1. Bizzell E, Ross J, Rosenthal C, Dumont R, Schaaf R. {{Sensory Features as a Marker of Autism Spectrum Disorders}}. {J Autism Dev Disord};2019 (Mar 1)
We explored sensory features as distinguishing characteristics of Autism spectrum disorder (ASD). Four groups of males (n = 36): Six with 47, XYY syndrome and ASD (XYY+ASD), six with 47, XYY syndrome and no ASD (XYY-ASD), 12 with idiopathic ASD (ASD-I) and 12 typically developing (TYP). The short sensory profile (SSP) the sensory challenge protocol (SCP) were used to assess sensory features. SSP Total Score for the YY+ASD was significantly lower than the XYY-ASD (p = .002) and TYP (p < .001), but were not different from ASD-I (p = .714). The XYY+ASD group had significantly lower baseline heart rate variability during the SCP than TYP (p = .044). Findings provide preliminary support of sensory features as important in ASD diagnosis. Lien vers le texte intégral (Open Access ou abonnement)
2. Bujnowska AM, Rodriguez C, Garcia T, Areces D, Marsh NV. {{Parenting and Future Anxiety: The Impact of Having a Child with Developmental Disabilities}}. {Int J Environ Res Public Health};2019 (Feb 25);16(4)
This study examined differences in future anxiety (FA) among mothers and fathers of children with and without developmental disabilities (DD), and it also analyzed differences in FA within the group of parents of children with DD taking into consideration parent-related factors and child-related factors. A group of 167 parents of children with DD were compared to a group of 103 parents of children with typical development. The group with DD included children with autism spectrum disorders, sensory disorders, and intellectual disability. Parents completed the Future Anxiety Scale-FAS1. Mothers of children with DD had a higher general level of FA than fathers of children with and without DD. Mothers of children with DD reported higher anxiety about their future health and the meaning of their future life than fathers of children with DD. For parents of children with DD, those with lower education, male children, and older children reported higher FA. The group at risk of highest general FA are mothers of children with DD, especially those without a professional career. Similarly, parents of teenagers and/or sons with DD are at increased risk of FA.
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3. Chouinard B, Gallagher L, Kelly C. {{He said, she said: Autism spectrum diagnosis and gender differentially affect relationships between executive functions and social communication}}. {Autism};2019 (Mar 1):1362361318815639.
Autism spectrum disorder is characterized by difficulties with social communication, with a preponderance in males. Evidence supports a relationship between metacognitive executive functions (e.g. planning, working memory) and social communication in autism spectrum disorder, yet relationships with specific metacognitive executive functions and how gender alters the expression of these relationships require further study. We used multiple regression to examine relationships between informant-based measures of metacognitive executive function and social communication in intellectually able (IQ 85) female ( n = 111; mean age = 10.2 +/- 2.8; 31 autism spectrum disorder) and male youth ( n = 310; mean age = 10.5 +/- 1.9; 146 autism spectrum disorder) with and without autism spectrum disorder from the Autism Brain Imaging Data Exchange-II database. Executive function-social communication relationships were different in females and males with autism spectrum disorder. Relationships between the entire metacognitive index and social communication were stronger in males with autism spectrum disorder than without; this pattern was also observed for metacognitive sub-indices ‘monitor’ and ‘working memory’. These patterns were not observed in females. Relationships between executive function and social communication appear different for female and male youth with an autism spectrum disorder diagnosis. To better understand the nature of metacognitive contributions to social communication in autism spectrum disorder, future work should investigate the co-development of monitoring, working memory and social communication, while taking gender into account.
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4. Fattorusso A, Di Genova L, Dell’Isola GB, Mencaroni E, Esposito S. {{Autism Spectrum Disorders and the Gut Microbiota}}. {Nutrients};2019 (Feb 28);11(3)
In recent years, there has been an emerging interest in the possible role of the gut microbiota as a co-factor in the development of autism spectrum disorders (ASDs), as many studies have highlighted the bidirectional communication between the gut and brain (the so-called « gut-brain axis »). Accumulating evidence has shown a link between alterations in the composition of the gut microbiota and both gastrointestinal and neurobehavioural symptoms in children with ASD. The aim of this narrative review was to analyse the current knowledge about dysbiosis and gastrointestinal (GI) disorders in ASD and assess the current evidence for the role of probiotics and other non-pharmacological approaches in the treatment of children with ASD. Analysis of the literature showed that gut dysbiosis in ASD has been widely demonstrated; however, there is no single distinctive profile of the composition of the microbiota in people with ASD. Gut dysbiosis could contribute to the low-grade systemic inflammatory state reported in patients with GI comorbidities. The administration of probiotics (mostly a mixture of Bifidobacteria, Streptococci and Lactobacilli) is the most promising treatment for neurobehavioural symptoms and bowel dysfunction, but clinical trials are still limited and heterogeneous. Well-designed, randomized, placebo-controlled clinical trials are required to validate the effectiveness of probiotics in the treatment of ASD and to identify the appropriate strains, dose, and timing of treatment.
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5. Han GT, Tomarken AJ, Gotham KO. {{Social and nonsocial reward moderate the relation between autism symptoms and loneliness in adults with ASD, depression, and controls}}. {Autism Res};2019 (Mar 2)
Individuals with autism spectrum disorder (ASD) report high levels of co-occurring mood disorders. Previous work suggests that people with ASD also experience aberrant responses to social reward compared to typically developing (TD) peers. In the TD population, aberrant reward processing has been linked to anhedonia (i.e., loss of pleasure), which is a hallmark feature of depression. This study examined the interplay between self-reported pleasure from social and nonsocial rewards, autism symptom severity, loneliness, and depressive symptoms across adults with autism spectrum disorder (ASD; N = 49), TD currently depressed adults (TD-dep; N = 30), and TD never depressed controls (TD-con; N = 28). The ASD cohort reported levels of social and nonsocial anhedonia that were greater than TD-con but not significantly different from TD-dep. Across cohorts, both social and nonsocial hedonic capacity moderated the relationship between autism symptoms and loneliness: individuals with low capacity for pleasure experienced elevated loneliness regardless of autism symptom severity, while those with intact capacity for pleasure (i.e., less anhedonia) experienced greater loneliness as a function of increased autism symptoms. Loneliness was the strongest predictor of depressive symptoms across clinical cohorts. Our findings suggest a putative pathway from trait-like anhedonia in ASD to depression via elevated loneliness and indicate that variability in hedonic capacity within the autism spectrum may differentially confer risk for depression in adults with ASD. Results underscore potential mental health benefits of social skills interventions and community inclusion programs for adults with ASD. Autism Res 2019. (c) 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: The relationship between autism symptoms and loneliness depended on one’s ability to experience both social and nonsocial pleasure. Adults who experienced less pleasure reported high levels of loneliness that did not depend autism severity, while adults with high capacity for pleasure were especially lonely if they also had many autism symptoms. Loneliness was the strongest predictor of depressive symptoms, compared to capacity for social and nonsocial pleasure and autism symptoms.
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6. Mandic-Maravic V, Coric V, Mitkovic-Voncina M, Djordjevic M, Savic-Radojevic A, Ercegovac M, Matic M, Simic T, Lecic-Tosevski D, Toskovic O, Pekmezovic T, Pljesa-Ercegovac M, Pejovic-Milovancevic M. {{Interaction of glutathione S-transferase polymorphisms and tobacco smoking during pregnancy in susceptibility to autism spectrum disorders}}. {Sci Rep};2019 (Mar 1);9(1):3206.
Autism spectrum disorders (ASD) are a group of complex psychiatric disorders, with a proposed gene-environment interaction in their etiology. One mechanism that could explain both the genetic and environmental component is oxidative stress. The aim of our study was to investigate the potential role of common polymorphisms in genes for glutathione transferase A1, M1, T1 and P1 in susceptibility to ASD. We also aimed to explore the possible oxidative stress – specific gene-environment interaction, regarding GST polymorphisms, maternal smoking tobacco during pregnancy (TSDP) and the risk of ASD. This case-control study included 113 children with ASD and 114 age and sex-matched controls. The diagnosis was made based on ICD-10 criteria and verified by Autism Diagnostic Interview – Revised (ADI-R). We investigated GSTA1, GSTM1, GSTP1 and GSTT1 genotypes and explored their individual and combined effects in individuals with ASD. Individual effect of GST genotypes was shown for GSTM1 active genotype decreasing the risk of ASD (OR = 0.554, 95%CI: 0.313-0.983, p = 0.044), and for GSTA1 CC genotype, increasing susceptibility to ASD (OR = 4.132, 95%CI: 1.219-14.012, p = 0.023); the significance was lost when genotype-genotype interactions were added into the logistic regression model. The combination of GSTM1 active and GSTT1 active genotype decreased the risk of ASD (OR = 0.126, 95%CI: 0.029-0.547, p = 0.006), as well as combination of GSTT1 active and GSTP1 llelle (OR = 0.170, 95%CI: 0.029-0.992, p = 0.049). Increased risk of ASD was observed if combination of GSTM1 active and GSTP1 llelle was present (OR = 11.088, 95%CI: 1.745-70.456, p = 0.011). The effect of TSDP was not significant for the risk of ASD, neither individually, nor in interaction with specific GST genotypes. Specific combination of GST genotypes might be associated with susceptibility to ASD, while it appears that maternal smoking during pregnancy does not increase the risk of ASD.
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7. Wehman P, Schall C, McDonough J, Sima A, Brooke A, Ham W, Whittenburg H, Brooke V, Avellone L, Riehle E. {{Competitive Employment for Transition-Aged Youth with Significant Impact from Autism: A Multi-site Randomized Clinical Trial}}. {J Autism Dev Disord};2019 (Mar 1)
This study reports the results of a multi-site, parallel block randomized clinical trial to expand the previous findings regarding the implementation of Project SEARCH plus ASD Supports (PS + ASD) on employment outcomes upon graduation from high school. Participants were 156 individuals with significant impact from ASD between the ages of 18-21. There was a significant difference between treatment and control groups with 73.4% of the treatment group acquiring competitive employment at or above minimum wage by 1-year after graduation compared to 17% of the control group for whom data was provided. At 1-year, employed treatment group participants worked an average of 21.2 h per week (SD = 9) for a mean hourly wage of $9.61 per hour (SD = $1.55).Clinical Trial Registration: clinicaltrials.gov Identifier: NCT03560453.
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8. Wheeler AC, Wylie A, Raspa M, Villagomez A, Miller K, Edwards A, DeRamus M, Appelbaum PS, Bailey DB, Jr. {{Decisional Capacity for Informed Consent in Males and Females with Fragile X Syndrome}}. {J Autism Dev Disord};2019 (Mar 1)
Although informed consent is critical for all research, there is increased ethical responsibility as individuals with intellectual or developmental disabilities (IDD) become the focus of more clinical trials. This study examined decisional capacity for informed consent to clinical trials in individuals with fragile X syndrome (FXS). Participants were 152 adolescents and adults (80 males, 72 females) with FXS who completed a measure of decisional capacity and a comprehensive battery of neurocognitive and psychiatric measures. Females outperformed males on all aspects of decisional capacity. The ability to understand aspects of the clinical trial had the strongest association with the ability to appreciate and reason about the decision. Scaffolding improved understanding, suggesting researchers can take steps to improve decisional capacity and the informed consent process.
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9. Zakirova Engstrand R, Roll-Pettersson L, Westling Allodi M, Hirvikoski T. {{Needs of Grandparents of Preschool-Aged Children with ASD in Sweden}}. {J Autism Dev Disord};2019 (Mar 1)
Little is known about needs of grandparents of young children with autism in family and community settings. This study investigated perceived needs of grandparents of preschool-aged children diagnosed with ASD in the cultural context of Sweden. Participants were 120 grandparents of children enrolled into autism intervention programs provided by the public disability services in Stockholm. The Grandparents’ Needs Survey and the SDQ Impact supplement were used to collect data. Grandparents expressed most needs in topic areas of information and childcare. No significant relations were found between grandparents’ demographics and perceptions of needs; grandparents’ needs were predicted by their perceived burden. The findings provide insight into understanding of grandparents’ needs essential for planning and provision of quality family-centered early intervention services.
