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https://www.readbyqxmd.com/read/27922251/endovascular-prevention-and-treatment-of-stroke-related-to-extracranial-carotid-artery-disease
#1
Leonardo Rangel-Castilla, Gary B Rajah, Hakeem J Shakir, Jason M Davies, Kenneth V Snyder, Adnan H Siddiqui, Elad I Levy, L N Hopkins
Acute ischemic stroke (AIS) is the leading cause of premature mortality and morbidity worldwide for both men and women. Extracranial carotid artery stenosis/occlusion is responsible for approximately 11.5%% of ischemic strokes, whereas extracranial large vessel disease comprises roughly 16.6% of ischemic strokes. Carotid artery disease has been the source of significant debate among neurovascular and cardiovascular specialists, as well as vascular surgeons, as to the best method of revascularization, surgical reconstruction versus endovascular recanalization...
December 6, 2016: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/27921018/comparison-of-the-protective-effects-of-erythropoietin-and-melatonin-on-renal-ischemia-reperfusion-injury
#2
Shokofeh Banaei, Nasser Ahmadiasl, Alireza Alihemmati
BACKGROUND: Renal ischemia-reperfusion (IR) contributes to the development of acute renal failure (ARF). Oxygen free radicals are considered to be the principal components involved in the pathophysiological tissue alterations observed during renal IR. OBJECTIVES: In this study, we compared the effects of melatonin (MEL) and erythropoietin (EPO), both known antioxidant and anti-inflammatory agents, on IR-induced renal injury in rats. MATERIALS AND METHODS: Wistar albino rats were unilaterally nephrectomized and then subjected to 45 minutes of renal pedicle occlusion followed by 24 hours of reperfusion...
July 2016: Trauma Monthly
https://www.readbyqxmd.com/read/27920715/intra-arterial-mechanical-thrombectomy-an-effective-treatment-for-ischemic-stroke-caused-by-endocarditis
#3
Olafur Sveinsson, Lars Herrman, Staffan Holmin
Patients with stroke secondary to infectious endocarditis have a high in-hospital morbidity and mortality, with only one-third becoming functionally independent. Infective endocarditis is usually considered a relative contraindication to thrombolytic therapy. We describe 3 consecutive cases of acute middle cerebral artery occlusion due to infective endocarditis, who were all successfully treated with intra-arterial mechanical thrombectomy using the Solitaire device. From this limited experience, mechanical thrombectomy could be used as an effective acute treatment for ischemic stroke in patients with infective endocarditis...
September 2016: Case Reports in Neurology
https://www.readbyqxmd.com/read/27919794/diagnostic-utility-of-contrast-enhanced-3d-t1-weighted-imaging-in-acute-cerebral-infarction-associated-with-graves-disease
#4
Yasufumi Gon, Manabu Sakaguchi, Naoki Oyama, Hideki Mochizuki
Graves disease is rarely complicated with cerebrovascular steno-occlusive diseases. Previous studies have suggested several hypotheses for this occurrence, including excess thyroid hormone, which stimulates the sympathetic nervous system, which in turn causes an abnormal hemodynamic response with consequent atherosclerotic changes, and antithyroid antibodies cause local vascular inflammation in patients with Graves disease. However, radiological findings of vasculitis in patients with Graves disease and cerebral infarction remain less known...
December 2, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/27917948/association-of-cortical-vein-filling-with-clot-location-and-clinical-outcomes-in-acute-ischaemic-stroke-patients
#5
Sonu Bhaskar, Andrew Bivard, Peter Stanwell, John R Attia, Mark Parsons, Michael Nilsson, Christopher Levi
Delay in cortical vein filling during the late-venous phase (delayed-LCVF) is characterized by opacification of cerebral veins despite contrast clearance from contralateral veins on dynamic computed tomography angiography (dCTA) in acute ischemic stroke (AIS) patients. The aim of the study was to investigate the associations of delayed-LCVF with clot location, reperfusion status at 24 hours, and 90-days functional outcome in AIS patients who received reperfusion therapy. A prospective cohort of AIS patients treated with intravenous thrombolysis was studied...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27917359/protective-roles-of-intra-arterial-mild-hypothermia-and-arterial-thrombolysis-in-acute-cerebral-infarction
#6
Xiaoxiang Peng, Yue Wan, Wenjun Liu, Bitang Dan, Li Lin, Zhouping Tang
OBJECTIVE: Herein, we evaluated the efficacy and safety of intra-arterial mild hypothermia in combination with arterial thrombolysis to treat acute cerebral infarction due to middle cerebral artery occlusion. METHODS: A total of 26 patients with acute middle cerebral artery occlusion were divided into a normothermia group (n = 15) and a mild hypothermia group (n = 11). The infarct volumes at 24 h and 7 days after the operation were compared between the normothermia group and the mild hypothermia group...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27916046/-a-comparative-study-of-unrelated-donor-and-matched-sibling-donor-allogeneic-hematopoietic-stem-cell-transplantation-in-children-and-adolescents-with-acquired-severe-aplastic-anemia
#7
J Zhou, Y W Fu, L J Liang, Q Wang, L J Han, Y L Zu, Yanli Zhang, X H Zhu, F K Yu, B J Fang, X D Wei, Y P Song
Objective: To evaluate the efficacy of unrelated donor allogeneic hematopoietic stem cell transplantation(URD allo-HSCT) for children and adolescents with severe aplastic anemia (SAA). Methods: Clinical data of 34 SAA children and adolescents undergoing allo-HSCT were retrospectively analyzed from October 2001 to October 2015. According to the source of donor, the patients were divided into matched sibling donor allo-HSCT group (MSD group) and unrelated donor group (URD group). The clinical outcome of SAA children and adolescents receiving URD allo-HSCT was assessed, and patients in MSD allo-HSCT group were enrolled as control at the same period...
December 1, 2016: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/27914836/perioperative-retinal-artery-occlusion-risk-factors-in-cardiac-surgery-from-the-united-states-national-inpatient-sample-1998-2013
#8
Tyler Calway, Daniel S Rubin, Heather E Moss, Charlotte E Joslin, Katharina Beckmann, Steven Roth
PURPOSE: To study the incidence and risk factors for retinal artery occlusion (RAO) in cardiac surgery. DESIGN: Retrospective study using the National Inpatient Sample (NIS). METHODS: The NIS was searched for cardiac surgery. Retinal artery occlusion was identified by International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes. Postulated risk factors based on literature review were included in multivariate logistic models...
November 30, 2016: Ophthalmology
https://www.readbyqxmd.com/read/27914131/the-role-of-pharmacomechanical-endovascular-intervention-for-iliofemoral-vein-thrombosis-compared-to-conventional-anticoagulation-therapy
#9
In Sub Kim, Won Min Jo
Although anticoagulation therapy is the primary treatment for deep vein thrombosis (DVT), it has not been associated with the rapid recanalization of the venous occlusion. Moreover, it is associated with long-term disability due to post-thrombotic syndrome (PTS). In contrast, pharmacomechanical endovascular intervention (PMI) results in more rapid clinical improvement in DVT patients, but there are few reports on its long-term outcomes. This retrospective study evaluated the clinical effectiveness of PMI compared to conventional anticoagulation therapy (ACA) for acute and subacute iliofemoral DVT...
January 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/27914011/activation-of-alpha-7-nicotinic-acetylcholine-receptor-reduces-brain-edema-in-mice-with-ischemic-stroke-and-bone-fracture
#10
Dingquan Zou, Man Luo, Zhenying Han, Lei Zhan, Wan Zhu, Shuai Kang, Chen Bao, Zhao Li, Jeffrey Nelson, Rui Zhang, Hua Su
Stroke is an important risk factor for bone fracture. We showed previously that bone fracture at the acute stage of ischemic stroke worsens, and activation of α-7 nicotinic acetylcholine receptor (α-7 nAchR) improves, stroke recovery by attenuating inflammation. We hypothesized that activation of α-7 nAchR also improves the blood-brain barrier (BBB) integrity. Permanent distal middle cerebral artery occlusion (pMCAO) was performed on C57BL/6J mice followed by tibia fracture 1 day later. Mice were treated with 0...
December 2, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27913896/mesenchymal-stem-cells-with-enos-over-expression-enhance-cardiac-repair-in-rats-with-myocardial-infarction
#11
Leilei Chen, Yuan Zhang, Liangliang Tao, Zhijian Yang, Liansheng Wang
PURPOSE: Transplantation of mesenchymal stem cells (MSCs) is a promising therapeutic option for patients with acute myocardial infarction. METHODS: We show here that the ectopic overexpression of endothelial nitric oxide synthases (eNOS), an endothelial form of NOS, could enhance the ability of MSCs in treating ischemic heart damage after the occlusion of the coronary artery. RESULTS: Adenoviral delivery of human eNOS gene into mouse bone marrow-derived MSCs (BM-MSCs) conferred resistance to oxygen glucose deprivation (OGD)-induced cell death in vitro, and elevated the bioavailability of nitric oxide when injected into the myocardium in vivo...
December 3, 2016: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/27913538/sickle-cell-disease-when-and-how-to-transfuse
#12
Jo Howard
Blood transfusion remains an important therapeutic intervention in patients with sickle cell disease (SCD), aiming to both increase the oxygen carrying capacity of blood and to reduce the complications of vaso-occlusion. Simple, manual exchange and automated exchange can be effective in reducing the acute and chronic complications of SCD, and the advantages and disadvantages of each methodology mean they all have a role in different situations. Evidence for the role of emergency transfusion in the management of the acute complications of SCD, including acute pain and acute chest syndrome, comes from observational data...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913263/experience-with-adapt-for-thrombectomy-in-distal-cerebral-artery-occlusions-causing-acute-ischemic-stroke
#13
Jan Vargas, Alex M Spiotta, Kyle Fargen, Raymond D Turner, Imran Chaudry, Aquilla Turk
BACKGROUND: Thromboembolic occlusion of distal branches in anterior and posterior circulation may produce severe clinical deficits. The ADAPT technique is a simple, fast method for achieving good angiographic and clinical outcomes using large bore catheters in large vessel occlusions. OBJECTIVE: We present our results using the ADAPT technique with distal cerebral artery occlusions. METHODS: Thirty-five patients with acute ischemic stroke with thrombus in the distal MCA, ACA, or PCA were treated with the ADAPT technique...
November 29, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27910301/minimalist-immediate-mechanical-intervention-approach-in-the-management-of-an-acute-proximal-left-anterior-descending-artery-occlusion-with-extensive-thrombus-burden-in-the-left-main-coronary-artery
#14
Laura Cetran, Frédéric Casassus, Guillermo J Tearney, Benjamin Seguy, Pierre Poustis, Pierre Coste, Edouard Gerbaud
No abstract text is available yet for this article.
February 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/27910082/impact-of-the-presence-of-chronically-occluded-coronary-artery-on-long-term-prognosis-of-patients-with-acute-st-segment-elevation-myocardial-infarction
#15
Maciej Lesiak, Monika Cugowska, Aleksander Araszkiewicz, Marek Grygier, Małgorzata Pyda, Włodzimierz Skorupski, Przemysław Mitkowski, Magdalena Łanocha, Stefan Grajek
BACKGROUND: Multivessel disease (MVD) is a significant risk factor in patients with acute ST-segment elevation myocardial infarction (STEMI). Whether the presence of chronic total occlusion (CTO) poses an additional hazard is still unknown. The objective of this study was to evaluate the impact of CTO on survival in STEMI patients. METHODS: The study group consisted of 836 STEMI patients treated with primary percutaneous coronary intervention (PCI). MVD was diagnosed in 52...
December 2, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27909732/early-vegf-inhibition-attenuates-blood-brain-barrier-disruption-in-ischemic-rat-brains-by-regulating-the-expression-of-mmps
#16
Hai-Tao Zhang, Ping Zhang, Yi Gao, Chen-Long Li, Hong-Jun Wang, Ling-Chao Chen, Yan Feng, Rui-Yan Li, Yong-Li Li, Chuan-Lu Jiang
Vascular endothelial growth factor (VEGF) inhibition has been demonstrated to be an effective strategy in preserving the integrity of the blood-brain barrier (BBB) in patients with acute ischemic stroke. Loss of the BBB is the key event associated with morbidity and mortality in these patients. However, the underlying mechanisms remain poorly understood. In the present study, the effects of VEGF inhibition and the possible mechanism that underlies acute cerebral ischemia in rats was investigated. Following the induction of transient middle cerebral artery occlusion for a 90‑min period, either an anti‑VEGF neutralizing antibody (RB‑222; 5 or 10 µg), or IgG (control), was administered by intracerebroventricular injection at 1 h following reperfusion...
November 29, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27909265/prevention-of-the-collapse-of-pial-collaterals-by-remote-ischemic-perconditioning-during-acute-ischemic-stroke
#17
Junqiang Ma, Yonglie Ma, Bin Dong, Mischa V Bandet, Ashfaq Shuaib, Ian R Winship
Collateral circulation is a key variable determining prognosis and response to recanalization therapy during acute ischemic stroke. Remote ischemic perconditioning (RIPerC) involves inducing peripheral ischemia (typically in the limbs) during stroke and may reduce perfusion deficits and brain damage due to cerebral ischemia. In this study, we directly investigated pial collateral flow augmentation due to RIPerC during distal middle cerebral artery occlusion (MCAo) in rats. Blood flow through pial collaterals between the anterior cerebral artery (ACA) and the MCA was assessed in male Sprague Dawley rats using in vivo laser speckle contrast imaging (LSCI) and two photon laser scanning microscopy (TPLSM) during distal MCAo...
December 1, 2016: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/27909202/prediction-of-blood-brain-barrier-disruption-and-intracerebral-hemorrhagic-infarction-using-arterial-spin-labeling-magnetic-resonance-imaging
#18
Takeya Niibo, Hajime Ohta, Shirou Miyata, Ichiro Ikushima, Kazuchika Yonenaga, Hideo Takeshima
BACKGROUND AND PURPOSE: Arterial spin-labeling magnetic resonance imaging is sensitive for detecting hyperemic lesions (HLs) in patients with acute ischemic stroke. We evaluated whether HLs could predict blood-brain barrier (BBB) disruption and hemorrhagic transformation (HT) in acute ischemic stroke patients. METHODS: In a retrospective study, arterial spin-labeling was performed within 6 hours of symptom onset before revascularization treatment in 25 patients with anterior circulation large vessel occlusion on baseline magnetic resonance angiography...
December 1, 2016: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/27909098/reversible-disruption-of-neuronal-mitochondria-by-ischemic-and-traumatic-injury-revealed-by-quantitative-two-photon-imaging-in-the-neocortex-of-anesthetized-mice
#19
Mikhail Kislin, Jeremy Sword, Ioulia V Fomitcheva, Deborah Croom, Evgeny Pryazhnikov, Eero Lihavainen, Dmytro Toptunov, Heikki Rauvala, Andre S Ribeiro, Leonard Khiroug, Sergei A Kirov
: Mitochondria play a variety of functional roles in cortical neurons, from metabolic support and neuroprotection to the release of cytokines that trigger apoptosis. In dendrites, mitochondrial structure is closely linked to their function, and fragmentation (fission) of the normally elongated mitochondria indicates loss of their function under such pathological conditions as stroke and brain trauma. Using in vivo two-photon microscopy in mouse brain, we quantified mitochondrial fragmentation in a full spectrum of cortical injuries ranging from severe to mild...
December 1, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27908894/contraction-of-blood-clots-is-impaired-in-acute-ischemic-stroke
#20
Valerie Tutwiler, Alina D Peshkova, Izabella A Andrianova, Dina R Khasanova, John W Weisel, Rustem I Litvinov
OBJECTIVE: Obstructive thrombi or thrombotic emboli are the pathogenic basis of ischemic stroke. In vitro blood clots and in vivo thrombi can undergo platelet-driven contraction (retraction), resulting in volume shrinkage. Clot contraction can potentially reduce vessel occlusion and improve blood flow past emboli or thrombi. The aim of this work was to examine a potential pathogenic role of clot contraction in ischemic stroke. APPROACH AND RESULTS: We used a novel automated method that enabled us to quantify time of initiation and extent and rate of clot contraction in vitro...
December 1, 2016: Arteriosclerosis, Thrombosis, and Vascular Biology
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