1. Braun J. {{Tightening the Case for Gut Microbiota in Autism-Spectrum Disorder}}. {Cell Mol Gastroenterol Hepatol};2017 (Mar);3(2):131-132.
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2. Brewer N, Young RL, Barnett E. {{Measuring Theory of Mind in Adults with Autism Spectrum Disorder}}. {J Autism Dev Disord};2017 (Mar 09)
Deficits in Theory of Mind (ToM)-the ability to interpret others’ beliefs, intentions and emotions-undermine the ability of individuals with Autism Spectrum Disorder (ASD) to interact in socially normative ways. This study provides psychometric data for the Adult-Theory of Mind (A-ToM) measure using video-scenarios based in part on Happe’s (Instructions for theory of mind story task, 1999) Strange Stories test. The final items discriminated IQ-matched adults with ASD from controls on the social but not the physical items. Additional validity data included a two-component principal components solution, correlations with existing ToM scales, and the absence of correlations with self-report measures of empathy and social anxiety (not requiring inferences about the intent of others). The expected group differences in ToM were accompanied by marked variability in the ASD sample.
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3. Burket JA, Urbano MR, Deutsch SI. {{Sugarcoated Perineuronal Nets Regulate « GABAergic » Transmission: Bittersweet Hypothesis in Autism Spectrum Disorder}}. {Clin Neuropharmacol};2017 (Mar 09)
Fast-spiking, parvalbumin-expressing « GABAergic » interneurons regulate synchronous oscillatory output of pyramidal neurons. Metabolic demands of these GABAergic projections are great because local ion concentrations must be optimally maintained; in addition, high rates of mitochondrial respiration necessitate exquisite redox regulation. Interestingly, only fast-spiking, parvalbumin-expressing basket cells coexpressing 3 metalloproteinases seem to be preferentially enwrapped in perineuronal nets (PNNs), a specialized lattice-like structure of the extracellular matrix. The PNNs maintain optimal local concentrations of ions, protect against oxidative stress, and concentrate transcription factors and chemorepulsive axon guidance cues. The PNNs mediate opening and closing of periods of heightened plasticity. Therapeutic strategies in autism spectrum disorders include promoting both maintenance and deliberate disruption of PNNs to promote new learning and cognitive flexibility.
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4. Eack SM, Wojtalik JA, Keshavan MS, Minshew NJ. {{Social-cognitive brain function and connectivity during visual perspective-taking in autism and schizophrenia}}. {Schizophr Res};2017 (Mar 10)
BACKGROUND: Autism spectrum disorder (ASD) and schizophrenia are neurodevelopmental conditions that are characterized by significant social impairment. Emerging genomic and neurobiological evidence has increasingly pointed to shared pathophysiologic mechanisms in the two disorders. Overlap in social impairment may reflect similar underlying neural dysfunction in social-cognitive brain networks, yet few studies have directly compared brain function and communication between those with ASD and schizophrenia. METHODS: Outpatients with schizophrenia (n=36), ASD (n=33), and healthy volunteers (n=37) completed a visual perspective-taking task during functional neuroimaging at 3T to assess similarities and differences in fronto-temporal brain function and connectivity during social-cognitive processing. Analyses employed general linear models to examine differences in amplitude of BOLD-signal response between disorder groups, and computed functional connectivity coefficients to investigate differences in the connectivity profiles of networks implicated in social cognition. RESULTS: Despite similar behavioral impairments, participants with ASD and schizophrenia evidenced distinct neural abnormalities during perspective-taking. Functional activation results indicated reduced temporo-parietal junction and medial prefrontal activity in ASD compared to schizophrenia (all Puncor<0.002). Functional connectivity analyses further revealed significantly greater local orbitofrontal connectivity in ASD than schizophrenia (all PFDR<0.028) during perspective-taking. Differences in brain activation and connectivity were unrelated to antipsychotic medication dose. CONCLUSIONS: Autism and schizophrenia are characterized by similar social-cognitive impairments that may stem from different underlying abnormalities in the functional organization and communication of the social brain. Lien vers le texte intégral (Open Access ou abonnement)
5. Ellen Selman L, Fox F, Aabe N, Turner K, Rai D, Redwood S. {{‘You are labelled by your children’s disability’ – A community-based, participatory study of stigma among Somali parents of children with autism living in the United Kingdom}}. {Ethn Health};2017 (Mar 02):1-16.
OBJECTIVES: Social stigma is commonly experienced by parents of children with autism. Our aim was to understand the nature of stigma experienced by Somali parents of children with autism in the United Kingdom (UK), and to consider how they coped with or resisted such stigma. DESIGN: We used a community-based participatory research approach, collaborating with a community organisation of Somali parents. In-depth interviews with simultaneous translation were conducted with 15 Somali parents of children with autism living in Bristol, UK, in 2015. Parents were sampled purposively to capture diversity in children’s age, severity of autism and time since diagnosis. Directed thematic analysis used Link and Phelan’s model of stigma. RESULTS: Of the 15 participants, 12 were mothers (mean age 36). The 17 children with autism they cared for were 4-13 years’ old, and five were girls. Two main themes with sub-themes were identified: the nature of stigma (labelling and stereotyping; separation; emotional reactions, discrimination and power), and coping and resistance (the power of language; faith as a resource; learning, peer support and community relationships). Children with autism were labelled and stereotyped (e.g. as ‘sick’, ‘naughty’, ‘different’) and parents blamed for not controlling them, leading to social rejection and isolation. Stigma was associated with a poor understanding of autism, a lack of vocabulary related to autism in the Somali community, and prejudice against mental illness and disability. There was evidence of enacted and felt stigma and examples of discrimination. Finding their own language to describe their child’s condition and drawing on faith, learning and peer support were important resources in resisting stigma. CONCLUSIONS: Findings inform support for this community, highlighting the need to raise awareness of autism, enable parents to speak openly, and ensure appropriate professional services and interventions are available.
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6. Evers K, Van Belle G, Steyaert J, Noens I, Wagemans J. {{Gaze-Contingent Display Changes as New Window on Analytical and Holistic Face Perception in Children With Autism Spectrum Disorder}}. {Child Dev};2017 (Mar 10)
The strength of holistic face perception in children with autism spectrum disorder (ASD) was evaluated by applying the gaze-contingent mask and window technique to a face matching and discrimination task in 6- to 14-year-old children with (n = 36) and without ASD (n = 47), and by examining fixation patterns. Behavioral results suggested a slower and less efficient face processing in the ASD sample compared with the matched control group. Comparing the moving mask and window conditions revealed a reduced holistic face processing bias in the younger age group but not in the older sample. Preferential viewing patterns revealed both similarities and differences between both participant groups.
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7. Fanning PA, Hocking DR, Dissanayake C, Vivanti G. {{Delineation of a spatial working memory profile using a non-verbal eye-tracking paradigm in young children with autism and Williams syndrome}}. {Child Neuropsychol};2017 (Feb 09):1-21.
Working memory deficits profoundly inhibit children’s ability to learn. While deficits have been identified in disorders such as autism spectrum disorder (ASD) and Williams syndrome (WS), findings are equivocal, and very little is known about the nature of these deficits early in development. A major barrier to advances in this area is the availability of tasks suitable for young children with neurodevelopmental disorders who experience difficulties with following verbal instructions or who are distressed by formal testing demands. To address these issues, a novel eye-tracking paradigm was designed based on an adaptation of the classic A not B paradigm in order to examine the early foundations of spatial working memory capabilities in 26 developmentally delayed preschool children with ASD, 18 age- and IQ-matched children with WS, and 19 age-matched typically-developing (TD) children. The results revealed evidence that foundational spatial working memory performance in ASD and WS was comparable with that of TD children. Performance was associated with intellectual ability in the ASD and TD groups, but not in the WS group. Performance was not associated with adaptive behavior in any group. These findings are discussed in the context of previous research that has been largely limited to older and substantially less developmentally delayed children with these neurodevelopmental disorders.
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8. Fluegge K. {{Humoral immunity and autism spectrum disorders}}. {Immunol Lett};2017 (Mar 10)
Abnormal immune activation, particularly of a humoral nature, has consistently been described in the etiopathogenesis of autism spectrum disorders (ASD). In this journal, Mead and Ashwood (2015) reviewed immune abnormalities in autism and linked them to severity of classic autistic symptoms. However, there remains a lack of clarity as to how environmental risk factors in ASD may contribute to such immunophenotypes. The evidence presented herein highlights these immune deficits of a humoral nature in ASD. Moreover, aligned with prior research showing a link between chronic air pollution and suppression of humoral immunity, the author of this commentary has proposed that environmental exposure to pervasive air pollutants, particularly nitrous oxide (N2O), may target several anti-inflammatory biomarkers, including alpha 7 nicotinic acetylcholine receptor (alpha7nAChR) inhibition and stimulation of kappa opioid receptor (KOR) activity. Given that these physiological targets, in particular, may promote the oft-noted humoral immunophenotypes in ASD, including B cell survival and muted antibody responses, this correspondence supports an existing line of evidence that air pollution, and particularly exposure to environmental N2O, may be an important etiological risk factor in ASD.
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9. Fridenson-Hayo S, Berggren S, Lassalle A, Tal S, Pigat D, Meir-Goren N, O’Reilly H, Ben-Zur S, Bolte S, Baron-Cohen S, Golan O. {{‘Emotiplay’: a serious game for learning about emotions in children with autism: results of a cross-cultural evaluation}}. {Eur Child Adolesc Psychiatry};2017 (Mar 08)
Children with autism spectrum conditions (ASC) experience difficulties recognizing others’ emotions and mental states. It has been shown that serious games (SG) can produce simplified versions of the socio-emotional world. The current study performed a cross-cultural evaluation (in the UK, Israel and Sweden) of Emotiplay’s SG, a system aimed to teach emotion recognition (ER) to children with ASC in an entertaining, and intrinsically motivating way. Participants were 6-9 year olds with high functioning ASC who used the SG for 8-12 weeks. Measures included face, voice, body, and integrative ER tasks, as well as parent-reported level of autism symptoms, and adaptive socialization. In the UK, 15 children were tested before and after using the SG. In Israel (n = 38) and Sweden (n = 36), children were randomized into a SG or a waiting list control group. In the UK, results revealed that 8 weeks of SG use significantly improved participants’ performance on ER body language and integrative tasks. Parents also reported their children improved their adaptive socialization. In Israel and Sweden, participants using the SG improved significantly more than controls on all ER measures. In addition, parents in the Israeli SG group reported their children showed reduced autism symptoms after using the SG. In conclusion, Emotiplay’s SG is an effective and motivating psycho-educational intervention, cross-culturally teaching ER from faces, voices, body language, and their integration in context to children with high functioning ASC. Local evidence was found for more generalized gains to socialization and reduced autism symptoms.
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10. Gardiner E, Hutchison SM, Muller U, Kerns KA, Iarocci G. {{Assessment of executive function in young children with and without ASD using parent ratings and computerized tasks of executive function}}. {Clin Neuropsychol};2017 (Feb 16):1-23.
OBJECTIVE: The current study investigated executive function (EF) in young children with and without autism spectrum disorder (ASD) using multiple methods of assessment. METHOD: Young children (M = 63.2 months) with and without ASD, matched on age, IQ, and maternal education, were assessed on computerized measures of working memory, inhibition, flexibility, and planning. Parents completed a behavior rating scale assessing children’s EF within everyday contexts. RESULTS: There were no significant group differences on working memory, inhibition, flexibility, or planning. The mean difference on one aspect of the planning task (number of correct trials), however, approached significance and showed a medium to large effect size. There was also a significant difference between groups on the EF behavior rating scale, indicating that participants with ASD demonstrated greater executive dysfunction, as indexed by parent report. CONCLUSIONS: The results suggest that in young children with ASD, EF difficulties may only become apparent when situational demands require coordinating multiple abilities, as assessed with scales indexing children’s abilities to manage their day-to-day EF-related behavior. We suggest that multiple methods are needed to achieve a comprehensive and valid EF assessment in young children with ASD.
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11. Graf WD, Miller G, Epstein LG, Rapin I. {{The autism « epidemic »: Ethical, legal, and social issues in a developmental spectrum disorder}}. {Neurology};2017 (Mar 08)
Classic autism has gradually evolved into the concept of a larger « spectrum disorder. » The rising prevalence of autism and autism spectrum disorder (autism/ASD) diagnoses can be largely attributed to broader diagnostic criteria, adoption of dimensional assessment strategies, increased awareness, linking of services to diagnosis, and the inclusion of milder neurodevelopmental differences bordering on normality. The spectrum disorder diagnosis raises numerous bioethical issues for individuals and society. Three groups of caregivers have important ethical, legal, and social obligations to individuals with autism/ASD: (1) families and advocates of individuals with autism/ASD; (2) health care and other professionals; and (3) governments. Each group may have different views of autism/ASD diagnostic criteria, screening, testing, and the effectiveness of various interventions. All see timely diagnosis as desirable, but earlier diagnosis may not be better, morally or practically. The growing practice of genetic testing in milder ASD raises ethical questions because of its uncertain scientific validity and limited clinical utility. Individuals with autism/ASD have various kinds of needs but all want acceptance and most deserve better accommodations. Governments struggle to provide a fair allocation of appropriate special education and supportive services. This article examines the evolving dimensions of the autism/ASD diagnosis, outlines certain bioethics principles related to its evaluation and management, reviews relevant laws and disability rights, and emphasizes the societal obligation to recognize neurodevelopmental variation and human neurodiversity. Future directions in the evaluation and care of autism/ASD should attempt to integrate the roles and responsibilities of all agents caring for each unique autistic individual.
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12. Guo H, Peng Y, Hu Z, Li Y, Xun G, Ou J, Sun L, Xiong Z, Liu Y, Wang T, Chen J, Xia L, Bai T, Shen Y, Tian Q, Hu Y, Shen L, Zhao R, Zhang X, Zhang F, Zhao J, Zou X, Xia K. {{Genome-wide copy number variation analysis in a Chinese autism spectrum disorder cohort}}. {Sci Rep};2017 (Mar 10);7:44155.
Autism spectrum disorder (ASD) describes a group of neurodevelopmental disorders with high heritability, although the underlying genetic determinants of ASDs remain largely unknown. Large-scale whole-genome studies of copy number variation in Han Chinese samples are still lacking. We performed a genome-wide copy number variation analysis of 343 ASD trios, 203 patients with sporadic cases and 988 controls in a Chinese population using Illumina genotyping platforms to identify CNVs and related genes that may contribute to ASD risk. We identified 32 rare CNVs larger than 1 Mb in 31 patients. ASD patients were found to carry a higher global burden of rare, large CNVs than controls. Recurrent de novo or case-private CNVs were found at 15q11-13, Xp22.3, 15q13.1-13.2, 3p26.3 and 2p12. The de novo 15q11-13 duplication was more prevalent in this Chinese population than in those with European ancestry. Several genes, including GRAMD2 and STAM, were implicated as novel ASD risk genes when integrating whole-genome CNVs and whole-exome sequencing data. We also identified several CNVs that include known ASD genes (SHANK3, CDH10, CSMD1) or genes involved in nervous system development (NYAP2, ST6GAL2, GRM6). Besides, our study also implicated Contactins-NYAPs-WAVE1 pathway in ASD pathogenesis. Our findings identify ASD-related CNVs in a Chinese population and implicate novel ASD risk genes and related pathway for further study.
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13. Hartley SL, DaWalt LS, Schultz HM. {{Daily Couple Experiences and Parent Affect in Families of Children with Versus Without Autism}}. {J Autism Dev Disord};2017 (Mar 09)
We examined daily couple experiences in 174 couples who had a child with autism spectrum disorder (ASD) relative to 179 couples who had a child without disabilities and their same-day association with parent affect. Parents completed a 14-day daily diary in which they reported time with partner, partner support, partner closeness, and positive and negative couple interactions and level of positive and negative affect. One-way multivariate analyses of covariance and dyadic multilevel models were conducted. Parents of children with ASD reported less time with partner, lower partner closeness, and fewer positive couple interactions than the comparison group. Daily couple experiences were more strongly associated with parent affect in the ASD than comparison group. Findings have implications for programs and supports.
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14. Jeste SS, Schor NF. {{Autism today: Have we put the cart before the horse?}}. {Neurology};2017 (Mar 08)
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15. Khanlou N, Mustafa N, Vazquez LM, Davidson D, Yoshida K. {{Mothering children with developmental disabilities: A critical perspective on health promotion}}. {Health Care Women Int};2017 (Feb 22):1-22.
We present findings of a qualitative study exploring what constitutes relevant health promotion initiatives for immigrant mothers of children with developmental disabilities. We apply a social ecological approach, with a focus on gender-specific and transformative health promotion, to examine factors impacting mothers’ health and wellbeing. Twenty-eight semi-structured and open-ended interviews were conducted with immigrant mothers in the greater Toronto area, Canada. Mothers identified facilitators, challenges, and strategies for their health promotion, providing relevant insights for meaningful intervention. Our findings show that immigrant mothers’ health is influenced by intersecting social determinants of health, including migration status, gender, and disability.
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16. Kryzak LA, Jones EA. {{Sibling self-management: Programming for generalization to improve interactions between typically developing siblings and children with autism spectrum disorders}}. {Dev Neurorehabil};2017 (Mar 09):1-13.
The present study taught typically developing (TD) siblings of children with autism spectrum disorders (ASD) social-communicative and self-management skills. The authors’ hypothesized that the acquisition of self-management skills would support generalization of targeted social-communicative responses. A multiple baseline probe design across sibling dyads was used to decrease exposure to unnecessary sessions in the absence of intervention. Four TD siblings were taught self-management of a social skills curriculum using behavioral skills training, which consisted of instructions, modeling, practice, and subsequent feedback. Results indicated that TD siblings learned to self-manage the social skills curriculum with some generalization across novel settings and over time. Comparisons of social-communicative responses to their typical peers provided some support for the social validity of the intervention outcomes. These results support the use of self-management, when explicitly programming for generalization, which continues to be a key consideration when including TD siblings in interventions with their siblings with ASD.
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17. Li D, Karnath HO, Xu X. {{Candidate Biomarkers in Children with Autism Spectrum Disorder: A Review of MRI Studies}}. {Neurosci Bull};2017 (Apr);33(2):219-237.
Searching for effective biomarkers is one of the most challenging tasks in the research field of Autism Spectrum Disorder (ASD). Magnetic resonance imaging (MRI) provides a non-invasive and powerful tool for investigating changes in the structure, function, maturation, connectivity, and metabolism of the brain of children with ASD. Here, we review the more recent MRI studies in young children with ASD, aiming to provide candidate biomarkers for the diagnosis of childhood ASD. The review covers structural imaging methods, diffusion tensor imaging, resting-state functional MRI, and magnetic resonance spectroscopy. Future advances in neuroimaging techniques, as well as cross-disciplinary studies and large-scale collaborations will be needed for an integrated approach linking neuroimaging, genetics, and phenotypic data to allow the discovery of new, effective biomarkers.
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18. Liu S, Zhou L, Yuan H, Vieira M, Sanz-Clemente A, Badger JD, 2nd, Lu W, Traynelis SF, Roche KW. {{A rare variant identified within the GluN2B C-terminus in a patient with autism affects NMDA receptor surface expression and spine density}}. {J Neurosci};2017 (Mar 10)
NMDA receptors (NMDARs) are ionotropic glutamate receptors that are crucial for neuronal development and higher cognitive processes. NMDAR dysfunction is involved in a variety of neurological and psychiatric diseases; however, the mechanistic link between the human pathology and NMDAR dysfunction is poorly understood. Rare missense variants within NMDAR subunits have been identified in numerous patients with mental or neurological disorders. We specifically focused on the GluN2B NMDAR subunit, which is highly expressed in the hippocampus and cortex throughout development. We analyzed several variants located in the GluN2B C-terminus, and found that 3 variants in patients with autism (S1415L) or schizophrenia (L1424F and S1452F) (S1413L, L1422F, S1450F in rodents, respectively) displayed impaired binding to MAGUK proteins. In addition, we observed a deficit in surface expression for GluN2B S1413L. Furthermore, there were fewer dendritic spines in GluN2B S1413L-expressing neurons. Importantly, synaptic NMDAR currents in neurons transfected with GluN2B S1413L in GluN2A/B deficient mouse brain slices revealed only partial rescue of synaptic current amplitude. Functional properties of GluN2B S1413L in recombinant systems revealed no change in receptor properties, consistent with synaptic defects being the result of reduced trafficking and targeting of GluN2B S1413L to the synapse. Thus, we find that GluN2B S1413L displays deficits in NMDAR trafficking, synaptic currents, and spine density, raising the possibility that this mutation may contribute to the phenotype in this autism patient. More broadly, our research demonstrates that the targeted study of certain residues in NMDARs based on rare variants identified in patients is a powerful approach to study receptor function.SIGNIFICANCE STATEMENTWe have used a bedside to bench approach to investigate the functional regulation of NMDA receptors (NMDARs). Using information from deep sequencing of patients with neurological or psychiatric disorders, we investigated missense variants identified in the intracellular C-terminal domain of the GluN2B NMDAR subunit. We found several variants that displayed altered properties. In particular, one variant identified in a patient with autism, human GluN2B S1415L, displayed reduced surface expression and binding to PSD-95. Furthermore expression of GluN2B S1415L (S1413L in mouse) showed a deficit in rescue of synaptic NMDAR currents and fewer dendritic spines, consistent with other reports of spine abnormalities being associated with autism. More broadly, we demonstrate that using patient data is an effective approach to probe the structure/function relationship of NMDARs.
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19. Lortie M, Proulx-Begin L, Saint-Amour D, Cousineau D, Theoret H, Lepage JF. {{Brief Report: Biological Sound Processing in Children with Autistic Spectrum Disorder}}. {J Autism Dev Disord};2017 (Mar 10)
There is debate whether social impairments in autism spectrum disorder (ASD) are truly domain-specific, or if they reflect generalized deficits in lower-level cognitive processes. To solve this issue, we used auditory-evoked EEG responses to assess novelty detection (MMN component) and involuntary attentional orientation (P3 component) induced by socially-relevant, human-produced, biological sounds and acoustically-matched control stimuli in children with ASD and controls. Results show that early sensory and novelty processing of biological stimuli are preserved in ASD, but that automatic attentional orientation for biological sounds is markedly altered. These results support the notion that at least some cognitive processes of ASD are specifically altered when it comes to processing social stimuli.
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20. Luna RA, Oezguen N, Balderas M, Venkatachalam A, Runge JK, Versalovic J, Veenstra-VanderWeele J, Anderson GM, Savidge T, Williams KC. {{Distinct Microbiome-Neuroimmune Signatures Correlate With Functional Abdominal Pain in Children With Autism Spectrum Disorder}}. {Cell Mol Gastroenterol Hepatol};2017 (Mar);3(2):218-230.
BACKGROUND & AIMS: Emerging data on the gut microbiome in autism spectrum disorder (ASD) suggest that altered host-microbe interactions may contribute to disease symptoms. Although gut microbial communities in children with ASD are reported to differ from individuals with neurotypical development, it is not known whether these bacteria induce pathogenic neuroimmune signals. METHODS: Because commensal clostridia interactions with the intestinal mucosa can regulate disease-associated cytokine and serotonergic pathways in animal models, we evaluated whether microbiome-neuroimmune profiles (from rectal biopsy specimens and blood) differed in ASD children with functional gastrointestinal disorders (ASD-FGID, n = 14) compared with neurotypical (NT) children with FGID (NT-FGID, n = 15) and without abdominal pain (NT, n = 6). Microbial 16S ribosomal DNA community signatures, cytokines, and serotonergic metabolites were quantified and correlated with gastrointestinal symptoms. RESULTS: A significant increase in several mucosa-associated Clostridiales was observed in ASD-FGID, whereas marked decreases in Dorea and Blautia, as well as Sutterella, were evident. Stratification by abdominal pain showed multiple organisms in ASD-FGID that correlated significantly with cytokines (interleukin [IL]6, IL1, IL17A, and interferon-gamma). Group comparisons showed that IL6 and tryptophan release by mucosal biopsy specimens was highest in ASD children with abdominal pain, whereas serotonergic metabolites generally were increased in children with FGIDs. Furthermore, proinflammatory cytokines correlated significantly with several Clostridiales previously reported to associate with ASD, as did tryptophan and serotonin. CONCLUSIONS: Our findings identify distinctive mucosal microbial signatures in ASD children with FGID that correlate with cytokine and tryptophan homeostasis. Future studies are needed to establish whether these disease-associated Clostridiales species confer early pathogenic signals in children with ASD and FGID.
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21. Matin Sadr N, Haghgoo HA, Samadi SA, Rassafiani M, Bakhshi E, Hassanabadi H. {{The Impact of Dynamic Seating on Classroom Behavior of Students with Autism Spectrum Disorder}}. {Iran J Child Neurol};2017 (Winter);11(1):29-36.
OBJECTIVE: Children with autism have sitting and on-task behavior problems in class. In this study, the effect of three alternative classroom-seating devices such as regular classroom chairs, therapy balls, and air cushions were examined on students’ classroom behavior. MATERIALS & METHODS: 15 students with autism participated in this A1-B-A2-C multiple treatments study from Mashhad’s Tabasom School, Mashhad, Iran in 2014. Students’ behaviors were video recorded in three phases: sitting on their common chairs during phase A, air-sit cushioned in phase B, and ball chairs in phase C. Sitting times and on-task behaviors were quantified by momentary time sampling and compared during different phases for important changes during 8 wk. Additionally, the Gilliam Autism Rating Scale-Second Edition test was used to examine stereotyped movements, social and communication skills of the students in the before and after research. RESULTS: Significant increases in in-seat behaviors in 86.7% (thirteen out of 15) of the students and on-task behaviors in 53.3% of the students (eight out of 15) when seated on therapy balls. Air cushions had no significant effects on in-seat/on-task behaviors. The results also showed significant decrease in stereotyped movement and increase in communication and social skills of these students. The teachers also preferred the use of the balls and/or air-cushioned chairs for their students. CONCLUSION: Therapy ball chairs facilitated in-seat behavior and decreased autism related behavior of the students with Autism Spectrum Disorder in class.
22. Petty JD, Pan Z, Dechant B, Gabriels RL. {{Therapeutic Horseback Riding Crossover Effects of Attachment Behaviors with Family Pets in a Sample of Children with Autism Spectrum Disorder}}. {Int J Environ Res Public Health};2017 (Mar 03);14(3)
The unique needs of individuals with autism spectrum disorder (ASD) have implications for animal welfare. This nested pilot study examined the effects of a randomized trial of 10-week therapeutic horseback riding (THR) intervention versus a no-horse barn activity (BA) control group on children’s behaviors with family pets. Sixty-seven (THR n = 31; BA n = 36) participants with ASD (ages 6-16 years) with one or more family pet, were enrolled from a larger trial (n = 116) following their randomization to intervention groups, stratified by nonverbal intellectual ability. A consistent caregiver completed questionnaires about participants’ interactions with their household pets pre- and post-intervention. Caregivers of THR group participants reported significant improvements in participants’ caring actions with the family pet compared with the BA group (p = 0.013; effect size = 0.74). Engaging with horses during a standard THR intervention protocol may generalize to improving caring actions toward family pets in children and adolescents with ASD.
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23. Swanson MR, Shen MD, Wolff JJ, Boyd B, Clements M, Rehg J, Elison JT, Paterson S, Parish-Morris J, Chappell JC, Hazlett HC, Emerson RW, Botteron K, Pandey J, Schultz RT, Dager SR, Zwaigenbaum L, Estes AM, Piven J. {{Naturalistic Language Recordings Reveal « Hypervocal » Infants at High Familial Risk for Autism}}. {Child Dev};2017 (Mar 10)
Children’s early language environments are related to later development. Little is known about this association in siblings of children with autism spectrum disorder (ASD), who often experience language delays or have ASD. Fifty-nine 9-month-old infants at high or low familial risk for ASD contributed full-day in-home language recordings. High-risk infants produced more vocalizations than low-risk peers; conversational turns and adult words did not differ by group. Vocalization differences were driven by a subgroup of « hypervocal » infants. Despite more vocalizations overall, these infants engaged in less social babbling during a standardized clinic assessment, and they experienced fewer conversational turns relative to their rate of vocalizations. Two ways in which these individual and environmental differences may relate to subsequent development are discussed.
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24. Visser K, Greaves-Lord K, Tick NT, Verhulst FC, Maras A, van der Vegt EJ. {{A randomized controlled trial to examine the effects of the Tackling Teenage psychosexual training program for adolescents with autism spectrum disorder}}. {J Child Psychol Psychiatry};2017 (Mar 09)
BACKGROUND: Previous research underscores the importance of psychosexual guidance for adolescents with autism spectrum disorder (ASD). Such guidance is provided in the Tackling Teenage Training (TTT) program, in which adolescents with ASD receive psycho-education and practice communicative skills regarding topics related to puberty, sexuality, and intimate relationships. This randomized controlled trial investigated the effects of the TTT program on (a) cognitive outcomes (i.e. psychosexual knowledge, and insight in interpersonal boundaries) and (b) behavioral outcomes (i.e. skills needed for romantic relationships and problematic sexual behavior). METHODS: A total of 189 cognitively able adolescents with ASD, aged 12-18 years old, were randomized to an intervention condition (n = 95) or a waiting-list control condition (n = 94). We assessed outcomes using self-reported as well as parent-reported questionnaires at baseline (T1), posttreatment (T2; after 6 months), and follow-up (T3; after 12 months). RESULTS: Linear mixed model analyses showed significant treatment effects for psychosexual knowledge and adequate insight in boundaries, both posttreatment and at follow-up. All adolescents increased significantly over time in their social responsiveness and decreased their problematic sexual behavior, irrespectively of condition. The TTT program was most effective for younger adolescents with ASD; following the TTT program resulted in higher psychosexual knowledge, and higher social functioning for these adolescents. CONCLUSIONS: The results of this study indicate that the TTT program is effective as a psycho-educational program to provide adolescents with ASD with the knowledge and insight they need to prepare themselves for a healthy psychosexual development. Further research is needed to investigate how this increased knowledge and insight can subsequently ameliorate improvements in romantic skills and prevent the development of problematic sexual behavior and victimization.
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25. Wen Z, Cheng TL, Yin DZ, Sun SB, Wang Z, Yu SY, Zhang Y, Qiu Z, Du YS. {{Identification of the Genetic Cause for Childhood Disintegrative Disorder by Whole-Exome Sequencing}}. {Neurosci Bull};2017 (Apr);33(2):251-254.
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26. Zhang R, Zhang HF, Han JS, Han SP. {{Genes Related to Oxytocin and Arginine-Vasopressin Pathways: Associations with Autism Spectrum Disorders}}. {Neurosci Bull};2017 (Apr);33(2):238-246.
Autism spectrum disorder (ASD) is a highly heritable neurodevelopmental disorders characterized by impaired social interactions, communication deficits, and repetitive behavior. Although the mechanisms underlying its etiology and manifestations are poorly understood, several lines of evidence from rodent and human studies suggest involvement of the evolutionarily highly-conserved oxytocin (OXT) and arginine-vasopressin (AVP), as these neuropeptides modulate various aspects of mammalian social behavior. As far as we know, there is no comprehensive review of the roles of the OXT and AVP systems in the development of ASD from the genetic aspect. In this review, we summarize the current knowledge regarding associations between ASD and single-nucleotide variants of the human OXT-AVP pathway genes OXT, AVP, AVP receptor 1a (AVPR1a), OXT receptor (OXTR), the oxytocinase/vasopressinase (LNPEP), and ADP-ribosyl cyclase (CD38).
