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https://www.readbyqxmd.com/read/29236326/knockdown-of-ski-decreased-the-reactive-astrocytes-proliferation-in-vitro-induced-by-oxygen-glucose-deprivation-reoxygenation
#1
Xin Zhao, Kai-Sheng Zhou, Zhong-Hao Li, Wei Nan, Jing Wang, Ya-Yi Xia, Hai-Hong Zhang
Glia scar is a pathological marker in late phase of brain ischemia disease, which constitutes a major physical biochemical barrier to impede axonal regrowth. Astrocytes are known to be critically involved in the formation of glial scar. However, their response to ischemia and their role in neuroprotection after central nervous system (CNS) injury are not completely clear. Recently, we have demonstrated for the first time that Ski was up-regulated in reactive astrocytes after spinal cord injury in vivo and in vitro, which indicates Ski may be a new molecule that control astrocytes biologic properties after CNS injury...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29236169/current-treatment-of-central-retinal-artery-occlusion-a-national-survey
#2
Teddy S Youn, Patrick Lavin, Morgan Patrylo, Joseph Schindler, Howard Kirshner, David M Greer, Matthew Schrag
BACKGROUND: Central retinal artery occlusion (CRAO) is an ophthalmological emergency, the retinal analog of a stroke. To date there is no consensus or national guidelines on how this disorder should be managed. As academic neurologists and ophthalmologists treat CRAO frequently, we set out to understand how these clinicians approach patients with CRAO with a national survey. METHODS: We identified university-associated teaching hospitals offering vascular neurology, neuro-ophthalmology and/or retina fellowships in the US and asked the directors of the programs to respond to questions in an open response format to profile the acute management of CRAO at their institution...
December 13, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/29236051/synchrotron-based-pencil-beam-scanning-nozzle-with-an-integrated-mini-ridge-filter-a-dosimetric-study-to-optimize-treatment-delivery
#3
Xianliang Wang, Yupeng Li, Xiaodong Zhang, Heng Li, Koichi Miyazaki, Rintaro Fujimoto, Hiroshi Akiyama, Michael T Gillin, Falk Poenisch, Narayan Sahoo, David Grosshans, Brandon Gunn, Steven Jay Frank, Pei Wang, Jinyi Lang, Qing Hou, Xiaorong Ronald Zhu
A mini-ridge filter is often used to widen the Bragg peak in the longitudinal direction at low energies but not high energies. To facilitate the clinical use of a mini-ridge filter, we performed a planning study for the feasibility of a mini-ridge filter as an integral part of the synchrotron nozzle (IMRF). Dose models with and without IMRF were commissioned in a commercial Treatment planning system (TPS). Dosimetric characteristics in a homogenous water phantom were compared between plans with and without IMRF for a fixed spread-out Bragg peak width of 4 cm with distal ranges varying from 8 to 30 g/cm²...
December 13, 2017: Cancers
https://www.readbyqxmd.com/read/29236042/single-channel-eeg-artifact-identification-using-two-dimensional-multi-resolution-analysis
#4
Mojtaba Taherisadr, Omid Dehzangi, Hossein Parsaei
As a diagnostic monitoring approach, electroencephalogram (EEG) signals can be decoded by signal processing methodologies for various health monitoring purposes. However, EEG recordings are contaminated by other interferences, particularly facial and ocular artifacts generated by the user. This is specifically an issue during continuous EEG recording sessions, and is therefore a key step in using EEG signals for either physiological monitoring and diagnosis or brain-computer interface to identify such artifacts from useful EEG components...
December 13, 2017: Sensors
https://www.readbyqxmd.com/read/29235648/anatomical-map-of-the-cranial-vasculature-and-sensory-ganglia
#5
Laura Taberner, Aitor Bañón, Berta Alsina
There is growing evidence of a direct influence of vasculature on the development of neurons in the brain. The development of the cranial vasculature has been well described in zebrafish but its anatomical relationship with the adjacent developing sensory ganglia has not been addressed. Here, by 3D imaging of fluorescently labelled blood vessels and sensory ganglia, we describe for the first time the spatial organization of the cranial vasculature in relation to the cranial ganglia during zebrafish development...
December 13, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/29235453/potential-impact-of-thermal-effects-during-ultrasonic-neurostimulation-retrospective-numerical-estimation-of-temperature-elevation-in-seven-rodent-setups
#6
Charlotte Constans, Philippe Mateo, Mickael Tanter, Jean-Francois Aubry
In the past decade, a handful but growing number of groups have reported worldwide successful low intensity focused ultrasound induced neurostimulation trials on rodents with effects ranging from movement elicitations to reduction of anesthesia time or reduction of the duration of drug induced seizures. The mechanisms underlying ultrasonic neuromodulation are still not fully understood. Given the low intensities used in most of the studies, a mechanical effect is more likely to be responsible for the neuromodulation effect, but a clear description of the thermal and mechanical effects is necessary to optimize clinical applications...
December 13, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29235446/optimized-programming-algorithm-for-cylindrical-and-directional-deep-brain-stimulation-electrodes
#7
Daria Nesterovich Anderson, Braxton Osting, Johannes Vorwerk, Alan Chuck Dorval, Christopher R Butson
 Deep brain stimulation (DBS) is a growing treatment option for movement and psychiatric disorders. As DBS technology moves toward directional leads with increased numbers of smaller electrode contacts, trial-and-error methods of manual DBS programming are becoming too time-consuming for clinical feasibility. We propose an algorithm to automate DBS programming in near real-time for a wide range of DBS lead designs. Approach: Magnetic resonance imaging and diffusion tensor imaging are used to build finite element models that include anisotropic conductivity...
December 13, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/29235051/development-of-the-cns-tap-tool-for-the-selection-of-precision-medicine-therapies-in-neuro-oncology
#8
Joseph R Linzey, Bernard L Marini, Amy Pasternak, Cory Smith, Zac Miklja, Lili Zhao, Chandan Kumar-Sinha, Alyssa Paul, Nicholas Harris, Patricia L Robertson, Lindsey M Hoffman, Arul Chinnaiyan, Rajen Mody, Carl Koschmann
The number of targeted therapies utilized in precision medicine are rapidly increasing. Neuro-oncology offers a unique challenge due to the varying blood brain barrier (BBB) penetration of each agent. Neuro-oncologists face a difficult task weighing the growing number of potential targeted therapies and their likelihood of BBB penetration. We developed the CNS TAP Working Group and performed an extensive literature review for the evidence-based creation of the CNS TAP tool, which was retrospectively validated by analyzing brain tumor patients who underwent therapy targeted based on genomic results from an academic sequencing study (MiOncoseq, n = 17) or private molecular profiling (Foundation One, n = 7)...
December 12, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29235019/investigation-of-the-interaction-of-%C3%AE-methylamino-l-alanine-with-eukaryotic-and-prokaryotic-proteins
#9
Brendan J Main, Carly J Italiano, Kenneth J Rodgers
There is a strong body of evidence linking the non-protein amino acid (NPAA) β-methylamino-L-alanine (BMAA) to the development of a number of neurodegenerative diseases. BMAA has been found globally, is produced by a number of organisms including cyanobacteria, diatoms, and dinoflagellates; and has been shown to biomagnify through trophic levels. The role of BMAA in neurodegenerative disease is highlighted by its presence in the brains of a number of neurodegenerative disease patients, where it was found in a protein-bound form...
December 12, 2017: Amino Acids
https://www.readbyqxmd.com/read/29234998/reduction-of-cardiopulmonary-renal-complications-with-serum-bnp-guided-volume-status-management-in-posthepatectomy-patients
#10
Sameer H Patel, Bradford J Kim, Ching-Wei D Tzeng, Yun Shin Chun, Claudius Conrad, Jean-Nicolas Vauthey, Thomas A Aloia
BACKGROUND: After hepatectomy, over- and under-resuscitations induce cardiopulmonary complications and acute kidney injury, respectively, leading to significant perioperative morbidity and mortality. Unlike serum chemistries or urine output, serum brain natriuretic peptide (BNP) levels have been shown to accurately reflect current intravascular fluid balance without influence from alterations of hormonal axes. Based on these data, this study was designed to measure the impact of a serum BNP-guided hepatobiliary fluid protocol on the incidence of posthepatectomy cardiopulmonary/renal complications...
October 11, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/29234834/contributions-of-prolonged-contingent-and-non-contingent-cocaine-exposure-to-escalation-of-cocaine-intake-and-glutamatergic-gene-expression
#11
Kyle L Ploense, Philip Vieira, Lana Bubalo, Gema Olivarria, Amanda E Carr, Karen K Szumlinski, Tod E Kippin
Similar to the pattern observed in people with substance abuse disorders, laboratory animals will exhibit escalation of cocaine intake when the drug is available over prolonged periods of time. Here, we investigated the contribution of behavioral contingency of cocaine administration on escalation of cocaine intake and gene expression in the dorsal medial prefrontal cortex (dmPFC) in adult male rats. Rats were allowed to self-administer intravenous cocaine (0.25 mg/infusion) under either limited cocaine-(1 h/day), prolonged cocaine-(6 h/day), or limited cocaine-(1 h/day) plus yoked cocaine-access (5 h/day); a control group received access to saline (1 h/day)...
December 12, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/29234817/neural-plasticity-and-its-initiating-conditions-in-tinnitus
#12
REVIEW
L E Roberts
BACKGROUND AND OBJECTIVE: Deafferentation caused by cochlear pathology (which can be hidden from the audiogram) activates forms of neural plasticity in auditory pathways, generating tinnitus and its associated conditions including hyperacusis. This article discusses tinnitus mechanisms and suggests how these mechanisms may relate to those involved in normal auditory information processing. MATERIALS AND METHODS: Research findings from animal models of tinnitus and from electromagnetic imaging of tinnitus patients are reviewed which pertain to the role of deafferentation and neural plasticity in tinnitus and hyperacusis...
December 12, 2017: HNO
https://www.readbyqxmd.com/read/29234571/measurement-of-elevated-il-37-levels-in-acute-ischemic-brain-injury-a-cross-sectional-pilot-study
#13
Atif Zafar, Asad Ikram, Dinesh V Jillella, Duraisamy Kempuraj, Mohammad Moshahid Khan, Saif Bushnaq, Harold Adam, Santiago Ortega-Gutierrez, Syed A Quadri, Mudassir Farooqui, Asgar Zaheer, Enrique C Leira
Interleukin (IL)-37 is a new member of the IL-1 cytokine family with a defined role as a negative feedback inhibitor of proinflammatory responses. IL-37 has yet to be evaluated in non-immune-mediated neurological diseases, such as ischemic or hemorrhagic strokes. This study aimed to measure urine and serum IL-37 levels in patients with ischemic stroke. Twelve patients consented for our study. Two sets of serum and urine samples were obtained and analyzed, one upon admission to the hospital and the second the next morning...
October 11, 2017: Curēus
https://www.readbyqxmd.com/read/29234268/the-evidence-for-the-spread-and-seeding-capacities-of-the-mutant-huntingtin-protein-in-in-vitro-systems-and-their-therapeutic-implications
#14
REVIEW
Maria Masnata, Francesca Cicchetti
Neurodegenerative disorders are not only characterized by specific patterns of cell loss but the presence and accumulation of various pathological proteins-both of which correlate with disease evolution. There is now mounting evidence to suggest that these pathological proteins present with toxic, at times prion-like, properties and can therefore seed pathology in neighboring as well remotely connected healthy neurons as they spread across the brain. What is less clear, at this stage, is how much this actually contributes to, and drives, the core pathogenic events...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29233969/receptor-interacting-protein-140-as-a-co-repressor-of-heat-shock-factor-1-regulates-neuronal-stress-response
#15
Yu-Lung Lin, Hong-Chieh Tsai, Pei-Yao Liu, Michael Benneyworth, Li-Na Wei
Heat shock response (HSR) is a highly conserved transcriptional program that protects organisms against various stressful conditions. However, the molecular mechanisms modulating HSR, especially the suppression of HSR, is poorly understood. Here, we found that RIP140, a wide-spectrum cofactor of nuclear hormone receptors, acts as a co-repressor of heat shock factor 1 (HSF1) to suppress HSR in healthy neurons. When neurons are stressed such as by heat shock or sodium arsenite (As), cells engage specific proteosome-mediated degradation to reduce RIP140 level, thereby relieving the suppression and activating HSR...
December 12, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/29233754/molecular-characterization-tissue-distribution-and-differential-nutritional-regulation-of-putative-elovl5-elongase-in-silver-barb-puntius-gonionotus
#16
Madhusmita Nayak, Avinash Pradhan, Shiba Shankar Giri, Mrinal Samanta, V Badireenath Konkimalla, Ashis Saha
Fatty acid desaturase (Fads) and elongase (Elovl) are two important enzymes involved in the biosynthesis of long-chain polyunsaturated fatty acids (LC-PUFAs) in fishes. Silver barb (Puntius gonionotus) is considered a promising medium carp species for freshwater aquaculture in Asia. Earlier, Δ6 fads cDNA was characterized to understand the molecular mechanism of LC-PUFA biosynthesis in this species. In the present study elovl5-like elongase full-length cDNA was cloned and characterized by RACE (rapid amplification of cDNA ends), and analyzed its basal expression in various organs/tissues by quantitative real time PCR (qRT-PCR) assay...
December 9, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29233537/life-threatening-parkinsonism-hyperpyrexia-syndrome-following-bilateral-deep-brain-stimulation-of-the-subthalamic-nucleus
#17
Mehmet Osman Akçakaya, Nihan Hande Akçakaya, Mustafa Ömür Kasımcan, Talat Kırış
Parkinsonism-hyperpyrexia syndrome (PHS), or neuroleptic malignant syndrome (NMS), is a neurophysiologic reaction to the acute withdrawal/decrease of central dopamine levels. It is a severe complication characterized by rigidity, change in consciousness level, fever, hypertension, and autonomic instability, that can be fatal. To the best of our knowledge, PHS following deep brain stimulation (DBS) of subthalamic nucleus (STN) surgery due to anti-Parkinson drug discontinuation has been previously reported only six times...
December 6, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/29233215/unraveling-amyloid-formation-paths-of-parkinson-s-disease-protein-%C3%AE-synuclein-triggered-by-anionic-vesicles
#18
Juris Kiskis, Istvan Horvath, Pernilla Wittung-Stafshede, Sandra Rocha
Amyloid formation of the synaptic brain protein α-synuclein (αS) is related to degeneration of dopaminergic neurons in Parkinson's disease patients. αS is thought to function in vesicle transport and fusion and it binds strongly to negatively charged vesicles in vitro. Here we combined circular dichroism, fluorescence and imaging methods in vitro to characterize the interaction of αS with negatively charged vesicles of DOPS (1,2-dioleoyl-sn-glycero-3-phospho-L-serine, sodium salt) and DOPG (1,2-dioleoyl-sn-glycero-3-phospho-(1'-rac-glycerol), sodium salt) and the consequences of such interactions on αS amyloid formation...
January 2017: Quarterly Reviews of Biophysics
https://www.readbyqxmd.com/read/29233087/stroke-prevention-rehabilitation-intervention-trial-of-exercise-sprite-a-randomised-feasibility-study
#19
Neil Heron, Frank Kee, Jonathan Mant, Philip M Reilly, Margaret Cupples, Mark Tully, Michael Donnelly
BACKGROUND: The value of cardiac rehabilitation (CR) after a transient ischaemic attack (TIA) or minor stroke is untested despite these conditions sharing similar pathology and risk factors to coronary heart disease. We aimed to evaluate the feasibility of conducting a trial of an adapted home-based CR programme, 'The Healthy Brain Rehabilitation Manual', for patients following a TIA/minor stroke, participants' views on the intervention and, to identify the behaviour change techniques (BCTs) used...
December 12, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29232704/do-early-neural-correlates-of-visual-consciousness-show-the-oblique-effect-a-binocular-rivalry-and-event-related-potential-study
#20
Bradley N Jack, Urte Roeber, Robert P O'Shea
When dissimilar images are presented one to each eye, we do not see both images; rather, we see one at a time, alternating unpredictably. This is called binocular rivalry, and it has recently been used to study brain processes that correlate with visual consciousness, because perception changes without any change in the sensory input. Such studies have used various types of images, but the most popular have been gratings: sets of bright and dark lines of orthogonal orientations presented one to each eye. We studied whether using cardinal rival gratings (vertical, 0°, and horizontal, 90°) versus oblique rival gratings (left-oblique, -45°, and right-oblique, 45°) influences early neural correlates of visual consciousness, because of the oblique effect: the tendency for visual performance to be greater for cardinal gratings than for oblique gratings...
2017: PloS One
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