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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/29792868/ah6809-decreases-production-of-inflammatory-mediators-by-pge-2-ep2-camp-signaling-pathway-in-an-experimentally-induced-pure-cerebral-concussion-in-rats
#2
Ping Li, Hongyan Jiang, Haiying Wu, Deye Wu, Hengxi Li, Jianyun Yu, Jianghua Lai
Increasing evidence suggests that PGE2 metabolic pathway is involved in pathological changes of the secondary brain injury after traumatic brain injury. However, the underlying mechanisms, in particular, the correlation between various key enzymes and the brain injury, has remained to be fully explored. More specifically, it remains to be ascertained whether AH6809 (an EP2 receptor antagonist) would interfere with the downstream of the PGE2 , regulate the inflammatory mediators and improve neuronal damage in the hippocampus by PGE2 - EP2 - cAMP signaling pathway...
May 21, 2018: Brain Research
https://www.readbyqxmd.com/read/29792569/the-relationship-between-suicidal-responses-and-traumatic-brain-injury-and-severe-insomnia-in-active-duty-veteran-and-civilian-populations
#3
Kelly A Soberay, Jetta E Hanson, Megan Dwyer, E Ashby Plant, Peter M Gutierrez
OBJECTIVE: This study examined how a positive traumatic brain injury (TBI) screening and insomnia severity relates to suicidal outcomes across active duty, veteran, and civilian samples. METHODS: Data were used from 3,993 participants from 19 studies. We conducted a series of analyses by group to identify which significantly differed on the variables of interest. RESULTS: TBI and insomnia each had independent relationships with outcomes over and above the impact of the other factor...
May 24, 2018: Archives of Suicide Research: Official Journal of the International Academy for Suicide Research
https://www.readbyqxmd.com/read/29792533/efficacy-of-the-resilience-and-adjustment-intervention-after-traumatic-brain-injury-a-randomized-controlled-trial
#4
Jeffrey S Kreutzer, Jennifer H Marwitz, Adam P Sima, Ana Mills, Nancy H Hsu, Herman R Lukow
OBJECTIVE: Examine a psychoeducational and skill-building intervention's effectiveness for individuals after traumatic brain injury (TBI), using a two-arm, parallel, randomized, controlled trial with wait-listed control. METHODS: The Resilience and Adjustment Intervention (RAI) targets adjustment challenges and emphasizes education, skill-building and psychological support. Overall, 160 outpatients were randomly assigned to a treatment or wait-list control (WLC) group...
May 24, 2018: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29792528/dissociation-of-cerebrospinal-fluid-amyloid-%C3%AE-and-tau-levels-in-patients-with-prolonged-posttraumatic-disorders-of-consciousness
#5
Sergio Bagnato, Maria Andriolo, Cristina Boccagni, Antonino Sant'Angelo, Maria Enza D'Ippolito, Giuseppe Galardi
BACKGROUND: Traumatic brain injury (TBI) is a major risk factor for Alzheimer's disease (AD). Although the mechanisms that lead to AD after a TBI are unclear, we hypothesize that changes in amyloid-β (Aβ) metabolism and abnormal tau phosphorylation are reasonable candidates. OBJECTIVE: To investigate Aβ and tau dynamics in the chronic phase of TBI. METHODS: We evaluated Aβ1-42 , total tau (t-tau), and phosphorylated tau (p-tau) levels in the cerebrospinal fluid (CSF) of 15 patients who developed a prolonged disorder of consciousness after a severe TBI (mean time from TBI 271...
May 24, 2018: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29792215/adding-left-atrial-appendage-closure-to-open-heart-surgery-provides-protection-from-ischemic-brain-injury-six-years-after-surgery-independently-of-atrial-fibrillation-history-the-laacs-randomized-study
#6
Jesper Park-Hansen, Susanne J V Holme, Akhmadjon Irmukhamedov, Christian L Carranza, Anders M Greve, Gina Al-Farra, Robert G C Riis, Brian Nilsson, Johan S R Clausen, Anne S Nørskov, Christina R Kruuse, Egill Rostrup, Helena Dominguez
BACKGROUND: Open heart surgery is associated with high occurrence of atrial fibrillation (AF), subsequently increasing the risk of post-operative ischemic stroke. Concomitant with open heart surgery, a cardiac ablation procedure is commonly performed in patients with known AF, often followed by left atrial appendage closure with surgery (LAACS). However, the protective effect of LAACS on the risk of cerebral ischemia following cardiac surgery remains controversial. We have studied whether LAACS in addition to open heart surgery protects against post-operative ischemic brain injury regardless of a previous AF diagnosis...
May 23, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29792190/novel-insights-into-neuroinflammation-bacterial-lipopolysaccharide-tumor-necrosis-factor-%C3%AE-and-ureaplasma-species-differentially-modulate-atypical-chemokine-receptor-3-responses-in-human-brain-microvascular-endothelial-cells
#7
Christine Silwedel, Christian P Speer, Axel Haarmann, Markus Fehrholz, Heike Claus, Mathias Buttmann, Kirsten Glaser
BACKGROUND: Atypical chemokine receptor 3 (ACKR3, synonym CXCR7) is increasingly considered relevant in neuroinflammatory conditions, in which its upregulation contributes to compromised endothelial barrier function and may ultimately allow inflammatory brain injury. While an impact of ACKR3 has been recognized in several neurological autoimmune diseases, neuroinflammation may also result from infectious agents, including Ureaplasma species (spp.). Although commonly regarded as commensals of the adult urogenital tract, Ureaplasma spp...
May 23, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29792042/imaging-predictors-of-outcome-in-acute-spontaneous-subarachnoid-hemorrhage-a-review-of-the-literature
#8
Isabel Fragata, Patrícia Canhão
Spontaneous subarachnoid hemorrhage (SAH) accounts for about 5% of strokes, but has a very high morbidity and mortality. Many survivors are left with important cognitive impairment and are severely incapacitated. Prediction of complications such as vasospasm and delayed cerebral ischemia, and of clinical outcome after SAH, is challenging. Imaging studies are essential in the initial evaluation of SAH patients and are increasingly relevant in assessing for complications and prognosis. In this article, we reviewed the role of imaging studies in evaluating early brain injury and predicting complications as well as clinical and neuropsychological prognosis after acute SAH...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29790790/the-effects-of-amantadine-on-traumatic-brain-injury-outcome-a-double-blind-randomized-controlled-clinical-trial
#9
Hossein Ghalaenovi, Arash Fattahi, Jalil Koohpayehzadeh, Mahmoud Khodadost, Neda Fatahi, Morteza Taheri, Alireza Azimi, Sadra Rohani, Hessam Rahatlou
INTRODUCTION: Amantadine, as a dopamine receptor agonist, may stimulate and help the recovery of the nervous system after traumatic brain injury (TBI). METHODS: We performed this study as a double-blind, randomized, controlled clinical trial with target population including all patients with TBI who scored nine or lower on the Glasgow Coma Scale (GCS), admitted to our hospital between January 2013 and April 2014. The protocol included administration of the drug (placebo or amantadine) for 6 weeks and patient evaluation using the GCS and FOUR score on the first, third and seventh days after the drug was started...
May 23, 2018: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29790727/pathophysiology-of-severe-traumatic-brain-injury-overview
#10
Ruth A O'leary, Alistair D Nichol
Traumatic brain injury is a leading cause of morbidity and mortality globally, particularly among young people, with significant social and economic effects. The World Health Organization (WHO) estimates that more than five million people die each year from traumatic injuries worldwide. While public health initiative such as seatbelts and airbags have had a major impact, it will be impossible to prevent traumatic brain injury, it is therefore that we understand the pathophysiology of secondary brain injury to be able to effectively treat our patient but aloes to develop novel targets of future interventions...
May 22, 2018: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/29790724/neuroprotection-in-traumatic-brain-injury
#11
Masoom Desai, Abhi Jain
PURPOSE: Traumatic brain injury has a high incidence worldwide and is associated with significant morbidity and mortality. Moreover, TBI has enduring implications in several domains and limits overall quality of life even in the survivors. Neuroprotective strategies are needed to limit morbidity and mortality associated with this disease process. Insight into the failure of these strategies is required to pursue future research successfully. BACKGROUND: Several different approaches involving pharmacological, surgical and usage of certain devices have been attempted in traumatic brain injury...
May 22, 2018: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/29790570/-%C3%A2-man-in-the-barrel%C3%A2-syndrome-atypical-manifestation-of-giant-cell-arteritis
#12
Y Calle-Lopez, A F Fernandez-Ramirez, E Franco-Dager, J G Gomez-Lopera, A L Vanegas-Garcia
INTRODUCTION: «Man-in-the-barrel» syndrome refers to diplegia of the upper extremities in which mobility of the head and lower limbs is preserved. Brachial plexitis that presents as «man-in-the-barrel» syndrome is an unusual manifestation of giant cell arteritis. We report a case of C5-C6 plexitis as part of the clinical features of a patient with giant cell arteritis. CASE REPORT: A 70-year-old male with a two-month history of weight loss, headache, facial pain and jaw claudication, associated with a persistent elevation of acute phase reactants and bilateral brachial plexopathy, with no evidence of neck or brain injuries or occult neoplasm and with negative autoimmunity tests...
June 1, 2018: Revista de Neurologia
https://www.readbyqxmd.com/read/29790427/simulated-microgravity-culture-enhances-the-neuroprotective-effects-of-human-cranial-bone-derived-mesenchymal-stem-cells-in-traumatic-brain-injury
#13
Takashi Otsuka, Takeshi Imura, Kei Nakagawa, Looniva Shrestha, Shinya Takahashi, Yumi Kawahara, Taijiro Sueda, Kaoru Kurisu, Louis Yuge
Fundamental cures of central nervous system (CNS) diseases are rarely achieved due to the low regenerative ability of the CNS. Recently, cell-based therapy using mesenchymal stem cells (MSCs) has been explored as effective treatments for CNS diseases. Among the various tissue-derived MSCs, we have isolated human cranial bone-derived MSCs (cMSCs) in our laboratory. In addition, we have focused on simulated microgravity (MG) as a valuable culture environment of MSCs. However, the detailed mechanisms underlying functional recovery from the transplantation of MSCs cultured under MG conditions remain unclear...
May 23, 2018: Stem Cells and Development
https://www.readbyqxmd.com/read/29790420/olfactory-training-in-posttraumatic-smell-impairment-mild-improvement-in-threshold-performances-results-from-a-randomized-controlled-trial
#14
Cristobal Langdon, Eduardo Lehrer, Sara Laxe, Isam Alobid, Llorenç Quinto, Joan Berenguer, Franklin Mariño, Montserrat Bernabeu, Concepcio Marin, Joaquim Mullol
Traumatic Brain Injury (TBI) can be associated with partial or total smell loss. Recent studies have suggested that olfactory outcome can be positively modulated after olfactory training (OT). This study's aim was to investigate OT's potential role in smell recovery after TBI-induced olfactory loss. A prospective, randomized, and controlled study was developed. Patients with TBI-induced olfactory dysfunction (N = 42) were randomized into an experimental group with OT and a control group without (nOT). OT was performed twice daily with a 6-odor training set during 12 weeks...
May 23, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29790398/acute-inflammatory-biomarker-responses-to-diffuse-traumatic-brain-injury-in-the-rat-monitored-by-a-novel-microdialysis-technique
#15
Fredrik Clausen, Niklas Marklund, Lars Hillered
Neuroinflammation is a major contributor to the progressive brain injury process induced by traumatic brain injury (TBI), and may play an important role in the pathophysiology of axonal injury. The immediate neuroinflammatory cascade cannot be characterized in the human setting. Therefore, we used the midline fluid percussion injury model of diffuse TBI in rats and a novel microdialysis (MD) method providing stable diffusion-driven biomarker sampling. Immediately post-injury, bilateral amphiphilic tri-block polymer coated MD probes (100 kDa cut off membrane) were inserted and perfused with Dextran 500 kDa-supplemented artificial CSF to optimize protein capture...
May 23, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29790148/prospective-pilot-study-of-cerebral-near-infrared-spectroscopy-monitoring-during-pre-hospital-anaesthesia
#16
S Ångerman, S Länkimäki, N Neuvonen, H Kirves, J Nurmi
BACKROUND: Near-infrared spectroscopy (NIRS) provides a non-invasive measure of cerebral tissue oxygenation. The literature on application of this method in pre-hospital setting is limited. The aims of this study were to determine the feasibility of cerebral NIRS during pre-hospital anaesthesia and to quantify the changes in front lobe regional oxygen saturation (rSO2 ) during the pre-hospital phase. METHODS: NIRS monitoring (Nonin SenSmart X-100) of front lobe regional oxygen saturation (rSO2) was initiated before induction of anaesthesia in 31 adult patients and continued until hospital arrival...
May 22, 2018: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/29789575/tamoxifen-induced-knockdown-of-the-mitochondrial-calcium-uniporter-in-thy1-expressing-neurons-protects-mice-from-hypoxic-ischemic-brain-injury
#17
Matthew Nichols, Evgeny V Pavlov, George S Robertson
The mitochondrial calcium uniporter (MCU) mediates high-capacity mitochondrial calcium uptake that stimulates energy production. However, excessive MCU activity can cause ischemic heart injury. To examine if the MCU is also involved in hypoxic/ischemic (HI) brain injury, we have generated conditional MCU knockout mice by tamoxifen (TMX) administration to adult MCU-floxed (MCUfl/fl ) mice expressing a construct encoding Thy1-cre/ERT2-eYFP. Relative to TMX/Thy1-cre/ERT2-eYFP controls, HI-induced sensorimotor deficits, forebrain neuron loss and mitochondrial damage were decreased for conditional MCU knockout mice...
May 22, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29789523/focal-brain-lesions-induced-with-ultraviolet-irradiation
#18
Mariko Nakata, Kazuaki Nagasaka, Masayuki Shimoda, Ichiro Takashima, Shinya Yamamoto
Lesion and inactivation methods have played important roles in neuroscience studies. However, traditional techniques for creating a brain lesion are highly invasive, and control of lesion size and shape using these techniques is not easy. Here, we developed a novel method for creating a lesion on the cortical surface via 365 nm ultraviolet (UV) irradiation without breaking the dura mater. We demonstrated that 2.0 mWh UV irradiation, but not the same amount of non-UV light irradiation, induced an inverted bell-shaped lesion with neuronal loss and accumulation of glial cells...
May 22, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29789202/relationship-between-prolonged-neural-suppression-and-cerebral-hemodynamic-dysfunction-during-hypothermia-in-asphyxiated-piglets
#19
Wataru Jinnai, Shinji Nakamura, Kosuke Koyano, Satoshi Yamato, Takayuki Wakabayashi, Yinmon Htun, Yasuhiro Nakao, Takashi Iwase, Makoto Nakamura, Saneyuki Yasuda, Masaki Ueno, Takanori Miki, Takashi Kusaka
OBJECTIVES: Hypothermia (HT) improves the outcome of neonatal hypoxic-ischemic encephalopathy. Here, we investigated changes during HT in cortical electrical activity using amplitude-integrated electroencephalography (aEEG) and in cerebral blood volume (CBV) and cerebral hemoglobin oxygen saturation using near-infrared time-resolved spectroscopy (TRS) and compared the results with those obtained during normothermia (NT) after a hypoxic-ischemic (HI) insult in a piglet model of asphyxia...
May 19, 2018: Brain & Development
https://www.readbyqxmd.com/read/29789058/prevention-and-treatment-of-respiratory-distress-syndrome-in-preterm-neonates
#20
Christopher McPherson, Jennifer A Wambach
Respiratory distress syndrome (RDS) impacts a high proportion of preterm neonates, resulting in significant morbidity and mortality. Advances in pharmacotherapy, specifically antenatal corticosteroids and postnatal surfactant therapy, have significantly reduced the incidence and impact of neonatal RDS. Antenatal corticosteroids accelerate fetal lung maturation by increasing the activity of enzymes responsible for surfactant biosynthesis, resulting in improved lung compliance. Maternal antenatal corticosteroid treatment has improved survival of preterm neonates and lowered the incidence of brain injury...
May 1, 2018: Neonatal Network: NN
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