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Cerebrovascular Malformations

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https://www.readbyqxmd.com/read/28725213/can-brain-natriuretic-peptides-and-osteoprotegerin-serve-as-biochemical-markers-for-the-detection-of-aortic-pathology-in-children-and-adolescents-with-turner-syndrome
#1
REVIEW
Meenal Mavinkurve, Clodagh S O'Gorman
Turner syndrome (TS) is a chromosomal disorder that affects 1:2,000 females. It results from either the complete or partial loss of the X chromosome as well as other aberrations. Clinical features of TS include short stature, delayed puberty, and congenital cardiac malformations. TS children also have an increased prevalence of cardiometabolic risk factors, which predisposes them to complications like coronary artery disease, cerebrovascular-related deaths, and aortic dissection. Early cardiac imaging, such as echocardiography and cardiac magnetic resonance imaging, are recommended to detect underlying aortic pathology...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28686111/delayed-treatment-of-ruptured-brain-avms-is-it-ok-to-wait
#2
Jeffrey S Beecher, Kristopher Lyon, Vin Shen Ban, Awais Vance, Cameron M McDougall, Louis A Whitworth, Jonathan A White, Duke Samson, H Hunt Batjer, Babu G Welch
OBJECTIVE Despite a hemorrhagic presentation, many patients with arteriovenous malformations (AVMs) do not require emergency resection. The timing of definitive management is not standardized in the cerebrovascular community. This study was designed to evaluate the safety of delaying AVM treatment in clinically stable patients with a new hemorrhagic presentation. The authors examined the rate of rehemorrhage or neurological decline in a cohort of patients with ruptured brain AVMs during a period of time posthemorrhage...
July 7, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28648010/-experience-of-sun-s-procedure-for-chronic-type-b-dissection-with-aortic-arch-involvement
#3
R D Qi, J M Zhu, L Chen, C N Li, Z Y Qiao, L J Cheng, Y P Ge, H O Hu, Y Xia, X Y Xing, T Zheng, Y M Liu, L Z Sun
Objective: To study the surgical treatment of chronic type B dissection with aortic arch involvement using Sun's procedure. Methods: Between February 2009 and December 2015, 29 patients [20 males, 9 females, with a mean age of (41±12) years, range 24-64 years] with type B dissection with aortic arch involvement underwent Sun's procedure. Sixteen patient had a history of hypertension. Marfan syndrome was observed in 9 cases, coronary artery disease in 3 cases, mitral regurgitation in 3 patients, cerebrovascular disease in one patient...
June 27, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28647711/down-syndrome-and-moyamoya-disease-unusual-cause-of-stroke
#4
Carlos Tavares Bello, Catarina Barreiros, Inês Gil, Carlos Vasconcelos
Down syndrome is a frequent clinical entity, being considered one of the most frequent chromosomal aberrations. It is characterised by a typical clinical phenotype and is associated with a heterogeneous group of organ and system-specific abnormalities. The cardiovascular system is commonly affected and if so, it may be associated with an increased morbidity and mortality. Cerebrovascular events in patients with Down syndrome are multifactorial, being possibly related to congenital heart disease, vascular malformations and traditional cardiovascular risk factors...
June 24, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28647420/increased-prevalence-of-cerebrovascular-disease-in-hospitalized-patients-with-ehlers-danlos-syndrome
#5
Sarasa T Kim, Harry Cloft, Kelly D Flemming, David F Kallmes, Giuseppe Lanzino, Waleed Brinjikji
BACKGROUND AND PURPOSE: Small studies have suggested that Ehlers-Danlos syndrome (EDS) is associated with a number of cerebrovascular complications. We sought to determine whether a clinical diagnosis of EDS is associated with a higher prevalence of cerebrovascular diseases than the general population by performing a case-control study of hospitalized patients in the Nationwide Inpatient Sample (NIS). METHODS: Using the 2000-2012 NIS, we performed a case-control study matching cases of EDS to controls without such a diagnosis...
August 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28634821/cavernous-malformations-of-central-nervous-system-in-pediatric-patients-our-single-centered-experience-in-50-patients-and-review-of-literature
#6
Dattaraj Paramanand Sawarkar, Suveen Janmatti, Rajinder Kumar, Pankaj Kumar Singh, Hitesh Kumar Gurjar, Shashank Sharad Kale, Bhawani Shanker Sharma, Ashok Kumar Mahapatra
PURPOSE: Cavernous malformations (CMs) are rare developmental cerebrovascular malformations of the central nervous system with a childhood prevalence of 0.3 to 0.53%. Our purpose was to assess the clinical features and microsurgical outcome in pediatric central nervous system (CNS) CMs. MATERIAL AND METHODS: We retrospectively enrolled all the CM patients admitted to our institute from 1 January 2001 to 31 December 2014. Data was analyzed for their clinical features and surgical outcome...
June 20, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28619493/dynamic-4d-cta-for-neuro-vascular-pathologies-a-case-series
#7
Ahmed Alnemari, Tarek R Mansour, Mohamad Bazerbashi, Mark Buehler, Jason Schroeder, Daniel Gaudin
BACKGROUND: The aim of this article is to illustrate, summarize, and review the multifaceted application of four-dimensional computed tomography angiography (4D-CTA) in the characterization and diagnosis of various cerebrovascular and tumor-associated vascular pathologies through the presentation of clinical cases including acute/chronic stroke, arteriovenous malformations, aneurysm, moya-moya disease, and the hypervascularity associated with a tumor and its relationship to pre-operative embolization...
June 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28548106/cerebrovascular-malformations-microbiota-promotes-cerebral-cavernous-malformations
#8
Charlotte Ridler
No abstract text is available yet for this article.
July 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28507836/microsurgical-removal-of-microcatheter-in-the-middle-cerebral-artery-during-resection-of-an-arteriovenous-malformation-resection
#9
Pejma Shazadeh Safavi, Sohum Desai, Daniel Branch, Juan R Ortega-Barnett
Surgical resection is the current standard of therapy for the treatment of arteriovenous malformation (AVM). Endovascular embolization is commonly used as an adjunct prior to surgical resection because it is believed to reduce the risk of intraoperative bleeding. Embolization has been associated with other complications including visual deficits, vessel perforation, and catheter adhesion. Catheter adhesion in which retained segments are contained within the embolization cast are not necessarily cause for concern, but retention of larger portions may confer an increased risk of thrombus formation...
April 13, 2017: Curēus
https://www.readbyqxmd.com/read/28492296/italian-consensus-in-neuroradiological-anaesthesia-icona-managing-anaesthesia-during-endovascular-procedures
#10
Carlo A Castioni, Andrea Amadori, Federico Bilotta, Moreno Bolzon, Edoardo Barboni, Anselmo Caricato, Guido Dall'acqua, Francesco DI Paola, Andrea Forastieri Molinari, Paolo Gritti, Italia LA Rosa, Marcello Longo, Carla Maglione, Pietro Martorano, Marina Munari, Valerio Perotti, Frank Rasulo, Maria Ruggiero, Antonio Santoro, Luigia Scudeller, Miriam Tumolo, Anna T Mazzeo
Anaesthetic management of patients undergoing endovascular procedures for treating intracranial aneurysms or cerebrovascular malformations must consider a number of specific challenges, in addition to those associated with anaesthesia for other specialties. In addition to maintenance of physiological stability, manipulation of systemic and cerebral haemodynamic parameters may be required to treat any sudden unexpected catastrophic neurological events. A multidisciplinary group including neuro- and pediatric anaesthesiologists, interventional neuroradiologists, neurosurgeons, and a clinical methodologist contributed to this document...
May 11, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28489816/endothelial-tlr4-and-the-microbiome-drive-cerebral-cavernous-malformations
#11
Alan T Tang, Jaesung P Choi, Jonathan J Kotzin, Yiqing Yang, Courtney C Hong, Nicholas Hobson, Romuald Girard, Hussein A Zeineddine, Rhonda Lightle, Thomas Moore, Ying Cao, Robert Shenkar, Mei Chen, Patricia Mericko, Jisheng Yang, Li Li, Ceylan Tanes, Dmytro Kobuley, Urmo Võsa, Kevin J Whitehead, Dean Y Li, Lude Franke, Blaine Hart, Markus Schwaninger, Jorge Henao-Mejia, Leslie Morrison, Helen Kim, Issam A Awad, Xiangjian Zheng, Mark L Kahn
Cerebral cavernous malformations (CCMs) are a cause of stroke and seizure for which no effective medical therapies yet exist. CCMs arise from the loss of an adaptor complex that negatively regulates MEKK3-KLF2/4 signalling in brain endothelial cells, but upstream activators of this disease pathway have yet to be identified. Here we identify endothelial Toll-like receptor 4 (TLR4) and the gut microbiome as critical stimulants of CCM formation. Activation of TLR4 by Gram-negative bacteria or lipopolysaccharide accelerates CCM formation, and genetic or pharmacologic blockade of TLR4 signalling prevents CCM formation in mice...
May 10, 2017: Nature
https://www.readbyqxmd.com/read/28432261/ccm2-and-pak4-act-downstream-of-atrial-natriuretic-peptide-signaling-to-promote-cell-spreading
#12
Koichi Miura, Takashi Nojiri, Yoshiharu Akitake, Koji Ando, Shigetomo Fukuhara, Masahiro Zenitani, Toru Kimura, Jun Hino, Mikiya Miyazato, Hiroshi Hosoda, Kenji Kangawa
Atrial natriuretic peptide (ANP) is a cardiac hormone released by the atrium in response to stretching forces. Via its receptor, guanylyl cyclase-A (GC-A), ANP maintains cardiovascular homeostasis by exerting diuretic, natriuretic, and hypotensive effects mediated, in part, by endothelial cells. Both in vivo and in vitro, ANP enhances endothelial barrier function by reducing RhoA activity and reorganizing the actin cytoskeleton. We established mouse endothelial cells that stably express GC-A and used them to analyze the molecular mechanisms responsible for actin reorganization...
May 19, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28366753/the-position-and-role-of-four-dimensional-computed-tomography-angiography-in-the-diagnosis-and-treatment-of-spinal-arteriovenous-fistulas
#13
Satoshi Yamaguchi, Kohei Takemoto, Masaaki Takeda, Yosuke Kajihara, Takafumi Mitsuhara, Manish Kolakshyapati, Kazutoshi Mukada, Kaoru Kurisu
BACKGROUND: Localization of the arteriovenous fistula (AVF) is a crucial step in the diagnosis and treatment of spinal vascular malformations (VMs). Noninvasive angiographic techniques such as dynamic magnetic resonance angiography and three-dimensional computed tomography angiography (CTA) have been used as standard modalities to localize AVF. With the increasing prevalence of high-specification computed tomography scanners, four-dimensional (4D) CTA is being increasingly used in the evaluation of cerebrovascular disorders...
July 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28338447/vein-of-galen-malformation-treated-with-the-micro-vascular-plug-system-case-report
#14
Woojin Joo, Philippe Mercier, Shiva Kheradmand, Peyman Shirani, Ahmed Sarhan, Samer K Elbabaa, Randall C Edgell
This case report describes the use of the Micro Vascular Plug (MVP) system in a mural-type vein of Galen aneurysmal malformation, resulting in successful occlusion of the cerebrovascular fistula. This result was confirmed with immediate cessation in blood flow and 6-month follow-up angiography. The unique characteristics of the MVP provide potential advantages over current embolic techniques for occlusion of high-flow, fistulous, intracranial vessels such as those seen in the vein of Galen aneurysmal malformation, and may represent a valuable addition to the currently available options...
June 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28323878/microsurgery-for-intracranial-arteriovenous-malformation-long-term-outcomes-in-445-patients
#15
Qingqing Ren, Min He, Yunhui Zeng, Zhiyong Liu, Hao Liu, Jianguo Xu
BACKGROUND: The management of intracranial arteriovenous malformations(AVMs) poses challenges to the cerebrovascular specialists. OBJECTIVE: To review the long-term outcomes of intracranial AVMs treated with microsurgical resections. METHODS: We performed a retrospective review of 445 patients with intracranial AVMs treated in our hospital from January 1st, 2008 to December 31st, 2014. The extracted data included demographic characteristics, clinical presentations, Spetzler-Martin (SM) grades, Supplemented Spetzler-Martin (SM-Supp) Grades, treatment modalities, long-term outcomes, and obliteration rates...
2017: PloS One
https://www.readbyqxmd.com/read/28318403/familial-cerebral-cavernous-malformations-are-associated-with-adrenal-calcifications-on-ct-scans-an-imaging-biomarker-for-a-hereditary-cerebrovascular-condition
#16
Corinne D Strickland, Steven C Eberhardt, Mary R Bartlett, Jeffrey Nelson, Helen Kim, Leslie A Morrison, Blaine L Hart
Purpose To determine if adrenal calcifications seen at computed tomography (CT) are associated with familial cerebral cavernous malformations (fCCMs) in carriers of the CCM1 Common Hispanic Mutation. Materials and Methods This study was approved by the institutional review board. The authors retrospectively reviewed abdominal CT scans in 38 patients with fCCM, 38 unaffected age- and sex-matched control subjects, and 13 patients with sporadic, nonfamilial cerebral cavernous malformation (CCM). The size, number, and laterality of calcifications and the morphologic characteristics of the adrenal gland were recorded...
August 2017: Radiology
https://www.readbyqxmd.com/read/28283187/successful-delayed-coiling-of-a-ruptured-growing-distal-posterior-cerebral-artery-mycotic-aneurysm
#17
C Champeaux, N Walker, J Derwin, A Grivas
Intracranial infectious aneurysm (IIA) is a rare form of cerebrovascular malformation for which obliteration may be undertaken after rupture or non-response to targeted antibiotic therapy. We discuss the case of a 19-year-old man who presented with acute neurologic decline (Glasgow Coma Scale of 8) and endocarditis. CT images demonstrated subarachnoid haemorrhage, hydrocephalus and a mycotic aneurysm on the left posterior cerebral artery. Conservative management was initially decided due to the high risk of stroke and hemianopia...
March 7, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28157750/management-of-unruptured-intracranial-aneurysms-and-cerebrovascular-malformations
#18
REVIEW
Kelly D Flemming, Giuseppe Lanzino
PURPOSE OF REVIEW: Unruptured intracranial aneurysms and vascular malformations are detected more frequently because of the increased use and availability of brain imaging. Management of these entities requires knowledge of which patients are at high risk for hemorrhage and what treatment options are available. This article summarizes the epidemiology, natural history, and management strategies for unruptured intracranial aneurysms, arteriovenous malformations, cavernous malformations, developmental venous anomalies, and capillary telangiectasias...
February 2017: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/28069909/pregnancy-increases-stroke-risk-up-to-1-year-postpartum-and-reduces-long-term-risk
#19
Chun-An Cheng, Jiunn-Tay Lee, Hung-Che Lin, Hui-Chen Lin, Chi-Hsiang Chung, Fu-Huang Lin, Chang-Huei Tsao, Yung-Fu Wu, Wu-Chien Chien, Hung-Wen Chiu
Background: : The incidence of stroke in pregnant women is low but trending upward. There are few studies of the topic in women of Asian ethnicity. Aim: We aim to evaluate stroke risk in Asian women during and after pregnancy. Design: : Using the Taiwan National Health Insurance database, we designed a retrospective study that included 18-45-year-old pregnant women between the years 2000 and 2010. We selected a 1:1 age-matched control group of non-pregnant women...
June 1, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28028148/strokes-associated-with-pregnancy-and-puerperium-a-nationwide-study-by-the-japan-stroke-society
#20
Kazumichi Yoshida, Jun C Takahashi, Yohei Takenobu, Norihiro Suzuki, Akira Ogawa, Susumu Miyamoto
BACKGROUND AND PURPOSE: The incidence and cause of strokes associated with pregnancy and the puerperium are still not fully understood. The aim of this study was to characterize pregnancy-related strokes in Japan using a large-scale survey with current imaging techniques. METHODS: A retrospective analysis was conducted based on clinical chart reviews in 736 stroke teaching hospitals certified by the Japan Stroke Society between 2012 and 2013, using a web-based questionnaire requesting the detailed clinical course without any personally identifying information...
February 2017: Stroke; a Journal of Cerebral Circulation
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