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intracranial arteriovenous malformations/hypoxia
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13 resultater
Hypoxia-inducible factor and vascular endothelial growth factor are expressed more frequently in embolized than in nonembolized cerebral arteriovenous malformations.
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OBJECTIVE
In previous studies, we documented a marked neoangiogenesis and endothelial proliferation in cerebral arteriovenous malformations (AVMs) that were embolized before surgery compared with those that were not embolized. We hypothesized that embolization caused a local hypoxia that promotes
Expression of thioredoxin-1 and hypoxia inducible factor-1α in cerebral arteriovenous malformations: Possible role of redox regulatory factor in neoangiogenic property.
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BACKGROUND
Recently it is reported that proliferative activity remains in vascular walls of cerebral arteriovenous malformations (AVMs). These reports indicate that endothelial cells in AVMs have the neoangiogenic property. In this study, we assess the role of thioredoxin-1 (Trx-1) and
Hypoxia inducible factor-1alpha and expression of vascular endothelial growth factor and its receptors in cerebral arteriovenous malformations.
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BACKGROUND
Vascular endothelial growth factor (VEGF) and its tyrosine kinase family of receptors (VEGFR) (Flt-1, Flk-1, Flt-4) have been implicated in vascular angiogenesis and remodelling in cerebral arteriovenous malformations (CAVM). In this study, we investigate the role of hypoxia inducible
An efficient and non-enzymatic method for isolation and culture of endothelial cells from the nidus of human cerebral arteriovenous malformations.
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In this report, we describe an efficient and non-enzymatic method for isolating and culturing endothelial cells (ECs) from the nidus of surgically resected arteriovenous malformation (AVM) specimens. These cultured cells possessed typical phenotypic markers (i.e. von Willebrand factor and CD34), as
Role of Multimodal Cerebral Oximetry Monitoring in the Anesthetic Management of a Patient With High-Grade Intracranial Arteriovenous Malformation: A Case Report
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Near-infrared spectroscopy (NIRS) is a noninvasive monitor of regional brain tissue oxygenation, and jugular venous oximetry (SjvO2) is a monitor of global cerebral oxygenation. We report the role of intraoperative multimodal monitoring of cerebral oxygenation in the anesthetic management of a
A Case Report of Onyx Pulmonary Arterial Embolism Contributing to Hypoxemia During Awake Craniotomy for Arteriovenous Malformation Resection.
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A healthy 26-year-old man with cerebral arteriovenous malformation underwent staged endovascular embolization with Onyx followed by awake craniotomy for resection. The perioperative course was complicated by tachycardia and severe intraoperative hypoxemia requiring significant oxygen
Pulmonary arteriovenous malformation in a pediatric patient with epistaxis and hypoxemia
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Hereditary hemorrhagic telangiectasia (HHT; also known as Osler-Weber-Rendu syndrome) is an inherited vascular disorder with a spectrum of clinical manifestations depending on lesion distribution. Epistaxis, mucocutaneous telangiectasia, and gastrointestinal bleeding are most common. Patients with
Embolization-induced angiogenesis in cerebral arteriovenous malformations.
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Endovascular occlusion of cerebral arteriovenous malformations (AVM) is often utilized as adjunctive therapy in combination with radiosurgery or microsurgery. Evidence supports that partial occlusion of AVM via endovascular embolization leads to increased angiogenesis. This phenomenon may be a
Treatment-induced neoangiogenesis in cerebral arteriovenous malformations.
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We investigated the angiogenetic and proliferative activity of the endothelium of 30 consecutive surgical cases of AVM treated at our institution by immunohistochemical detection of the PCNA, MIB-1, Flk-1 and VEGF antibodies. Endothelial positive immunostaining was observed in 87% of the cases for
Arteriovenous malformation of vein of Galen as a rare non-hypoxic cause of changes in fetal heart rate pattern during labor.
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The aim of this case report is to describe a rare non-hypoxic cause of pathological changes in fetal heart rate pattern during labor, and to determine management, including a description of important prenatal aspects when pathologic cardiotocographic recording is performed during labor. A fetus with
Time course of spontaneous recovery of subacute fat embolism syndrome--a case report.
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Pulmonary embolism is not uncommonly encountered in orthopedic patients with high risks, such as prolonged immobility, obesity, past or family history of thromboembolism, pelvic and long bone fractures. Here we report a young male patient with a residual cerebral arteriovenous malformation
[Spinal abscess in a patient with hereditary hemorrhagic telangiectasia].
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Rendu-Osler-Weber syndrome is an autosomal dominant disorder characterized by multiple skin and mucosal telangiectasis and multiorgan arteriovenous malformations. Neurological manifestations may occur because of cerebral arteriovenous malformations, intracranial hemorrhage, and most commonly by
Intraoperative monitoring of cerebral oximetry and depth of anaesthesia during neuroanesthesia procedures.
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OBJECTIVE
This review reports recent evidence on intraoperative monitoring of cerebral oximetry and depth of anaesthesia during neuroanaesthesia procedures.
RESULTS
The clinical benefits of intraoperative monitoring with cerebral oximetry [near infrared spectroscopy (NIRS) and brain tissue
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