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https://www.readbyqxmd.com/read/28641949/reduced-protein-expressions-of-cytomembrane-gabaar%C3%AE-3-at-different-postnatal-developmental-stages-of-rats-exposed-prenatally-to-valproic-acid
#1
Yixin Li, Yang Zhou, Li Peng, Yong Zhao
Decreased inhibition plays an extremely important role in pathogenesis of autism spectrum disorder (ASD). Therefore, we aimed to determine whether expression levels of the γ-aminobutyric acid type A receptor β3 subunit (GABAARβ3), K(+)-Cl(-) cotransporter 2 (KCC2), and Na(+)-K(+)-Cl(-) cotransporter 1 (NKCC1) related to inhibition transmission are changed in a sodium valproate-induced rat model of ASD. Decreased expression levels of membrane GABAARβ3 (m-GABAARβ3) and KCC2 as well as increased endocytosis of GABAARs were found in the model group...
June 19, 2017: Brain Research
https://www.readbyqxmd.com/read/28641490/preserved-imitation-in-contrast-to-limited-free-application-of-comfortable-hand-actions-in-intellectually-able-young-adults-with-an-autism-spectrum-disorder
#2
Caroline Beelen, Koen Cuypers, Lise van Schuerbeeck, Marijke Braeken, Veerle Ross, Ellen Jongen, Raf Meesen, Marleen Vanvuchelen
Imitation problems are commonly reported in children with an autism spectrum disorder. However, it has not yet been determined whether imitation problems persist into young adulthood. In this study, we investigated imitation skills of 20 intellectually able young adults with autism spectrum disorder relative to 19 age-matched neurotypical adults. For this purpose, we used a bar-transport task, which evokes the application of the end-state comfort principle. Specifically, we examined whether young adults with autism spectrum disorder imitated the means-end structure of a demonstrator's bar-transport action with and without application of the end-state comfort principle (imitation task)...
June 1, 2017: Autism: the International Journal of Research and Practice
https://www.readbyqxmd.com/read/28639417/auditory-processing-in-autism-spectrum-disorder-mismatch-negativity-deficits
#3
Chantal Vlaskamp, Bob Oranje, Gitte Falcher Madsen, Jens Richardt Møllegaard Jepsen, Sarah Durston, Cathriona Cantio, Birte Glenthøj, Niels Bilenberg
Children with autism spectrum disorders (ASD) often show changes in (automatic) auditory processing. Electrophysiology provides a method to study auditory processing, by investigating event-related potentials such as mismatch negativity (MMN) and P3a-amplitude. However, findings on MMN in autism are highly inconsistent, partly due to small sample sizes in the studies and differences in MMN paradigms. Therefore, in the current study, MMN and P3a amplitude were assessed in a relatively large sample of children with ASD, using a more extensive MMN paradigm and compared with that of typically developing children (TDC)...
June 22, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/28639377/validating-the-social-responsiveness-scale-for-adults-with-autism
#4
Wai Chan, Leann E Smith, Jinkuk Hong, Jan S Greenberg, Marsha R Mailick
The Social Responsiveness Scale [SRS; Constantino & Gruber, 2005] is a widely-used measure of autism symptoms, but its application for the study of adults with autism spectrum disorders has not been fully evaluated. Using a factor structure consistent with The Diagnostic and Statistical Manual of Mental Disorders (5th ed., DSM-V) criteria for autism spectrum disorder [Frazier et al., 2014], the primary purpose of the current study was to establish the validity of the SRS with a sample of adults with autism spectrum disorder (N = 237)...
June 22, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/28638591/replicable-in-vivo-physiological-and-behavioral-phenotypes-of-the-shank3b-null-mutant-mouse-model-of-autism
#5
Sameer C Dhamne, Jill L Silverman, Chloe E Super, Stephen H T Lammers, Mustafa Q Hameed, Meera E Modi, Nycole A Copping, Michael C Pride, Daniel G Smith, Alexander Rotenberg, Jacqueline N Crawley, Mustafa Sahin
BACKGROUND: Autism spectrum disorder (ASD) is a clinically and biologically heterogeneous condition characterized by social, repetitive, and sensory behavioral abnormalities. No treatments are approved for the core diagnostic symptoms of ASD. To enable the earliest stages of therapeutic discovery and development for ASD, robust and reproducible behavioral phenotypes and biological markers are essential to establish in preclinical animal models. The goal of this study was to identify electroencephalographic (EEG) and behavioral phenotypes that are replicable between independent cohorts in a mouse model of ASD...
2017: Molecular Autism
https://www.readbyqxmd.com/read/28635378/people-with-autism-spectrum-conditions-make-more-consistent-decisions
#6
George D Farmer, Simon Baron-Cohen, William J Skylark
People with autism spectrum conditions (ASC) show reduced sensitivity to contextual stimuli in many perceptual and cognitive tasks. We investigated whether this also applies to decision making by examining adult participants' choices between pairs of consumer products that were presented with a third, less desirable "decoy" option. Participants' preferences between the items in a given pair frequently switched when the third item in the set was changed, but this tendency was reduced among individuals with ASC, which indicated that their choices were more consistent and conventionally rational than those of control participants...
June 1, 2017: Psychological Science
https://www.readbyqxmd.com/read/28635121/exposure-to-sodium-valproate-during-pregnancy-facial-features-and-signs-of-autism
#7
Rachel Stadelmaier, Hanah Nasri, Curtis K Deutsch, Margaret Bauman, Anne Hunt, Christopher J Stodgell, Jane Adams, Lewis B Holmes
BACKGROUND: Valproic acid (VPA) is the most teratogenic anticonvulsant drug in clinical use today. Children exposed prenatally to VPA have previously been shown to have dysmorphic craniofacial features, identified subjectively but not by anthropometric methods. Exposure to VPA has also been associated with an increased frequency of autism spectrum disorder (ASD). An increased cephalic index (the ratio of the cranial lateral width to the cranial anterior-posterior length) has been observed in children with ASD...
June 21, 2017: Birth defects research
https://www.readbyqxmd.com/read/28635106/long-noncoding-rna-and-its-contribution-to-autism-spectrum-disorders
#8
REVIEW
Jie Tang, Yizhen Yu, Wei Yang
Recent studies have indicated that long noncoding RNAs (lncRNAs) play important roles in multiple processes, such as epigenetic regulation, gene expression regulation, development, nutrition-related and other diseases, toxic response, and response to drugs. Although the functional roles and mechanisms of several lncRNAs have been discovered, a better understanding of the vast majority of lncRNAs remains elusive. To understand the functional roles and mechanisms of lncRNAs is critical because these transcripts represent the majority of the transcriptional output of the mammalian genome...
June 20, 2017: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/28634707/parent-support-of-preschool-peer-relationships-in-younger-siblings-of-children-with-autism-spectrum-disorder
#9
Annette Estes, Jeffrey Munson, Tanya St John, Stephen R Dager, Amy Rodda, Kelly Botteron, Heather Hazlett, Robert T Schultz, Lonnie Zwaigenbaum, Joseph Piven, Michael J Guralnick
Preschool-aged siblings of children with ASD are at high-risk (HR) for ASD and related challenges, but little is known about their emerging peer competence and friendships. Parents are the main providers of peer-relationship opportunities during preschool. Understanding parental challenges supporting early peer relationships is needed for optimal peer competence and friendships in children with ASD. We describe differences in peer relationships among three groups of preschool-aged children (15 HR-ASD, 53 HR-NonASD, 40 low-risk, LR), and examine parent support activities at home and arranging community-based peer activities...
June 20, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28634468/fragile-x-syndrome-prevalence-treatment-and-prevention-in-china
#10
REVIEW
Manman Niu, Ying Han, Angel Belle C Dy, Junbao Du, Hongfang Jin, Jiong Qin, Jing Zhang, Qinrui Li, Randi J Hagerman
Fragile X syndrome (FXS) is the most common inherited cause of intellectual disability and the leading monogenic cause of autism spectrum disorder. Although FXS has been studied for several decades, there is relatively little basic science or clinical research being performed on FXS in China. Indeed, there is a large gap between China and Western countries in the FXS field. China has a potentially large number of FXS patients. However, many of them are underdiagnosed or even misdiagnosed, and treatments are not always administered in the Chinese population...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28633887/visual-integration-of-fear-and-anger-emotional-cues-by-children-on-the-autism-spectrum-and-neurotypical-peers-an-eeg-study
#11
Evie Malaia, Debbie Cockerham, Katherine Rublein
Communication deficits in children with autism spectrum disorders (ASD) are often related to inefficient interpretation of emotional cues, which are conveyed visually through both facial expressions and body language (Apicella et al., 2012). The present study examined ASD behavioral and ERP responses to emotional expressions of anger and fear, as conveyed by the face and body. Behavioral results showed significantly faster response times for the ASD than for the typically developing (TD) group when processing fear, but not anger, in isolated face expressions, isolated body expressions, and in the integration of the two...
June 17, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28633299/structural-covariance-networks-in-children-with-autism-or-adhd
#12
R A I Bethlehem, R Romero-Garcia, E Mak, E T Bullmore, S Baron-Cohen
Background: While autism and attention-deficit/hyperactivity disorder (ADHD) are considered distinct conditions from a diagnostic perspective, clinically they share some phenotypic features and have high comorbidity. Regardless, most studies have focused on only one condition, with considerable heterogeneity in their results. Taking a dual-condition approach might help elucidate shared and distinct neural characteristics. Method: Graph theory was used to analyse topological properties of structural covariance networks across both conditions and relative to a neurotypical (NT; n = 87) group using data from the ABIDE (autism; n = 62) and ADHD-200 datasets (ADHD; n = 69)...
June 13, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28632930/long-term-follow-up-of-intra-cytoplasmic-sperm-injection-conceived-offspring-compared-with-in%C3%A2-vitro-fertilization-conceived-offspring-a-systematic-review-of-health-outcomes-beyond-the-neonatal-period
#13
REVIEW
S R Catford, R I McLachlan, M K O'Bryan, J L Halliday
The use of intra-cytoplasmic sperm injection (ICSI) has increased significantly worldwide, often chosen instead of in vitro fertilization (IVF), yet long-term health outcomes are unknown and health differences between ICSI and IVF conceptions have not been comprehensively assessed. A systematic review of health outcomes of ICSI-conceived offspring beyond the neonatal period compared to IVF-conceived offspring was carried out. PubMed, OVID Medline/Embase, Informit, Web of Science and Proquest databases were searched on 9 November 2016 for studies reporting on health outcomes in ICSI-conceived offspring beyond 28 days after birth...
June 20, 2017: Andrology
https://www.readbyqxmd.com/read/28632303/audition-specific-temporal-processing-deficits-associated-with-language-function-in-children-with-autism-spectrum-disorder
#14
Jennifer H Foss-Feig, Kimberly B Schauder, Alexandra P Key, Mark T Wallace, Wendy L Stone
Sensory processing alterations are highly prevalent in autism spectrum disorder (ASD). Neurobiologically-based theories of ASD propose that abnormalities in the processing of temporal aspects of sensory input could underlie core symptoms of ASD. For example, rapid auditory temporal processing is critical for speech perception, and language difficulties are central to the social communication deficits defining the disorder. This study assessed visual and auditory temporal processing abilities and tested their relation to core ASD symptoms...
June 20, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/28630819/concerns-about-the-registered-behavior-technician%C3%A2-in-relation-to-effective-autism-intervention
#15
Justin B Leaf, Ronald Leaf, John McEachin, Mitchell Taubman, Tristram Smith, Sandra L Harris, B J Freeman, Toby Mountjoy, Tracee Parker, Todd Streff, Fred R Volkmar, Andi Waks
In 2014, the Behavior Analyst Certification Board (BACB®) initiated a program for credentialing behavior technicians. The new credential, Registered Behavior Technician™ (RBT®), is for providers of behavioral intervention to a wide range of individuals with mental health needs and developmental delays, including individuals diagnosed with autism spectrum disorder (ASD). The RBT® would represent the entry-level position within the range of the BACB® credentials. Despite the increasing acceptance of this newest level of credential from the behavioral community, the authors of this paper have substantial concerns with the RBT® credential as it relates to the delivery of intervention to individuals diagnosed with ASD...
June 2017: Behavior Analysis in Practice
https://www.readbyqxmd.com/read/28630661/intrainsular-connectivity-and-somatosensory-responsiveness-in-young-children-with-asd
#16
Michelle D Failla, Brittany R Peters, Haleh Karbasforoushan, Jennifer H Foss-Feig, Kimberly B Schauder, Brynna H Heflin, Carissa J Cascio
BACKGROUND: The human somatosensory system comprises dissociable paths for discriminative and affective touch, reflected in separate peripheral afferent populations and distinct cortical targets. Differences in behavioral and neural responses to affective touch may have an important developmental role in early social experiences, which are relevant for autism spectrum disorder (ASD). METHODS: Using probabilistic tractography, we compared the structural integrity of white matter pathways for discriminative and affective touch in young children with ASD and their typically developing (TD) peers...
2017: Molecular Autism
https://www.readbyqxmd.com/read/28630658/evidence-of-mitochondrial-dysfunction-in-autism-biochemical-links-genetic-based-associations-and-non-energy-related-mechanisms
#17
REVIEW
Keren K Griffiths, Richard J Levy
Autism spectrum disorder (ASD), the fastest growing developmental disability in the United States, represents a group of neurodevelopmental disorders characterized by impaired social interaction and communication as well as restricted and repetitive behavior. The underlying cause of autism is unknown and therapy is currently limited to targeting behavioral abnormalities. Emerging studies suggest a link between mitochondrial dysfunction and ASD. Here, we review the evidence demonstrating this potential connection...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28630308/measuring-shared-variants-in-cohorts-of-discordant-siblings-with-applications-to-autism
#18
Kenny Ye, Ivan Iossifov, Dan Levy, Boris Yamrom, Andreas Buja, Abba M Krieger, Michael Wigler
We develop a method of analysis [affected to discordant sibling pairs (A2DS)] that tests if shared variants contribute to a disorder. Using a standard measure of genetic relation, test individuals are compared with a cohort of discordant sibling pairs (CDS) to derive a comparative similarity score. We ask if a test individual is more similar to an unrelated affected than to the unrelated unaffected sibling from the CDS and then, sum over such individuals and pairs. Statistical significance is judged by randomly permuting the affected status in the CDS...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28629645/atypical-activation-of-action-semantic-network-in-adolescents-with-autism-spectrum-disorder
#19
Tracey A Knaus, Claire Burns, Jodi Kamps, Anne L Foundas
In typical adults, fMRI studies have shown activation of primary and pre-motor regions during action word processing. Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by social and communication impairments. ASD studies have shown atypical semantic processing and motor deficits. The objective of this study was to examine semantic processing of verbs in ASD. 15 ASD adolescents and 19 typically developing adolescents, 11-16years, completed a semantic similarity judgment task during fMRI...
June 16, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28627743/polygenic-scores-for-schizophrenia-and-educational-attainment-are-associated-with-behavioural-problems-in-early-childhood-in-the-general-population
#20
Philip R Jansen, Tinca J C Polderman, Koen Bolhuis, Jan van der Ende, Vincent W V Jaddoe, Frank C Verhulst, Tonya White, Danielle Posthuma, Henning Tiemeier
BACKGROUND: Genome-wide association studies in adults have identified numerous genetic variants related to psychiatric disorders and related traits, such as schizophrenia and educational attainment. However, the effects of these genetic variants on behaviour in the general population remain to be fully understood, particularly in younger populations. We investigated whether polygenic scores of five psychiatric disorders and educational attainment are related to emotional and behaviour problems during early childhood...
June 19, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
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