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Autism Spectrum Disorders

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https://www.readbyqxmd.com/read/29057625/%C3%AE-2-glycine-receptors-modulate-adult-hippocampal-neurogenesis-and-spatial-memory
#1
Min-Shan Lin, Wen-Chao Xiong, Shu-Ji Li, Zhi Gong, Xiong Cao, Xiao-Jing Kuang, Yuan Zhang, Tian-Ming Gao, Naguib Mechawar, Ce Liu, Xin-Hong Zhu
The α2-glycine receptors (GlyRs) play important roles during early central nervous system development. However, these receptors' possible involvement in neurodevelopmental events occurring in the adult brain remains to be explored. Adult hippocampal neurogenesis (AHN) is the process by which new granule cell neurons are added to the dentate gyrus (DG) throughout adulthood. In this study, we observed that hippocampal adult neural stem cells (ANSCs) express α2-containing GlyRs. Pharmacological inhibition of GlyRs by strychnine or picrotoxin decreased the proliferation of ANSCs, both in vivo and in vitro...
October 23, 2017: Developmental Neurobiology
https://www.readbyqxmd.com/read/29057566/diminished-socially-selective-neural-processing-in-5-month-old-infants-at-high-familial-risk-for-autism
#2
Ricarda Braukmann, Sarah Lloyd-Fox, Anna Blasi, Mark H Johnson, Harold Bekkering, Jan K Buitelaar, Sabine Hunnius
The social and communicative difficulties that characterize Autism Spectrum Disorder (ASD) are considered the most striking feature of the disorder. Research has reported that individuals with ASD show abnormalities in the brain regions associated with the processing of social information. Importantly, a recent study using functional near-infrared spectroscopy (fNIRS) found the first evidence of atypicalities in the neural processing of social information in four to six-month-old infants at high familial risk for ASD...
October 23, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29057543/cortical-responses-before-six-months-of-life-associate-with-later-autism
#3
S Lloyd-Fox, A Blasi, G Pasco, T Gliga, E J Jones, D G Murphy, C E Elwell, T Charman, M H Johnson
Autism Spectrum Disorder (ASD) is a common, highly heritable, developmental disorder, and later-born siblings of diagnosed children are at higher risk for developing ASD than the general population. Although the emergence of behavioural symptoms of ASD in toddlerhood is well characterised, far less is known about development during the first months of life of infants at familial risk. In a prospective longitudinal study of infants at familial risk followed to 36 months, we measured functional near infrared spectroscopy (fNIRS) brain responses to social videos of people (i...
October 23, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29057532/lobular-patterns-of-cerebellar-resting-state-connectivity-in-adults-with-autism-spectrum-disorder
#4
Giusy Olivito, Michela Lupo, Fiorenzo Laghi, Silvia Clausi, Roberto Baiocco, Mara Cercignani, Marco Bozzali, Maria Leggio
Autism Spectrum disorder is a neurodevelopmental disorder characterized by core deficits in social functioning. Core autistics traits refer to poor social and imagination skills, poor attention-switching/strong focus of attention, exceptional attention to detail, as expressed by the Autism-Spectrum Quotient. Over the years, the importance of the cerebellum in the etiology of Autism Spectrum Disorder has been acknowledged. Neuroimaging studies have provided a strong support to this view, showing both structural and functional connectivity alterations to affect the cerebellum in Autism Spectrum Disorder...
October 23, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29057009/behavioral-comparisons-in-autism-spectrum-disorder-and-developmental-coordination-disorder-a-systematic-literature-review
#5
Priscila Caçola, Haylie L Miller, Peace Ossom Williamson
BACKGROUND: Autism Spectrum Disorder (ASD) and Developmental Coordination Disorder (DCD) are developmental disorders that, since the DSM-5, can be diagnosed as co-occurring conditions. While some recent studies suggest that ASD and DCD have similar traits, others show clear behavioral distinctions between the two conditions. By gathering all studies that included (1) an ASD group and a DCD group, (2) an ASD+DCD group and a DCD group, or (3) ASD, ASD+DCD, and DCD groups, we aimed to identify similarities and differences in behaviors between the two disorders...
June 2017: Research in Autism Spectrum Disorders
https://www.readbyqxmd.com/read/29056847/examining-services-for-young-children-with-autism-spectrum-disorder-parent-satisfaction-and-predictors-of-service-utilization
#6
Laura Lee McIntyre, Patricia K Zemantic
Autism spectrum disorder (ASD) is the fastest growing group of neurodevelopmental disorders in childhood. Earlier detection means an increased need for early intervention and other educational services. This study examined what services a sample of young children with ASD received, what variables predicted service utilization, and how satisfied parents were with the services. Sixty children (2-7 years) and their families from the Northwestern United States participated in the study. Results suggest that, on average, children received 13 hours of educational and therapeutic services per week, with younger children receiving fewer services than older children...
November 2017: Early Childhood Education Journal
https://www.readbyqxmd.com/read/29056086/prevalence-and-correlates-of-autism-spectrum-disorders-in-quebec
#7
Fatoumata Binta Diallo, Éric Fombonne, Steve Kisely, Louis Rochette, Helen-Maria Vasiliadis, Alain Vanasse, Manon Noiseux, Éric Pelletier, Johanne Renaud, Danielle St-Laurent, Alain Lesage
OBJECTIVE: To estimate the prevalence, comorbidities, and service use of people with autism spectrum disorders (ASDs) based on data from Quebec Integrated Chronic Diseases Surveillance System (QICDSS). METHODS: We included all residents up to age 24 eligible for health plan coverage who were in Quebec for at least 1 day from January 1, 1996, to March 31, 2015. To be considered as having an ASD, an individual had to have had at least 1 physician claim or hospital discharge abstract from 2000 to 2015 indicating one of the following ASD diagnosis codes: ICD-9 codes 299...
January 1, 2017: Canadian Journal of Psychiatry. Revue Canadienne de Psychiatrie
https://www.readbyqxmd.com/read/29055254/the-effect-of-visual-cues-on-performance-in-the-ultimatum-game-in-individuals-with-autism-spectrum-disorder
#8
Daisuke Ikuse, Masayuki Tani, Takashi Itahashi, Hiroki Yamada, Haruhisa Ohta, Teppei Morita, Gousuke Arai, Nobuyuki Saga, Takahiro Tokumasu, Marie Ohta, Ayaka Sato, Akira Iwanami
The Ultimatum Game (UG) allows for the assessment of altruistic behavior as well as the perception of fairness. We examined the effects of visual social cues (gaze of others), factors associated with autism, and trust on UG performance in typical adults (TAs) and individuals with autism spectrum disorder (ASD). We hypothesized that individuals with ASD would be less affected by visual social cues than TAs. We recruited 30 TAs and 30 individuals with ASD. Participants completed 30 trials of the UG, during which the visual background was altered to include either stylized eyespots, flowers, or a neutral background...
October 5, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29054034/an-exploration-of-common-dopaminergic-variants-and-behavior-problems-in-siblings-at-high-risk-for-autism-spectrum-disorder
#9
Devon N Gangi, Lauren V Usher, Daniel S Messinger
Younger siblings of children with ASD often exhibit elevated internalizing and externalizing problems. We investigated common dopaminergic variants (DRD4 and DRD2) in relation to behavior problems at 36 months. Genotypes linked to less efficient dopaminergic functioning were associated with higher internalizing problems in high-risk siblings.
October 17, 2017: Infant Behavior & Development
https://www.readbyqxmd.com/read/29054024/social-skills-plus-relaxation-training-with-a-child-with-asd-in-the-schools
#10
Margaret T Floress, Kim Zoder-Martell, Rachel Schaub
A social skills plus relaxation training (SSRT) program was developed using direct training, relaxation training, and reinforcement principles. The aim was to examine the effectiveness of SSRT on increasing the frequency of three target behaviors for one 8-year-old, student classified with autism spectrum disorder (ASD). A multiple-baseline across behaviors design was used to evaluate the effects of SSRT. During baseline, intervention, and maintenance sessions the student's responses were videotaped and then subsequently viewed and coded after the session...
October 17, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/29053124/-the-efficacy-of-cerebrolysin-in-the-treatment-of-autism-spectrum-disorders
#11
L S Chutko, E A Yakovenko, S Yu Surushkina, E M Kryukova, S V Palaieva
AIM: To evaluate clinical and neurophysiological changes in children with different variants of autism spectrum disorders during treatment with cerebrolysin. MATERIAL AND METHODS: Forty-three children with autism spectrum disorders, aged 4-6 years, were included in the study. To assess the degree of autism, the quantitative scale of assessing the severity of child autism CARS ('Childhood Autism Rating Scale') was used. A comparative analysis of the clinical picture of disease and data of the electroencephalographic examination in endogenous and exogenous (organic) variant of autism was made...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/29052841/cognitive-mechanisms-of-inhibitory-control-deficits-in-autism-spectrum-disorder
#12
Lauren M Schmitt, Stormi P White, Edwin H Cook, John A Sweeney, Matthew W Mosconi
BACKGROUND: Inhibitory control deficits are common in autism spectrum disorder (ASD) and associated with more severe repetitive behaviors. Inhibitory control deficits may reflect slower execution of stopping processes, or a reduced ability to delay the onset of behavioral responses in contexts of uncertainty. Previous studies have documented relatively spared stopping processes in ASD, but whether inhibitory control deficits in ASD reflect failures to delay response onset has not been systematically assessed...
October 20, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/29052838/research-review-early-intervention-for-infants-and-young-children-with-or-at-risk-of-autism-spectrum-disorder-a-systematic-review
#13
REVIEW
Lorna French, Eilis M M Kennedy
BACKGROUND: There has been increased interest in early screening and intervention for young children with, or at risk of, autism spectrum disorder (ASD). This has generated a debate about the potential harms versus benefits of early identification and treatment. This review aims to identify the evidence base for early intervention in ASD. METHODS: A systematic review searching for randomised controlled trials (RCTs) of interventions for children up to 6 years of age with, or at risk of, ASD was undertaken...
October 20, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/29052463/hot-and-cool-executive-function-in-children-and-adolescents-with-autism-spectrum-disorder-cross-sectional-developmental-trajectories
#14
Evangelia-Chrysanthi Kouklari, Stella Tsermentseli, Claire P Monks
The development of executive function (EF) in autism spectrum disorder (ASD) has only been investigated using "cool"-cognitive-EF tasks. Little is known about the development of "hot"-affective-EF and whether it follows a similar developmental pathway. This study employed a cross-sectional developmental trajectories approach to examine the developmental changes in cool (working memory, inhibition, and planning) and hot EF (delay discounting and affective decision-making) of ASD participants (n = 79) and controls (n = 91) relative to age and IQ, shedding more light on the hot-cool EF organization...
October 20, 2017: Child Neuropsychology: a Journal on Normal and Abnormal Development in Childhood and Adolescence
https://www.readbyqxmd.com/read/29052364/sensorimotor-learning-and-associated-visual-perception-are-intact-but-unrelated-in-autism-spectrum-disorder
#15
Spencer J Hayes, Matthew Andrew, Nathan C Foster, Digby Elliott, Emma Gowen, Simon J Bennett
Humans show an astonishing capability to learn sensorimotor behaviours. However, data from sensorimotor learning experiments suggest the integration of efferent sensorimotor commands, afferent sensorimotor information, and visual consequences of a performed action during learning is different in autism, leading to atypical representation of internal action models. Here, we investigated the generalization of a sensorimotor internal action model formed during sensorimotor learning to a different, but associated, visual perception task...
October 20, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/29052014/predictive-validity-of-a-service-setting-based-measure-to-identify-infancy-mental-health-problems-a-population-based-cohort-study
#16
Janni Ammitzbøll, Lau Caspar Thygesen, Bjørn E Holstein, Anette Andersen, Anne Mette Skovgaard
Measures to identify infancy mental health problems are essential to guide interventions and reduce the risk of developmental psychopathology in early years. We investigated a new service-setting-based measure the Copenhagen Infant Mental Health Screening (CIMHS) within the general child health surveillance by community health nurses (CHN). The study population of 2973 infants was assessed by CIMHS at age 9-10 months. A subsample of 416 children was examined at age 1½ years, using parent interviews including the Child Behavior Checklist (CBCL 1½-5), Check List of Autism and Toddlers (CHAT), Infant-Toddler Symptom Checklist (ITSCL), and the Bayley Scales of Infant and Toddler Development (BSID) and observations of behavior, communication, and interaction...
October 20, 2017: European Child & Adolescent Psychiatry
https://www.readbyqxmd.com/read/29051601/altered-behavioral-and-amygdala-habituation-in-high-functioning-adults-with-autism-spectrum-disorder-an-fmri-study
#17
Friederike I Tam, Joseph A King, Daniel Geisler, Franziska M Korb, Juliane Sareng, Franziska Ritschel, Julius Steding, Katja U Albertowski, Veit Roessner, Stefan Ehrlich
Habituation to repeatedly presented stimuli is an important adaptive property of the nervous system. Autism spectrum disorder (ASD) has been associated with reduced neural habituation, for example in the amygdala, which may be related to social impairments. The main focus of this study was to investigate habituation effects on the level of behavioral responses as well as amygdala responses in adults with ASD during a working memory task flanked by task-irrelevant face stimuli. Twenty-two patients with high-functioning autism and 24 healthy controls (HC) were included in this functional magnetic resonance imaging (fMRI) study...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29051506/an-integrated-eeg-and-eye-tracking-approach-for-the-study-of-responding-and-initiating-joint-attention-in-autism-spectrum-disorders
#18
Lucia Billeci, Antonio Narzisi, Alessandro Tonacci, Beatrice Sbriscia-Fioretti, Luca Serasini, Francesca Fulceri, Fabio Apicella, Federico Sicca, Sara Calderoni, Filippo Muratori
Autism Spectrum Disorders (ASD) are characterised by impairment in joint attention (JA), which has two components: the response to JA and the initiation of JA. Literature suggests a correlation between JA and neural circuitries, although this link is still largely unexplored in ASD. In this pilot study, we aimed at investigating the neural correlates of responding and initiating JA in high-functioning children with ASD and evaluating the changes in brain function and visual pattern after six months of rehabilitative treatment using an integrated EEG/eye-tracking system...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29049464/clustering-of-neuropsychiatric-disease-in-first-degree-and-second-degree-relatives-of-patients-with-amyotrophic-lateral-sclerosis
#19
Margaret O'Brien, Tom Burke, Mark Heverin, Alice Vajda, Russell McLaughlin, John Gibbons, Susan Byrne, Marta Pinto-Grau, Marwa Elamin, Niall Pender, Orla Hardiman
Importance: Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative condition primarily involving the motor system. There is increasing epidemiologic evidence of an association between ALS and a wider spectrum of neurodegenerative and neuropsychiatric disorders among family members, including schizophrenia and psychotic illness and suicidal behavior. Objective: To examine the frequency and range of neuropsychiatric conditions that occur within individual first-degree and second-degree relatives of patients with ALS...
October 16, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/29048417/pathways-from-autism-spectrum-disorder-diagnosis-to-genetic-testing
#20
Krysta S Barton, Holly K Tabor, Helene Starks, Nanibaa' A Garrison, Mercy Laurino, Wylie Burke
PurposeThis study examined challenges faced by families and health providers related to genetic testing for autism spectrum disorder (ASD).MethodsThis qualitative study of 14 parents and 15 health providers identified an unstandardized three-step process for families who pursue ASD genetic testing.ResultsStep 1 is the clinical diagnosis of ASD, confirmed by providers practicing alone or in a team. Step 2 is the offer of genetic testing to find an etiology. For those offered testing, step 3 involves the parents' decision whether to pursue testing...
October 19, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
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