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Journal of Neurodevelopmental Disorders

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https://www.readbyqxmd.com/read/28728548/social-brain-circuitry-and-social-cognition-in-infants-born-preterm
#1
REVIEW
Angela Fenoglio, Michael K Georgieff, Jed T Elison
Preterm birth is associated with an increased risk of adverse neurologic, psychiatric, and cognitive outcomes. The brain circuits involved in processing social information are critical to all of these domains, but little work has been done to examine whether and how these circuits may be especially sensitive to prematurity. This paper contains a brief summary of some of the cognitive, psychiatric, and social outcomes associated with prematurity, followed by a description of findings from the modest body of research into social-cognitive development in infants and children born preterm...
July 19, 2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28729888/social-brain-circuitry-and-social-cognition-in-infants-born-preterm
#2
REVIEW
Angela Fenoglio, Michael K Georgieff, Jed T Elison
Preterm birth is associated with an increased risk of adverse neurologic, psychiatric, and cognitive outcomes. The brain circuits involved in processing social information are critical to all of these domains, but little work has been done to examine whether and how these circuits may be especially sensitive to prematurity. This paper contains a brief summary of some of the cognitive, psychiatric, and social outcomes associated with prematurity, followed by a description of findings from the modest body of research into social-cognitive development in infants and children born preterm...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28725279/erratum-to-delta-rhythmicity-is-a-reliable-eeg-biomarker-in-angelman-syndrome-a-parallel-mouse-and-human-analysis
#3
Michael S Sidorov, Gina M Deck, Marjan Dolatshahi, Ronald L Thibert, Lynne M Bird, Catherine J Chu, Benjamin D Philpot
[This corrects the article DOI: 10.1186/s11689-017-9195-8.].
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28690687/the-role-of-nonverbal-working-memory-in-morphosyntactic-processing-by-children-with-specific-language-impairment-and-autism-spectrum-disorders
#4
Susan Ellis Weismer, Meghan M Davidson, Ishanti Gangopadhyay, Heidi Sindberg, Hettie Roebuck, Margarita Kaushanskaya
BACKGROUND: Both children with autism spectrum disorders (ASD) and children with specific language impairment (SLI) have been shown to have difficulties with grammatical processing. A comparison of these two populations with neurodevelopmental disorders was undertaken to examine similarities and differences in the mechanisms that may underlie grammatical processing. Research has shown that working memory (WM) is recruited during grammatical processing. The goal of this study was to examine morphosyntactic processing on a grammatical judgment task in children who varied in clinical diagnosis and language abilities and to assess the extent to which performance is predicted by nonverbal working memory (WM)...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28690686/vagus-nerve-stimulation-as-a-potential-adjuvant-to-behavioral-therapy-for-autism-and-other-neurodevelopmental-disorders
#5
REVIEW
Crystal T Engineer, Seth A Hays, Michael P Kilgard
BACKGROUND: Many children with autism and other neurodevelopmental disorders undergo expensive, time-consuming behavioral interventions that often yield only modest improvements. The development of adjunctive interventions that can increase the benefit of rehabilitation therapies is essential in order to improve the lives of individuals with neurodevelopmental disorders. MAIN TEXT: Vagus nerve stimulation (VNS) is an FDA approved therapy that is safe and effective in reducing seizure frequency and duration in individuals with epilepsy...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28649286/autism-spectrum-disorder-and-epileptic-encephalopathy-common-causes-many-questions
#6
REVIEW
Siddharth Srivastava, Mustafa Sahin
Epileptic encephalopathies represent a particularly severe form of epilepsy, associated with cognitive and behavioral deficits, including impaired social-communication and restricted, repetitive behaviors that are the hallmarks of autism spectrum disorder (ASD). With the advent of next-generation sequencing, the genetic landscape of epileptic encephalopathies is growing and demonstrates overlap with genes separately implicated in ASD. However, many questions remain about this connection, including whether epileptiform activity itself contributes to the development of ASD symptomatology...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28630655/neural-patterns-elicited-by-sentence-processing-uniquely-characterize-typical-development-sli-recovery-and-sli-persistence
#7
Eileen Haebig, Christine Weber, Laurence B Leonard, Patricia Deevy, J Bruce Tomblin
BACKGROUND: A substantial amount of work has examined language abilities in young children with specific language impairment (SLI); however, our understanding of the developmental trajectory of language impairment is limited. Along with studying the behavioral changes that occur across development, it is important to examine the neural indices of language processing for children with different language trajectories. The current study sought to examine behavioral and neural bases of language processing in adolescents showing three different trajectories: those with normal language development (NL), those exhibiting persistent SLI (SLI-Persistent), and those with a history of SLI who appear to have recovered (SLI-Recovered)...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28616098/translation-in-fragile-x-no-home-runs-in-the-first-at-bat
#8
EDITORIAL
Jeremy Veenstra-VanderWeele
No abstract text is available yet for this article.
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28616097/updated-report-on-tools-to-measure-outcomes-of-clinical-trials-in-fragile-x-syndrome
#9
REVIEW
Dejan B Budimirovic, Elizabeth Berry-Kravis, Craig A Erickson, Scott S Hall, David Hessl, Allan L Reiss, Margaret K King, Leonard Abbeduto, Walter E Kaufmann
OBJECTIVE: Fragile X syndrome (FXS) has been the neurodevelopmental disorder with the most active translation of preclinical breakthroughs into clinical trials. This process has led to a critical assessment of outcome measures, which resulted in a comprehensive review published in 2013. Nevertheless, the disappointing outcome of several recent phase III drug trials in FXS, and parallel efforts at evaluating behavioral endpoints for trials in autism spectrum disorder (ASD), has emphasized the need for re-assessing outcome measures and revising recommendations for FXS...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28616096/fragile-x-targeted-pharmacotherapy-lessons-learned-and-future-directions
#10
REVIEW
Craig A Erickson, Matthew H Davenport, Tori L Schaefer, Logan K Wink, Ernest V Pedapati, John A Sweeney, Sarah E Fitzpatrick, W Ted Brown, Dejan Budimirovic, Randi J Hagerman, David Hessl, Walter E Kaufmann, Elizabeth Berry-Kravis
Our understanding of fragile X syndrome (FXS) pathophysiology continues to improve and numerous potential drug targets have been identified. Yet, current prescribing practices are only symptom-based in order to manage difficult behaviors, as no drug to date is approved for the treatment of FXS. Drugs impacting a diversity of targets in the brain have been studied in recent FXS-specific clinical trials. While many drugs have focused on regulation of enhanced glutamatergic or deficient GABAergic neurotransmission, compounds studied have not been limited to these mechanisms...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28616095/acamprosate-in-a-mouse-model-of-fragile-x-syndrome-modulation-of-spontaneous-cortical-activity-erk1-2-activation-locomotor-behavior-and-anxiety
#11
Tori L Schaefer, Matthew H Davenport, Lindsay M Grainger, Chandler K Robinson, Anthony T Earnheart, Melinda S Stegman, Anna L Lang, Amy A Ashworth, Gemma Molinaro, Kimberly M Huber, Craig A Erickson
BACKGROUND: Fragile X Syndrome (FXS) occurs as a result of a silenced fragile X mental retardation 1 gene (FMR1) and subsequent loss of fragile X mental retardation protein (FMRP) expression. Loss of FMRP alters excitatory/inhibitory signaling balance, leading to increased neuronal hyperexcitability and altered behavior. Acamprosate (the calcium salt of N-acetylhomotaurinate), a drug FDA-approved for relapse prevention in the treatment of alcohol dependence in adults, is a novel agent with multiple mechanisms that may be beneficial for people with FXS...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28616094/arbaclofen-in-fragile-x-syndrome-results-of-phase-3-trials
#12
Elizabeth Berry-Kravis, Randi Hagerman, Jeannie Visootsak, Dejan Budimirovic, Walter E Kaufmann, Maryann Cherubini, Peter Zarevics, Karen Walton-Bowen, Paul Wang, Mark F Bear, Randall L Carpenter
BACKGROUND: Arbaclofen improved multiple abnormal phenotypes in animal models of fragile X syndrome (FXS) and showed promising results in a phase 2 clinical study. The objective of the study is to determine safety and efficacy of arbaclofen for social avoidance in FXS. METHODS: Two phase 3 placebo-controlled trials were conducted, a flexible dose trial in subjects age 12-50 (209FX301, adolescent/adult study) and a fixed dose trial in subjects age 5-11 (209FX302, child study)...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28592997/diagnoses-and-characteristics-of-autism-spectrum-disorders-in-children-with-prader-willi-syndrome
#13
Elisabeth M Dykens, Elizabeth Roof, Hailee Hunt-Hawkins, Nathan Dankner, Evon Batey Lee, Carolyn M Shivers, Christopher Daniell, Soo-Jeong Kim
BACKGROUND: A small percentage of people with autism spectrum disorders (ASD) have alterations in chromosome 15q11.2-q3, the critical region for Prader-Willi syndrome (PWS). Data are limited, however, on the rates and characteristics of ASD in PWS. Previous estimates of ASD in PWS (25 to 41%) are questionable as they are based solely on autism screeners given to parents. Inaccurate diagnoses of ASD in PWS can mislead intervention and future research. METHODS: One hundred forty-six children and youth with PWS aged 4 to 21 years (M = 11) were assessed with the Autism Diagnostic Observation Schedule-2 (ADOS-2)...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28559932/exploring-the-heterogeneity-of-neural-social-indices-for-genetically-distinct-etiologies-of-autism
#14
Caitlin M Hudac, Holly A F Stessman, Trent D DesChamps, Anna Kresse, Susan Faja, Emily Neuhaus, Sara Jane Webb, Evan E Eichler, Raphael A Bernier
BACKGROUND: Autism spectrum disorder (ASD) is a genetically and phenotypically heterogeneous disorder. Promising initiatives utilizing interdisciplinary characterization of ASD suggest phenotypic subtypes related to specific likely gene-disrupting mutations (LGDMs). However, the role of functionally associated LGDMs in the neural social phenotype is unknown. METHODS: In this study of 26 children with ASD (n = 13 with an LGDM) and 13 control children, we characterized patterns of mu attenuation and habituation as children watched videos containing social and nonsocial motions during electroencephalography acquisition...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28529667/motor-problems-in-children-with-neurofibromatosis-type-1
#15
André B Rietman, Rianne Oostenbrink, Sanne Bongers, Eddy Gaukema, Sandra van Abeelen, Jos G Hendriksen, Caspar W N Looman, Pieter F A de Nijs, Marie-Claire de Wit
BACKGROUND: Children with the neurogenetic disorder neurofibromatosis type 1 (NF1) often have problems with learning and behaviour. In both parent reports and neuropsychological assessment, motor problems are reported in approximately one third to one half of the children with NF1. Studies using broad motor performance test batteries with relatively large groups of children with NF1 are limited. The aim of this cross-sectional observational study was to describe the severity of motor problems in children with NF1 and to explore the predictive value of demographics, intelligence, and behavioural problems...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28503211/delta-rhythmicity-is-a-reliable-eeg-biomarker-in-angelman-syndrome-a-parallel-mouse-and-human-analysis
#16
Michael S Sidorov, Gina M Deck, Marjan Dolatshahi, Ronald L Thibert, Lynne M Bird, Catherine J Chu, Benjamin D Philpot
BACKGROUND: Clinicians have qualitatively described rhythmic delta activity as a prominent EEG abnormality in individuals with Angelman syndrome, but this phenotype has yet to be rigorously quantified in the clinical population or validated in a preclinical model. Here, we sought to quantitatively measure delta rhythmicity and evaluate its fidelity as a biomarker. METHODS: We quantified delta oscillations in mouse and human using parallel spectral analysis methods and measured regional, state-specific, and developmental changes in delta rhythms in a patient population...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28469730/reduced-vagal-tone-in-women-with-the-fmr1-premutation-is-associated-with-fmr1-mrna-but-not-depression-or-anxiety
#17
Jessica Klusek, Giuseppe LaFauci, Tatyana Adayev, W Ted Brown, Flora Tassone, Jane E Roberts
BACKGROUND: Autonomic dysfunction is implicated in a range of psychological conditions, including depression and anxiety. The fragile X mental retardation-1 (FMR1) premutation is a common genetic mutation that affects ~1:150 women and is associated with psychological vulnerability. This study examined cardiac indicators of autonomic function among women with the FMR1 premutation and control women as potential biomarkers for psychological risk that may be linked to FMR1. METHODS: Baseline inter-beat interval and respiratory sinus arrhythmia (a measure of parasympathetic vagal tone) were measured in 35 women with the FMR1 premutation and 28 controls...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28465761/autonomic-breathing-abnormalities-in-rett-syndrome-caregiver-perspectives-in-an-international-database-study
#18
Jessica Mackay, Jenny Downs, Kingsley Wong, Jane Heyworth, Amy Epstein, Helen Leonard
BACKGROUND: Rett syndrome is a severe neurodevelopmental disorder associated with mutations in the MECP2 gene. Irregular breathing patterns and abdominal bloating are prominent but poorly understood features. Our aims were to characterize the abnormal breathing patterns and abdominal bloating, investigate the distribution of these by age and mutation type and examine their impact and management from a caregiver perspective. METHODS: We invited previously recruited families from the International Rett Syndrome Study to complete a web-based questionnaire concerning their family member with Rett syndrome aged between 2 and 57 years...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28396700/atypical-sound-discrimination-in-children-with-asd-as-indicated-by-cortical-erps
#19
Aurélie Bidet-Caulet, Marianne Latinus, Sylvie Roux, Joëlle Malvy, Frédérique Bonnet-Brilhault, Nicole Bruneau
BACKGROUND: Individuals with autism spectrum disorder (ASD) show a relative indifference to the human voice. Accordingly, and contrarily to their typically developed peers, adults with autism do not show a preferential response to voices in the superior temporal sulcus; this lack of voice-specific response was previously linked to atypical processing of voices. In electroencephalography, a slow event-related potential (ERP) called the fronto-temporal positivity to voice (FTPV) is larger for vocal than for non-vocal sounds, resulting in a voice-sensitive response over right fronto-temporal sites...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28331554/altered-functional-resting-state-hypothalamic-connectivity-and-abnormal-pituitary-morphology-in-children-with-prader-willi-syndrome
#20
Akvile Lukoshe, Suzanne E van Dijk, Gerbrich E van den Bosch, Aad van der Lugt, Tonya White, Anita C Hokken-Koelega
BACKGROUND: Prader-Willi syndrome (PWS) is a complex neurodevelopmental disorder, characterized by endocrine problems and hyperphagia, indicating hypothalamic-pituitary dysfunction. However, few studies have explored the underlying neurobiology of the hypothalamus and its functional connectivity with other brain regions. Thus, the aim of this study was to examine the anatomical differences of the hypothalamus, mammillary bodies, and pituitary gland as well as resting state functional connectivity of the hypothalamus in children with PWS...
2017: Journal of Neurodevelopmental Disorders
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