Pubmed du 30/09/22

Pubmed du jour

1. Traditional Chinese medicine intervention for autism spectrum disorders: A protocol for systematic review and network meta-analysis: Retraction. Medicine (Baltimore);2022 (Sep 30);101(39):e29825.

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2. Becerra-Culqui TA, Getahun D, Chiu V, Sy LS, Tseng HF. Prenatal Influenza Vaccination or Influenza Infection and Autism Spectrum Disorder in Offspring. Clin Infect Dis;2022 (Sep 30);75(7):1140-1148.

BACKGROUND: As prenatal vaccinations continue to be given more frequently, it is important to assess long-term safety events. We investigated the association between prenatal influenza vaccination or infection and autism spectrum disorder (ASD) in offspring. METHODS: A retrospective cohort study of mother-child pairs with deliveries between 1 January 2011 and 31 December 2014 at Kaiser Permanente Southern California was performed. Children aged >1 year were followed through 31 December 2018. Maternal influenza vaccination or infection during pregnancy was obtained from electronic health records. ASD was defined by International Classification of Diseases, Ninth or Tenth Revisions, Clinical Modification, codes after age 1 year. Cox proportional hazard models estimated the crude and inverse probability of treatment weighted (IPTW) hazard ratios (HR) for the association between maternal influenza vaccination or infection and ASD. RESULTS: There were 84 739 mother-child pairs included in the final analytic sample. Of the 46 257 women vaccinated, 32.4% were vaccinated during the first trimester, 41.8% during the second trimester, and 25.8% during the third trimester. ASD was diagnosed in 1930 (2.3%) children. The IPTW analyses showed no association between prenatal influenza vaccination or infection and ASD in offspring (HR, 1.04; 95% confidence interval [CI], .95-1.13; HR, 1.12; 95% CI, .66-1.89, respectively). CONCLUSIONS: Prenatal influenza vaccination or infection was not associated with ASD risk in offspring. The findings support recommendations to vaccinate pregnant women to protect themselves and their infants, both of whom are vulnerable to severe morbidity following infection.

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3. Brinkman AH, Barry TD, Lindsey RA. The Relation of Parental Expressed Emotion, Parental Affiliate Stigma, and Typically-developing Sibling Internalizing Behavior in Families with a Child with ASD. J Autism Dev Disord;2022 (Sep 30)

Caregivers of children with autism spectrum disorder (ASD) experience greater stress, expressed emotion (EE), and affiliate stigma than caregivers of children without ASD. Siblings of children with ASD often experience greater negative functioning than siblings of individuals without ASD. The current study found significant interrelations among symptom severity and externalizing behavior in children with ASD; parental stress, affiliate stigma, and EE; and TD sibling internalizing behavior. In addition, certain subcomponents of affiliate stigma predicted unique variance in EE and TD sibling internalizing behavior. Findings may increase understanding of psychosocial functioning in families with children with ASD and allow clinicians to improve outcomes for all family members. Limitations of the study included self-report data, limited sample diversity, and a cross-sectional design.

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4. Dubreucq J, Coutelle R, Lajnef M, Godin O, Amestoy A, Atzori P, Baleyte JM, Bonnot O, Bouvard M, Coulon N, Da Fonseca D, Demily C, Delorme R, Fabrowski M, Givaudan M, Gollier-Briant F, Guenolé F, Humeau E, Leignier S, Lejuste F, Levy C, Rabot J, Schröder CM, Valette M, Leboyer M, Speranza M. Gender differences in psychosocial function and self-reported health status in late-diagnosed autistic adults: results from the FACE-ASD national cohort. Psychol Med;2022 (Sep 30):1-11.

BACKGROUND: While adult outcome in autism spectrum disorder (ASD) is generally measured using socially valued roles, it could also be understood in terms of aspects related to health status – an approach that could inform on potential gender differences. METHODS: We investigated gender differences in two aspects of outcome related to health-status, i.e. general functioning and self-perceived health status, and co-occurring health conditions in a large multi-center sample of autistic adults. Three hundred and eighty-three participants were consecutively recruited from the FondaMental Advanced Centers of Expertise for ASD cohort (a French network of seven expert centers) between 2013 and 2020. Evaluation included a medical interview, standardized scales for autism diagnosis, clinical and functional outcomes, self-perceived health status and verbal ability. Psychosocial function was measured using the Global Assessment of Functioning scale. RESULTS: While autistic women in this study were more likely than men to have socially valued roles, female gender was associated with poorer physical and mental health (e.g. a 7-fold risk for having three or more co-occurring physical health conditions) and a poorer self-perceived health status. Psychosocial function was negatively associated with depression and impairment in social communication. Half of the sample had multiple co-occurring health conditions but more than 70% reported that their visit at the Expert Center was their first contact with mental health services. CONCLUSIONS: To improve objective and subjective aspects of health outcome, gender differences and a wide range of co-occurring health conditions should be taken into account when designing healthcare provision for autistic adults.

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5. Flavell J, Franklin C, Nestor PJ. A Systematic Review of Fragile X-Associated Neuropsychiatric Disorders. J Neuropsychiatry Clin Neurosci;2022 (Sep 29):appineuropsych21110282.

OBJECTIVE: Fragile X premutation carriers are reported to have increased neuropsychiatric problems, and thus the term fragile X-associated neuropsychiatric disorders (FXAND) has been proposed. Unfortunately, published prevalence estimates of these phenomena are inconsistent. This systematic review clarified this issue by reviewing both fragile X premutation prevalence in patients with neurodevelopmental disorders and psychiatric disorder prevalence in premutation carriers without fragile X-associated tremor/ataxia syndrome (FXTAS). Average prevalence was derived from studies that used semistructured clinical interviews, diagnostic criteria, and validated rating scales. METHODS: Forty-six studies were reviewed. The rate of fragile X premutation in neurodevelopmental disorders was assessed from five studies. Probands with neurodevelopmental disorders were more likely than those in the general population to be premutation carriers. The rate of psychiatric disorders in premutation carriers was assessed from five studies for neurodevelopmental, 13 studies for mood, 12 studies for anxiety, and two studies for psychotic disorders. The phenotype and sex distribution among premutation carriers were similar to those with fragile X syndrome. RESULTS: Compared to control group and general population estimates, the most prevalent psychiatric disorders were neurodevelopmental disorders, anxiety disorders, and bipolar II disorder. Psychiatric disorders were also more common in males. Most studies relied only on past medical history to define the prevalence of psychiatric disorders, yielding variability in results. CONCLUSIONS: Future studies are needed to avoid bias by identifying cohorts from population-based sampling, to describe cohort demographic characteristics to elucidate differences in age and sex, and to prioritize the use of validated psychiatric assessment methods.

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6. Fry R, Li X, Evans TC, Esterman M, Tanaka J, DeGutis J. Investigating the Influence of Autism Spectrum Traits on Face Processing Mechanisms in Developmental Prosopagnosia. J Autism Dev Disord;2022 (Sep 29)

Autism traits are common exclusionary criteria in developmental prosopagnosia (DP) studies. We investigated whether autism traits produce qualitatively different face processing in 43 DPs with high vs. low autism quotient (AQ) scores. Compared to controls (n = 27), face memory and perception were similarly deficient in the high- and low-AQ DPs, with the high-AQ DP group additionally showing deficient face emotion recognition. Task-based fMRI revealed reduced occipito-temporal face selectivity in both groups, with high-AQ DPs additionally demonstrating decreased posterior superior temporal sulcus selectivity. Resting-state fMRI showed similar reduced face-selective network connectivity in both DP groups compared with controls. Together, this demonstrates that high- and low-AQ DP groups have very similar face processing deficits, with additional facial emotion deficits in high-AQ DPs.

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7. Hall SS, Rodriguez AB, Jo B, Pollard JS. Long-term follow-up of telehealth-enabled behavioral treatment for challenging behaviors in boys with fragile X syndrome. J Neurodev Disord;2022 (Sep 30);14(1):53.

BACKGROUND: A significant proportion of boys with fragile X syndrome (FXS), the most common known genetic cause of intellectual disability, exhibit challenging behaviors such as aggression and self-injury that can cause significant distress to families. Recent evidence suggests that coaching caregivers to implement functional communication training (FCT) with their child via telehealth can help to ameliorate these behaviors in FXS. In the present study, we followed families who had participated in our previous randomized controlled trial of FCT to evaluate the longer-term effects of FCT on challenging behaviors in this population. METHODS: In study 1, follow-up emails, phone calls, text messages, and letters were sent to caregivers of 48 boys with FXS who had completed our previous study conducted between 2016 and 2019. The main outcome measures administered at follow-up were the Aberrant Behavior Checklist-Community (ABC-C) and the Parenting Stress Index, 4th Edition (PSI-4). In study 2, families who had received FCT treatment but whose child exhibited challenging behaviors daily at follow-up received a 1-h parent training booster session to determine whether the intervention effect could be recovered. RESULTS: Sixteen (66.7%) of 24 families who had received FCT treatment and 18 (75.0%) of 24 families who had received treatment as usual were traced and consented between March and August 2021. The mean follow-up time was 3.1 years (range, 1.4 to 4.2 years). Longitudinal mixed effects analyses indicated that boys who had received FCT were more likely to show improvements on the irritability and lethargy/social withdrawal subscales of the ABC-C over the follow-up interval compared to boys who had continued with treatment as usual. Four of the six boys who had received the booster parent training session via telehealth were reported to exhibit fewer forms of challenging behavior at a 4-week follow-up. CONCLUSIONS: Empowering parents to implement behavior analytic treatments with their child in their own home can have durable effects on maintaining low levels of challenging behaviors in boys with FXS. These data further support the need to implement parent-mediated interventions for challenging behaviors in this population at an early age. TRIAL REGISTRATION: ClinicalTrials.gov, (NCT03510156) . Registered 27 April 2018.

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8. Koch E, Demontis D. Drug repurposing candidates to treat core symptoms in autism spectrum disorder. Front Pharmacol;2022;13:995439.

Autism spectrum disorder (ASD) is characterized by high heritability and clinical heterogeneity. The main core symptoms are social communication deficits. There are no medications approved for the treatment of these symptoms, and medications used to treat non-specific symptoms have serious side effects. To identify potential drugs for repurposing to effectively treat ASD core symptoms, we studied ASD risk genes within networks of protein-protein interactions of gene products. We first defined an ASD network from network-based analyses, and identified approved drugs known to interact with proteins within this network. Thereafter, we evaluated if these drugs can change ASD-associated gene expression perturbations in genes in the ASD network. This was done by analyses of drug-induced versus ASD-associated gene expression, where opposite gene expression perturbations in drug versus ASD indicate that the drug could counteract ASD-associated perturbations. Four drugs showing significant (p < 0.05) opposite gene expression perturbations in drug versus ASD were identified: Loperamide, bromocriptine, drospirenone, and progesterone. These drugs act on ASD-related biological systems, indicating that these drugs could effectively treat ASD core symptoms. Based on our bioinformatics analyses of ASD genetics, we shortlist potential drug repurposing candidates that warrant clinical translation to treat core symptoms in ASD.

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9. Korisky A, Goldstein A, Gordon I. The dual neural effects of oxytocin in autistic youth: results from a randomized trial. Sci Rep;2022 (Sep 29);12(1):16304.

Recent discoveries have highlighted the effects of oxytocin (OT) on social behavior and perception among autistic individuals. However, a gap persists in the literature regarding the potential effects of OT and the neural temporal dynamics due to OT administration. We explored the effect of OT on autistic individuals using magnetoencephalography (MEG), focusing on M100, M170, and M250, social perception-related components that tend to show atypical patterns in autistic individuals. Twenty-five autistic adolescents participated in this randomized, double-blind MEG study. Autistic individuals arrived at the lab twice and received an acute dose of intranasal OT or placebo in each session. During the scans, participants were asked to identify pictures of social and non-social stimuli. Additionally, 23 typically developing (TD) adolescents performed the same task in the MEG as a benchmark that allowed us to better characterize neural regions of interest and behavioral results for this age group in this task. A source-model beamformer analysis revealed that OT enhanced neural activity for social stimuli in frontal regions during M170. Additionally, in each of the preselected time windows, OT increased activation in the left hemisphere, regardless of the content of the presented stimuli. We suggest that OT increased the processing of social stimuli through two separate mechanisms. First, OT increased neural activity in a nonspecific manner, allowing increased allocation of attention toward the stimuli. Second, OT enhanced M170 activity in frontal regions only in response to social stimuli. These results reveal the temporal dynamics of the effects of OT on the early stages of social and non-social perception in autistic adolescents.Trial registration: This study was a part of a project registered as clinical trial October 27th, 2021. ClinicalTrials.gov Identifier: NCT05096676.

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10. Landes SD, Finan JM, Turk MA. COVID-19 mortality burden and comorbidity patterns among decedents with and without intellectual and developmental disability in the US. Disabil Health J;2022 (Sep 7):101376.

BACKGROUND: While there is ample evidence of increased COVID-19 mortality risk among people with intellectual and developmental disability (IDD), research has not documented whether this higher risk resulted in increased COVID-19 mortality burden in the US or whether comorbidity patterns among COVID-19 deaths are similar or distinct for people with IDD. OBJECTIVE: To determine the differences in COVID-19 mortality burden between decedents with and without IDD during the first year of the pandemic. METHODS: This study uses 2020 US death certificate data to compare COVID-19 mortality burden and comorbidity patterns among decedents with and without IDD. RESULTS: COVID-19 was the leading cause of death among decedents with IDD in 2020, compared with the 3rd leading cause among decedents without IDD. The proportion of deaths from COVID-19 was also higher for decedents with compared to without IDD. Comorbidities resulting from COVID-19 were similar among decedents with and without IDD, but there were some differences among reported pre-existing conditions, notably higher rates of hypothyroidism and seizures among decedents with IDD. CONCLUSION: The COVID-19 mortality burden was greater for people with than without IDD during the first year of the pandemic. The continued practice of postmortem diagnostic overshadowing prevents analyzing whether this difference continues through today. Action is needed by the Centers for Disease Control and Prevention to mitigate this data inequity. Out of an abundance of caution, medical providers should carefully monitor symptoms among COVID-19 patients with IDD diagnosed with hypothyroidism and/or seizures.

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11. Lin X, Zhou R, Liang D, Xia L, Zeng L, Chen X. The role of microbiota in autism spectrum disorder: A bibliometric analysis based on original articles. Front Psychiatry;2022;13:976827.

BACKGROUND: Gastrointestinal (GI) symptoms can be observed in autism spectrum disorder (ASD) children. It is suggested that the gut microbiota and its metabolites are associated, not only with GI symptoms, but also with behaviors of ASD. The aim of this study was to explore the development context, research hotspots and frontiers of gut microbiota and ASD from January 1, 1980 to April 1, 2022 by bibliometric analysis. MATERIALS AND METHODS: Publications of ASD and gut microbiota research from 1 January 1980 to 1 April 2022 were retrieved from the Web of Science Core Collection (WoSCC). Publications and citations trends were analyzed by Excel 2010. CiteSpace was used to analyze countries/regions, authors, institutes, references, and keywords and to visualize the knowledge map. RESULTS: A total of 1027 studies were retrieved, and 266 original articles were included after screening. The most published countries and institutes were the United States and King Saud University. Afaf El-Aansary published the most articles, while Finegold SM had the highest co-citations. Hotspots and emerging trends in this area may be indicated by co-cited references and keywords and their clusters, including « gut-brain axis, » « behavior, » « chain fatty acid, » « brain, » « feces, » « propionic acid, » « clostridium perfringens, » and « species clostridium innocuum. » CONCLUSION: The United States dominants the research in this field, which focuses on the alterations of gut microbiota composition and its metabolites, among which the roles of the genus Clostridium and metabolites of short-chain fatty acids, especially propionic acid, are priorities. Fecal microbiota transplantation (FMT) is a promising complementary therapy. In general, research in this area is sparse, but it still has great research prospects.

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12. Lisøy RS, Pfuhl G, Sunde HF, Biegler R. Sweet spot in music-Is predictability preferred among persons with psychotic-like experiences or autistic traits?. PLoS One;2022;17(9):e0275308.

People prefer music with an intermediate level of predictability; not so predictable as to be boring, yet not so unpredictable that it ceases to be music. This sweet spot for predictability varies due to differences in the perception of predictability. The symptoms of both psychosis and Autism Spectrum Disorder have been attributed to overestimation of uncertainty, which predicts a preference for predictable stimuli and environments. In a pre-registered study, we tested this prediction by investigating whether psychotic and autistic traits were associated with a higher preference for predictability in music. Participants from the general population were presented with twenty-nine pre-composed music excerpts, scored on their complexity by musical experts. A participant’s preferred level of predictability corresponded to the peak of the inverted U-shaped curve between music complexity and liking (i.e., a Wundt curve). We found that the sweet spot for predictability did indeed vary between individuals. Contrary to predictions, we did not find support for these variations being associated with autistic and psychotic traits. The findings are discussed in the context of the Wundt curve and the use of naturalistic stimuli. We also provide recommendations for further exploration.

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13. Mahajan R, Sagar R. Adequate Management of Autism Spectrum Disorder in Children in India. Indian J Pediatr;2022 (Sep 29)

Despite the significant burden of neurodevelopmental disorders such as autism spectrum disorder (ASD) in India, there are areas of unmet needs at every level of the health care system. This includes screening and recognition, reliable and valid tools to evaluate, and to adequately manage ASD. There are also gaps in education and training of medical professionals, paraprofessionals, special education teachers and the related services. Lack of public awareness and cultural factors contribute to delays in early recognition and interventions. A framework is suggested to address these unmet needs at various levels to improve the care of these children with ASD. These include a) a focus on education of medical professionals, paraprofessionals, and teachers; b) setting up infrastructure at community, regional, and statewide levels, with adequate funding; and c) use of audiovisual technology and collaboration with international expertise.

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14. McChesney N, Barth JL, Rumschlag JA, Tan J, Harrington AJ, Noble KV, McClaskey CM, Elvis P, Vaena SG, Romeo MJ, Harris KC, Cowan CW, Lang H. Peripheral Auditory Nerve Impairment in a Mouse Model of Syndromic Autism. J Neurosci;2022 (Sep 30)

Dysfunction of the peripheral auditory nerve (AN) contributes to dynamic changes throughout the central auditory system, resulting in abnormal auditory processing, including hypersensitivity. Altered sound sensitivity is frequently observed in autism spectrum disorder (ASD), suggesting that AN deficits and changes in auditory information processing may contribute to ASD-associated symptoms, including social communication deficits and hyperacusis. The MEF2C transcription factor is associated with risk for several neurodevelopmental disorders, and mutations or deletions of MEF2C produce a haploinsufficiency syndrome characterized by ASD, language, and cognitive deficits. A mouse model of this syndromic ASD (Mef2c-Het) recapitulates many of the MEF2C haploinsufficiency syndrome-linked behaviors, including communication deficits. We show here that Mef2c-Het mice of both sexes exhibit functional impairment of the peripheral AN and a modest reduction in hearing sensitivity. We find that MEF2C is expressed during development in multiple AN and cochlear cell types; and in Mef2c-Het mice, we observe multiple cellular and molecular alterations associated with the AN, including abnormal myelination, neuronal degeneration, neuronal mitochondria dysfunction, and increased macrophage activation and cochlear inflammation. These results reveal the importance of MEF2C function in inner ear development and function and the engagement of immune cells and other non-neuronal cells, which suggests that microglia/macrophages and other non-neuronal cells might contribute, directly or indirectly, to AN dysfunction and ASD-related phenotypes. Finally, our study establishes a comprehensive approach for characterizing AN function at the physiological, cellular, and molecular levels in mice, which can be applied to animal models with a wide range of human auditory processing impairments.Significance Statement:This is the first report of peripheral auditory nerve (AN) impairment in a mouse model of human MEF2C haploinsufficiency syndrome that has well-characterized ASD-related behaviors, including communication deficits, hyperactivity, repetitive behavior, and social deficits. We identify multiple underlying cellular, subcellular, and molecular abnormalities that may contribute to peripheral AN impairment. Our findings also highlight the important roles of immune cells (e.g., cochlear macrophages) and other non-neuronal elements (e.g., glial cells and cells in the stria vascularis) in auditory impairment in ASD. The methodological significance of the study is the establishment of a comprehensive approach for evaluating peripheral AN function and impact of peripheral AN deficits with minimal hearing loss.

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15. McLeod BD, Wood JJ, Cecilione Herbst J, Dunn D, Kendall PC, Storch EA, Cho AC, Rosenau KA. Treatment Fidelity and Outcome in CBT for Youth with Autism: The MEYA Fidelity Scale. J Clin Child Adolesc Psychol;2022 (Sep 29):1-16.

OBJECTIVE: Assessing treatment fidelity in effectiveness research is critical to interpreting study findings. This paper details the development and initial psychometric evaluation of the Modular Evidence-Based Practices for Youth with Autism Fidelity Scale (MEYA-FS) designed to support the assessment of cognitive-behavioral treatments for youth with autism in effectiveness research. METHOD: Recorded treatment sessions (N = 338) were randomly selected from 77 youth (M age = 9.65 years, SD = 1.87; 50.67% White; 85.33% male) who received the Schema, Emotion, and Behavior-Focused Therapy for Children (SEBASTIEN) (n = 51) or Coping Cat (n = 24) program. RESULTS: The MEYA-FS Adherence items displayed acceptable interrater reliability, but more than half of the MEYA-FS Competence items did not. The magnitude and pattern of correlations supported the score validity of the MEYA-FS Adherence and Competence items and subscales. However, some corresponding Adherence and Competence items displayed significant overlap. Scores on each Adherence subscale distinguished between the SEBASTIEN and Coping Cat programs, providing support for discriminant validity. Finally, higher Adherence and Competence subscales predicted significant improvements in youth clinical outcomes (adjustment problems in the school setting, social-communication difficulties, restrictive/repetitive behaviors, and externalizing problems), providing initial evidence for predictive validity. CONCLUSIONS: The psychometric properties of the MEYA-FS make it appropriate for supporting efforts to evaluate cognitive-behavioral interventions for youth with autism in effectiveness and implementation research.

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16. Mihaila I, Hsieh K, Acharya K. Correlates of Social Participation of Adults with Intellectual and Developmental Disabilities. J Intellect Disabil;2022 (Sep 29):17446295221130556.

Social participation has been linked to healthy aging, yet little is known about social participation during extended periods of time for adults with intellectual and developmental disabilities. The social participation of 777 adults with intellectual and developmental disabilities (aged 18-77 years), during a 4-year period, was examined. Sociodemographic, physical, and behavioral health-related correlates of engagement in social participation were investigated. Findings indicated that the majority of adults with intellectual and developmental disabilities engaged in at least a moderate level of social participation during the 4-years. Employment status, physical health, and Special Olympics participation were associated with a higher level of social participation. Findings have implications for supports and services seeking to promote social participation opportunities for adults with intellectual and developmental disabilities.

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17. Reuben KE, Self-Brown S, Vinoski Thomas E. PTSD in autistic adults: Correlates of meeting DSM-5 criteria and predictors of professional diagnosis. Psychol Trauma;2022 (Sep 29)

OBJECTIVE: Although many autistic adults show high posttraumatic stress, PTSD is underdiagnosed in this population. This study aims to examine correlates of autistic adults screening positive for PTSD (PTSD +) and predictors of a professional PTSD diagnosis (Diagnosis +) in the PTSD + subgroup. METHOD: Self-identified autistic adults (N = 677) completed an online survey on their demographic characteristics, mental health symptoms, and trauma history. T tests and chi-squares were used to compare subgroups, and logistic regression was used to predict diagnosis status. RESULTS: PTSD + participants were less likely to be employed or to identify as cisgender men, had more mental health symptoms and worse functional impairment, and had experienced a higher number of traumas and more interpersonal trauma. The same was true for Diagnosis + participants, who were also older and more likely to have a marginalized racial/ethnic identity. Among participants who were PTSD +, older age, being a woman or gender minority, being unemployed or on disability, having increased posttraumatic stress, having more co-occurring conditions, and having lower functional impairment predicted being Diagnosis +. The final model explained 35% of variance in diagnosis. CONCLUSION: PTSD is associated with significant impairment in autistic adults, but it often goes unrecognized. In particular, autistic cisgender men might be underdiagnosed with PTSD because of gendered stereotypes. High functional impairment may also increase barriers to obtaining an appropriate diagnosis. Future research should include participant treatment history as a potential factor. Clinicians should be aware of these potential signs of PTSD and diagnostic barriers when working with autistic clients. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

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18. Safi MF, Alshamsi M, Opoku MP. Parenting children with autism spectrum disorder in the United Arab Emirates: Exploring perceptions towards using the picture exchange communication system to enhance the development of children with autism spectrum disorder. BMC Psychol;2022 (Sep 30);10(1):229.

BACKGROUND: Autism spectrum disorder (ASD) is an interplay between biological, social and environmental factors that impact the development of individuals. However, core characteristics are social, communication and behaviour challenges that restrict children’s participation in society. Consequently, there are discussions regarding the need for society to develop interventions that are geared towards promoting the participation of children with ASD in societies. While the Picture Exchange Communication System (PECS) helps lessen the biological characteristics of children with ASD, its impact has rarely been explored in non-western societies, such as the United Arab Emirates (UAE). OBJECTIVES: The instant study’s purpose was to explore parents’ perceptions of the effectiveness of the PECS on the communicative, social and academic developments of children with ASD in UAE. METHOD: The Perception Towards Picture Exchange Communication Scale (PTPECS) was developed to collect data from the participants. The newly developed tool was piloted and validated before being implemented. The participants included 73 caregivers of children with ASD in the UAE. RESULTS: The following non-parametric tests were conducted: Mann-Whitney U test, Kruskal-Wallis test, and spearman rho. The results revealed that the parents were generally positive about employing the PECS to support the development of their children with ASD. There was also a positive association between using the PECS and improving communication, learning and social skills in children with ASD. CONCLUSION: It is imperative that educators and policymakers envisage parents as equal partners in providing rehabilitation services to children with ASD. Various implications, such as the need for continual engagement and empowering parents of children with ASD, are discussed.

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19. Zhang YH, Wang T, Li YF, Deng YN, Shen FG. Roles of the Notch signaling pathway and microglia in autism. Behav Brain Res;2022 (Sep 26);437:114131.

The Notch signaling pathway is mainly involved in the regulation of neural stem cell proliferation, survival and differentiation during the development of the central nervous system. As a neurodevelopmental disorder, autism is associated with an abnormal increase in the number of microglia in several brain regions. These findings suggest that the pathogenesis of autism may be related to the Notch signaling pathway and microglia. In this review, we discuss how Notch pathway activity leads to behavioral abnormalities such as learning and memory impairment by influencing neuronal biological activities. An increase in microglial protein synthesis and abnormal autophagy can affect synaptic development and lead to behavioral abnormalities, and all of these changes can lead to autism. Furthermore, the Notch signaling pathway regulates the activation and differentiation of microglia and promotes inflammatory responses, leading to the occurrence of autism. When excessive reactive oxygen species (ROS) secreted by microglia cannot be cleared by autophagy in a timely manner, Notch signaling pathway activity is affected, possibly further increasing susceptibility to autism. This review reveals the mechanism underlying the role of the Notch signaling pathway, microglia and their interaction in the pathogenesis of autism and provides a theoretical reference for targeted clinical therapies for autism.

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