crossover trial...
May 22, 2017: Trials
https://www.readbyqxmd.com/read/28531278/cardiovascular-toxic-effects-of-targeted-cancer-therapy
#9
Kazuko Tajiri, Kazutaka Aonuma, Ikuo Sekine
Over the past decade, there has been a major shift in chemotherapy from non-specific cytotoxic drugs to molecular targeted drug therapies. As more molecular targeted therapies are developed, new types of cardiovascular toxicities induced by targeted therapies are a growing problem. Cardiotoxicity induced by the human epidermal growth factor receptor-2 inhibitor trastuzumab manifests as decreased left ventricular ejection fraction. In contrast to anthracycline treatment, most cardiac events occur during trastuzumab treatment, but are reversed quickly when treatment is interrupted and cardiac intervention is established...
May 20, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28530848/splanchnic-thoracoabdominal-and-cerebral-blood-flow-volumes-in-healthy-children-and-young-adults-in-fasting-and-postprandial-states-determining-reference-ranges-by-using-phase-contrast-mr-imaging
#10
Prakash Muthusami, Shi-Joon Yoo, Rajiv Chaturvedi, Navjot Gill, Jonathan Windram, Daryl Schantz, Milan Prsa, Pablo Caro-Dominguez, Mike Seed, Lars Grosse-Wortmann, Simon C Ling, Govind B Chavhan
Purpose To estimate reference ranges for blood flow volume (BFV) in major splanchnic, thoracoabdominal, and neck vessels by using phase-contrast magnetic resonance (MR) imaging in children and young adults in fasting and postprandial states. Materials and Methods In this institutional research ethics board-approved prospective study, healthy volunteers underwent phase-contrast MR imaging in a fasting state and again after a standardized meal. BFV values were reported as medians and ranges, and postmeal to premeal BFV ratios were calculated...
May 22, 2017: Radiology
https://www.readbyqxmd.com/read/28530159/curative-and-adjunctive-avm-onyx-embolization-of-avms-through-the-choroidal-arteries
#11
Xianli Lv, Xiulan Hu, Wei Li, Hongwei He, Chuhan Jiang, Youxiang Li
Objective The anterior or posterior choroidal artery is often recruited to supply deep location arteriovenous malformations (AVMs). This study is to report curative and adjunctive AVM Onyx embolization through these arteries. Methods This study retrospectively reviewed six patients with cerebral AVMs who underwent endovascular embolization through the choroidal arteries between October 2015 and October 2016. Embolization was performed as a curative procedure in five patients and adjunctive procedure in one patient...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28530158/analyzing-circle-of-willis-blood-flow-in-ischemic-stroke-patients-through-3d-stroke-arterial-flow-estimation
#12
Aichi Chien, Fernando Viñuela
Background The objective of ischemic stroke (IS) treatment is to achieve revascularization in cerebral arteries to restore blood flow. However, there is no available method to extract arterial flow data from clinical CTA images. We developed 3D Stroke Arterial Flow Estimation (SAFE), which provides blood flow data throughout the Circle of Willis based on 3D CTA and allows comparison of arterial flow distribution in the brain. Methods We implemented a newly developed 3D vascular reconstruction algorithm for clinical stroke CTA images...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28530081/-evaluation-of-the-association-between-antihypertensive-treatment-and-development-of-stroke
#13
Margarita Fraimovitch, Yosef Tzvi, Reuven Zimlichman
INTRODUCTION: An ischemic stroke is an event that occurs due to cerebral vascular disease and is directly related to the degree of vascular damage. This process is associated with atherosclerosis progression and is influenced by the presence of cardiovascular risk factors. AIMS: One of the goals of our research was to examine whether specific medications used for treating hypertension are associated with the development of strokes. METHODS: In a retrospective study of patients who were hospitalized between the years 2003-2008 due to a cerebrovascular accident (CVA) or a transient ischemic attack (TIA), 916 cases of stroke patients were reviewed...
September 2016: Harefuah
https://www.readbyqxmd.com/read/28529944/optimization-of-time-for-neural-stem-cells-transplantation-for-brain-stroke-in-rats
#14
Seyyed Mohyeddin Ziaee, Parisa Tabeshmehr, Khawaja Husnain Haider, Majidreza Farrokhi, Abdolhamid Shariat, Atena Amiri, Seyed Mojtaba Hosseini
BACKGROUND: Despite encouraging data in terms of neurological outcome, stem cell based therapy for ischemic stroke in experimental models and human patients is still hampered by multiple as yet un-optimized variables, i.e., time of intervention, that significantly influence the prognosis. The aim of the present study was to delineate the optimum time for neural stem cells (NSCs) transplantation after ischemic stroke. METHODS: The NSCs were isolated from 14 days embryo rat ganglion eminence and were cultured in NSA medium (neurobasal medium, 2% B27, 1% N2, bFGF 10 ng/mL, EGF 20 ng/mL and 1% pen/strep)...
2017: Stem Cell Investigation
https://www.readbyqxmd.com/read/28528966/nampt-inhibitor-protects-ischemic-neuronal-injury-in-rat-brain-via-anti-neuroinflammation
#15
Chen-Xiang Chen, Jing Huang, Ga-Qi Tu, Jia-Tong Lu, Xian Xie, Bing Zhao, Ming Wu, Qiao-Juan Shi, San-Hua Fang, Er-Qing Wei, Wei-Ping Zhang, Yun-Bi Lu
Nicotinamide phosphoribosyltransferase (NAMPT) is an important neuroprotective factor in cerebral ischemia, and it has been reported that NAMPT inhibitors can aggravate neuronal injury in the acute phase. However, because it is a cytokine, NAMPT participates in many inflammatory diseases in the peripheral system, and its inhibitors have therapeutic effects. Following cerebral ischemia, the peripheral and resident inflammatory and immune cells produce many pro-inflammatory mediators in the ischemic area, which induce neuroinflammation and impair the brain...
May 18, 2017: Neuroscience
https://www.readbyqxmd.com/read/28528845/comparison-of-3-and-7-t-asl-techniques-for-concurrent-functional-perfusion-and-bold-studies
#16
Dimo Ivanov, Anna Gardumi, Roy Am Haast, Josef Pfeuffer, Benedikt A Poser, Kâmil Uludağ
Arterial spin labeling (ASL) is the primary non-invasive MRI approach to measure baseline cerebral blood flow (CBF) in healthy subjects and patients. ASL also allows concurrent functional BOLD signal and CBF measurements, but the latter typically suffers from low contrast-to-noise (CNR) ratio. Ultra-high-field imaging significantly boosts BOLD signal CNR. However, it is contested whether also CBF CNR benefits from increasing magnetic field strength, especially given that technical challenges related to field inhomogeneities and power deposition constraints exist...
May 18, 2017: NeuroImage
https://www.readbyqxmd.com/read/28528323/c-graph-a-validated-scoring-system-for-early-stratification-of-neurologic-outcome-after-out-of-hospital-cardiac-arrest-treated-with-targeted-temperature-management
#17
Erich L Kiehl, Alex M Parker, Ralph M Matar, Matthew F Gottbrecht, Michelle C Johansen, Mark P Adams, Lori A Griffiths, Steven P Dunn, Katherine L Bidwell, Venu Menon, Kyle B Enfield, Lawrence W Gimple
BACKGROUND: Out-of-hospital cardiac arrest (OHCA) results in significant morbidity and mortality, primarily from neurologic injury. Predicting neurologic outcome early post-OHCA remains difficult in patients receiving targeted temperature management. METHODS AND RESULTS: Retrospective analysis was performed on consecutive OHCA patients receiving targeted temperature management (32-34°C) for 24 hours at a tertiary-care center from 2008 to 2012 (development cohort, n=122)...
May 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28527875/magnolol-attenuates-the-inflammation-and-apoptosis-through-the-activation-of-sirt1-in-experimental-stroke-rats
#18
Dong-Quan Kou, Yan-Ling Jiang, Jia-Hua Qin, Yin-Hui Huang
BACKGROUND: Silent information regulator 1 (SIRT1), a histone deacetylase, plays a protective role in ischemic brain injury. Previous studies have shown that magnolol has a beneficial effect on ischemic stroke; however, the role of SIRT1 in the protective effect of magnolol against cerebral ischemia has not been investigated. METHODS: We used a middle cerebral artery occlusion model of stroke in rats. Before stroke induction, the rats received intraperitoneal injections of magnolol with or without the SIRT1 inhibitor, EX527...
January 10, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28527588/mechanical-thrombectomy-for-acute-ischemic-stroke-in-a-patient-with-concomitant-spontaneous-intracerebral-hemorrhage
#19
Stefano Forlivesi, Paolo Bovi, Manuel Cappellari
Data from randomized clinical trials and current guidelines suggest that patients with anterior circulation occlusion with contraindications to intravenous thrombolysis may benefit from direct mechanical thrombectomy. Nevertheless, no data are available on the efficacy and safety of direct mechanical thrombectomy in patients with concomitant spontaneous intracerebral hemorrhage. We report the case of a 51-year-old woman with a spontaneous intracerebral hemorrhage in the right parietal and occipital lobes, who experienced, 7 days later, an occlusion of the proximal left middle cerebral artery...
May 17, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28526782/acute-impact-of-drinking-coffee-on-the-cerebral-and-systemic-vasculature
#20
Takuro Washio, Hiroyuki Sasaki, Shigehiko Ogoh
Previous studies have suggested that the risk of ischemic stroke increases immediately after drinking coffee. Indeed, drinking coffee, that is, caffeine, acutely increases arterial stiffness as well as blood pressure and peripheral vascular resistance. On the other hand, it has been reported that arterial stiffening is associated with elevation in the pulsatility index (PI) of cerebral blood flow (CBF), which increases the risk of brain disease. However, the effect of drinking coffee on the PI of the CBF and its interaction with arterial stiffness remain unknown...
May 2017: Physiological Reports
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