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Neurological disorders

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https://www.readbyqxmd.com/read/28918515/oligodendrocyte-neuron-interactions-impact-on-myelination-and-brain-function
#1
Takeshi Shimizu, Yasuyuki Osanai, Kazuhiro Ikenaka
In the past, glial cells were considered to be 'glue' cells whose primary role was thought to be merely filling gaps in neural circuits. However, a growing number of reports have indicated the role of glial cells in higher brain function through their interaction with neurons. Myelin was originally thought to be just a sheath structure surrounding neuronal axons, but recently it has been shown that myelin exerts effects on the conduction velocity of neuronal axons even after myelin formation. Therefore, the investigation of glial cell properties and the neuron-glial interactions is important for understanding higher brain function...
September 16, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28918504/autism-spectrum-disorders-and-disease-modeling-using-stem-cells
#2
REVIEW
Anita Brito, Fabiele Baldino Russo, Alysson Renato Muotri, Patricia Cristina Baleeiro Beltrão-Braga
Autism spectrum disorders (ASD) represent a variety of disorders characterized as complex lifelong neurodevelopment disabilities, which may affect the ability of communication and socialization, including typical comportments like repetitive and stereotyped behavior. Other comorbidities are usually present, such as echolalia, hypotonia, intellectual disability and difficulties in processing figured speech. Furthermore, some ASD individuals may present certain abilities, such as eidetic memory, outstanding musical or painting talents and special mathematical skills, among others...
September 16, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28918499/the-levels-of-circulating-proangiogenic-factors-in-migraineurs
#3
Slawomir Michalak, Alicja Kalinowska-Lyszczarz, Danuta Wegrzyn, Anna Thielemann, Krystyna Osztynowicz, Wojciech Kozubski
Migraine has been reported as a risk factor for ischemic stroke or cardiovascular events, and dysfunction of endothelial cells has been evidenced in migraine patients. Proangiogenic factors are potential endothelial stimulators, and their disturbances can link abnormalities of endothelium with increased risk of vascular disorders. The aim of this study was to evaluate the levels of circulating proangiogenic factors in sera of migraineurs during interictal period. Fifty-two patients aged 37.9 ± 9.6 years, fulfilling International Headache Society criteria for migraine, were included in this observational case-control study...
September 16, 2017: Neuromolecular Medicine
https://www.readbyqxmd.com/read/28918268/a-structural-mri-study-of-excoriation-skin-picking-disorder-and-its-relationship-to-clinical-severity
#4
Michael D Harries, Samuel R Chamberlain, Sarah A Redden, Brian L Odlaug, Austin W Blum, Jon E Grant
Excoriation (skin-picking) disorder (SPD) shares symptomology with other obsessive-compulsive and related disorders. Few studies, however, have examined the neurological profile of patients with SPD. This study examined differences in cortical thickness and basal ganglia structural volumes between 20 individuals with SPD and 16 healthy controls using magnetic resonance imaging (MRI). There were no significant differences in demographic variables (age, gender, education and race) between groups. All subjects completed a structural MRI scan and completed a battery of clinical assessments focusing on SPD symptom severity, depression and anxiety symptoms, and quality of life...
September 8, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28916943/emergency-neurological-life-support-acute-non-traumatic-weakness
#5
Anna Finley Caulfield, Oliver Flower, Jose A Pineda, Shahana Uddin
Acute non-traumatic weakness may be life-threatening if it involves the respiratory muscles and/or is associated with autonomic dysfunction. Most patients presenting with acute muscle weakness have a worsening neurological disorder that requires a rapid, systematic evaluation and detailed neurological exam to localize the disorder. Urgent laboratory tests and neuroimaging are needed to confirm the diagnosis. Because acute weakness is a common presenting sign of neurological emergencies, it was chosen as an Emergency Neurological Life Support protocol...
September 15, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28916820/accumulation-of-minor-alleles-and-risk-prediction-in-schizophrenia
#6
Pei He, Xiaoyun Lei, Dejian Yuan, Zuobin Zhu, Shi Huang
Schizophrenia is a common neuropsychiatric disorder with a lifetime risk of 1%. Accumulation of common polygenic variations has been found to be an important risk factor. Recent studies showed a role for the enrichment of minor alleles (MAs) of SNPs in complex diseases such as Parkinson's disease. Here we similarly studied the role of genome wide MAs in schizophrenia using public datasets. Relative to matched controls, schizophrenia cases showed higher average values in minor allele content (MAC) or the average amount of MAs per subject...
September 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28916806/rewiring-of-neuronal-networks-during-synaptic-silencing
#7
Jana Katharina Wrosch, Vicky von Einem, Katharina Breininger, Marc Dahlmanns, Andreas Maier, Johannes Kornhuber, Teja Wolfgang Groemer
Analyzing the connectivity of neuronal networks, based on functional brain imaging data, has yielded new insight into brain circuitry, bringing functional and effective networks into the focus of interest for understanding complex neurological and psychiatric disorders. However, the analysis of network changes, based on the activity of individual neurons, is hindered by the lack of suitable meaningful and reproducible methodologies. Here, we used calcium imaging, statistical spike time analysis and a powerful classification model to reconstruct effective networks of primary rat hippocampal neurons in vitro...
September 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28915908/advances-in-paediatrics-in-2016-current-practices-and-challenges-in-allergy-autoimmune-diseases-cardiology-endocrinology-gastroenterology-infectious-diseases-neonatology-nephrology-neurology-nutrition-pulmonology
#8
REVIEW
Carlo Caffarelli, Francesca Santamaria, Dora Di Mauro, Carla Mastrorilli, Silvia Montella, Sergio Bernasconi
This review reports main progresses in various pediatric issues published in Italian Journal of Pediatrics and in international journals in 2016. New insights in clinical features or complications of several disorders may be useful for our better understanding. They comprise severe asthma, changing features of lupus erythematosus from birth to adolescence, celiac disease, functional gastrointestinal disorders, Moebius syndrome, recurrent pneumonia. Risk factors for congenital heart defects, Kawasaki disease have been widely investigated...
September 16, 2017: Italian Journal of Pediatrics
https://www.readbyqxmd.com/read/28914873/-the-extended-endoscopic-endonasal-transsphenoidal-approach-in-surgery-for-epidermoid-cysts-of-the-chiasmatic-region
#9
D V Fomichev, P L Kalinin, M A Kutin, O I Sharipov, I V Chernov
Surgical treatment for epidermoid cysts of the chiasmatic region is a challenge because of the tendency to a massive spread of epidermoid masses through the cerebrospinal fluid pathways and a significant lesion deviation from the midline. PURPOSE: To analyze capabilities of the extended endoscopic endonasal transsphenoidal approach in surgery for epidermoid cysts. MATERIAL AND METHODS: The study included 6 patients with epidermoid cysts of the chiasmatic region who were operated on using the extended anterior endoscopic endonasal transsphenoidal approach at the Burdenko Neurosurgical Institute in the past 5 years...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28914869/-spinal-dural-arteriovenous-fistulas-a-series-of-clinical-cases-and-an-analysis-of-the-literature-data
#10
K N Babichev, V P Orlov, A V Stanishevskiy, A V Savello, D V Svistov
Spinal dural arteriovenous fistulas (SDAVFs) are the most common vascular malformation of the spinal cord, causing segmental lesions of the spinal cord due to venous ischemia. Functional outcomes of treatment in SDAVF patients are favorable, but the rate of improvement varies from 25 to 100%, which complicates prediction of the treatment outcome. AIM: the study aim was to identify a relationship between fistula localization and clinical manifestations and evaluate the effect of disease duration and severity of neurological impairments on immediate and long-term treatment outcomes, based on analysis of the literature and own data...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28914199/clinical-applications-of-intravenous-immunoglobulins-in-child-neurology
#11
Maria Gogou, Efimia Papadopoulou-Alataki, Martha Spilioti, Sofia Alataki, Athanasios Evangeliou
BACKGROUND: While there are guidelines for the use of intravenous immunoglobulins in children with Guillain-Barre syndrome and myasthenia gravis based on high-level evidence studies, data is fewer for the majority of neurologic disorders in this age group. Neuronal antibodies are detected in children with seizures of autoimmune etiology. Intravenous immunoglobulins with their broad immunomodulatory mechanism of action could be ideally effective in different forms of immune-dysregulated intractable epilepsies such as autoimmune epilepsy and autoimmune Rasmussen encephalitis...
September 15, 2017: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/28913915/home-use-remotely-supervised-and-remotely-controlled-transcranial-direct-current-stimulation-a-systematic-review-of-the-available-evidence
#12
REVIEW
Ulrich Palm, Ulrike Kumpf, Nora Behler, Linda Wulf, Beatrice Kirsch, Jana Wörsching, Daniel Keeser, Alkomiet Hasan, Frank Padberg
OBJECTIVES: Transcranial direct current stimulation (tDCS) is gaining growing importance in the treatment of neurological and psychiatric disorders and is currently investigated for home-based and remotely supervised applications. METHODS: Here, we systematically review the available evidence from a database search (PubMed, ICTRP, clinicaltrials.gov) from January 2000 to May 2017. RESULTS: We detected 22 original research papers, trial protocols or trial registrations dealing with tDCS as an add-on intervention to cognitive or physiotherapeutic intervention...
September 15, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28913702/impaired-fertility-and-motor-function-in-a-zebrafish-model-for-classic-galactosemia
#13
Jo M Vanoevelen, M Estela Rubio-Gozalbo, Britt van Erven, Jörgen Bierau, Xiaoping Huang, Gerard T Berry, Rein Vos, Ana I Coelho
Classic galactosemia is a genetic disorder of galactose metabolism, caused by severe deficiency of galactose-1-phosphate uridylyltransferase (GALT) enzyme activity due to mutations of the GALT gene. Its pathogenesis is still not fully elucidated, and a therapy that prevents chronic impairments is lacking. In order to move research forward, there is a high need for a novel animal model, which allows organ studies throughout development and high-throughput screening of pharmacologic compounds. Here, we describe the generation of a galt knockout zebrafish model and present its phenotypical characterization...
September 14, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28913349/brain-computer-interface-for-clinical-purposes-cognitive-assessment-and-rehabilitation
#14
REVIEW
Laura Carelli, Federica Solca, Andrea Faini, Paolo Meriggi, Davide Sangalli, Pietro Cipresso, Giuseppe Riva, Nicola Ticozzi, Andrea Ciammola, Vincenzo Silani, Barbara Poletti
Alongside the best-known applications of brain-computer interface (BCI) technology for restoring communication abilities and controlling external devices, we present the state of the art of BCI use for cognitive assessment and training purposes. We first describe some preliminary attempts to develop verbal-motor free BCI-based tests for evaluating specific or multiple cognitive domains in patients with Amyotrophic Lateral Sclerosis, disorders of consciousness, and other neurological diseases. Then we present the more heterogeneous and advanced field of BCI-based cognitive training, which has its roots in the context of neurofeedback therapy and addresses patients with neurological developmental disorders (autism spectrum disorder and attention-deficit/hyperactivity disorder), stroke patients, and elderly subjects...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28912708/remodeling-pearson-s-correlation-for-functional-brain-network-estimation-and-autism-spectrum-disorder-identification
#15
Weikai Li, Zhengxia Wang, Limei Zhang, Lishan Qiao, Dinggang Shen
Functional brain network (FBN) has been becoming an increasingly important way to model the statistical dependence among neural time courses of brain, and provides effective imaging biomarkers for diagnosis of some neurological or psychological disorders. Currently, Pearson's Correlation (PC) is the simplest and most widely-used method in constructing FBNs. Despite its advantages in statistical meaning and calculated performance, the PC tends to result in a FBN with dense connections. Therefore, in practice, the PC-based FBN needs to be sparsified by removing weak (potential noisy) connections...
2017: Frontiers in Neuroinformatics
https://www.readbyqxmd.com/read/28912698/altered-rich-club-and-frequency-dependent-subnetwork-organization-in-mild-traumatic-brain-injury-a-meg-resting-state-study
#16
Marios Antonakakis, Stavros I Dimitriadis, Michalis Zervakis, Andrew C Papanicolaou, George Zouridakis
Functional brain connectivity networks exhibit "small-world" characteristics and some of these networks follow a "rich-club" organization, whereby a few nodes of high connectivity (hubs) tend to connect more densely among themselves than to nodes of lower connectivity. The Current study followed an "attack strategy" to compare the rich-club and small-world network organization models using Magnetoencephalographic (MEG) recordings from mild traumatic brain injury (mTBI) patients and neurologically healthy controls to identify the topology that describes the underlying intrinsic brain network organization...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28912414/polish-experience-with-liver-transplantation-and-post-transplant-outcomes-in-children-with-urea-cycle-disorders
#17
Edyta Szymańska, Piotr Kaliciński, Joanna Pawłowska, Sylwia Szymańska, Maciej Pronicki, Marek Stefanowicz, Joanna Teisseyre, Dorota Broniszczak, Dariusz Rokicki
BACKGROUND Liver transplantation (LT) is recommended for various metabolic diseases, including urea cycle disorders (UCDs). The aim of this study was to determine indications and outcomes of LT for UCDs in the tertiary reference Children's Hospital in Warsaw, Poland. MATERIAL AND METHODS Medical charts of children with UCD who underwent LT between 2008 and July 2016 were retrospectively reviewed. The following parameters were analyzed: symptoms at time of diagnosis, age at diagnosis, age at transplantation, graft characteristics and survival, postsurgical complications, and biochemical and laboratory results before and after transplantation...
September 15, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28912161/disruption-of-bmal1-impairs-blood-brain-barrier-integrity-via-pericyte-dysfunction
#18
Ryota Nakazato, Kenji Kawabe, Daisuke Yamada, Shinsuke Ikeno, Michihiro Mieda, Shigeki Shimba, Eiichi Hinoi, Yukio Yoneda, Takeshi Takarada
Circadian rhythm disturbances are well-established in neurological diseases. However, how these disruptions cause homeostatic imbalances remains poorly understood. Brain and muscle aryl hydrocarbon receptor nuclear translocator-like protein 1 (Bmal1) is a major circadian clock transcriptional activator, and Bmal1 deficiency in male Bmal1nestin(-/-) mice induced marked astroglial activation without affecting the number of astrocytes in the brain and spinal cord. Bmal1 deletion caused blood-brain barrier (BBB) hyperpermeability with an age-dependent loss of pericyte coverage of blood vessels in the brain...
September 14, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28912059/piracetam-inhibits-ethanol-etoh-induced-memory-deficit-by-mediating-multiple-pathways
#19
Yifan Yang, Jian Feng, Fangyuan Xu, Jianglin Wang
Excessive ethanol (EtOH) intake, especially to prenatal exposure, can significantly affect cognitive function and cause permanent learning and memory injures in children. As a result, how to protect children from EtOH neurotoxicity has gained increasing attention in recent years. Piracetam (Pir) is a nootropic drug derived from c-aminobutyric acid and can manage cognition impairments in multiple neurological disorders. Studies have shown that Pir can exert therapeutic effects on EtOH-induced memory impairments, but the underlying mechanism is still unknown...
September 11, 2017: Brain Research
https://www.readbyqxmd.com/read/28911972/sex-specific-effects-of-developmental-lead-exposure-on-the-immune-neuroendocrine-network
#20
REVIEW
Jane Kasten-Jolly, David A Lawrence
The environmental toxicant lead (Pb) has long been known to induce neurological deficits. The 1st century Greek physician Pedanius Dioscorides noted that "lead makes the mind give way". Current studies are suggesting the effects of Pb on behaviors may involve the immune system and conversely some immunomodulatory changes may be due to Pb effects in the central nervous system. Although Pb-induced disorders do not appear to discriminate among females and males, this report discusses the differences observed in human and animal studies regarding differential gender effects on gene expression after Pb exposure...
September 11, 2017: Toxicology and Applied Pharmacology
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