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intellectual disability and epilepsy

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https://www.readbyqxmd.com/read/28211645/disability-and-inclusive-education-in-an-italian-region-analysis-of-the-data-for-the-school-year-2012-2013
#1
Evamaria Lanzarini, Antonia Parmeggiani
BACKGROUND: In Italy, pupils with disabilities enroll in mainstream schools and attend the ordinary classes at all educational levels. For the past twelve years, the Region Emilia Romagna has witnessed an increase in the number of children who are in need of special support. The aim of the study was to identify the causes of disability in children attending public schools during the school year 2012-2013. METHODS: The study was designed as a cross-sectional survey...
February 17, 2017: Minerva Pediatrica
https://www.readbyqxmd.com/read/28207852/tetraspanin-6-a-novel-regulator-of-hippocampal-synaptic-transmission-and-long-term-plasticity
#2
Isabel H Salas, Zsuzsanna Callaerts-Vegh, Amaia M Arranz, Francesc X Guix, Rudi D'Hooge, José A Esteban, Bart De Strooper, Carlos G Dotti
Tetraspanins (Tspan) are transmembrane proteins with important scaffold and signalling functions. Deletions of Tetraspanin 6 (Tspan6) gene, a member of the tetraspanin family, have been reported in patients with Epilepsy Female-restricted with Mental Retardation (EFMR). Interestingly, mutations in Tspan7, highly homologous to Tspan6, are associated with X-linked intellectual disability, suggesting that these two proteins are important for cognition. Considering recent evidences showing that Tspan7 plays a key role in synapse development and AMPAR trafficking, we initiated the study of Tspan6 in synaptic function using a Tspan6 knock out mouse model...
2017: PloS One
https://www.readbyqxmd.com/read/28199897/real-world-utility-of-whole-exome-sequencing-with-targeted-gene-analysis-for-focal-epilepsy
#3
Piero Perucca, Ingrid E Scheffer, A Simon Harvey, Paul A James, Sebastian Lunke, Natalie Thorne, Clara Gaff, Brigid M Regan, John A Damiano, Michael S Hildebrand, Samuel F Berkovic, Terence J O'Brien, Patrick Kwan
OBJECTIVE: Driven by advances in genomic technology and reduction in costs, next-generation sequencing (NGS) is venturing into routine clinical care. The 'real-world' clinical utility of NGS remains to be determined in focal epilepsies, which account for 60% of all epilepsies and for which the importance of genetic factors is just beginning to emerge. We investigated the diagnostic yield and management implications of whole exome sequencing (WES)-based screening of selected genes in the routine care of common focal epilepsies suspected to have a genetic basis...
February 7, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28188025/vagus-nerve-stimulation-in-children-a-focus-on-intellectual-disability
#4
REVIEW
Jo Sourbron, Sylvia Klinkenberg, Alfons Kessels, Helenius Jurgen Schelhaas, Lieven Lagae, Marian Majoie
INTRODUCTION: Vagus Nerve Stimulation (VNS) can be an efficacious add-on treatment in patients with drug-resistant epilepsy, who are not eligible for surgery. Evidence of VNS efficacy in children with intellectual disability (ID) is scarce. OBJECTIVES: The purpose of this study was to review all available VNS data in the pediatric population (≤18 years old) and focus on the subpopulation with ID since appropriate treatment of these children is often challenging and complex...
January 30, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28183735/new-insights-into-the-regulatory-function-of-cyfip1-in-the-context-of-wave-and-fmrp-containing-complexes
#5
Sabiha Abekhoukh, H Bahar Sahin, Mauro Grossi, Samantha Zongaro, Thomas Maurin, Irene Madrigal, Daniele Kazue-Sugioka, Annick Raas-Rothschild, Mohamed Doulazmi, Pilar Carrera, Andrea Stachon, Steven Scherer, Maria Rita Drula Do Nascimento, Alain Trembleau, Ignacio Arroyo, Szatmari Peter, Isabel M Smith, Montserrat Milà, Adam C Smith, Angela Giangrande, Isabelle Caillé, Barbara Bardoni
CYtoplasmic FMRP Interacting Protein 1 (CYFIP1) is a candidate gene for intellectual disability (ID), autism, schizophrenia and epilepsy. It is a member of a family of proteins that is very conserved during evolution, sharing high homology with dCYFIP, its Drosophila homolog. CYFIP1 interacts with the Fragile X Mental Retardation Protein (FMRP), whose absence causes the Fragile X Syndrome, and with the translation initiation factor eIF4E. It is a member of the WAVE Regulatory Complex (WRC), thus representing a link between translational regulation and actin cytoskeleton...
February 9, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28183037/long-term-lacosamide-retention-real-world-experience-at-a-tertiary-epilepsy-center-in-ireland
#6
Ronan N McGinty, Daniel J Costello
PURPOSE: To estimate the rate of long-term lacosamide retention among a real-world group of patients at a tertiary epilepsy center in Ireland. METHODS: One-hundred adults first prescribed lacosamide for epilepsy between January 2010 and August 2014 at Cork University Hospital were randomly selected for a retrospective analysis of medical records covering two years of subsequent epilepsy clinic follow-up to ascertain whether lacosamide was continued or withdrawn...
February 6, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28182669/a-de-novo-loss-of-function-grin2a-mutation-associated-with-childhood-focal-epilepsy-and-acquired-epileptic-aphasia
#7
Kai Gao, Anel Tankovic, Yujia Zhang, Hirofumi Kusumoto, Jin Zhang, Wenjuan Chen, Wenshu XiangWei, Gil H Shaulsky, Chun Hu, Stephen F Traynelis, Hongjie Yuan, Yuwu Jiang
OBJECTIVE: N-methyl-D-aspartate receptors (NMDAR) subunit GRIN2A/GluN2A mutations have been identified in patients with various neurological diseases, such as epilepsy and intellectual disability / developmental delay (ID/DD). In this study, we investigated the phenotype and underlying molecular mechanism of a GRIN2A missense mutation identified by next generation sequencing on idiopathic focal epilepsy using in vitro electrophysiology. METHODS: Genomic DNA of patients with epilepsy and ID/DD were sequenced by targeted next-generation sequencing within 300 genes related to epilepsy and ID/DD...
2017: PloS One
https://www.readbyqxmd.com/read/28173649/-a-novel-mutation-in-kcnb1-gene-in-a-child-with-neuropsychiatric-comorbidities-with-both-intellectual-disability-and-epilepsy-and-review-of-literature
#8
P Miao, J Peng, C Chen, N Gai, F Yin
Objective: To explore the association between the phenotype and KCNB1 gene mutation. Method: Clinical information including physical features, laboratory and genetic data of one patient of mental retardation with refractory epilepsy from Department of Pediatrics, Xiangya Hospital in January 2016 was analyzed. This patient was discovered to have KCNB1 gene mutations through whole exome sequencing. Relevant information about KCNB1 gene mutation was searched and collected from Pubmed, CNKI, Human Gene Mutation Database(HGMD) and Online Mendelian Inheritance in Man(OMIM)...
February 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28160395/a-novel-disorder-of-sex-development-characterized-by-progressive-regression-of-testicular-function-and-cystic-leukoencephalopathy
#9
Massimiliano Rossi, Alexandre Vasiljevic, Audrey Labalme, Frédérique Dijoud, Delphine Mallet-Motak, Carmen Adina Petcu, Renaud Touraine, Christine Vianey-Saban, Laurent Guibaud, Patrick Edery, Damien Sanlaville, Yves Morel
We report a novel syndromic disorder of sex development observed in three male siblings, presenting with the association of micropenis without hypospadias, cryptorchidism, very low level of antimüllerian hormone in the neonatal period, and no persistent müllerian duct structures, suggesting a progressive regression of testicular function. The patients described here showed a striking neurological involvement including bilateral periventricular cysts observed in the anterior part of the frontal horns prenatally and increasing in size and number over time, associated with infra and supratentorial parenchymal atrophy, dilated ventricular system, corpus callosum hypoplasia, severe intellectual disability, and epilepsy...
February 4, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28150739/alterations-in-the-carnitine-cycle-in-a-mouse-model-of-rett-syndrome
#10
Sabrina Mucerino, Anna Di Salle, Nicola Alessio, Sabrina Margarucci, Raffaella Nicolai, Mariarosa A B Melone, Umberto Galderisi, Gianfranco Peluso
Rett syndrome (RTT) is a neurodevelopmental disease that leads to intellectual deficit, motor disability, epilepsy and increased risk of sudden death. Although in up to 95% of cases this disease is caused by de novo loss-of-function mutations in the X-linked methyl-CpG binding protein 2 gene, it is a multisystem disease associated also with mitochondrial metabolic imbalance. In addition, the presence of long QT intervals (LQT) on the patients' electrocardiograms has been associated with the development of ventricular tachyarrhythmias and sudden death...
February 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28145425/loss-of-function-of-kcnc1-is-associated-with-intellectual-disability-without-seizures
#11
Karine Poirier, Géraldine Viot, Laura Lombardi, Clémence Jauny, Pierre Billuart, Thierry Bienvenu
p.(Arg320His) mutation in the KCNC1 gene in human 11p15.1 has recently been identified in patients with progressive myoclonus epilepsies, a group of rare inherited disorders manifesting with action myoclonus, myoclonic epilepsy, and ataxia. This KCNC1 variant causes a dominant-negative effect. Here we describe three patients from the same family with intellectual disability and dysmorphic features. The three affected individuals carry a c.1015C>T (p.(Arg339*)) nonsense variant in KCNC1 gene. As previously observed in the mutant mouse carrying a disrupted KCNC1 gene, these findings reveal that individuals with a KCNC1 loss-of-function variant can present intellectual disability without seizure and epilepsy...
February 1, 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28132692/a-recurrent-de-novo-variant-in-nacc1-causes-a-syndrome-characterized-by-infantile-epilepsy-cataracts-and-profound-developmental-delay
#12
Kelly Schoch, Linyan Meng, Szabolcs Szelinger, David R Bearden, Asbjorg Stray-Pedersen, Oyvind L Busk, Nicholas Stong, Eriskay Liston, Ronald D Cohn, Fernando Scaglia, Jill A Rosenfeld, Jennifer Tarpinian, Cara M Skraban, Matthew A Deardorff, Jeremy N Friedman, Zeynep Coban Akdemir, Nicole Walley, Mohamad A Mikati, Peter G Kranz, Joan Jasien, Allyn McConkie-Rosell, Marie McDonald, Stephanie Burns Wechsler, Michael Freemark, Sujay Kansagra, Sharon Freedman, Deeksha Bali, Francisca Millan, Sherri Bale, Stanley F Nelson, Hane Lee, Naghmeh Dorrani, David B Goldstein, Rui Xiao, Yaping Yang, Jennifer E Posey, Julian A Martinez-Agosto, James R Lupski, Michael F Wangler, Vandana Shashi
Whole-exome sequencing (WES) has increasingly enabled new pathogenic gene variant identification for undiagnosed neurodevelopmental disorders and provided insights into both gene function and disease biology. Here, we describe seven children with a neurodevelopmental disorder characterized by microcephaly, profound developmental delays and/or intellectual disability, cataracts, severe epilepsy including infantile spasms, irritability, failure to thrive, and stereotypic hand movements. Brain imaging in these individuals reveals delay in myelination and cerebral atrophy...
February 2, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28131202/clinical-and-genetic-studies-in-patients-with-lafora-disease-from-pakistan
#13
Arsalan Ahmad, Rubina Dad, Muhammad Ikram Ullah, Tahir Ahmed Baig, Imran N Ahmad, Abdul Nasir, Christian A Hübner, Muhammad Jawad Hassan
Lafora disease (LD) is progressive myoclonic epilepsy with late childhood- to teenage-onset. Mutations in two genes, EPM2A and NHLRC1, are responsible for this autosomal recessive disease in many patients Worldwide. In present study, we reported two unrelated consanguineous Pakistani families with Lafora disease (Families A and B). Affected individuals in both families presented with generalized tonic clonic seizures, intellectual disability, ataxia and cognitive decline. Diagnosis of Lafora disease was made on histo-pathological analysis of the skin biopsy, found positive for lafora bodies in periodic acid schiff stain and frequent generalized epileptiform discharges on electroencephalogram (EEG)...
February 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28119487/stag1-mutations-cause-a-novel-cohesinopathy-characterised-by-unspecific-syndromic-intellectual-disability
#14
Daphné Lehalle, Anne-Laure Mosca-Boidron, Amber Begtrup, Odile Boute-Benejean, Perrine Charles, Megan T Cho, Amanda Clarkson, Orrin Devinsky, Yannis Duffourd, Laurence Duplomb-Jego, Bénédicte Gérard, Aurélia Jacquette, Paul Kuentz, Alice Masurel-Paulet, Carey McDougall, Sébastien Moutton, Hilde Olivié, Soo-Mi Park, Anita Rauch, Nicole Revencu, Jean-Baptiste Rivière, Karol Rubin, Ingrid Simonic, Deborah J Shears, Thomas Smol, Ana Lisa Taylor Tavares, Paulien Terhal, Julien Thevenon, Koen Van Gassen, Catherine Vincent-Delorme, Marjolein H Willemsen, Golder N Wilson, Elaine Zackai, Christiane Zweier, Patrick Callier, Christel Thauvin-Robinet, Laurence Faivre
BACKGROUND: Cohesinopathies are rare neurodevelopmental disorders arising from a dysfunction in the cohesin pathway, which enables chromosome segregation and regulates gene transcription. So far, eight genes from this pathway have been reported in human disease. STAG1 belongs to the STAG subunit of the core cohesin complex, along with five other subunits. This work aimed to identify the phenotype ascribed to STAG1 mutations. METHODS: Among patients referred for intellectual disability (ID) in genetics departments worldwide, array-comparative genomic hybridisation (CGH), gene panel, whole-exome sequencing or whole-genome sequencing were performed following the local diagnostic standards...
January 24, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/28113094/validity-of-the-modified-berg-balance-scale-in-adults-with-intellectual-and-visual-disabilities
#15
Annemarie Dijkhuizen, Wim P Krijnen, Cees P van der Schans, Aly Waninge
BACKGROUND: A modified version of the Berg Balance Scale (mBBS) was developed for individuals with intellectual and visual disabilities (IVD). However, the concurrent and predictive validity has not yet been determined. AIM: The purpose of the current study was to evaluate the concurrent and predictive validity of the mBBS for individuals with IVD. METHOD: Fifty-four individuals with IVD and Gross Motor Functioning Classification System (GMFCS) Levels I and II participated in this study...
January 20, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28104412/features-of-the-broader-autism-phenotype-in-people-with-epilepsy-support-shared-mechanisms-between-epilepsy-and-autism-spectrum-disorder
#16
REVIEW
Annie E Richard, Ingrid E Scheffer, Sarah J Wilson
Richard, A.E., I.E. Scheffer and S.J. Wilson. Features of the broader autism phenotype in people with epilepsy support shared mechanisms between epilepsy and autism spectrum disorder. NEUROSCI BIOBEHAV REV 21(1) XXX-XXX, 2016. To inform on mechanisms underlying the comorbidity of epilepsy and autism spectrum disorder (ASD), we conducted meta-analyses to test whether impaired facial emotion recognition (FER) and theory of mind (ToM), key phenotypic traits of ASD, are more common in people with epilepsy (PWE) than controls...
January 16, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28103279/aristaless-related-homeobox-arx-interacts-with-%C3%AE-catenin-bcl9-and-p300-to-regulate-canonical-wnt-signaling
#17
Il-Taeg Cho, Youngshin Lim, Jeffrey A Golden, Ginam Cho
Mutations in the Aristaless Related Homeobox (ARX) gene are associated with a spectrum of structural (lissencephaly) and functional (epilepsy and intellectual disabilities) neurodevelopmental disorders. How mutations in this single transcription factor can result in such a broad range of phenotypes remains poorly understood. We hypothesized that ARX functions through distinct interactions with specific transcription factors/cofactors to regulate unique target genes in different cell types. To identify ARX interacting proteins, we performed an unbiased proteomics screen and identified several components of the Wnt/β-catenin signaling pathway, including β-catenin (CTNNB1), B-cell CLL/lymphoma 9 (BCL9) and leucine rich repeat flightless interacting protein 2 (LRRFIP2), in cortical progenitor cells...
2017: PloS One
https://www.readbyqxmd.com/read/28089585/the-impact-of-intelligence-on-memory-and-executive-functions-of-children-with-temporal-lobe-epilepsy-methodological-concerns-with-clinical-relevance
#18
Patricia Rzezak, Catarina A Guimarães, Marilisa M Guerreiro, Kette D Valente
PURPOSE: Patients with TLE are prone to have lower IQ scores than healthy controls. Nevertheless, the impact of IQ differences is not usually considered in studies that compared the cognitive functioning of children with and without epilepsy. This study aimed to determine the effect of using IQ as a covariate on memory and attentional/executive functions of children with TLE. METHODS: Thirty-eight children and adolescents with TLE and 28 healthy controls paired as to age, gender, and sociodemographic factors were evaluated with a comprehensive neuropsychological battery for memory and executive functions...
December 29, 2016: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28079314/scn1a-gene-mutation-and-adaptive-functioning-in-18-vietnamese-children-with-dravet-syndrome
#19
Thi Thu Hang Do, Diem My Vu, Thi Thuy Kieu Huynh, Thi Khanh Van Le, Eun Hwa Sohn, Thieu Mai Thao Le, Huu Hao Ha, Chi Bao Bui
BACKGROUND AND PURPOSE: Dravet syndrome is a rare and severe type of epilepsy in infants. The heterogeneity in the overall intellectual disability that these patients suffer from has been attributed to differences in genetic background and epilepsy severity. METHODS: Eighteen Vietnamese children diagnosed with Dravet syndrome were included in this study. SCN1A variants were screened by direct sequencing and multiplex ligation-dependent probe amplification. Adaptive functioning was assessed in all patients using the Vietnamese version of the Vineland Adaptive Behavior Scales, and the results were analyzed relative to the SCN1A variants and epilepsy severity...
January 2017: Journal of Clinical Neurology
https://www.readbyqxmd.com/read/28077841/pars2-and-nars2-mutations-in-infantile-onset-neurodegenerative-disorder
#20
Takeshi Mizuguchi, Mitsuko Nakashima, Mitsuhiro Kato, Keitaro Yamada, Tohru Okanishi, Nina Ekhilevitch, Hanna Mandel, Ayelet Eran, Miyuki Toyono, Yukio Sawaishi, Hirotaka Motoi, Masaaki Shiina, Kazuhiro Ogata, Satoko Miyatake, Noriko Miyake, Hirotomo Saitsu, Naomichi Matsumoto
Here we present four unrelated families with six individuals that have infantile-onset developmental delay/regression and epilepsy. Whole-exome sequencing revealed compound heterozygous mutations, c.[283G>A];[607G>A] in a gene encoding prolyl-tRNA synthetase (PARS2) in one family. Two pairs of compound heterozygous mutations, c.[151C>T];[1184T>G] and c.[707T>G];[594+1G>A], and a homozygous mutation, c.[500A>G];[500A>G], in a gene encoding asparaginyl-tRNA synthetase (NARS2) were also identified in the other three families...
January 12, 2017: Journal of Human Genetics
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