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https://www.readbyqxmd.com/read/29342042/long-term-administration-of-salicylate-induced-changes-in-bdnf-expression-and-creb-phosphorylation-in-the-auditory-cortex-of-rats
#1
Bin Yi, Cong Wu, Runjie Shi, Kun Han, Haibin Sheng, Bei Li, Ling Mei, Xueling Wang, Zhiwu Huang, Hao Wu
HYPOTHESIS: We investigated whether salicylate induces tinnitus through alteration of the expression levels of brain-derived neurotrophic factor (BDNF), proBDNF, tyrosine kinase receptor B (TrkB), cAMP-responsive element-binding protein (CREB), and phosphorylated CREB (p-CREB) in the auditory cortex (AC). BACKGROUND: Salicylate medication is frequently used for long-term treatment in clinical settings, but it may cause reversible tinnitus. Salicylate-induced tinnitus is associated with changes related to central auditory neuroplasticity...
January 16, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29301440/advancing-the-understanding-of-progression-in-multiple-sclerosis-an-interview-with-shibeshih-belachew
#2
Shibeshih Belachew
Shibeshih Belachew speaks to Laura Dormer, Commissioning Editor: Dr Shibeshih Belachew, MD, PhD, is a Senior Medical Director for Multiple Sclerosis (MS) Disease Area in Global Product Development Medical Affairs at Roche (Basel, Switzerland). Prior to joining Roche in January 2016, he was Director of MS Franchise and Head of Medical Director's office for Biogen Region Europe and Canada. Previously at Biogen he also served as a Director in Global Neurology for the natalizumab program in Cambridge (MA, USA)...
January 5, 2018: Neurodegenerative Disease Management
https://www.readbyqxmd.com/read/29287214/favorable-adverse-effect-profile-of-brivaracetam-vs-levetiracetam-in-a-preclinical-model
#3
Nathalie T Sanon, Jonathan Gagné, Daniele C Wolf, Soumia Aboulamer, Ciprian M Bosoi, Alexe Simard, Estelle Messiet, Sébastien Desgent, Lionel Carmant
Levetiracetam (LEV), and its newer selective analog brivaracetam (BRV), are two seizure medications that share an innovative mechanism of action targeting the Synaptic Vesicle Protein 2A (SV2A), altering neurotransmitter release and decreasing seizure frequency. Behavioral changes are the most significant adverse effects reported by patients taking LEV. We hypothesize that BRV, the more potent SV2A analog, could exert less behavioral side effects, as it requires lower doses than LEV. Using Kainic Acid (KA)-treated and control rats, we measured adverse behavioral effect profiles of LEV, BRV, or Saline, on social and nonsocial behaviors...
December 26, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29279015/rodent-neural-progenitor-cells-support-functional-recovery-after-cervical-spinal-cord-contusion
#4
John H Brock, Lori Graham, Eileen Staufenberg, Sarah Im, Mark H Tuszynski
Previously others and we have shown that rodent neural progenitor cells (NPCs) can support functional recovery following cervical and thoracic transection injuries. To extend these observations to a more clinically relevant model of spinal cord injury, we performed unilateral mid-cervical contusion injuries in Fischer 344 rats. Two-weeks later, E14-derived syngeneic spinal cord-derived neural progenitor cells were implanted into the lesion cavity. Control animals received either no grafts or fibroblast grafts...
December 26, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29278784/elucidating-the-biogeographical-variation-of-the-venom-of-naja-naja-spectacled-cobra-from-pakistan-through-a-venom-decomplexing-proteomic-study
#5
Kin Ying Wong, Choo Hock Tan, Kae Yi Tan, Quraishi H Naeem, Nget Hong Tan
Naja naja is a medically important species that is distributed widely in South Asia. Its venom lethality and neutralization profile have been reported to vary markedly, but the understanding of this phenomenon has been limited without a comprehensive venom profile for the Pakistani N. naja. This study set to investigate the venom proteome of Pakistani N. naja applying reverse-phase HPLC, SDS-PAGE, mass spectrometry and data-mining approaches. The venom enzymatics and antigen binding activities were also studied...
December 23, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/29258368/lisdexamfetamine-chemistry-pharmacodynamics-pharmacokinetics-and-clinical-efficacy-safety-and-tolerability-in-the-treatment-of-binge-eating-disorder
#6
Kristen Ward, Leslie Citrome
The indications for lisdexamfetamine (LDX), a central nervous system stimulant, were recently expanded to include treatment of moderate to severe binge eating disorder (BED). Areas covered: This review aims to describe the chemistry and pharmacology of LDX, as well as the clinical trials investigating the efficacy and safety of this medication for the management of BED. Expert opinion: LDX is the first medication with United States Food and Drug Administration approval for the treatment of BED. It is an inactive prodrug of d-amphetamine that extends the half-life of d-amphetamine to allow for once daily dosing...
January 4, 2018: Expert Opinion on Drug Metabolism & Toxicology
https://www.readbyqxmd.com/read/29235396/brain-derived-neurotrophic-factor-bdnf-serum-level-in-women-with-first-episode-depression-correlation-with-clinical-and-metabolic-parameters
#7
Maria Skibinska, Pawel Kapelski, Aleksandra Rajewska-Rager, Joanna Pawlak, Aleksandra Szczepankiewicz, Beata Narozna, Joanna Twarowska-Hauser, Monika Dmitrzak-Weglarz
BACKGROUND: Brain-derived neurotrophic factor (BDNF) influences neuron differentiation during development, as well as the synaptic plasticity and neuron survival in adulthood. BDNF has been implicated in the pathogenesis of psychiatric disorders and its serum level is a potential biomarker for depression. The aim of this study was to examine serum levels of BDNF in first-episode depression and its correlation with clinical and metabolic parameters. MATERIALS AND METHODS: The study was performed on a group of 60 women: 30 diagnosed with a first-episode of depression and 30 healthy controls...
December 13, 2017: Nordic Journal of Psychiatry
https://www.readbyqxmd.com/read/29209585/video-microscope-robotic-arm-assisted-neuronavigation-guided-glioma-resection-and-regional-sampling
#8
Muhammad Waqas, Syed Ather Enam, Fauzan A Hashmi, Fatima Mubarak, Fazal Arain
High-grade gliomas possess internal pathological heterogeneity. Selective sampling of different tumor regions can help in the study of this heterogeneity. In this report, we have described the use of a novel navigation and optical system for the selective regional sampling of a high-grade glioma lesion. A 45-year-old gentleman presented to us with complaints of intermittent frontal headaches for past eight months. On examination, he had subtle pyramidal weakness in left upper and lower extremities. Magnetic resonance imaging (MRI) showed a large contrast-enhancing, space-occupying lesion in the right frontal lobe causing perilesional edema and midline shift...
October 2, 2017: Curēus
https://www.readbyqxmd.com/read/29198469/novel-small-molecule-inhibitors-of-protein-kinase%C3%A2-c-epsilon-reduce-ethanol-consumption-in%C3%A2-mice
#9
Angelo Blasio, Jingyi Wang, Dan Wang, Florence P Varodayan, Matthew B Pomrenze, Jacklyn Miller, Anna M Lee, Thomas McMahon, Sandeep Gyawali, Hua-Yu Wang, Marisa Roberto, Stanton McHardy, Michael A Pleiss, Robert O Messing
BACKGROUND: Despite the high cost and widespread prevalence of alcohol use disorders, treatment options are limited, underscoring the need for new, effective medications. Previous results using protein kinase C epsilon (PKCε) knockout mice, RNA interference against PKCε, and peptide inhibitors of PKCε predict that small-molecule inhibitors of PKCε should reduce alcohol consumption in humans. METHODS: We designed a new class of PKCε inhibitors based on the Rho-associated protein kinase (ROCK) inhibitor Y-27632...
December 1, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29188166/tractography-for-optic-radiation-preservation-in-transcortical-approaches-to-intracerebral-lesions
#10
Vijay Agarwal, James G Malcolm, Gustavo Pradilla, Daniel L Barrow
We present a case of intraventricular meningioma resected via a transcortical approach using tractography for optic radiation and arcuate fasciculus preservation. We include a review of the literature. A 54-year-old woman with a history of breast cancer presented with gait imbalance. Workup revealed a mass in the atrium of the left lateral ventricle consistent with a meningioma. Whole brain automated diffusion tensor imaging (DTI) was used to plan a transcortical resection while sparing the optic radiations and arcuate fasciculus...
September 28, 2017: Curēus
https://www.readbyqxmd.com/read/29188165/diffusion-tensor-imaging-for-ruptured-cerebral-arteriovenous-malformation
#11
Muhammad Waqas, Ayesha Siddiqui, Fatima Mubarak, Syed Ather Enam
Non-ruptured arteriovenous malformations (AVMs) rarely cause tract disruption. Few studies have described how ruptured AVMs influence white matter (WM) tract morphology. We reviewed consecutive AVM cases treated at a tertiary care hospital where diffusion tensor imaging (DTI) tractography was obtained preoperatively. DTI was performed using the Synaptive Plan (Synaptive Medical Inc., Toronto, Canada). Quality control was performed by clinical application specialist. Perinidal fractional anisotropy (FA) value of corticospinal tracts (CST) was obtained...
September 28, 2017: Curēus
https://www.readbyqxmd.com/read/29180982/resveratrol-for-easing-status-epilepticus-induced-brain-injury-inflammation-epileptogenesis-and-cognitive-and-memory-dysfunction-are-we-there-yet
#12
REVIEW
Olagide W Castro, Dinesh Upadhya, Maheedhar Kodali, Ashok K Shetty
Status epilepticus (SE) is a medical emergency exemplified by self-sustaining, unceasing seizures or swiftly recurring seizure events with no recovery between seizures. The early phase after SE event is associated with neurodegeneration, neuroinflammation, and abnormal neurogenesis in the hippocampus though the extent of these changes depends on the severity and duration of seizures. In many instances, over a period, the initial precipitating injury caused by SE leads to temporal lobe epilepsy (TLE), typified by spontaneous recurrent seizures, cognitive, memory and mood impairments associated with chronic inflammation, reduced neurogenesis, abnormal synaptic reorganization, and multiple molecular changes in the hippocampus...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29160301/new-insights-into-the-pharmacogenomics-of-antidepressant-response-from-the-gendep-and-star-d-studies-rare-variant-analysis-and-high-density-imputation
#13
C Fabbri, K E Tansey, R H Perlis, J Hauser, N Henigsberg, W Maier, O Mors, A Placentino, M Rietschel, D Souery, G Breen, C Curtis, L Sang-Hyuk, S Newhouse, H Patel, M Guipponi, N Perroud, G Bondolfi, M O'Donovan, G Lewis, J M Biernacka, R M Weinshilboum, A Farmer, K J Aitchison, I Craig, P McGuffin, R Uher, C M Lewis
Genome-wide association studies have generally failed to identify polymorphisms associated with antidepressant response. Possible reasons include limited coverage of genetic variants that this study tried to address by exome genotyping and dense imputation. A meta-analysis of Genome-Based Therapeutic Drugs for Depression (GENDEP) and Sequenced Treatment Alternatives to Relieve Depression (STAR*D) studies was performed at the single-nucleotide polymorphism (SNP), gene and pathway levels. Coverage of genetic variants was increased compared with previous studies by adding exome genotypes to previously available genome-wide data and using the Haplotype Reference Consortium panel for imputation...
November 21, 2017: Pharmacogenomics Journal
https://www.readbyqxmd.com/read/29153862/tumor-necrosis-factor-alpha-in-sleep-regulation
#14
REVIEW
Matthew D Rockstrom, Liangyu Chen, Ping Taishi, Joseph T Nguyen, Cody M Gibbons, Sigrid C Veasey, James M Krueger
This review details tumor necrosis factor alpha (TNF) biology and its role in sleep, and describes how TNF medications influence sleep/wake activity. Substantial evidence from healthy young animals indicates acute enhancement or inhibition of endogenous brain TNF respectively promotes and inhibits sleep. In contrast, the role of TNF in sleep in most human studies involves pathological conditions associated with chronic elevations of systemic TNF and disrupted sleep. Normalization of TNF levels in such patients improves sleep...
November 16, 2017: Sleep Medicine Reviews
https://www.readbyqxmd.com/read/29122629/long-term-cilostazol-administration-prevents-age-related-decline-of-hippocampus-dependent-memory-in-mice
#15
Shuichi Yanai, Hideki Ito, Shogo Endo
Phosphodiesterases (PDEs) are enzymes that hydrolyze and inactivate 3', 5'-cyclic adenosine monophosphate (cAMP) and/or 3', 5'-cyclic guanosine monophosphate (cGMP). The regulation of intracellular signaling pathways mediated by cyclic nucleotides is imperative to synaptic plasticity and memory in animals. Because PDEs play an important role in this regulation, PDE inhibitors are considered as candidate compounds for treating cognitive and memory disorders. In the present study, we tested whether cilostazol, a selective PDE3 inhibitor, prevents the cognitive deterioration that occurs during the course of normal aging in mice...
November 6, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29115280/real-time-cerebellar-neuroprosthetic-system-based-on-a-spiking-neural-network-model-of-motor-learning
#16
Tao Xu, Na Xiao, Xiaolong Zhai, Pak Kwan Chan, Chung Tin
Damage to the brain, as a result of various medical conditions, impacts everyday life of patients and there is still no complete cure to neurological disorders. Neuroprostheses that can functionally replace the damaged neural circuit have recently emerged as a possible solution to these problems. Here we describe the development of a real-time cerebellar neuroprosthetic system to substitute neural function in cerebellar circuitry for learning delay eyeblink conditioning (DEC). Approach: The system was empowered by a biologically realistic spiking neural network (SNN) model of the cerebellar neural circuit, which considers the neuronal population and anatomical connectivity of the network...
November 8, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/29102278/incidence-of-high-risk-radiologic-features-in-patients-without-local-recurrence-after-stereotactic-ablative-radiation-therapy-for-early-stage-non-small-cell-lung-cancer
#17
M I Ronden, J R van Sörnsen de Koste, C Johnson, B J Slotman, F O B Spoelstra, C J A Haasbeek, G Blom, E M Bongers, A Warner, A Ward, D Palma, S Senan
PURPOSE: To investigate, in the setting of stereotactic ablative radiation therapy (SABR) for early-stage non-small cell lung cancer, the incidence and patterns of change in high-risk radiologic features (HRFs) in patients known to have no local recurrence. METHODS AND MATERIALS: Computed tomography (CT) scans of patients treated using volumetric modulated arc therapy SABR between 2008 and 2013 were eligible if follow-up scans were available for 2 years and no local recurrences were diagnosed...
September 22, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29097328/lovastatin-suppresses-hyperexcitability-and-seizure-in-angelman-syndrome-model
#18
Leeyup Chung, Alexandra L Bey, Aaron J Towers, Xinyu Cao, Il Hwan Kim, Yong-Hui Jiang
Epilepsy is prevalent and often medically intractable in Angelman syndrome (AS). AS mouse model (Ube3a(m-/p+)) shows reduced excitatory neurotransmission but lower seizure threshold. The neural mechanism linking the synaptic dysfunction to the seizure remains elusive. We show that the local circuits of Ube3a(m-/p+)in vitro are hyperexcitable and display a unique epileptiform activity, a phenomenon that is reminiscent of the finding in fragile X syndrome (FXS) mouse model. Similar to the FXS model, lovastatin suppressed the epileptiform activity and audiogenic seizures in Ube3a(m-/p+)...
October 31, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/29095069/effects-of-tryptophan-depletion-on-selective-serotonin-reuptake-inhibitor-remitted-patients-with-obsessive-compulsive-disorder
#19
Sean D Hood, Annabel Broyd, Hayley Robinson, Jessica Lee, Abdul-Rahman Hudaib, Dana A Hince
BACKGROUND: Serotonergic antidepressants are first-line medication therapies for obsessive-compulsive disorder, however it is not known if synaptic serotonin availability is important for selective serotonin reuptake inhibitor efficacy. The present study tested the hypothesis that temporary reduction in central serotonin transmission, through acute tryptophan depletion, would result in an increase in anxiety in selective serotonin reuptake inhibitor-remitted obsessive-compulsive disorder patients...
December 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/29069823/microrna-134-plasma-levels-before-and-after-treatment-with-valproic-acid-for-epilepsy-patients
#20
Xiaofeng Wang, Yifeng Luo, Shuangxi Liu, Liming Tan, Sanhu Wang, Rongyong Man
BACKGROUND: Temporal lobe epilepsy is the second most common neurological disorders characterized by recurrent spontaneous seizures. MicroRNAs play a vital role in regulating synaptic plasticity, brain development and post-transcriptional expression of proteins. In both animal models of epilepsy and human patients, miR-134, a brain-specific microRNA has recently been identified as a potential regulator of epileptogenesis. METHODS: microRNA identified as targets for the actions of valproic acid (VPA) are known to have important effects in brain function...
September 22, 2017: Oncotarget
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