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https://www.readbyqxmd.com/read/29792955/fisetin-alleviates-oxidative-stress-after-traumatic-brain-injury-via-the-nrf2-are-pathway
#1
Li Zhang, Handong Wang, Yali Zhou, Yihao Zhu, Maoxin Fei
Fisetin, a natural flavonoid, has neuroprotection properties in many brain injury models. However, its role in traumatic brain injury (TBI) has not been fully explained. In the present study, we aimed to explore the neuroprotective effects of fisetin in a mouse model of TBI. We found that fisetin improved neurological function, reduced cerebral edema, attenuated brain lesion and ameliorated blood-brain barrier (BBB) disruption after TBI. Moreover, the up-regulation of malondialdehyde (MDA) and the activity of glutathione peroxidase (GPx) were reversed by fisetin treatment...
May 21, 2018: Neurochemistry International
https://www.readbyqxmd.com/read/29789918/recent-experience-and-follow-up-after-surgical-closure-of-secundum-atrial-septal-defect-in-120-children
#2
Geoffroy de Beco, Natasha Mambour, Christophe Vô, Laetitia Vanhoutte, Stéphane Moniotte, Alain Poncelet, Thierry Sluysmans
While percutaneous catheter closure proves an effective treatment for secundum atrial septal defect (ASD2), some child patients require surgical closure. We assessed the risks associated with isolated surgical ASD2 closure by reviewing the outcomes of 120 children operated on between 1999 and 2011 (mean age 4.6 ± 3.9 years, mean weight 17 ± 12 kg). Direct sutures were performed in 4% and patch closures in 96%. The mean cardiopulmonary bypass duration was 38 ± 14 min, aortic cross-clamp time 19 ± 9 min, intensive care unit length of stay 1...
May 22, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29789639/fludarabine-and-neurotoxicity-in-engineered-t-cell-therapy
#3
Kate L Lowe, Crystal L Mackall, Elliot Norry, Rafael Amado, Bent K Jakobsen, Gwendolyn Binder
Adoptive T-cell therapy, incorporating engineered T cell receptors (TCRs) or chimeric antigen receptors (CARs), target tumor antigens with high affinity and specificity. To increase the potency of adoptively transferred T cells, patients are conditioned with lymphodepleting chemotherapy regimens prior to adoptive T-cell transfer (ACT), and data suggest that fludarabine is an important component of an effective regimen. In a recent clinical trial using CAR-T cells engineered to target the CD19 B-cell antigen to treat acute lymphoblastic leukemia, JCAR-015 (NCT02535364), two patient deaths due to cerebral edema led to trial suspension...
May 7, 2018: Gene Therapy
https://www.readbyqxmd.com/read/29789393/long-term-outcomes-in-patients-aged-%C3%A2-70-years-with-intravenous-glyburide-from-the-phase-ii-games-rp-study-of-large-hemispheric-infarction-an-exploratory-analysis
#4
Kevin N Sheth, Nils H Petersen, Ken Cheung, Jordan J Elm, Holly E Hinson, Bradley J Molyneaux, Lauren A Beslow, Gordon K Sze, J Marc Simard, W Taylor Kimberly
BACKGROUND AND PURPOSE: We aimed to determine whether subjects aged ≤70 years who were treated with intravenous glyburide (RP-1127; BIIB093; glibenclamide) would have better long-term outcomes than those who received placebo. METHODS: GAMES-RP (Glyburide Advantage in Malignant Edema and Stroke-Remedy Pharmaceuticals) was a prospective, double-blind, randomized, placebo-controlled phase 2 clinical trial. Eighty-six participants, aged 18 to 80 years, who presented to 18 centers with large hemispheric infarction (baseline diffusion-weighted imaging volumes, 82-300 cm3 ) randomized within 10 hours of symptom onset were enrolled...
May 22, 2018: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29788497/a-study-of-the-focal-adhesion-kinase-inhibitor-gsk2256098-in-patients-with-recurrent-glioblastoma-with-evaluation-of-tumor-penetration-of-11c-gsk2256098
#5
Nicholas F Brown, Matthew Williams, Hendrik-Tobias Arkenau, Ronald A Fleming, Jerry Tolson, Li Yan, Jianping Zhang, Lisa Swartz, Rajendra Singh, Kurt R Auger, Laurie Lenox, David Cox, Yvonne Lewis, Christophe Plisson, Graham Searle, Azeem Saleem, Sarah Blagden, Paul Mulholland
Background: GSK2256098 is a novel oral focal adhesion kinase inhibitor. Preclinical studies demonstrate growth inhibition in glioblastoma cell lines. However, rodent studies indicate limited blood-brain barrier penetration. In this expansion cohort within a phase I study, the safety, tolerability, pharmacokinetics and clinical activity of GSK2256098 were evaluated in patients with recurrent glioblastoma. Biodistribution and kinetics of [11C]GSK2256098 were assessed in a sub-study using positron-emission tomography (PET)...
May 17, 2018: Neuro-oncology
https://www.readbyqxmd.com/read/29786833/assessment-of-cerebral-perfusion-and-edema-in-preeclampsia-with-intravoxel-incoherent-motion-mri
#6
Maria Nelander, Daniel Hannsberger, Inger Sundström-Poromaa, Lina Bergman, Jan Weis, Helena Åkerud, Johan Wikström, Anna-Karin Wikström
INTRODUCTION: Cerebral complications are the main reasons for morbidity and mortality in preeclampsia and eclampsia. Still we do not know if the pathophysiology entails hypo- or hyperperfusion of the brain, or how and when edema emerges, due to the difficulty to examine the cerebral circulation. MATERIAL AND METHODS: We have used a non-invasive diffusion weighted magnetic resonance imaging (MRI) technique, intravoxel incoherent motion, to study cerebral perfusion on the capillary level and cerebral edema in women with preeclampsia (n=30), normal pregnancy (n=32) and non-pregnant women (n=16)...
May 22, 2018: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/29785667/cerebral-autoregulation-in-stroke
#7
REVIEW
Pedro Castro, Elsa Azevedo, Farzaneh Sorond
PURPOSE OF REVIEW: Cerebral autoregulation (CA) is a mechanism that maintains cerebral blood flow constant despite fluctuations in systemic arterial blood pressure. This review will focus on recent studies that measured CA non-invasively in acute cerebrovascular events, a feature unique to the transcranial Doppler ultrasound. We will summarize the rationale for CA assessment in acute cerebrovascular disorders and specifically evaluate the existing data on the value of CA measures in relation to clinical severity, guiding management decisions, and prognostication...
May 21, 2018: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/29785469/early-detection-of-cerebral-infarction-after-focal-ischemia-using-a-new-mri-indicator
#8
Yukako Nakajo, Qiang Zhao, Jun-Ichiro Enmi, Hidehiro Iida, Jun C Takahashi, Hiroharu Kataoka, Keiko Yamato, Hiroji Yanamoto
Prolongation of the T2 relaxation time, an increase in T2-weighted signal intensity (T2-SI), and a decrease in the apparent diffusion coefficient (ADC) calculated from diffusion-weighted images (DWI) on magnetic resonance imaging (MRI) are conventional indicators of the vasogenic (interstitial) or cytotoxic (cellular) cerebral edema that develops after ischemic stroke. However, these parameters obtained on stroke imaging have not given us a precise threshold at which we can determine the viability or vulnerability of the tissue, allowing us to decide on an intervention that will help reversible tissue in the acute phase...
May 21, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29782624/the-underlying-mechanisms-involved-in-the-protective-effects-of-ischemic-postconditioning
#9
Rong Xie, Jinquan Li, Heng Zhao
Cerebral ischemic postconditioning (PostC) refers to a series of brief ischemia and reperfusion (I/R) cycles applied at the onset of reperfusion following an ischemic event. PostC has been shown to have neuroprotective effects, and represents a promising clinical strategy against cerebral ischemia-reperfusion injury. Many studies have indicated that cerebral PostC can effectively reduce neural cell death, cerebral edema and infarct size, improve cerebral circulation, and relieve inflammation, apoptosis and oxidative stress...
2018: Conditioning medicine
https://www.readbyqxmd.com/read/29781111/assessment-of-hemodynamic-alterations-in-cerebral-veins-in-patients-with-intracerebral-hemorrhage-using-duplex-color-coded-sonography
#10
Zhan-Qiang Jin, Hao Feng, Wen He, Xing-Quan Zhao
OBJECTIVES: To investigate the contributions of hemodynamic alterations in cerebral veins to the prognosis of patients with primary intracerebral hemorrhage (ICH). METHODS: Duplex color-coded sonography was performed on 87 ICH patients between July 2016 and October 2017. The time-averaged peak velocity, the time-averaged mean velocity (TAMV), the blood flow volume (BFV) of bilateral internal jugular veins (IJVs) and vertebral veins (VVs), and the mean velocities of bilateral basal veins of Rosenthal, straight sinus, and bilateral transverse sinuses were calculated to understand the relationship of hemodynamic data with prognosis in patients with ICH...
May 21, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29778535/lysophosphatidic-acid-receptor-lpa-6-regulates-endothelial-blood-brain-barrier-function-implication-of-hepatic-encephalopathy
#11
Kayo Masago, Yasuyuki Kihara, Keisuke Yanagida, Fumie Hamano, Shinsuke Nakagawa, Masami Niwa, Takao Shimizu
Cerebral edema is a life-threatening neurological condition characterized by brain swelling due to accumulation of excess fluid both intracellularly and extracellularly. Fulminant hepatic failure (FHF) develops cerebral edema by disrupting blood brain barrier (BBB). However, the mechanisms by which mediator induces brain edema in FHF remain to be elucidated. Here, we assessed a linkage between brain edema and lysophosphatidic acid (LPA) signaling by utilizing an animal model of FHF and in vitro BBB model. Azoxymethane-treated mice developed FHF and hepatic encephalopathy, associated with higher autotaxin (ATX) activities in serum than controls...
May 17, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29777902/chemical-characterization-and-cerebroprotective-effect-of-methanolic-root-extract-of-colebrookea-oppositifolia-in-rats
#12
Gollapalle Lakshminarayanashastry Viswanatha, Marikunte V Venkataranganna, Nunna Bheema Lingeswara Prasad, Shylaja Hanumanthappa
ETHNOPHARMACOLOGICAL RELEVANCE: Colebrookea oppositifolia Smith is one of the extensively used plants to treat neurological conditions such as epilepsy by the various ethnic communities in sub-Himalayan regions of India such as Bhoxa, Tharu and nomadic Gujjars. AIM OF THE STUDY: This study was conducted to evaluate the cerebroprotective effect of C. oppositifolia methanolic root (MeCO) extract in Wistar rats. MATERIALS AND METHODS: The MeCO was characterized for total phenolic content and later subjected for detailed liquid chromatography-mass spectrometry analysis...
May 16, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29775701/lithium-posttreatment-alleviates-blood-brain-barrier-injury-after-intracerebral-hemorrhage-in-rats
#13
Weishan Li, Rui Li, Sha Zhao, Cheng Jiang, Zhen Liu, Xiaobo Tang
Vasogenic cerebral edema formation after blood brain barrier (BBB) damage aggravates the devastating consequences of intracerebral hemorrhage (ICH). The present study aims to probe into a therapeutic method on BBB preservation after ICH with a glycogen synthase kinase-3β (GSK-3β) inhibitor, lithium. Intrastriatal infusion of semicoagulated autologous whole blood or sham surgery was performed on male Sprague-Dawley (SD) rats (n = 208).Experimental animals received administration of 4,6-disubstitutedpyrrolo-pyrimidine (TWS119), lithium alone or in combination with a phosphatidylinositol 3-kinase inhibitor, wortmannin, after ICH...
May 15, 2018: Neuroscience
https://www.readbyqxmd.com/read/29771702/pathogenesis-of-cerebral-edema-in-patients-with-acute-renal-and-liver-failure-and-the-role-of-the-nephrologist-in-the-management
#14
Tamim Hamdi
PURPOSE OF REVIEW: Acute liver failure (ALF) is a severe and complex illness and one of the most daunting conditions managed in the ICU. Because the renal care is intertwined with multiple disciplines, the aim of this review is to examine the multifactorial pathogenesis of cerebral edema in ALF, covering basic established facts as well as recent advances in our understanding of this condition. RECENT FINDINGS: Acetaminophen remains the most common cause of ALF in the United States and many European countries...
May 15, 2018: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/29771433/microrna-23a-3p-promotes-the-perihematomal-edema-formation-after-intracerebral-hemorrhage-via-zo-1
#15
Y-L Hu, H Wang, Q Huang, G Wang, H-B Zhang
OBJECTIVE: To explore the relationship between microRNA-23a-3p expression and perihematomal edema (PHE) in patients with acute intracerebral hemorrhage (ICH) and its underlying mechanism. PATIENTS AND METHODS: Clinical data and blood samples on the 3rd day after ICH onset were collected. Head CT was performed in each subject when admitted. Serum expressions of microRNAs were detected by quantitative real-time PCR (qRT-PCR). The relationship between hematoma volume and perihematomal edema was analyzed by correlation analysis...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29770189/hydrogen-inhalation-improves-mouse-neurological-outcomes-after-cerebral-ischemia-reperfusion-independent-of-anti-necroptosis
#16
Jun-Long Huang, Wen-Wu Liu, Xue-Jun Sun
This study aimed to investigate the role of necroptosis in the neuroprotection of hydrogen in a mouse model of cerebral ischemia/reperfusion (I/R) injury. C57BL mice were randomly divided into sham group, I/R group, hydrogen/oxygen group (HO), nitrogen/oxygen group (NO). Middle cerebral artery occlusion (MCAO) for 1 hour followed by reperfusion was introduced to animals which were allowed to inhale 66.7% hydrogen/33.3% oxygen for 90 minutes since the beginning of reperfusion. Mice in NO group inhaled 66.7% nitrogen/33...
January 2018: Medical Gas Research
https://www.readbyqxmd.com/read/29770166/free-radical-damage-in-ischemia-reperfusion-injury-an-obstacle-in-acute-ischemic-stroke-after-revascularization-therapy
#17
REVIEW
Ming-Shuo Sun, Hang Jin, Xin Sun, Shuo Huang, Fu-Liang Zhang, Zhen-Ni Guo, Yi Yang
Acute ischemic stroke is a common cause of morbidity and mortality worldwide. Thrombolysis with recombinant tissue plasminogen activator and endovascular thrombectomy are the main revascularization therapies for acute ischemic stroke. However, ischemia-reperfusion injury after revascularization therapy can result in worsening outcomes. Among all possible pathological mechanisms of ischemia-reperfusion injury, free radical damage (mainly oxidative/nitrosative stress injury) has been found to play a key role in the process...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29768967/interleukin-1-receptor-1-deletion-in-focal-and-diffuse-experimental-traumatic-brain-injury-in-mice
#18
Joon Yong Chung, Nicolas Krapp, Limin Wu, Sevda Lule, Lauren McAllister, William Edmiston Iii, Samantha Martin, Emily Levy, Tanya Songtachalert, John Sherwood, Erin Buckley, Bharat Sanders, Saef Izzy, Suzanne Hickman, Shuzhen Guo, Josephine Lok, Joseph El Khoury, Eng Lo, David Kaplan, Michael Whalen
Important differences in the biology of focal and diffuse traumatic brain injury (TBI) subtypes may result in unique pathophysiological responses to shared molecular mechanisms. Interleukin-1 (IL-1) signaling has been tested as a potential therapeutic target in preclinical models of cerebral contusion and diffuse TBI, and in a phase II clinical trial, but no published studies have examined IL-1 signaling in an impact/acceleration closed head injury (CHI) model. We hypothesized that genetic deletion of IL-1 receptor-1 (IL-1R1 KO) would be beneficial in focal (contusion) and CHI in mice...
May 17, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29767275/aldh2-protects-against-ischemic-stroke-in-rats-by-facilitating-4-hne-clearance-and-aqp4-down-regulation
#19
Yan Li, Si-Liang Liu, Si-Hua Qi
Aldehyde dehydrogenase 2 (ALDH2) is a new therapeutic target in the central nervous system. However, the association between ALDH2 and brain edema following ischemic stroke (IS) remains unclear. The present study was investigated to whether active ALDH2 can attenuate brain edema by using a rat model of IS, with the aim of clarifying the underlying mechanisms involved. Rats were administered the ALDH2 agonist Alda-1, vehicle or the ALDH2 inhibitor cyanamide (CYA) 15 min prior to a 1.5 h middle cerebral artery occlusion (MCAO) surgery...
May 16, 2018: Neurochemical Research
https://www.readbyqxmd.com/read/29763853/text-mining-and-network-analysis-to-find-functional-associations-of-genes-in-high-altitude-diseases
#20
Balu Bhasuran, Devika Subramanian, Jeyakumar Natarajan
BACKGROUND AND OBJECTIVES: Travel to elevations above 2500 m is associated with the risk of developing one or more forms of acute altitude illness such as acute mountain sickness (AMS), high altitude cerebral edema (HACE) or high altitude pulmonary edema (HAPE). Our work aims to identify the functional association of genes involved in high altitude diseases. METHOD: In this work we identified the gene networks responsible for high altitude diseases by using the principle of gene co-occurrence statistics from literature and network analysis...
May 2, 2018: Computational Biology and Chemistry
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