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Delayed cerebral

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https://www.readbyqxmd.com/read/29151273/post-treatment-with-methylene-blue-is-effective-against-delayed-encephalopathy-after-acute-carbon-monoxide-poisoning
#1
Ningjun Zhao, Pengchong Liang, Xiaoying Zhuo, Chenglei Su, Xuemei Zong, Bingnan Guo, Han Dong, Xianliang Yan, Shuqun Hu, Quanguang Zhang, Xu Tie
Delayed encephalopathy after acute carbon monoxide (CO) poisoning (DEACMP) is the most severe and clinically intractable complication that occurs following acute carbon monoxide poisoning. Unfortunately, the mechanism of DEACMP is still vague. Growing evidence indicates that delayed cerebral damage following CO poisoning is related to oxidative stress, abnormal neuro-inflammation, apoptosis and immune-mediated injury. Our recent report indicated that methylene blue (MB) may be a promising therapeutic agent in the prevention of neuronal cell death and cognitive deficits following transient global cerebral ischaemia (GCI)...
November 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29150648/shedding-light-on-the-neonatal-brain-probing-cerebral-hemodynamics-by-diffuse-optical-spectroscopic-methods
#2
Parisa Farzam, Erin M Buckley, Pei-Yi Lin, Katherine Hagan, P Ellen Grant, Terrie Eleanor Inder, Stefan A Carp, Maria Angela Franceschini
Investigating the cerebral physiology of healthy term newborns' brains is important for better understanding perinatal brain injuries, of which the most common etiologies are hypoxia and ischemia. Hence, cerebral blood flow and cerebral oxygenation are important biomarkers of brain health. In this study, we employed a hybrid diffuse optical system consisting of diffuse correlation spectroscopy (DCS) and frequency-domain near infrared spectroscopy (FDNIRS) to measure hemoglobin concentration, oxygen saturation, and indices of cerebral blood flow and metabolism...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29146829/is-bridging-therapy-still-required-in-stroke-due-to-carotid-artery-terminus-occlusions
#3
Romain Bourcier, Pierre-Louis Alexandre, François Eugène, Béatrice Delasalle-Guyomarch, Benoit Guillon, Basile Kerleroux, Suzana Saleme, Gaultier Marnat, Samy Boucebci, Mahmood Mirza, Jean-Christophe Ferré, Chrysanthi Papagiannaki, Hubert Desal
INTRODUCTION: Studies comparing endovascular stroke treatment using mechanical thrombectomy (MT) with or without prior IV tissue plasminogen activator (tPa) have included only 30% of internal carotid artery terminus occlusions (ICA-O), a known predictor of recanalization failure with IV tPa. OBJECTIVE: To carry out a retrospective multicenter analysis of prospectively collected data of consecutive patients to investigate the impact of intravenous thrombolysis on ICA-O by comparing patients treated with MT alone or bridging therapy (BT)...
November 16, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29146215/-acute-methotrexate-related-neurotoxicity-and-pseudo-stroke-syndrome
#4
V Deneux, N Leboucq, L Saumet, S Haouy, T Akbaraly, N Sirvent
Treatment of acute lymphoblastic leukemia requires high-dose systemic and/or intrathecal methotrexate to prevent and/or treat central nervous system disorders. Acute neurotoxicity of methotrexate, of unknown etiopathogenesis, is characterized by the polymorphism of clinical manifestations, responsible for a potentially harmful diagnostic delay in these immunosuppressed patients. We describe five episodes of transient acute leukoencephalopathy mimicking a stroke, reported in the literature as "pseudo-stroke syndrome"...
November 13, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/29144840/feasibility-of-using-the-general-movements-assessment-of-infants-in-the-united-states
#5
Eileen Ricci, Christa Einspieler, Alexa K Craig
AIMS: To pilot the practicality of administering the Prechtl General Movements Assessment of infants (GMA) in the Neonatal Intensive Care Unit (NICU) setting and at home to infants at risk for developing cerebral palsy (CP). Additional aims included assessing inter-rater reliability and comparing GMA predictions to AIMS motor assessment at 12 months. METHODS: 12 "at risk" infants were recruited by convenience sample. Video recordings were obtained in the NICU and provided by parents after discharge...
November 16, 2017: Physical & Occupational Therapy in Pediatrics
https://www.readbyqxmd.com/read/29142633/risk-factors-of-delayed-surgical-intervention-after-conservatively-treated-acute-traumatic-subdural-hematoma
#6
Hyungjoo Kwon, Kyu-Sun Choi, Hyeong-Joong Yi, Hyoung-Joon Chun, Young-Jun Lee, Dong-Won Kim
Objective: Acute subdural hematoma (ASDH) is generally considered a condition that should be managed surgically. However, some patients initially receive conservative treatment, a subset of whom require surgical intervention later. This study aimed to evaluate the predictors of delayed surgical intervention in ASDH patients who are initially managed conservatively. Methods: From January 2007 to December 2015, 842 patients diagnosed with ASDH were treated at our institution...
November 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/29141840/cerebral-oxygenation-measurements-by-magnetic-resonance-imaging-in-fetuses-with-and-without-heart-defects
#7
Mette H Lauridsen, Niels Uldbjerg, Tine B Henriksen, Olav B Petersen, Brian Stausbøl-Grøn, Niels B Matthiesen, David A Peters, Steffen Ringgaard, Vibeke E Hjortdal
BACKGROUND: Children with major congenital heart defects are risking impaired cerebral growth, delayed cerebral maturation, and neurodevelopmental disorders. We aimed to compare the cerebral tissue oxygenation of fetuses with major heart defects to that of fetuses without heart defects as estimated by the magnetic resonance imaging modality T2*. T2* is low in areas with high concentrations of deoxyhemoglobin. METHODS AND RESULTS: At gestational age mean 32 weeks (early) and mean 37 weeks (late), we compared the fetal cerebral T2* in 28 fetuses without heart defects to that of 15 fetuses with major heart defects: transposition of the great arteries (n=7), coarctation of the aorta/hypoplastic aortic arch (n=5), tetralogy of Fallot (n=1), hypoplastic right heart (n=1), and common arterial trunk (n=1)...
November 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29137029/neural-reorganization-between-injured-cingula-and-the-brainstem-cholinergic-nuclei-in-a-patient-with-cerebral-concussion-a-case-report
#8
Sung Ho Jang, Young Hyeon Kwon
RATIONALE: We report on a patient who showed neural reorganization between injured cingula and the brainstem cholinergic nuclei following cerebral concussion. PATIENT CONCERNS: The main concern of the patient is memory impairment. DIAGNOSES: Cerebral concussion. OUTCOMES: When she visited our hospital at 2 years after onset, cognitive function was evaluated using 2 scales; the Wechsler Intelligence Scale, and the Seoul neuropsychological screening battery: total IQ 97, verbal immediate recall 5...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29134927/cerebral-amyloid-angiopathy-associated-with-inflammation-a-systematic-review-of-clinical-and-imaging-features-and-outcome
#9
Andrej Corovic, Siobhan Kelly, Hugh S Markus
Background Cerebral amyloid angiopathy associated with inflammation is an increasingly recognized condition, characterized by an inflammatory response to the vascular deposits of β-amyloid within the brain that are the hallmark of cerebral amyloid angiopathy. Two main patterns of this inflammatory response have been identified to date: one involving a perivascular inflammatory cell infiltrate (cerebral amyloid angiopathy-related inflammation); the other a transmural vasculitic process (A-beta related angiitis)...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/29123909/basi-parallel-anatomical-scanning-magnetic-resonance-imaging-for-the-diagnosis-of-reversible-cerebral-vasoconstriction-syndrome-of-the-basilar-artery-a-case-report
#10
Akitaka Yamamoto, Yukinari Omori, Akihiro Shindo, Hiroshi Imai, Hidenori Suzuki
Case: Reversible cerebral vasoconstriction syndrome (RCVS) is an increasingly recognized and important cause of thunderclap headache. Delays in diagnosis may cause deterioration of symptoms and concomitant unnecessary investigations. However, the diagnosis of RCVS in the acute stage remains difficult.A 41-year-old man was admitted to the emergency department for severe, recurrent occipital headaches. The results of initial computed tomography and magnetic resonance imaging (MRI) of the brain and cerebrospinal fluid analysis were normal...
October 2017: Acute Medicine & Surgery
https://www.readbyqxmd.com/read/29122957/diminished-dynamic-cerebral-autoregulatory-capacity-with-forced-oscillations-in-mean-arterial-pressure-with-elevated-cardiorespiratory-fitness
#11
Lawrence Labrecque, Kevan Rahimaly, Sarah Imhoff, Myriam Paquette, Olivier Le Blanc, Simon Malenfant, Samuel J E Lucas, Damian M Bailey, Jonathan D Smirl, Patrice Brassard
The effect that cardiorespiratory fitness has on the dynamic cerebral autoregulatory capacity during changes in mean arterial pressure (MAP) remains equivocal. Using a multiple-metrics approach, challenging MAP across the spectrum of physiological extremes (i.e., spontaneous through forced MAP oscillations), we characterized dynamic cerebral autoregulatory capacity in 19 male endurance athletes and eight controls via three methods: (1) onset of regulation (i.e., time delay before an increase in middle cerebral artery (MCA) conductance [MCA blood velocity (MCAv)/MAP] and rate of regulation, after transient hypotension induced by sit-to-stand, and transfer function analysis (TFA) of MAP and MCAv responses during (2) spontaneous and (3) forced oscillations (5-min of squat-stand maneuvers performed at 0...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29119370/vasoconstriction-and-impairment-of-neurovascular-coupling-after-subarachnoid-hemorrhage-a-descriptive-analysis-of-retinal-changes
#12
Catharina Conzen, Walid Albanna, Miriam Weiss, David Kürten, Walthard Vilser, Konstantin Kotliar, Charlotte Zäske, Hans Clusmann, Gerrit Alexander Schubert
Impaired cerebral autoregulation and neurovascular coupling (NVC) contribute to delayed cerebral ischemia after subarachnoid hemorrhage (SAH). Retinal vessel analysis (RVA) allows non-invasive assessment of vessel dimension and NVC hereby demonstrating a predictive value in the context of various neurovascular diseases. Using RVA as a translational approach, we aimed to assess the retinal vessels in patients with SAH. RVA was performed prospectively in 24 patients with acute SAH (group A: day 5-14), in 11 patients 3 months after ictus (group B: day 90 ± 35), and in 35 age-matched healthy controls (group C)...
November 8, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/29118800/septoplasty-scepter-balloon-angioplasty-for-vasospasm-after-aneurysmal-subarachnoid-hemorrhage
#13
Bradley A Gross, Daniel A Tonetti, Gregory M Weiner, David M Panczykowski, William J Ares, Cynthia L Kenmuir, Ashutosh P Jadhav, Tudor G Jovin, Brian T Jankowitz
Introduction: Balloon angioplasty can be a requisite approach for the treatment of symptomatic and/or severe vasospasm. Dual-lumen microcatheter balloons have multiple potential advantages for this indication including accommodating a 0.014-inch wire and the potential to deliver superselective vasodilators directly via the microcatheter prior to angioplasty. Methods: The authors reviewed a 3-year institutional experience with the Scepter XC balloon (Microvention, Tustin, CA, USA) in the treatment of postaneurysmal subarachnoid hemorrhage vasospasm, focusing on treatment methods, angiographic, and clinical results...
October 2017: Interventional Neurology
https://www.readbyqxmd.com/read/29118492/association-of-ocular-findings-and-outcome-in-cerebral-venous-thrombosis
#14
Samira Yadegari, Alireza Keshtkar Jafari, Elham Ashrafi
BACKGROUND: Cerebral venous thrombosis (CVT) is a potentially life-threatening underdiagnosed disease. Headache is a common but nonspecific finding in CVT. Other features such as ocular finding can assist to correct diagnosis, but their frequency in CVT has not been previously evaluated. The aim of this study is to evaluate the ocular symptoms and signs in CVT and their association with outcome. METHODS: The demographic, clinical, laboratory, radiological, and outcome data were collected and analyzed from patients referred to a tertiary hospital during 6 years...
September 2017: Oman Journal of Ophthalmology
https://www.readbyqxmd.com/read/29117709/detecting-perfusion-pattern-based-on-the-background-low-frequency-fluctuation-in-resting-state-functional-mri-data-and-its-influence-on-resting-state-networks-an-iterative-post-processing-approach
#15
Tianyi Qian, Davide Zanchi, Cristelle Rodriguez, Marine Ackermann, Panteleimon Giannakopoulos, Sven Haller
INTRODUCTION: RS-fMRI is based on the assumption that the vascular response and the blood oxygenation level dependent (BOLD) response are homogenous across the entire brain. However, this a priori hypothesis is not consistent with the well-known variability of cerebral vascular territories. In order to explore whether the RS networks are influenced by varied vascular speed in different vascular territories, we assessed the time-shift maps that give an estimate of the local timing of the vascular response and check whether local differences in this timing have an impact on the estimates of RS networks...
November 8, 2017: Brain Connectivity
https://www.readbyqxmd.com/read/29115698/grading-scales-in-subarachnoid-hemorrhage-many-options-but-do-we-have-a-winner
#16
EDITORIAL
Venkatakrishna Rajajee
Grading the severity of Aneurysmal Subarachnoid Hemorrhage (aSAH) is essential, for several reasons- to provide a reliable prognosis, establish comparability across groups in research studies and quality assessments, follow the progress of an individual patient, and guide decisions on management. The Hunt-Hess and World Federation of Neurological Surgeons (WFNS) scales are clinical scales, with a focus on symptoms and signs thought to reflect the extent of primary brain injury and, therefore, functional outcome...
November 8, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/29115588/limb-remote-ischemic-post%C3%A2-conditioning-reduces-injury-and-improves-long%C3%A2-term-behavioral-recovery-in-rats-following-subarachnoid-hemorrhage-possible-involvement-of-the-autophagic-process
#17
Xiang Hu, Tao Lv, Shao-Feng Yang, Xiao-Hua Zhang, Yi-Feng Miao
Hemorrhage‑related neurologic injury is a primary cause of disability and mortality following subarachnoid hemorrhage (SAH). The aim of the present study was to investigate the potential neuroprotective effect and the possible role of autophagy in limb remote ischemic post‑conditioning (RIPostC) using an endovascular puncture rat model of SAH. RIPostC was induced by three cycles of occlusion (10 min) and release (10 min) in the bilateral femoral artery using an aneurysm clip. Early RIPostC began immediately following SAH, delayed RIPostC began following a 30 min delay and the repeated RIPostC group underwent the protocol every day for 3 days...
October 24, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29111992/cardiovascular-and-cerebral-hemodynamics-in-asymptomatic-healthy-subjects-with-without-abnormal-head-up-tilt-test-versus-recurrent-fainters
#18
Antonio González-Hermosillo, Manuel Sierra-Beltrán, Ulises López-Peña, Andrei Kostin, Guadalupe Hernández-Pacheco, Claudia Lerma
PURPOSE: The aim of this study was to compare hemodynamic and autonomic responses during head-up tilt test (HUTT) between healthy volunteers and patients with a history of fainting and confirmed vasovagal syncope. We hypothesize that the autonomic and hemodynamic physiologic responses remain intact during orthostatic stress in people without previous fainting and negative HUTT, but deteriorate similarly in patients with recurrent vasovagal syncope and in asymptomatic healthy subjects who develop a vasovagal response during HUTT...
October 27, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29109695/the-role-of-thromboinflammation-in-delayed-cerebral-ischemia-after-subarachnoid-hemorrhage
#19
REVIEW
Devin W McBride, Spiros L Blackburn, Kumar T Peeyush, Kanako Matsumura, John H Zhang
Delayed cerebral ischemia (DCI) is a major determinant of patient outcome following aneurysmal subarachnoid hemorrhage. Although the exact mechanisms leading to DCI are not fully known, inflammation, cerebral vasospasm, and microthrombi may all function together to mediate the onset of DCI. Indeed, inflammation is tightly linked with activation of coagulation and microthrombi formation. Thromboinflammation is the intersection at which inflammation and thrombosis regulate one another in a feedforward manner, potentiating the formation of thrombi and pro-inflammatory signaling...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29109381/epileptogenic-brain-malformations-and-mutations-in-tubulin-genes-a-case-report-and-review-of-the-literature
#20
Annalisa Mencarelli, Paolo Prontera, Gabriela Stangoni, Elisabetta Mencaroni, Nicola Principi, Susanna Esposito
Malformations of the cerebral cortex are an important cause of developmental disabilities and epilepsy. Neurological disorders caused by abnormal neuronal migration have been observed to occur with mutations in tubulin genes. The α- and β-tubulin genes encode cytoskeletal proteins, which play a role in the developing brain. TUBA1A mutations are associated with a wide spectrum of neurological problems, which are characterized by peculiar clinical details and neuroradiologic patterns. This manuscript describes the case of a nine-year-old girl with microcephaly, mild facial dysmorphisms, epileptic seizures, and severe developmental delay, with a de novo heterozygous c...
October 29, 2017: International Journal of Molecular Sciences
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