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https://www.readbyqxmd.com/read/28106731/hypoxia-inducible-factor-1%C3%AE-promotes-endogenous-adaptive-response-in-rat-model-of-chronic-cerebral-hypoperfusion
#1
Ying Yang, Jieyang Ju, Min Deng, Jing Wang, Hui Liu, Li Xiong, Junjian Zhang
Hypoxia inducible factor 1α (HIF-1α), a pivotal regulator of gene expression in response to hypoxia and ischemia, is now considered to regulate both pro-survival and pro-death responses depending on the duration and severity of the stress. We previously showed that chronic global cerebral hypoperfusion (CCH) triggered long-lasting accumulation of HIF-1α protein in the hippocampus of rats. However, the role of the stabilized HIF-1α in CCH is obscure. Here, we knock down endogenous HIF-1α to determine whether and how HIF-1α affects the disease processes and phenotypes of CCH...
January 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28088807/posterior-versus-anterior-circulation-stroke-in-young-adults-a-comparative-study-of-stroke-aetiologies-and-risk-factors-in-stroke-among-young-fabry-patients-sifap1
#2
Bettina von Sarnowski, Ulf Schminke, Ulrike Grittner, Christian Tanislav, Tobias Böttcher, Michael G Hennerici, Turgut Tatlisumak, Jukka Putaala, Manfred Kaps, Franz Fazekas, Christian Enzinger, Arndt Rolfs, Christof Kessler
BACKGROUND: Although 20-30% of all strokes occur in the posterior circulation, few studies have explored the characteristics of patients with strokes in the posterior compared to the anterior circulation so far. Especially data on young patients is missing. METHODS: In this secondary analysis of data of the prospective multi-centre European sifap1 study that investigated stroke and transient ischemic attack (TIA) patients aged 18-55 years, we compared vascular risk factors, stroke aetiology, presence of white matter hyperintensities (WMH) and cerebral microbleeds (CMB) between patients with ischaemic posterior circulation stroke (PCS) and those having suffered from anterior circulation stroke (ACS) based on cerebral MRI...
January 14, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28076021/radiologic-assessment-of-native-renal-vasculature-a-multimodality-review
#3
Sayf Al-Katib, Monisha Shetty, Syed Mohammad A Jafri, Syed Zafar H Jafri
A wide range of clinically important anatomic variants and pathologic conditions may affect the renal vasculature, and radiologists have a pivotal role in the diagnosis and management of these processes. Because many of these entities may not be suspected clinically, renal artery and vein assessment is an essential application of all imaging modalities. An understanding of the normal vascular anatomy is essential for recognizing clinically important anatomic variants. An understanding of the protocols used to optimize imaging modalities also is necessary...
January 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28069505/end-point-immobilization-of-heparin-on-plasma-treated-surface-of-electrospun-polycarbonate-urethane-vascular-graft
#4
Xuefeng Qiu, Benjamin Li-Ping Lee, Xinghai Ning, Niren Murthy, Nianguo Dong, Song Li
: Small-diameter synthetic vascular grafts have high failure rate due to primarily surface thrombogenicity, and effective surface chemical modification is critical to maintain the patency of the grafts. In this study, we engineered a small-diameter, elastic synthetic vascular graft with off-the-shelf availability and anti-thrombogenic activity. Polycarbonate-urethane (PCU), was electrospun to produce nanofibrous grafts that closely mimicked a native blood vessel in terms of structural and mechanical strength...
January 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28064326/diabetic-patients-are-at-a-higher-risk-of-lacunar-infarction-and-dyslipidemia-results-of-a-comparative-pilot-study-from-king-fahad-hospital-of-the-university-saudi-arabia
#5
Azra Zafar
OBJECTIVE: To describe the various risk factors and identify the characteristics of ischemic stroke in diabetic patients. METHODS: A retrospective study carried out at King Fahd Hospital of the University in Al-Khobar, kingdom of Saudi Arabia from February 2010 to December 2015. Statistical analysis was performed by the Statistical Package for the Social Sciences (version 22.0, SPSS Inc, Chicago, IL, USA). RESULTS: One hundred and twenty-seven diabetic patients with ischemic stroke were compared with 127 non-diabetics...
January 2017: Neurosciences: the Official Journal of the Pan Arab Union of Neurological Sciences
https://www.readbyqxmd.com/read/28059659/antiplatelet-therapy-for-the-prevention-of-peri-coiling-thromboembolism-in-high-risk-patients-with-ruptured-intracranial-aneurysms
#6
Nancy J Edwards, Wesley H Jones, Aditya Sanzgiri, Juan Corona, Mark Dannenbaum, Peng Roc Chen
OBJECTIVE The most frequent procedural complication of the endovascular treatment of intracranial aneurysms is a thromboembolic event (TEE); in a subset of patients, such events will cause permanent neurological disability. In patients with unruptured aneurysms, increasing evidence supports the use of periprocedural antiplatelet therapy to prevent TEEs. The object of this study was to evaluate whether patients with ruptured aneurysms and subarachnoid hemorrhage would also benefit from periprocedural antiplatelet therapy...
January 6, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28059035/the-sdldl-reduces-mrc1-expression-level-and-secretion-of-histamine-in-differentiated-m2-macrophages-from-patients-with-coronary-artery-stenosis
#7
Ameneh Yarnazari, Mohammad Najafi, Parisa Hassanpour, Syed Reza Hosseini-Fard, Abdollah Amirfarhangi
The macrophage polarization is proposed to be involved in initial events and remodeling of atherosclerosis plaques. Mannose receptor, C type 1 (MRC1) is a trans-membrane glycoprotein participating in phagocytosis and, is highly expressed in the M2 macrophages. The aim of this study was to investigate the effects of sdLDL (small dense LDL) on the MRC1 gene expression level and secretion of histamine in the differentiated M2 macrophages from monocytes of patients with coronary artery stenosis and healthy subjects...
January 5, 2017: Cardiovascular & Hematological Disorders Drug Targets
https://www.readbyqxmd.com/read/28052272/ischemic-stroke-in-young-adults-of-northern-china-characteristics-and-risk-factors-for-recurrence
#8
Fang Li, Li Yang, Rui Yang, Wei Xu, Fu-Ping Chen, Nan Li, Jin-Biao Zhang
BACKGROUND: Young adults accounted for 10-14% of ischemic stroke patients. The risk factors may differ in this population from elder patients. In addition, the factors associated with stroke recurrence in this population have not been well investigated. OBJECTIVE: The study aimed to investigate the characteristics and risk factors associated with recurrence of ischemic stroke in young adults. METHODS: Clinical data of 1,395 patients of age 18-45 years who were treated between 2008 and 2014 in 3 centers located in northern China was reviewed...
January 5, 2017: European Neurology
https://www.readbyqxmd.com/read/28048943/modeling-small-angle-x-ray-scattering-data-for-low-density-lipoproteins-insights-into-the-fatty-core-phase-packing-and-transition
#9
Selma Maric, Tania Kjellerup Lind, Jeppe Lyngsø, Marite Cardenas, Jan Skov Pedersen
Atherosclerosis and its clinical consequences are the leading cause of death in the west. While many studies throughout the last decades have aimed at understanding the disease, the clinical markers in use today still fail to accurately predict the risks. The role of the main clinical indicator of today, the low density lipoprotein (LDL), in depositing fat to the vessel wall is believed to be the onset of the process. However, many subfractions of the LDL, which differ both in structure and composition, are present in the blood and amongst different individuals...
January 3, 2017: ACS Nano
https://www.readbyqxmd.com/read/28048545/we-de-207a-04-advances-in-radiological-neuro-endovascular-interventional-imaging
#10
S Rudin
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048454/we-de-207a-00-advances-in-image-guided-neurointerventions-clinical-pull-and-technology-push
#11
Jeffrey Siewerdsen, Rebecca Fahrig
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047800/we-de-207a-01-parallels-in-the-evolution-of-x-ray-angiographic-systems-and-devices-used-for-minimally-invasive-endovascular-therapy
#12
C Strother
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047144/we-de-207a-02-advances-in-cone-beam-ct-anatomical-and-functional-imaging-in-angio-suite-to-enable-one-stop-shop-stroke-imaging-workflow
#13
G Chen
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046482/we-de-207a-03-recent-advances-in-devices-used-in-neuro-interventions
#14
M Gounis
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28041720/atrial-fibrillation-is-a-major-cause-of-stroke-in-apneic-patients-a-prospective-study
#15
M Poli, P Philip, J Taillard, S Debruxelles, P Renou, J M Orgogozo, F Rouanet, I Sibon
OBJECTIVES: Large prospective studies have established that sleep-disordered breathing (SDB) is associated with an increased incidence of cardiovascular and cerebrovascular diseases. Heterogeneous results have been published about SDB and ischaemic stroke mechanism. The aim of this study was to evaluate the relationship between poststroke apneic syndrome and stroke aetiologies according to the ASCO classification. METHODS: A total of 134 patients with acute ischaemic cerebrovascular events were prospectively included...
March 4, 2016: Sleep Medicine
https://www.readbyqxmd.com/read/28039940/epac-rap1-activated-mesenchymal-stem-cells-improve-cardiac-function%C3%A2-in-rat-model-of-myocardial-infarction
#16
Irfan Khan, Anwar Ali, Muhammad Aleem Akhter, Nadia Naeem, Maqsood Ahmed Chotani, Hana'a Iqbal, Nurul Kabir, Mehnaz Atiq, Asmat Salim
INTRODUCTION: Rap1, a member of Ras superfamily of small GTP-binding proteins, is involved in cardiovascular biology in numerous ways. It is an evolutionary conserved regulator of adhesion, polarity, differentiation and growth. AIMS: Our aim was to analyze Rap1 activated rat bone marrow mesenchymal stem cells (MSCs) for their potential role in adhesion and cardiac differentiation. METHODS: Myocardial infarction (MI) was produced in Sprague Dawley (SD) rats through occlusion of the left anterior descending coronary artery...
December 31, 2016: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28034657/failure-of-physiologic-transformation-of-spiral-arteries-endothelial-and-trophoblast-cell-activation-and-acute-atherosis-in-the-basal-plate-of-the-placenta
#17
Carlos A Labarrere, Hector L Dicarlo, Elaine Bammerlin, James W Hardin, Yeon M Kim, Piya Chaemsaithong, David M Haas, Ghassan S Kassab, Roberto Romero
BACKGROUND: Failure of physiologic transformation of spiral arteries has been reported in preeclampsia, fetal growth restriction, fetal death, and spontaneous preterm labor with intact or ruptured membranes. Spiral arteries with failure of physiologic transformation are prone to develop atherosclerotic-like lesions of atherosis. There are striking parallels between preeclampsia and atherosclerotic disease, and between lesions of atherosis and atherosclerosis. Endothelial activation, identified by intercellular adhesion molecule-1 (ICAM-1) expression, is present in atherosclerotic-like lesions of heart transplantation, and is considered a manifestation of rejection...
December 26, 2016: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28025048/tropoelastin-inhibits-intimal-hyperplasia-of-mouse-bioresorbable-arterial-vascular-grafts
#18
Tadahisa Sugiura, Riddhima Agarwal, Shuhei Tara, Tai Yi, Yong-Ung Lee, Christopher K Breuer, Anthony S Weiss, Toshiharu Shinoka
: Neointimal hyperplasia, which results from the activation, proliferation and migration of vascular smooth muscle cells (SMCs), is a detrimental condition for vascular stents or vascular grafts that leads to stenosis. Preventing neointimal hyperplasia of vascular grafts is critically important for the success of arterial vascular grafts. We hypothesized that tropoelastin seeding onto the luminal surface of the graft would prevent neointimal hyperplasia through suppressing neointimal smooth muscle cell proliferation...
December 23, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/28017223/parent-vessel-occlusion-for-treatment-of-cerebral-aneurysms-is-there-still-an-indication-a-series-of-17-patients
#19
Nishant Ganesh Kumar, Travis R Ladner, Imad S Kahn, Scott L Zuckerman, Christopher B Baker, Marybess Skaletsky, Deborah Cushing, Matthew R Sanborn, J Mocco, Robert D Ecker
INTRODUCTION/PURPOSE: Flow diversion has allowed cerebrovascular neurosurgeons and neurointerventionalists to treat complex, large aneurysms, previously treated with trapping, bypass, and/or parent vessel sacrifice. However, a minority of aneurysms remain that cannot be treated endovascularly, and microsurgical treatment is too dangerous. However, balloon test occlusion (macro and micro), micro WADA testing, ICG, intra-angiography and intra-operative monitoring are all available to clinically test the hypothesis that vessel sacrifice is safe...
January 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28008000/stroke-outcomes-are-worse-with-larger-leukoaraiosis-volumes
#20
Wi-Sun Ryu, Sung-Ho Woo, Dawid Schellingerhout, Min Uk Jang, Kyoung-Jong Park, Keun-Sik Hong, Sang-Wuk Jeong, Jeong-Yong Na, Ki-Hyun Cho, Joon-Tae Kim, Beom Joon Kim, Moon-Ku Han, Jun Lee, Jae-Kwan Cha, Dae-Hyun Kim, Soo Joo Lee, Youngchai Ko, Yong-Jin Cho, Byung-Chul Lee, Kyung-Ho Yu, Mi Sun Oh, Jong-Moo Park, Kyusik Kang, Kyung Bok Lee, Tai Hwan Park, Juneyoung Lee, Heung-Kook Choi, Kiwon Lee, Hee-Joon Bae, Dong-Eog Kim
Leukoaraiosis or white matter hyperintensities are frequently observed on magnetic resonance imaging of stroke patients. We investigated how white matter hyperintensity volumes affect stroke outcomes, generally and by subtype. In total, 5035 acute ischaemic stroke patients were enrolled. Strokes were classified as large artery atherosclerosis, small vessel occlusion, or cardioembolism. White matter hyperintensity volumes were stratified into quintiles. Mean age (± standard deviation) was 66.3 ± 12.8, 59.6% male...
January 2017: Brain: a Journal of Neurology
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