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Functional neurological disorder

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https://www.readbyqxmd.com/read/28441636/psychological-features-and-quality-of-life-in-50-adult-patients-with-epilepsy-and-their-caregivers-from-the-lecco-epilepsy-center-italy
#1
Alessandra Petruzzi, Andrea Rigamonti, Claudia Yvonne Finocchiaro, Paolo Borelli, Elena Lamperti, Antonio Silvani, Rossana Regazzoni, Lorenzo Stanzani, Andrea Salmaggi
Epilepsy is one of the most common neurological disorders. To the best of our knowledge, in Italy, the relationship between patients' and caregivers' psychological state has rarely been analyzed. Thus, we sought to evaluate both the psychological state of patients with epilepsy and that of their caregivers and the interrelationship between them. We also assessed the existing relation between psychological features and some clinical and demographic information, such as number of antiepileptic drugs (AEDs), epilepsy duration and education level of patients and their caregivers...
April 22, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28441414/regional-early-and-progressive-loss-of-brain-pericytes-but-not-vascular-smooth-muscle-cells-in-adult-mice-with-disrupted-platelet-derived-growth-factor-receptor-%C3%AE-signaling
#2
Angeliki Maria Nikolakopoulou, Zhen Zhao, Axel Montagne, Berislav V Zlokovic
Pericytes regulate key neurovascular functions of the brain. Studies in pericyte-deficient transgenic mice with aberrant signaling between endothelial-derived platelet-derived growth factor BB (PDGF-BB) and platelet-derived growth factor receptor β (PDGFRβ) in pericytes have contributed to better understanding of the role of pericytes in the brain. Here, we studied PdgfrβF7/F7 mice, which carry seven point mutations that disrupt PDGFRβ signaling causing loss of pericytes and vascular smooth muscle cells (VSMCs) in the developing brain...
2017: PloS One
https://www.readbyqxmd.com/read/28441394/maternal-obese-type-gut-microbiota-differentially-impact-cognition-anxiety-and-compulsive-behavior-in-male-and-female-offspring-in-mice
#3
Annadora J Bruce-Keller, Sun-Ok Fernandez-Kim, R Leigh Townsend, Claudia Kruger, Richard Carmouche, Susan Newman, J Michael Salbaum, Hans-Rudolf Berthoud
Maternal obesity is known to predispose offspring to metabolic and neurodevelopmental abnormalities. While the mechanisms underlying these phenomena are unclear, high fat diets dramatically alter intestinal microbiota, and gut microbiota can impact physiological function. To determine if maternal diet-induced gut dysbiosis can disrupt offspring neurobehavioral function, we transplanted high fat diet- (HFD) or control low fat diet-associated (CD) gut microbiota to conventionally-housed female mice. Recipient mice were then bred and the behavioral phenotype of male and female offspring was tracked...
2017: PloS One
https://www.readbyqxmd.com/read/28436627/-temporal-lobe-epilepsy-and-adult-hippocampal-neurogenesis
#4
Liying Chen, Yi Wang, Zhong Chen
Temporal lobe epilepsy (TLE) is a common and severe neurological disorder which is often intractable. It can not only damage the normal structure and function of hippocampus, but also affect the neurogenesis in dentate gyrus (DG). It is well documented from researches on the animal models of TLE that after a latent period of several days, prolonged seizure activity leads to a dramatic increase in mitotic activity in the hippocampal DG. However, cell proliferation returns to baseline levels within 3-4 weeks after status epilepticus (SE)...
January 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/28434123/conversion-disorder-functional-neurological-symptom-disorder-and-chronic-pain-comorbidity-assessment-and-treatment
#5
REVIEW
Patricia Tsui, Andrew Deptula, Derek Y Yuan
PURPOSE OF REVIEW: This paper examines the overlap of conversion disorder with chronic pain conditions, describes ways to assess for conversion disorder, and provides an overview of evidence-based treatments for conversion disorder and chronic pain, with a focus on conversion symptoms. RECENT FINDINGS: Conversion disorder is a significant problem that warrants further study, given that there are not many well-established guidelines. Accurate and timely assessment should help move treatment in a more fruitful direction and avoid unnecessary medical interventions...
June 2017: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/28434057/predictive-control-of-intersegmental-tarsal-movements-in-an-insect
#6
Alicia Costalago-Meruelo, David M Simpson, Sandor M Veres, Philip L Newland
In many animals intersegmental reflexes are important for postural and movement control but are still poorly undesrtood. Mathematical methods can be used to model the responses to stimulation, and thus go beyond a simple description of responses to specific inputs. Here we analyse an intersegmental reflex of the foot (tarsus) of the locust hind leg, which raises the tarsus when the tibia is flexed and depresses it when the tibia is extended. A novel method is described to measure and quantify the intersegmental responses of the tarsus to a stimulus to the femoro-tibial chordotonal organ...
April 22, 2017: Journal of Computational Neuroscience
https://www.readbyqxmd.com/read/28433837/internal-maxillary-bypass-for-complex-pediatric-aneurysms
#7
Long Wang, Shuaibin Lu, Hai Qian, Xiang'en Shi
BACKGROUND: Complex pediatric aneurysms (PAs) are an unusual clinicopathologic entity, and data remain limited regarding the use of a bypass procedure to treat this formidable disorder. METHODS: Internal maxillary artery (IMA) to middle cerebral artery (MCA) bypass with radial artery graft (RAG) was utilized to isolate PAs. Bypass patency and aneurysm stability were evaluated using intraoperative Doppler ultrasound, indocyanine green videoangiography and postoperative angiography...
April 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28433711/mdh2-is-an-rna-binding-protein-involved-in-downregulation-of-sodium-channel-scn1a-expression-under-seizure-condition
#8
Yong-Hong Chen, Shu-Jing Liu, Mei-Mei Gao, Tao Zeng, Guo-Wang Lin, Na-Na Tan, Hui-Ling Tang, Ping Lu, Tao Su, Wei-Wen Sun, Long-Chang Xie, Yong-Hong Yi, Yue-Sheng Long
Voltage-gated sodium channel α-subunit type I (NaV1.1, encoded by SCN1A gene) plays a critical role in the excitability of brain. Downregulation of SCN1A expression is associated with epilepsy, a common neurological disorder characterized by recurrent seizures. Here we reveal a novel role of malate dehydrogenase 2 (MDH2) in the posttanscriptional regulation of SCN1A expression under seizure condition. We identified that MDH2 was an RNA binding protein that could bind two of the four conserved regions in the 3' UTRs of SCN1A...
April 19, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28433105/symptomatic-treatment-of-neurologic-symptoms-in-wilson-disease
#9
Tomasz Litwin, Petr Dušek, Anna Członkowska
Wilson disease (WD) is a potentially treatable neurodegenerative disorder. In the majority of cases, treatment with drugs that induce a negative copper balance (usually chelators or zinc salts) leads to improvements in liver function and neurologic signs. However, some patients show severe neurologic symptoms at diagnosis, such as tremor, dystonia, parkinsonism, and chorea. In this patient group, some neurologic deficits may persist despite adequate treatment, and further neurologic deterioration may be observed after treatment initiation...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28431241/akt-pkb-signaling-navigating-the-network
#10
REVIEW
Brendan D Manning, Alex Toker
The Ser and Thr kinase AKT, also known as protein kinase B (PKB), was discovered 25 years ago and has been the focus of tens of thousands of studies in diverse fields of biology and medicine. There have been many advances in our knowledge of the upstream regulatory inputs into AKT, key multifunctional downstream signaling nodes (GSK3, FoxO, mTORC1), which greatly expand the functional repertoire of AKT, and the complex circuitry of this dynamically branching and looping signaling network that is ubiquitous to nearly every cell in our body...
April 20, 2017: Cell
https://www.readbyqxmd.com/read/28430709/vitamin-d3-repressed-astrocyte-activation-following-lipopolysaccharide-stimulation-in-vitro-and-in-neonatal-rats
#11
Ke-Ping Jiao, Shao-Min Li, Wen-Yan Lv, Ming-Liang Jv, Hai-Yan He
Vitamin D3 has been reported to be an immunity modulator and high levels of vitamin D3 are correlated with a decreased risk for developing diseases in the central nervous system. Astrocytes are important immune cells and contribute toward inflammation during neurological diseases. The vitamin D receptor has been reported to be expressed in astrocytes; however, the effect of vitamin D3 on astrocyte activation has not been studied. Here, we found that lipopolysaccharide stimulation in astrocytes could enhance the expression of vitamin D receptor and Cyp27B1, which encodes the enzyme for converting vitamin D3 into its active form...
April 20, 2017: Neuroreport
https://www.readbyqxmd.com/read/28429801/the-dizzy-patient-don-t-forget-disorders-of-the-central-vestibular-system
#12
REVIEW
Thomas Brandt, Marianne Dieterich
Vertigo and dizziness are among the most common complaints in neurology clinics, and they account for about 13% of the patients entering emergency units. In this Review, we focus on central vestibular disorders, which are mostly attributable to acute unilateral lesions of the bilateral vestibular circuitry in the brain. In a tertiary interdisciplinary outpatient dizziness unit, central vestibular disorders, including vestibular migraine, comprise about 25% of the established diagnoses. The signs and symptoms of these disorders can mimic those of peripheral vestibular disorders with sustained rotational vertigo...
April 21, 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28428630/hinge-deleted-igg4-blocker-therapy-for-acetylcholine-receptor-myasthenia-gravis-in-rhesus-monkeys
#13
Mario Losen, Aran F Labrijn, Vivianne H van Kranen-Mastenbroek, Maarten L Janmaat, Krista G Haanstra, Frank J Beurskens, Tom Vink, Margreet Jonker, Bert A 't Hart, Marina Mané-Damas, Peter C Molenaar, Pilar Martinez-Martinez, Eline van der Esch, Janine Schuurman, Marc H de Baets, Paul W H I Parren
Autoantibodies against ion channels are the cause of numerous neurologic autoimmune disorders. Frequently, such pathogenic autoantibodies have a restricted epitope-specificity. In such cases, competing antibody formats devoid of pathogenic effector functions (blocker antibodies) have the potential to treat disease by displacing autoantibodies from their target. Here, we have used a model of the neuromuscular autoimmune disease myasthenia gravis in rhesus monkeys (Macaca mulatta) to test the therapeutic potential of a new blocker antibody: MG was induced by passive transfer of pathogenic acetylcholine receptor-specific monoclonal antibody IgG1-637...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28427329/cross-disorder-comparative-analysis-of-comorbid-conditions-reveals-novel-autism-candidate-genes
#14
Leticia Diaz-Beltran, Francisco J Esteban, Maya Varma, Alp Ortuzk, Maude David, Dennis P Wall
BACKGROUND: Numerous studies have highlighted the elevated degree of comorbidity associated with autism spectrum disorder (ASD). These comorbid conditions may add further impairments to individuals with autism and are substantially more prevalent compared to neurotypical populations. These high rates of comorbidity are not surprising taking into account the overlap of symptoms that ASD shares with other pathologies. From a research perspective, this suggests common molecular mechanisms involved in these conditions...
April 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28427283/break-induced-replication-in-eukaryotes-mechanisms-functions-and-consequences
#15
Cynthia J Sakofsky, Anna Malkova
Break-induced replication (BIR) is an important pathway specializing in repair of one-ended double-strand DNA breaks (DSBs). This type of DSB break typically arises at collapsed replication forks or at eroded telomeres. BIR initiates by invasion of a broken DNA end into a homologous template followed by initiation of DNA synthesis that can proceed for hundreds of kilobases. This synthesis is drastically different from S-phase replication in that instead of a replication fork, BIR proceeds via a migrating bubble and is associated with conservative inheritance of newly synthesized DNA...
April 21, 2017: Critical Reviews in Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28427143/activity-induced-spontaneous-spikes-in-gabaergic-neurons-suppress-seizure-discharges-an-implication-of-computational-modeling
#16
Wei Lu, Jing Feng, Bo Wen, Kewei Wang, Jin-Hui Wang
BACKGROUND: Epilepsy, a prevalent neurological disorder, appears self-termination. The endogenous mechanism for seizure self-termination remains to be addressed in order to develop new strategies for epilepsy treatment. We aim to examine the role of activity-induced spontaneous spikes at GABAergic neurons as an endogenous mechanism in the seizure self-termination. METHODS AND RESULTS: Neuronal spikes were induced by depolarization pulses at cortical GABAergic neurons from temporal lobe epilepsy patients and mice, in which some of these neurons fired activity-induced spontaneous spikes...
February 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28426964/ipsc-derived-human-microglia-like-cells-to-study-neurological-diseases
#17
Edsel M Abud, Ricardo N Ramirez, Eric S Martinez, Luke M Healy, Cecilia H H Nguyen, Sean A Newman, Andriy V Yeromin, Vanessa M Scarfone, Samuel E Marsh, Cristhian Fimbres, Chad A Caraway, Gianna M Fote, Abdullah M Madany, Anshu Agrawal, Rakez Kayed, Karen H Gylys, Michael D Cahalan, Brian J Cummings, Jack P Antel, Ali Mortazavi, Monica J Carson, Wayne W Poon, Mathew Blurton-Jones
Microglia play critical roles in brain development, homeostasis, and neurological disorders. Here, we report that human microglial-like cells (iMGLs) can be differentiated from iPSCs to study their function in neurological diseases, like Alzheimer's disease (AD). We find that iMGLs develop in vitro similarly to microglia in vivo, and whole-transcriptome analysis demonstrates that they are highly similar to cultured adult and fetal human microglia. Functional assessment of iMGLs reveals that they secrete cytokines in response to inflammatory stimuli, migrate and undergo calcium transients, and robustly phagocytose CNS substrates...
April 19, 2017: Neuron
https://www.readbyqxmd.com/read/28426698/extensive-alterations-of-blood-metabolites-in-pediatric-cerebral-malaria
#18
Sanchit Gupta, Karl Seydel, Miguel A Miranda-Roman, Catherine M Feintuch, Alex Saidi, Ryung S Kim, Gretchen L Birbeck, Terrie Taylor, Johanna P Daily
Cerebral malaria (CM) presents as an encephalopathy and is due to infection with Plasmodium falciparum. Patients are comatose, often with fever, recurrent seizures and this condition is associated with a high mortality rate. The etiology of the coma and seizures are poorly understood. Circulating small molecules and lipids have bioactive functions and alterations in their concentrations have been implicated in seizure disorders and other forms of encephalopathy. We carried out a comprehensive analysis of blood metabolites during CM to explore a biochemical basis of this encephalopathy...
2017: PloS One
https://www.readbyqxmd.com/read/28425521/chemical-genomic-analysis-of-gpr35-signaling
#19
Heidi Haibei Hu, Huayun Deng, Shizhang Ling, Haiyan Sun, Terry Kenakin, Xinmiao Liang, Ye Fang
GPR35, a family A orphan G protein-coupled receptor, has been implicated in inflammatory, neurological, and cardiovascular diseases. However, not much is known about the signaling and functions of GPR35. We performed a label-free kinome short hairpin RNA screen and identified a putative signaling network of GPR35 in HT-29 cells, some of which was validated using gene expression, biochemical and cellular assays. The results showed that GPR35 induced hypoxia-inducible factor 1α, and was involved in synaptic transmission, sensory perception, the immune system, and morphogenetic processes...
April 20, 2017: Integrative Biology: Quantitative Biosciences From Nano to Macro
https://www.readbyqxmd.com/read/28424653/disentangling-stigma-from-functional-neurological-disorders-conference-report-and-roadmap-for-the-future
#20
Karen S Rommelfanger, Stewart A Factor, Suzette LaRoche, Phyllis Rosen, Raymond Young, Mark H Rapaport
A multidisciplinary expert review of key issues and future directions from the conference "Controversial labels and clinical uncertainties: psychogenic disorders, conversion disorder, and functional symptoms." On October 9 and 10, 2015, a conference entitled "Controversial labels and clinical uncertainties: psychogenic disorders, conversion disorder, and functional symptoms" was held at the Center for Ethics, Emory University, Atlanta, GA, USA. This conference brought together a select group of 30 distinguished thought leaders and practitioners, including ethicists, researchers, clinicians, humanities scholars, and advocates to discuss the unique challenges and controversies related to the diagnosis, treatment, and stigma for patients with what is currently recognized as functional ("psychogenic") neurological disorders...
2017: Frontiers in Neurology
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