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https://www.readbyqxmd.com/read/28944949/the-research-progress-of-mesenchymal-stem-cells-in-the-treatment-of-traumatic-brain-injury
#1
Gang Li, Yue Yang, Hua-Jiang Dong, Ling Lin
Traumatic brain injury (TBI) is the leading cause of mortality and morbidity in children and adults throughout the world. It is urgent to ameliorate TBI damage and reduce the disability and case-fatality rate. Stem cell therapy is another medical revolution after drug and surgical medication. Mesenchymal stem cells (MSCs) are a class of cells with significant self-renewal and multi-lineage differentiation properties and be favorable for the treatment of various diseases and injuries, it could be envisioned that MSCs transplantation may be a promising treatment for TBI...
July 16, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28944947/posttraumatic-cerebral-infarction-after-decompressive-craniectomy-for-traumatic-brain-injury-incidence-risk-factors-and-outcome
#2
Tsung-Ming Su, Chu-Mei Lan, Tsung-Han Lee, Fu-Yuan Shih, Shih-Wei Hsu, Cheng-Hsien Lu
AIM: To investigate the incidence, timing, risk factors of posttraumatic cerebral infarction (PTCI) and its influence on mortality in patients with moderate to severe traumatic brain injury (TBI). MATERIAL AND METHODS: After reviewing the medical records and radiographs over a 6-year period, 173 patients with moderate to severe TBI were enrolled to determine the risk factors for the development of PTCI following unilateral decompressive craniectomy (DC). RESULTS: The incidence of PTCI following DC was 31...
July 23, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28944915/neuroprotective-effect-of-total-flavonoids-from-ilex-pubescens-against-focal-cerebral-ischemia-reperfusion-injury-in-rats
#3
Xiaoyan Fang, Yujie Li, Jingyi Qiao, Ying Guo, Mingsan Miao
Ilex pubescens is commonly used in traditional Chinese medicine to treat cardiovascular and cerebrovascular diseases, such as coronary artery disease and stroke. However, the underlying mechanisms remain to be fully elucidated. The aim of the present study was to investigate the effects of Ilex pubescens total flavonoids (IPTF) on neuroprotection and the potential mechanisms in a rat model of focal cerebral ischemia/reperfusion (I/R) injury. Rats were pretreated with intragastric administration of IPTF at doses of 200 and 100 mg/kg for 5 days; middle cerebral artery occlusion surgery was then performed to induce cerebral I/R injury...
September 20, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28944912/dhhp%C3%A2-6-attenuates-cerebral-ischemia%C3%A2-reperfusion-injury-in-rats-through-the-inhibition-of-apoptosis
#4
Yingshi Ji, Xin Yan, Yang Hu, Huan Xue, Jianfeng Sun, Huaqiu Chen, Jiayu Zhang, Liping Wang, Baigong Xue, Li Sun
As a novel reactive oxygen species (ROS) scavenger, deuterohemin His peptide‑6 (DhHP‑6) has been demonstrated to prolong the lifespan of Caenorhabditis elegans and has also exhibited protective effects in myocardial ischemia‑reperfusion injury. Whether similar effects occur during cerebral ischemia‑reperfusion (CIR) injury remains to be elucidated. The present study evaluated the function of DhHP‑6 and its underlying mechanisms in a middle cerebral artery occlusion (MCAO) model in rats. The focal transient MCAO model was implemented using the Longa method of ischemia for 2 h followed by reperfusion for 22 h in male Wistar rats...
September 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28944860/polyaniline-promotes-peripheral-nerve-regeneration-by-enhancement-of-the-brain%C3%A2-derived-neurotrophic-factor-and-ciliary-neurotrophic-factor-expression-and-activation-of-the-erk1-2-mapk-signaling-pathway
#5
Lin Fan, Yan Xiong, Zhen Fu, Dingfeng Xu, Lei Wang, Yong Chen, Haoyang Xia, Na Peng, Shaojun Ye, Yanfeng Wang, Lina Zhang, Qifa Ye
A previous study has demonstrated a progression in the nerve regeneration by polyaniline/cellulose (PANI/RC), although the underlying mechanism was not elucidated. In the present study, regenerated nerves were investigated, using histological techniques, functional assays and western blot analysis. The triceps surae muscle weight ratio percentages of the sham, regenerated cellulose (RC) and the PANI/RC groups were 38.88±4.76 and 76.32±7.11%, respectively. The thickness of the myelin sheath for the aforementioned groups were as follows: 1...
September 20, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28944854/effect-of-hippocampal-l%C3%A2-nbp-on-bdnf-and-trkb-expression-and-neurological-function-of-vascular-dementia-rats
#6
Yujing Huang, Zhaohui Li, Guangxian Nan
The pathogenesis of vascular dementia (VD) is associated with neuronal degeneration, apoptosis or necrosis following ischemic brain injury. L‑butylphthalide (L‑NBP), has been demonstrated to exhibit potent anti‑ischemic and anti‑VD effects, however the associated specific mechanism remains to be elucidated. The present study generated a VD rat model, in which the effect of L‑NBP on neurological function and expression levels of brain‑derived neurotrophic factor (BDNF) and tyrosine kinase receptor B (TrkB) were observed...
September 20, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28944633/-process-for-implementing-a-pain-assessment-scale-for-patients-with-brain-injuries-160-description-of-a-project-methodology-based-on-the-integrated-model-of-consultation
#7
Veronique de Goumoens, Francois Decaillet, Amelia Didier, Chantal Montreuil, Karin Diserens, Anne-Sylvie Ramelet
Background : in a neurosurgery unit, nurses selected the Critical Pain Observation Tool (CPOT) based on evidence to assess pain in brain-injured patients. However, months after implementation, nursing managers have observed an underutilization.Objectives : support a care team to overcome the pitfalls encountered during the implementation of the CPOT scale for brain-injured patients in neurosurgery unit.Methods : the Lescarbeau, Payette and St-Arnaud's Integrated Model of Consultation was selected. In addition to a scientific literature review, self-administered questionnaire and three interview guides were developed to gather the views of caregivers...
April 19, 2017: Recherche en Soins Infirmiers
https://www.readbyqxmd.com/read/28944346/falx-cerebri-segmentation-via-multi-atlas-boundary-fusion
#8
Jeffrey Glaister, Aaron Carass, Dzung L Pham, John A Butman, Jerry L Prince
The falx cerebri is a meningeal projection of dura in the brain, separating the cerebral hemispheres. It has stiffer mechanical properties than surrounding tissue and must be accurately segmented for building computational models of traumatic brain injury. In this work, we propose a method to segment the falx using T1-weighted magnetic resonance images (MRI) and susceptibility-weighted MRI (SWI). Multi-atlas whole brain segmentation is performed using the T1-weighted MRI and the gray matter cerebrum labels are extended into the longitudinal fissure using fast marching to find an initial estimate of the falx...
September 2017: Medical Image Computing and Computer-assisted Intervention: MICCAI ..
https://www.readbyqxmd.com/read/28943701/automatic-falx-cerebri-and-tentorium-cerebelli-segmentation-from-magnetic-resonance-images
#9
Jeffrey Glaister, Aaron Carass, Dzung L Pham, John A Butman, Jerry L Prince
The falx cerebri and tentorium cerebelli are dural structures found in the brain. Due to the roles both structures play in constraining brain motion, the falx and tentorium must be identified and included in finite element models of the head to accurately predict brain dynamics during injury events. To date there has been very little research work on automatically segmenting these two structures, which is understandable given that their 1) thin structure challenges the resolution limits of in vivo 3D imaging, and 2) contrast with respect to surrounding tissue is low in standard magnetic resonance imaging...
February 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28943558/the-serum-level-of-kl-6-is-associated-with-the-risk-of-insulin-resistance-and-new-onset-diabetes-mellitus-the-tanno-sobetsu-study
#10
Hiroshi Akasaka, Hirofumi Ohnishi, Yoshifumi Narita, Masami Kameda, Takayuki Miki, Hiroki Takahashi, Wari Yamamoto, Hitoshi Sohma, Naoya Masumori, Tetsuji Miura
Objective Inflammatory cytokines generated in visceral fat have been shown to contribute to the development of insulin resistance. The involvement of pulmonary inflammation in insulin resistance remains unclear, but smoking is known to be a risk factor for diabetes as well as chronic obstructive pulmonary disease. We herein examined the hypothesis that increased serum levels of lung interstitial injury biomarkers (SP-A, SP-D and KL-6) are associated with the risk of diabetes development. Methods For cross-sectional and longitudinal analyses, we enrolled 750 apparently healthy non-diabetic subjects who received annual examinations in 2011 or 2012 in the Tanno-Sobetsu cohort...
September 25, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28943422/epidemiology-management-and-functional-outcomes-of-traumatic-brain-injury-in-sub-saharan-africa
#11
Jessica Eaton, Asma Bilal Hanif, Joanna Grudziak, Anthony Charles
BACKGROUND: Trauma accounts for 4.7 million deaths each year, with an estimated 90% of these occurring in LMICs. Approximately half of trauma-related deaths are due to central nervous system injury. OBJECTIVE: Because a thorough understanding of TBI in LMICs is essential to mitigate TBI-related mortality, we established a clinical and radiographic database to characterize TBI in our low-income setting. METHODS: This is a review of prospectively collected data from Kamuzu Central Hospital, a tertiary care center in the capital of Malawi...
September 21, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28943419/severe-cerebral-complications-secondary-to-perforation-injury-of-the-anterior-skull-base-during-sinonasal-surgery-an-underappreciated-problem
#12
Shadi Al-Afif, Elvis J Hermann, Gökce Hatipoglu Majernik, Makoto Nakamura, Peter Raab, Thomas Lenarz, Joachim K Krauss
OBJECTIVE: Functional endonasal sinus surgery (FESS) is widely practiced and is considered a generally safe procedure. Skull base injuries occur in less than 1% of procedures and are typically associated with cerebrospinal fluid leaks. Rarely, skull base injuries might result in cerebral lesions. Here we present a series of four patients with iatrogenic perforating injuries of the anterior skull base and cerebral lesions after routine FESS. METHODS: Four patients with iatrogenic perforating cerebral lesions after routine FESS performed at other institutions were referred to a tertiary neurosurgery department within a 10-year period...
September 21, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28943410/loss-of-reelin-protects-mice-against-arterial-thrombosis-by-impairing-integrin-activation-and-thrombus-formation-under-high-shear-conditions
#13
Nina Sarah Gowert, Irena Krüger, Meike Klier, Lili Donner, Friederike Kipkeew, Michael Gliem, Nicholas J Bradshaw, David Lutz, Sabrina Köber, Harald Langer, Sebastian Jander, Kerstin Jurk, Michael Frotscher, Carsten Korth, Hans H Bock, Margitta Elvers
Reelin is a secreted glycoprotein and essential for brain development and plasticity. Recent studies provide evidence that Reelin modifies platelet actin cytoskeletal dynamics. In this study we sought to dissect the contribution of Reelin in arterial thrombus formation. Here we analyzed the impact of Reelin in arterial thrombosis ex vivo and in vivo using Reelin deficient (reeler) and wildtype mice. We found that Reelin is secreted upon platelet activation and mediates signaling via glycoprotein (GP)Ib, the amyloid precursor protein (APP) and apolipoprotein E receptor 2 (ApoER2) to induce activation of Akt, extracellular signal-regulated kinase (Erk), SYK and Phospholipase Cγ2...
September 21, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28943289/serum-lipocalin-2-concentrations-and-mortality-of-severe-traumatic-brain-injury
#14
Liang-Jun Shen, Jing Zhou, Mi Guo, Chun-Song Yang, Qi-Chen Xu, Qing-Wei Lv, Song-Bin Yang, Hang-Bin Huang
BACKGROUND: Lipocalin-2 is related to acute brain injury. We assessed the prognostic value of serum lipocalin-2 in head trauma. METHODS: Blood samples were collected from 115 controls and 115 patients with severe traumatic brain injury. Trauma severity was assessed by Glasgow Coma Scale (GCS) scores at baseline. Thirty-day mortality and overall survival time were recorded. RESULTS: Compared with the controls, serum lipocalin-2 concentrations were significantly increased in the patients...
September 21, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28943285/ethanol-differentially-modulates-p2x4-and-p2x7-receptor-activity-and-function-in-bv2-microglial-cells
#15
Liana Asatryan, Olga Ostrovskaya, Dustin Lieu, Daryl L Davies
Neuroinflammation is one of the mechanisms leading to neurodegenerative brain damage induced by chronic alcohol (ethanol) exposure. Microglia play a major role in the development of innate immune responses to environmental injuries including ethanol. Adenosine 5″-triphosphate (ATP)-activated purinergic P2X receptor (P2XR) subtypes, P2X4Rs and P2X7Rs, are endogenously expressed in microglia and can modulate their activity. These 2 P2XR subtypes differ pharmacologically and functionally: 1) P2X4Rs are activated at lower (≤0...
September 21, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28943199/effects-of-the-dimeric-psd-95-inhibitor-uccb01-144-on-functional-recovery-after-fimbria-fornix-transection-in-rats
#16
Jens Bak Sommer, Anders Bach, Hana Malá, Kristian Strømgaard, Jesper Mogensen, Darryl S Pickering
Pharmacological inhibition of PSD-95 is a promising therapeutic strategy in the treatment of stroke, and positive effects of monomeric and dimeric PSD-95 inhibitors have been reported in numerous studies. However, whether therapeutic effects will generalize to other types of acute brain injury such as traumatic brain injury (TBI), which has pathophysiological mechanisms in common with stroke, is currently uncertain. We have previously found a lack of neuroprotective effects of dimeric PSD-95 inhibitors in the controlled cortical impact model of TBI in rats...
September 21, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28942681/the-factor-structure-of-the-disability-rating-scale-in-individuals-with-traumatic-brain-injury
#17
Denise Krch, Anthony H Lequerica
PURPOSE: To examine the factor structure of the Disability Rating Scale and the predictive validity of the scale's factors among individuals with traumatic brain injury. MATERIALS AND METHODS: Five hundred and eight individuals with moderate-to-severe traumatic brain injury were administered the Disability Rating Scale. The sample was randomly divided into two groups. An exploratory factor analysis was conducted on Group 1, and a confirmatory factor analysis on Group 2...
September 23, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28942553/clinacanthus-nutans-mitigates-neuronal-apoptosis-and-ischemic-brain-damage-through-augmenting-the-c-ebp%C3%AE-driven-ppar-%C3%AE-transcription
#18
Jui-Sheng Wu, Mei-Han Kao, Hsin-Da Tsai, Wai-Mui Cheung, Jin-Jer Chen, Wei-Yi Ong, Grace Y Sun, Teng-Nan Lin
Clinacanthus nutans Lindau (C. nutans) is a traditional herbal medicine widely used in Asian countries for treating a number of remedies including snake and insect bites, skin rashes, viral infections, and cancer. However, the underlying molecular mechanisms for its action and whether C. nutans can offer protection on stroke damage in brain remain largely unknown. In the present study, we demonstrated protective effects of C. nutans extract to ameliorate neuronal apoptotic death in the oxygen-glucose deprivation model and to reduce infarction and mitigate functional deficits in the middle cerebral artery occlusion model, either administered before or after hypoxic/ischemic insult...
September 23, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28942474/svct2-expression-and-function-in-reactive-astrocytes-is-a-common-event-in-different-brain-pathologies
#19
Katterine Salazar, Fernando Martínez, Margarita Pérez-Martín, Manuel Cifuentes, Laura Trigueros, Luciano Ferrada, Francisca Espinoza, Natalia Saldivia, Romina Bertinat, Katherine Forman, María José Oviedo, Antonio J López-Gambero, Christian Bonansco, Ernesto R Bongarzone, Francisco Nualart
Ascorbic acid (AA), the reduced form of vitamin C, acts as a neuroprotector by eliminating free radicals in the brain. Sodium/vitamin C co-transporter isoform 2 (SVCT2) mediates uptake of AA by neurons. It has been reported that SVCT2 mRNA is induced in astrocytes under ischemic damage, suggesting that its expression is enhanced in pathological conditions. However, it remains to be established if SVCT expression is altered in the presence of reactive astrogliosis generated by different brain pathologies. In the present work, we demonstrate that SVCT2 expression is increased in astrocytes present at sites of neuroinflammation induced by intracerebroventricular injection of a GFP-adenovirus or the microbial enzyme, neuraminidase...
September 23, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28942245/regulatory-role-of-nadph-oxidase-2-in-the-polarization-dynamics-and-neurotoxicity-of-microglia-macrophages-after-traumatic-brain-injury
#20
Jing Wang, Merry W Ma, Krishnan M Dhandapani, Darrell W Brann
Traumatic brain injury (TBI) is a leading cause of death and disability. Secondary injuries that develop after the initial trauma contribute to long-lasting neurophysiological deficits. Polarization of microglia/macrophages toward a pro-inflammatory (M1) phenotype may increase the progression of secondary injury following TBI; however, the regulatory and functional mechanisms underlying these changes remain poorly defined. In the present study, we showed elevated expression of NADPH oxidase 2 (NOX2) and activation of nuclear factor-kappa B (NF-κB) predominantly in microglia/macrophages at 4- and 7-days after controlled cortical impact in mice...
September 20, 2017: Free Radical Biology & Medicine
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