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https://www.readbyqxmd.com/read/28543180/traf6-participates-in-early-brain-injury-after-subarachnoid-hemorrhage-in-rats-through-inhibiting-autophagy-and-promoting-oxidative-stress
#1
Yang Dou, Haitao Shen, Dongxia Feng, Haiying Li, Xiaodi Tian, Jian Zhang, Zhong Wang, Gang Chen
Tumor necrosis factor receptor-associated factor 6 (TRAF6) is a member of the TRAF family and an important multifunctional intracellular adaptin of the tumor necrosis factor (TNF) superfamily and toll/IL-1 receptor (TIR) superfamily. TRAF6 has been studied in several central nervous system (CNS) diseases, including ischemic stroke, traumatic brain injury and neurodegenerative diseases, but its role in subarachnoid hemorrhage (SAH) has not been fully illustrated. This study was designed to explore changes of expression level and potential roles and mechanisms of TRAF6 in early brain injury (EBI) after SAH by using a Sprague-Dawley rat model of SAH induced in 0...
May 24, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28542553/quantitative-mri-for-analysis-of-peritumoral-edema-in-malignant-gliomas
#2
Ida Blystad, J B Marcel Warntjes, Örjan Smedby, Peter Lundberg, Elna-Marie Larsson, Anders Tisell
BACKGROUND AND PURPOSE: Damage to the blood-brain barrier with subsequent contrast enhancement is a hallmark of glioblastoma. Non-enhancing tumor invasion into the peritumoral edema is, however, not usually visible on conventional magnetic resonance imaging. New quantitative techniques using relaxometry offer additional information about tissue properties. The aim of this study was to evaluate longitudinal relaxation R1, transverse relaxation R2, and proton density in the peritumoral edema in a group of patients with malignant glioma before surgery to assess whether relaxometry can detect changes not visible on conventional images...
2017: PloS One
https://www.readbyqxmd.com/read/28540400/imaging-of-cerebral-ischemic-edema-and-neuronal-death
#3
REVIEW
Rüdiger von Kummer, Imanuel Dzialowski
PURPOSE: In acute cerebral ischemia, the assessment of irreversible injury is crucial for treatment decisions and the patient's prognosis. There is still uncertainty how imaging can safely differentiate reversible from irreversible ischemic brain tissue in the acute phase of stroke. METHODS: We have searched PubMed and Google Scholar for experimental and clinical papers describing the pathology and pathophysiology of cerebral ischemia under controlled conditions...
May 24, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28539818/isoflurane-preconditioning-inhibits-the-effects-of-tissue-type-plasminogen-activator-on-brain-endothelial-cell-in-an-in-vitro-model-of-ischemic-stroke
#4
So Yeong Cheon, So Yeon Kim, Eun Hee Kam, Jae Hoon Lee, Jeong Min Kim, Eun Jung Kim, Tae Whan Kim, Bon-Nyeo Koo
Tissue-type plasminogen activator (tPA) is the only treatment for ischemic stroke. However, tPA could induce the intracranial hemorrhage (ICH), which is the main cause of death in ischemic stroke patient after tPA treatment. At present, there is no treatment strategy to ameliorate tPA-induced brain injury after ischemia. Therefore, we investigated the effect of pre-treated isoflurane, which is a volatile anesthetic and has beneficial effects on neurological dysfunction, brain edema and infarct volume in ischemic stroke model...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28538816/antioxidant-effect-of-quinoline-derivatives-containing-or-not-selenium-relationship-with-antinociceptive-action-quinolines-are-antioxidant-and-antinociceptive
#5
Ethel A Wilhelm, Ana Teresinha Ferreira, Mikaela P Pinz, Angélica S Dos Reis, Ane G Vogt, Andre L Stein, Gilson Zeni, Cristiane Luchese
The present study investigated the antioxidant effect of a new class of quinoline derivatives (a-d) on assays in vitro. Lipid peroxidation, thiol peroxidase-like and free radical scavenging activities were determined to evaluate antioxidant activity of compounds. Thiol oxidase-like and δ-aminolevulinate dehydratase activities were performed as a toxicological parameter. A second objective of this study was to evaluate the in vivo antinociceptive effect of the compound with better antioxidant effect and without toxic effects in a model of nociception induced by formalin in mice...
May 22, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28538627/early-heparin-administration-after-tbi-prolonged-cognitive-recovery-associated-with-reduced-cerebral-edema-and-neutrophil-sequestration
#6
Katsuhiro Nagata, Kevin D Browne, Yujin Suto, Kenichiro Kumasaka, John Cognetti, Victoria E Johnson, Joshua Marks, Douglas H Smith, Jose L Pascual
BACKGROUND: Early administration of unfractionated heparin (UFH) after TBI reduces early in vivo circulating leukocytes (LEU) in peri-injury penumbral brain tissue, enhancing cognitive recovery 2 days after injury. It remains unclear how long this effect lasts and if this is related to persistently accumulating LEU in penumbral brain tissue. We hypothesized that UFH reduces LEU brain tissue sequestration resulting in prolonged cognitive recovery. METHODS: CD1 male mice underwent either TBI by controlled cortical impact (CCI) or sham craniotomy...
May 22, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28533125/markers-of-immune-mediated-inflammation-in-the-brains-of-young-adults-and-adolescents-with-type-1-diabetes-and-fatal-diabetic-ketoacidosis-is-there-a-difference
#7
William H Hoffman, Carol M Artlett, Dallas Boodhoo, Mary G F Gilliland, Luis Ortiz, Dries Mulder, David H T Tjan, Alvaro Martin, Alexandru Tatomir, Horea Rus
Due to the limited data on diabetic ketoacidosis and brain edema (DKA/BE) in children/adolescents and the lack of recent data on adults with type 1 diabetes (T1D), we addressed the question of whether neuroinflammation was present in the fatal DKA of adults. We performed immunohistochemistry (IHC) studies on the brains of two young adults with T1D and fatal DKA and compared them with two teenagers with poorly controlled diabetes and fatal DKA. C5b-9, the membrane attack complex (MAC) had significantly greater deposits in the grey and white matter of the teenagers than the young adults (p=0...
May 19, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28530785/anti-edematous-anti-inflammatory-and-neuroprotective-effect-of-etanercept-in-acute-stage-in-experimental-head-injury
#8
Ömer Aykanat, Durmuş Oğuz Karakoyun, Mehmet Erhan Türkoğlu, Cem Dinç
BACKGROUND: To study the anti-edematous, anti-inflammatory, and neuroprotective effect of etanercept in the model of experimental head injury. METHODS: In this study, 40 male-adult Spraque-Dawley rats, with weight ranging from 250g to 300g, were used. The rats are divided into groups as control; non-penetrating trauma; trauma +NS; post-traumatic normal saline; trauma + D; post-traumatic dexamethasone and trauma + E. All medicines were given into peritoneum. After applying trauma and medicine, rats were decapitated in the 24th hour and the samples were studied histopathologically...
May 2017: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/28527875/magnolol-attenuates-the-inflammation-and-apoptosis-through-the-activation-of-sirt1-in-experimental-stroke-rats
#9
Dong-Quan Kou, Yan-Ling Jiang, Jia-Hua Qin, Yin-Hui Huang
BACKGROUND: Silent information regulator 1 (SIRT1), a histone deacetylase, plays a protective role in ischemic brain injury. Previous studies have shown that magnolol has a beneficial effect on ischemic stroke; however, the role of SIRT1 in the protective effect of magnolol against cerebral ischemia has not been investigated. METHODS: We used a middle cerebral artery occlusion model of stroke in rats. Before stroke induction, the rats received intraperitoneal injections of magnolol with or without the SIRT1 inhibitor, EX527...
January 10, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28527261/-posterior-reversible-encephalopathy-syndrome-report-of-a-fatal-case-and-analysis-of-predictive-factors-of-a-poor-prognosis
#10
Moisés Ulises Torres, Ligia Victoria Delgado, Natalia Giraldo, Piedad Urueña, Sergio Franco, Olga Helena Hernández
Posterior reversible encephalopathy syndrome is an illness with multiple causes and distinctive clinicalradiological characteristics that should be known by intensivists and emergency room physicians for a timely diagnosis and treatment. A fatal case of posterior reversible encephalopathy syndrome is presented, and the risk factors related to the outcome are identified.A 60-year-old man without a relevant medical history arrived at the emergency room presenting with depressed consciousness, seizures, and high blood pressure...
April 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28527174/cerebral-venous-sinus-thrombosis-and-posterior-reversible-encephalopathy-syndrome-coexisting-in-a-woman-a-rare-coincidence
#11
Surekha Dabla, Himanshu Juneja, Anubha Garg, Renu Bansal, Surender Kumar
Cerebral venous sinus thrombosis (CVST) and posterior reversible encephalopathy syndrome (PRES) are two rare diseases which may present with similar symptoms and signs. We report a case with coexisting PRES and CVST in a 34 years old postpartum female presented with multiple episodes of generalized seizures and bilateral vision loss after delivery. MRI brain and venography revealed left transverse sinus, sigmoid sinus and internal cerebral vein thrombosis with vasogenic edema in bilateral parieto-occipital, right temporal and left frontal area, which was suggestive of posterior reversible encephalopathy syndrome (PRES)...
April 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28524122/-a-plasminogen-regulation-system-in-brain-tumors
#12
O I Kit, E M Frantsiyants, L S Kozlova, E E Rostorguev, I V Balyazin-Parfenov, Yu A Pogorelova
INTRODUCTION: Tumor progression and neovascularization during malignant processes are believed to be associated with plasminogen activators and the PAI-1 inhibitor, but their role and interactions in various types of brain tumors have been studied insufficiently. AIM: To conduct a comparative study of plasminogen regulation in optic nerve sheath meningiomas, glioblastomas, and brain metastases of breast cancer, as well as in perifocal tissues surrounding the tumors...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28524074/neurotrauma-the-crosstalk-between-neurotrophins-and-inflammation-in-the-acutely-injured-brain
#13
REVIEW
Lindolfo da Silva Meirelles, Daniel Simon, Andrea Regner
Traumatic brain injury (TBI) is a major cause of morbidity and mortality among young individuals worldwide. Understanding the pathophysiology of neurotrauma is crucial for the development of more effective therapeutic strategies. After the trauma occurs, immediate neurologic damage is produced by the traumatic forces; this primary injury triggers a secondary wave of biochemical cascades together with metabolic and cellular changes, called secondary neural injury. In the scenario of the acutely injured brain, the ongoing secondary injury results in ischemia and edema culminating in an uncontrollable increase in intracranial pressure...
May 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28523299/three-dimensional-organ-scanning-reveals-brain-edema-reduction-in-a-rat-model-of-stroke-treated-with-an-aquaporin-4-inhibitor
#14
Elena Silvia Popescu, Ionica Pirici, Raluca Niculina Ciurea, Tudor Adrian Bălşeanu, Bogdan Cătălin, Claudiu Mărgăritescu, LaurenŢiu Mogoantă, Sorin Hostiuc, Daniel Pirici
Stroke is one of the most important cause of death and disability, especially when considering the increasing life expectancy worldwide, with ischemic stroke being much more common than hemorrhages. In the physiopathological chain of ischemic stroke, brain edema is one first element that if attended to might reduce tissue necrosis, penumbra, and increase functional recovery. Aquaporin 4 (AQP4) has been found to be the most important water channel in the brain, and its inhibition before inducing focal ischemia in an animal model of stroke proved to alleviate the pathology and improve clinical recovery...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28516363/posterior-reversible-encephalopathy-syndrome-presenting-in-the-anterior-circulation-with-malignant-intracranial-hypertension-requiring-surgical-decompression-a-case-report-and-literature-review
#15
S Hernández-Durán, A Barrantes-Freer, V Rohde, C von der Brelie
Posterior reversible encephalopathy syndrome (PRES) is thought to result from endothelial dysfunction and breakdown of the blood-brain barrier with subsequent vasogenic edema. Abrupt hypertension has been identified as one of its risk factors. We present a rare case of PRES in the anterior circulation with sudden onset of left hemiparesis and rapid neurological deterioration on the basis of hypertensive crisis. Due to refractory intracranial hypertension, the patient required emergent right decompressive craniectomy...
May 17, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28516343/therapeutic-dormancy-to-delay-postsurgical-glioma-recurrence-the-past-present-and-promise-of-focal-hypothermia
#16
REVIEW
Didier Wion
Surgery precedes both radiotherapy and chemotherapy as the first-line therapy for glioma. However, despite multimodal treatment, most glioma patients die from local recurrence in the resection margin. Glioma surgery is inherently lesional, and the response of brain tissue to surgery includes hemostasis, angiogenesis, reactive gliosis and inflammation. Unfortunately, these processes are also associated with tumorigenic side-effects. An increasing amount of evidence indicates that the response to a surgery-related brain injury is hijacked by residual glioma cells and participates in the local regeneration of tumor tissues at the resection margin...
May 17, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28516076/primary-central-nervous-system-vasculitis-mimicking-a-cortical-brain-tumor-a-case-report
#17
Joo-Seok Lee, Tae-Young Jung, Kyung-Hwa Lee, Seul-Kee Kim
We report a case of primary central nervous system vasculitis (PCNSV) mimicking a cortical brain tumor. A 25-year-old woman presented with a 2-week history of headache and transient right hemiparesis. Brain magnetic resonance imaging (MRI) revealed a cortical-involving lesion on the left frontal lobe. The 6-cm sized lesion showed low signal intensity on T1-weighted images and high signal intensity on T2-weighted images. The lesion had continual linear enhancement on the subcortical white matter and leptomeninges...
April 2017: Brain Tumor Research and Treatment
https://www.readbyqxmd.com/read/28515334/central-acting-therapeutics-alleviate-respiratory-weakness-caused-by-heart-failure-induced-ventilatory-overdrive
#18
Andrew J Foster, Mathew J Platt, Jason S Huber, Ashley L Eadie, Alicia M Arkell, Nadya Romanova, David C Wright, Todd E Gillis, Coral L Murrant, Keith R Brunt, Jeremy A Simpson
Diaphragmatic weakness is a feature of heart failure (HF) associated with dyspnea and exertional fatigue. Most studies have focused on advanced stages of HF, leaving the cause unresolved. The long-standing theory is that pulmonary edema imposes a mechanical stress, resulting in diaphragmatic remodeling, but stable HF patients rarely exhibit pulmonary edema. We investigated how diaphragmatic weakness develops in two mouse models of pressure overload-induced HF. As in HF patients, both models had increased eupneic respiratory pressures and ventilatory drive...
May 17, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28512446/neuroprotective-roles-of-l-cysteine-in-attenuating-early-brain-injury-and-improving-synaptic-density-via-the-cbs-h2s-pathway-following-subarachnoid-hemorrhage-in-rats
#19
Tong Li, Lingxiao Wang, Quan Hu, Song Liu, Xuemei Bai, Yunkai Xie, Tiantian Zhang, Shishi Bo, Xiangqian Gao, Shuhua Wu, Gang Li, Zhen Wang
l-Cysteine is a semi-essential amino acid and substrate for cystathionine-β-synthase (CBS) in the central nervous system. We previously reported that NaHS, an H2S donor, significantly alleviated brain damage after subarachnoid hemorrhage (SAH) in rats. However, the potential therapeutic value of l-cysteine and the molecular mechanism supporting these beneficial effects have not been determined. This study was designed to investigate whether l-cysteine could attenuate early brain injury following SAH and improve synaptic function by releasing endogenous H2S...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28512445/the-therapeutic-value-of-bone-marrow-derived-endothelial-progenitor-cell-transplantation-after-intracerebral-hemorrhage-in-rats
#20
Rui Zhang, Jing Yang, Jingjing Yuan, Bo Song, Yan Wang, Yuming Xu
AIMS: To study the effect of endothelial progenitor cell (EPC) treatment on intracerebral hemorrhage (ICH) in rats and elucidate possible mechanisms. METHODS: The rats were randomly divided into three groups: (1) EPC group: ICH + EPC, (2) phosphate-buffered saline group: ICH + PBS, and (3) sham group. EPCs were transplanted intravenously 6 h after ICH. Modified neurological severity score was used to evaluate neurological function. Blood-brain barrier (BBB) integrity was evaluated...
2017: Frontiers in Neurology
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