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neurodevelopmental disabilities

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https://www.readbyqxmd.com/read/28544954/long-term-attention-deficits-combined-with-subcortical-and-cortical-structural-central-nervous-system-alterations-in-young-adults-born-small-for-gestational-age
#1
Sabrina Suffren, Diego Angulo, Yang Ding, Pablo Reyes, Jorge Marin, Jose T Hernandez, Nathalie Charpak, Gregory A Lodygensky
BACKGROUND: Being born small for gestational age has been associated with neurodevelopmental disabilities and smaller gray matter volumes in childhood. However, it is not known if these changes persist in adults and whether SGA has any impact on attention memory and IQ. AIMS: The goal of this study was to evaluate the association between birth weight and gray matter anatomy in adults born small for gestational age at term, in relation to IQ, attention and memory...
May 22, 2017: Early Human Development
https://www.readbyqxmd.com/read/28544326/haploinsufficiency-of-nr4a2-is-associated-with-a-neurodevelopmental-phenotype-with-prominent-language-impairment
#2
Miriam S Reuter, Mandy Krumbiegel, Gregor Schlüter, Arif B Ekici, André Reis, Christiane Zweier
Non-recurrent deletions in 2q24.1, minimally overlapping two genes, NR4A2 and GPD2, were recently described in individuals with language impairment and behavioral and cognitive symptoms. We herewith report on a female patient with a similar phenotype of severe language and mild cognitive impairment, in whom we identified a de novo deletion covering only NR4A2. NR4A2 encodes a transcription factor highly expressed in brain regions critical for speech and language and implicated in dopaminergic neuronal development...
May 24, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28527573/retinoid-related-orphan-receptor-%C3%AE-and-transcriptional-control-of-neuronal-differentiation
#3
Hong Liu, Michihiko Aramaki, Yulong Fu, Douglas Forrest
The ability to generate neuronal diversity is central to the function of the nervous system. Here we discuss the key neurodevelopmental roles of retinoid-related orphan receptor β (RORβ) encoded by the Rorb (Nr1f2) gene. Recent studies have reported loss of function of the human RORB gene in cases of familial epilepsy and intellectual disability. Principal sites of expression of the Rorb gene in model species include sensory organs, the spinal cord, and brain regions that process sensory and circadian information...
2017: Current Topics in Developmental Biology
https://www.readbyqxmd.com/read/28526761/a-retrospective-chart-review-of-the-features-of-pten-hamartoma-tumour-syndrome-in-children
#4
Emily Hansen-Kiss, Sarah Beinkampen, Brent Adler, Thomas Frazier, Thomas Prior, Steven Erdman, Charis Eng, Gail Herman
OBJECTIVE: It is recognised that 5% - 10 % of children with macrocephaly and autism spectrum disorder (ASD) and/or intellectual disability (ID) have a heterozygous pathogenic mutation in the PTEN tumour suppressor gene that is associated with PTEN hamartoma tumour syndrome. However, the clinical features and course in children with a pathogenic PTEN mutation are unclear and have not been well documented. STUDY OBJECTIVES: We undertook a retrospective chart review of children (< 18  years) with pathogenic PTEN mutations to ascertain clinical findings, clinical course and possible outcomes...
May 19, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/28521525/babbling-in-children-with-neurodevelopmental-disability-and-validity-of-a-simplified-way-of-measuring-canonical-babbling-ratio
#5
Anna Nyman, Anette Lohmander
Babbling is an important precursor to speech, but has not yet been thoroughly investigated in children with neurodevelopmental disabilities. Canonical babbling ratio (CBR) is a commonly used but time-consuming measure for quantifying babbling. The aim of this study was twofold: to validate a simplified version of the CBR (CBR(UTTER)), and to use this measure to determine if early precursors to speech and language development could be detected in children with different neurodevelopmental disabilities. Two different data sets were used...
May 19, 2017: Clinical Linguistics & Phonetics
https://www.readbyqxmd.com/read/28518104/neurodevelopmental-reflex-testing-in-neonatal-rat-pups
#6
Antoinette T Nguyen, Edward A Armstrong, Jerome Y Yager
Neurodevelopmental reflex testing is commonly used in clinical practice to assess the maturation of the nervous system. Neurodevelopmental reflexes are also referred to as primitive reflexes. They are sensitive and consistent with later outcomes. Abnormal reflexes are described as an absence, persistence, reappearance, or latency of reflexes, which are predictive indices of infants that are at high risk for neurodevelopmental disorders. Animal models of neurodevelopmental disabilities, such as cerebral palsy, often display aberrant developmental reflexes, as would be observed in human infants...
April 24, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28507511/distribution-of-elovl4-in-the-developing-and-adult-mouse-brain
#7
David M Sherry, Blake R Hopiavuori, Megan A Stiles, Negar S Rahman, Kathryn G Ozan, Ferenc Deak, Martin-Paul Agbaga, Robert E Anderson
ELOngation of Very Long chain fatty acids (ELOVL)-4 is essential for the synthesis of very long chain-fatty acids (fatty acids with chain lengths ≥ 28 carbons). The functions of ELOVL4 and its very long-chain fatty acid products are poorly understood at present. However, mutations in ELOVL4 cause neurodevelopmental or neurodegenerative diseases that vary according to the mutation and inheritance pattern. Heterozygous inheritance of different ELOVL4 mutations causes Stargardt-like Macular Dystrophy or Spinocerebellar Ataxia type 34...
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/28506748/copy-number-variation-analysis-of-patients-with-intellectual-disability-from-north-west-spain
#8
Inés Quintela, Jesús Eirís, Carmen Gómez-Lado, Laura Pérez-Gay, David Dacruz, Raquel Cruz, Manuel Castro-Gago, Luz Míguez, Ángel Carracedo, Francisco Barros
Intellectual disability (ID) is a complex and phenotypically heterogeneous neurodevelopmental disorder characterized by significant deficits in cognitive and adaptive skills, debuting during the developmental period. In the last decade, microarray-based copy number variation (CNV) analysis has been proved as a strategy particularly useful in the discovery of loci and candidate genes associated with these phenotypes and is widely used in the clinics with a diagnostic purpose. In this study, we evaluated the usefulness of two genome-wide high density SNP microarrays -Cytogenetics Whole-Genome 2...
May 12, 2017: Gene
https://www.readbyqxmd.com/read/28503735/wdr45b-related-intellectual-disability-spastic-quadriplegia-epilepsy-and-cerebral-hypoplasia-a-consistent-neurodevelopmental-syndrome
#9
Jehan Suleiman, Diane Allingham-Hawkins, Mais Hashem, Hanan Shamseddin, Fowzan S Alkuraya, Ayman W El-Hattab
The advancement in genomic sequencing has greatly improved the diagnostic yield for neurodevelopmental disorders and led to the discovery of large number of novel genes associated with these disorders. WDR45B has been identified as a potential intellectual disability gene through genomic sequencing of two large cohorts of affected individuals. In this report we present six individuals from three unrelated families with homozygous pathogenic variants in WDR45B: c.799C>T (p.Q267*) in one family and c.673C>T (p...
May 14, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/28503387/rubinstein-taybi-syndrome-associated-with-pituitary-macroadenoma-a-case-report
#10
Yasamin Olyaei, J Manuel Sarmiento, Serguei I Bannykh, Doniel Drazin, Robert T Naruse, Wesley King
Rubinstein-Taybi Syndrome (RSTS) is an autosomal dominant disorder that is classically characterized by prenatal and postnatal growth restriction, microcephaly, dysmorphic craniofacial features, broad thumbs and toes, and intellectual disability. We describe the first reported case of a pituitary macroadenoma associated with RSTS. A 39-year-old Caucasian female with a past medical history of RSTS diagnosed at age two was found to have a gadolinium-enhancing pituitary mass on magnetic resonance imaging (MRI) of the brain three years ago during workup for migraine-like headaches...
April 11, 2017: Curēus
https://www.readbyqxmd.com/read/28500650/aberrant-cognitive-phenotypes-and-altered-hippocampal-bdnf-expression-related-to-epigenetic-modifications-in-mice-lacking-the-post-synaptic-scaffolding-protein-shank1-implications-for-autism-spectrum-disorder
#11
A Özge Sungur, Magdalena C E Jochner, Hani Harb, Ayşe Kılıç, Holger Garn, Rainer K W Schwarting, Markus Wöhr
Autism spectrum disorder (ASD) is a class of neurodevelopmental disorders characterized by persistent deficits in social communication/interaction, together with restricted/repetitive patterns of behavior. ASD is among the most heritable neuropsychiatric conditions, and while available evidence points to a complex set of genetic factors, the SHANK gene family has emerged as one of the most promising candidates. Here, we assessed ASD-related phenotypes with particular emphasis on social behavior and cognition in Shank1 mouse mutants in comparison to heterozygous and wildtype littermate controls across development in both sexes...
May 12, 2017: Hippocampus
https://www.readbyqxmd.com/read/28498556/adaptive-and-maladaptive-functioning-in-kleefstra-syndrome-compared-to-other-rare-genetic-disorders-with-intellectual-disabilities
#12
Karlijn Vermeulen, Anneke de Boer, Joost G E Janzing, David A Koolen, Charlotte W Ockeloen, Marjolein H Willemsen, Floor M Verhoef, Patricia A M van Deurzen, Linde van Dongen, Hans van Bokhoven, Jos I M Egger, Wouter G Staal, Tjitske Kleefstra
Detailed neurobehavioural profiles are of major value for specific clinical management, but have remained underexposed in the population with intellectual disabilities (ID). This was traditionally classified based on IQ level only. Rapid advances in genetics enable etiology based stratification in the majority of patients, which reduces clinical heterogeneity. This paper illustrates that specific profiles can be obtained for rare syndromes with ID. Our main aim was to study (mal)adaptive functioning in Kleefstra Syndrome (KS) by comparing and contrasting our findings to three other subgroups: Koolen-de Vries Syndrome, GATAD2B-related syndrome, and a mixed control group of individuals with ID...
May 12, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28493104/hypomyelinating-leukodystrophy-associated-with-a-deleterious-mutation-in-the-atrn-gene
#13
Maher Awni Shahrour, Motee Ashhab, Simon Edvardson, Michal Gur, Bassam Abu-Libdeh, Orly Elpeleg
Hypomyelinating leukodystrophies are a group of neurodevelopmental disorders that affect proper formation of the myelin sheath in the central nervous system. They are characterized by developmental delay, hypotonia, spasticity, and variable intellectual disability. We used whole exome analysis to study the molecular basis of hypomyelinating leukodystrophy in two sibs from a consanguineous family. A homozygous mutation, c.3068+5G>A, was identified in the ATRN gene, with the consequent insertion of an intronic sequence into the patients' cDNA and a predicted premature termination of the ATRN polypeptide...
May 10, 2017: Neurogenetics
https://www.readbyqxmd.com/read/28492217/prevalence-of-intellectual-disabilities-and-epilepsy-in-different-forms-of-spastic-cerebral-palsy-in-adults
#14
Mladenka Vukojević, Tomislav Cvitković, Bruno Splavski, Zdenko Ostojić, Darinka Šumanović-Glamuzina, Josip Šimić
BACKGROUND: Spastic cerebral palsy may be interconnected with other neurodevelopmental disorders such as intellectual disabilities, and epilepsy. Brain synaptic plasticity and successful restorative rehabilitation may also contribute to diminish neurological deficit of patients having cerebral palsy. The aim of this study was to investigate the prevalence of intellectual disabilities and epilepsy in adult patients with different forms of spastic cerebral palsy and to find out correlation between the severity level of intellectual disabilities and epilepsy...
May 2017: Psychiatria Danubina
https://www.readbyqxmd.com/read/28489145/mismatch-between-diagnostic-reports-and-special-educational-needs-classification-in-a-public-educational-system
#15
Maria Cristina Triguero Veloz Teixeira, Décio Brunoni, Luiz Renato Rodrigues Carreiro, Ana Claudia Braga, Naiara Adorna da Silva, Cristiane Silvestre Paula
Objective: To assess the diagnostic status, the sociodemographic and health profiles for students with special educational needs (SEN) in a public educational system, and to map their use of educational/social services. Methods: The sample comprised 1,202 SEN students from a total of 59,344 students. Results: Only 792 students of the 1,202 had an established diagnosis. The most prevalent SEN condition was intellectual disability. There was a low percentage (29...
April 2017: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/28487885/novel-de-novo-variant-in-ebf3-is-likely-to-impact-dna-binding-in-a-patient-with-a-neurodevelopmental-disorder-and-expanded-phenotypes-patient-report-in-silico-functional-assessment-and-review-of-published-cases
#16
Patrick R Blackburn, Sarah S Barnett, Michael T Zimmermann, Margot A Cousin, Charu Kaiwar, Filippo Pinto E Vairo, Zhiyv Niu, Matthew J Ferber, Raul A Urrutia, Duygu Selcen, Eric W Klee, Pavel N Pichurin
Pathogenic variants in EBF3 were recently described in three back-to-back publications in association with a novel neurodevelopmental disorder characterized by intellectual disability, speech delay, ataxia, and facial dysmorphisms. In this report, we describe an additional patient carrying a de novo missense variant in EBF3 (c.487C>T, p.(Arg163Trp)) that falls within a conserved residue in the zinc knuckle motif of the DNA binding domain. Without a solved structure of the DNA binding domain, we generated a homology-based atomic model and performed molecular dynamics simulations for EBF3, which predicted decreased DNA affinity for p...
May 2017: Cold Spring Harbor Molecular Case Studies
https://www.readbyqxmd.com/read/28482742/neurodevelopmental-outcomes-in-22-children-with-microcephaly-of-different-etiologies
#17
Eliza Gordon-Lipkin, Maura Blakemore Gentner, Rebecca German, Mary L Leppert
We examined longitudinal neurodevelopmental outcomes in a series of infants with microcephaly. Retrospective review identified neonatal intensive care unit follow-up clinic patients with a diagnostic code of microcephaly, verified by head circumference less than the fifth precentile (WHO growth curves). Data were collected regarding clinical history and developmental assessments by Capute Scales and gross motor age equivalent. Developmental Quotient (DQ) was age adjusted up until 2 years for preterm infants...
January 1, 2017: Journal of Child Neurology
https://www.readbyqxmd.com/read/28480548/expanding-the-phenotypic-spectrum-of-truncating-pogz-mutations-association-with-cns-malformations-skeletal-abnormalities-and-distinctive-facial-dysmorphism
#18
Maria Lisa Dentici, Marcello Niceta, Francesca Pantaleoni, Sabina Barresi, Paola Bencivenga, Bruno Dallapiccola, Maria Cristina Digilio, Marco Tartaglia
Exome sequencing has led to the comprehension of the molecular bases of several forms of neurodevelopmental disorders, a clinically heterogeneous group of diseases characterized by intellectual disability (ID) and autism spectrum disorder (ASD). De novo mutations in POGZ has been causally linked to isolated ASD and syndromic ID, only recently. Here we report on a 15 year-old girl in whom exome sequencing allowed to identify a de novo POGZ truncating mutation as the molecular cause underlying a complex phenotype apparently not fitting any recognized syndrome...
May 7, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28476522/preliminary-study-of-neurodevelopmental-outcomes-and-parenting-stress-in-pediatric-mitochondrial-disease
#19
Soyong Eom, Young-Mock Lee
BACKGROUND: Little is known regarding the neuropsychological profiles of pediatric patients with mitochondrial diseases or their parents, information that is crucial for improving the quality of life (QOL) for both patients and parents. We aimed to delineate neurodevelopment and psychological comorbidity in children with mitochondrial diseases in the preliminary investigation of adequate intervention methods, better prognoses, and improved QOL for both patients and parents. METHODS: Seventy children diagnosed with mitochondrial diseases were neuropsychologically evaluated...
February 2, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28470180/associations-of-the-intellectual-disability-gene-myt1l-with-helix-loop-helix-gene-expression-hippocampus-volume-and-hippocampus-activation-during-memory-retrieval
#20
Agnes Kepa, Lourdes Martinez Medina, Susanne Erk, Deepak P Srivastava, Alinda Fernandes, Roberto Toro, Sabine Lévi, Barbara Ruggeri, Cathy Fernandes, Franziska Degenhardt, Stephanie H Witt, Andreas Meyer-Lindenberg, Jean-Christophe Poncer, Jean-Luc Martinot, Marie-Laure Paillère Martinot, Christian P Müller, Andreas Heinz, Henrik Walter, Gunter Schumann, Sylvane Desrivières
The fundamental role of the brain-specific myelin transcription factor 1-like (MYT1L) gene in cases of intellectual disability and in the aetiology of neurodevelopmental disorders is increasingly recognised. Yet, its function remains under-investigated. Here, we identify a network of helix-loop-helix (HLH) transcriptional regulators controlled by MYT1L, as indicated by our analyses in human neural stem cells and in the human brain. Using cell-based knockdown approaches and microarray analyses we found that (i) MYT1L is required for neuronal differentiation and identified ID1, a HLH inhibitor of premature neurogenesis, as a target...
May 4, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
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