ASD Symptoms Research Articles

Developmental and Psychiatric Conditions Among 5-7 Year Old Children with Non-persistent and Persistent Autism.

To describe the types and frequency of developmental and psychiatric conditions (DPCs) in early school-age children who were diagnosed with ASD as toddlers and to compare rates of DPCs in children whose ASD persists ("persistent ASD") versus those in whom it does not ("non-persistent ASD"). Children with a clinical ASD diagnosis at 12-36months old underwent a research assessment at 5-7years old. Research assessments included measures of ASD symptoms and cognitive and adaptive functioning. A research psychologist assigned an ASD diagnosis (yes or no) based on the child's current functioning. Information about DPCs was obtained from parent and/or research psychologist report. Intellectual disability was defined as cognitive standard score < 70. Of the 213 children diagnosed with ASD at initial clinical assessment, at the research assessment 134 (62.6%) had persistent ASD and 79 (37%) had non-persistent ASD. Overall, the most common DPCs were ADHD (n = 58; 27.2%); speech disorder (n = 46; 21.6%); and intellectual disability (n = 46; 21.6%). Of children with non-persistent ASD, 29.1% had ≥ 1 DPC, and 19% had ADHD. Children with persistent ASD were over 5 times more likely (OR = 5.72) to have an additional DPC, compared to those with non-persistent ASD. Children with non-persistent ASD may manifest several different DPCs, with an increased rate of ADHD compared to population norms. Children with persistent ASD have higher rates of DPCs than those with non-persistent ASD. Follow-up care for children diagnosed with ASD at a young age should include assessment for other DPCs.

Effects of Mozart–Orff parent–child music therapy among mothers and their preschool children with autism spectrum disorder: A mixed-methods randomised controlled trial

BackgroundAutism spectrum disorder (ASD) negatively impacts mental health, particularly in mothers of autistic children who experience heightened stress. Applied behaviour analysis (ABA) and music therapy are recognised interventions for improving ASD symptoms. However, the specific benefits of parent–child music therapy and ABA for autistic children and their mothers remain uncertain. This study evaluated the effects of parent–child music therapy on preschool autistic children and their mothers.MethodA randomised controlled trial was conducted with 100 mother–child pairs assigned to either the control group receiving ABA or the intervention group receiving both music therapy and ABA. Qualitative interviews were conducted post-intervention for 12 mothers.ResultsChildren in the intervention group exhibited lower scores for ASD symptoms than those in the control group. Moreover, mothers in the intervention group demonstrated reduced dysfunctional parent–child interaction, lower overall parental stress, significantly improved family functioning, and increased levels of hope compared with those in the control group. Mothers held positive views regarding music therapy.ConclusionsCombining ABA with parent–child music therapy can alleviate ASD symptoms in children and reduce stress in mothers. Improved parent–child interaction and enhanced family functioning further support the benefits of this combined approach. Parent–child music therapy, combined with ABA demonstrated positive outcomes for autistic children, including reduced ASD symptoms, improved parent–child interaction, decreased parental stress, enhanced family functioning, and increased hope. These findings highlight the potential of incorporating music therapy as a valuable component in the comprehensive treatment of ASD.Trial registrationThis study was registered in the Chinese Clinical Trial registry (05/07/2021, ChiCTR2100048261, https://www.chictr.org.cn/showproj.html?proj=128957). Ethical approval was obtained from the Research Ethics Committee of Fujian Medical University and the study hospital (Fujian Provincial Maternity and Child Health Hospital; 2017 − 105), and informed consent was obtained from all subjects and/or their legal guardian(s).

Disrupted Hippocampal-Prefrontal Networks in a Rat Model of Fragile X Syndrome: A Study Linking Neural Dynamics to Autism-Like Behavioral Impairments.

FMR-KO and control rats underwent a battery of behavioral tests assessing sociability, memory, and anxiety. Single-unit electrophysiology recordings were then conducted to measure patterns of neural activity in H-PFC circuit. Advanced mathematical models were used to characterize the patterns that were then compared between groups using generalized linear mixed models. FMR-KO rats demonstrated significant behavioral deficits in sociability, spatial learning, and anxiety, aligning with symptoms of ASD. At the neural level, these rats exhibited abnormal firing patterns in the H-PFC circuit that is critical for learning, memory, and social behavior. The neural networks in FMR-KO rats were also less densely connected and more fragmented, particularly in hippocampal-PFC correlated firing. These findings suggest that disruptions in neural network dynamics underlie the observed behavioral impairments in FMR-KO rats. FMR-KO significantly disrupts several characteristics of action potential firing in the H-PFC network, leading to deficits in social behavior, memory, and anxiety, as seen in FXS. This disruption is characterized by less organized and less resilient hippocampal-PFC networks. These findings suggest that therapeutic strategies aimed at normalizing neural dynamics, such as with brain stimulation, could potentially improve behavior and cognitive functions in autistic individuals. Fragile X Syndrome is associated with autism, cognitive challenges and anxietyThe loss of Fmr1 protein disrupts processes involved in building neural networksThe consequence is abnormal neural dynamics in hippocampal-prefrontal cortex networksNormalization of dynamics could improve outcomes in FXS and ASD.

Chronic administration of low dose aspirin alleviates ASD-like behaviors and activates AMPK in valproic acid-exposed rats

BackgroundAutism Spectrum Disorder (ASD) is a neurodevelopmental disorder distinguished by deficits in social communication and the presence of restricted/repetitive behaviors. There has been a global increase in the prevalence of ASD, yet the underlying causes of ASD remain inadequately understood, and there is currently no pharmacological intervention for the core symptoms of ASD. However, recent studies have suggested that aspirin may have the potential for use in the treatment of ASD. MethodPregnant rats were administered either VPA or normal saline on gestational day 12.5. The male pups were administered a low dose of aspirin (1 mg/kg) or a vehicle control daily from postnatal day 23 to day 52. ASD-like behaviors were assessed by social interaction, spontaneous grooming test, open field test and light-dark transitions. The activity of AMP-activated protein kinase (AMPK) was quantified by measuring the level of p-AMPK using an immunoblotting assay. ResultsChronic administration of low dose aspirin resulted in significant improvements in social approach deficits, a reduction in repetitive grooming, and the alleviation of anxiety-like behavior in ASD rats. Furthermore, aspirin administration also led to the activation of AMPK in the hippocampus of rats exposed to VPA. ConclusionsThese results raise the question of the need for further investigation of agents with mechanisms related to aspirin in ASD.

Chinese acupuncture: A potential treatment for autism rat model via improving synaptic function

PurposeAutistic symptom improvement can be observed in children treated with acupuncture, but the mechanism is still being explored. In the present study, we used scalp acupuncture to treat autism rat model, and then their improvement in the abnormal behaviors and specific mechanisms behind were revealed by detecting animal behaviors, analyzing the RNA sequencing of the prefrontal cortex (PFC), and observing the ultrastructure of PFC neurons under the transmission electron microscope. MethodsOn gestational day 12.5, Wistar rats were given valproic acid (VPA) by intraperitoneal injection, and their offspring were considered to be reliable rat models of autism. They were randomized to VPA or VPA-acupuncture group (n = 8). Offspring of Wistar pregnant rats that were simultaneously injected with saline were randomly selected as the wild-type group (WT). VPA_acupuncture group rats received acupuncture intervention at 23 days of age for 4 weeks, and the other two groups followed without intervention. After the intervention, all experimental rats underwent behavioral tests. Immediately afterward, they were euthanized by cervical dislocation, and their prefrontal cortex was isolated for RNA sequencing and transmission electron microscopy. ResultsThe main results are as follows: 1. Animal behavioural tests: VPA group rats showed more anxiety-like behaviour and repetitive, stereotyped behaviour than WT group rats. While VPA group rats showed less spatial exploration ability, activity level, social interaction, and social novelty preference than WT group rats. It was gratifying to observe that acupuncture indeed improved these abnormal behaviors of autism rat model. 2. RNA-sequencing: The three groups of rats differed in the expression and enrichment pathways of multiple genes related to synaptic function, neural signal transduction, immune-inflammatory responses and circadian rhythm regulation. Our experiments indicated that acupuncture can alleviate the major symptoms of ASD by improving these neurological abnormalities. 3. Under the transmission electron microscopy, several lysosomes and mitochondrial structural abnormalities were observed in the prefrontal neurons of VPA group rats, which were manifested as atrophy of the mitochondrial membrane, blurring or disappearance of the mitochondrial cristae, and even vacuolization. Moreover, the number of synapses and synaptic vesicles was relatively small. Conversely, the mitochondrial structure of rats in the WT group and VPA_acupuncture was normal, and the number of synapses and synaptic vesicles was relatively large. ConclusionAcupuncture effectively improved the abnormal behaviors of autism rat model and the ultrastructure of the PFC neurons, which might worked by improving their abnormal synaptic function, synaptic plasticity promoting neuronal signal transduction and regulating immune-inflammatory responses.

A Systematic Review of the Stigma Experienced by People with Autism Spectrum Disorder Associated with Intellectual Disabilities and by Their Family Caregivers.

The purpose of this paper was to explore the social stigma experienced by individuals diagnosed with ASD+ID, and to identify knowledge gaps for future studies by conducting a systematic review of peer-reviewed literature. In this systematic review, we included 12 studies exploring the experience of stigma among people with ASD+ID and/or their caregivers. Our aim was to better understand this experience, but also to explore the strategies used to cope with stigma in this population. Our results confirmed that people with ASD+ID and their caregivers experience at least low to moderate levels of stigma, and that this experience is modulated by internal and external factors (such as parental age, mindfulness traits, ASD symptoms…). In addition, our results show the impact of stigma on community integration, psychological well-being and help-seeking behaviour. The role of family, friends and professional support, as well as the formation of networks to share information, appear in our results to be protective factors against stigma. To our knowledge, this study is the first systematic review to examine the stigmatisation of people with ASD+ID and/or their caregivers. Further research is needed to understand the perspective of people with ASD+ID themselves and to explore other factors that modulate this experience, in particular gender and ethnicity.

Towards Refined Autism Screening: A Fuzzy Logic Approach with a Focus on Subtle Diagnostic Challenges

This study explores the creation and testing of a Fuzzy Inferencing System for automating preliminary referrals for autism diagnosis, utilizing membership functions aligned with the Autism Quotient 10-item questionnaire. Validated across three distinct datasets, the system demonstrated perfect accuracy in deterministic settings and an overall accuracy of 92.91% in a broad fuzzy dataset. The use of Fuzzy Logic reflects the complex and variable nature of autism diagnosis, suggesting its potential applicability in this field. While the system effectively categorized clear referral and non-referral scenarios, it faced challenges in accurately identifying cases requiring a second opinion. These results indicate the need for further refinement to enhance the efficiency and accuracy of preliminary autism screenings, pointing to future avenues for improving the system’s performance. The motivation behind this study is to address the diagnostic gap for high-functioning adults whose symptoms present in a more neurotypical manner. Many current deep learning approaches for diagnosing autism focus on quantitative datasets like fMRI and facial expressions, often overlooking behavioral traits. However, autism diagnosis still heavily relies on long histories and multi-stakeholder information from parents, teachers, doctors and behavioral experts. This research addresses the challenge of creating an automated system that can handle the nuances and variability inherent in ASD symptoms. The theoretical innovation lies in the novel application of Fuzzy Logic to interpret these subtle diagnostic indicators, providing a more systematic approach compared to traditional methods. By bridging the gap between subjective clinical evaluations and objective computational techniques, this study aims to enhance the preliminary screening process for ASD.

Bimodal distribution of intestinal Candida in children with autism and its potential link with worse ASD symptoms

Bimodal distribution of intestinal <i>Candida</i> in children with autism and its potential link with worse ASD symptoms

Exit interviews from two randomised placebo-controlled phase 3 studies with caregivers of young children with autism spectrum disorder

IntroductionAutism spectrum disorder (ASD) is characterised by difficulty with social communication and restricted, repetitive patterns of behaviour. This study aimed to improve understanding of the ASD patient experience with the treatment (bumetanide) regarding the changes in core symptoms and to assess changes considered as meaningful. To achieve this, qualitative interviews were conducted with caregivers of patients in two phase 3 clinical trials (NCT03715153; NCT03715166) of a novel ASD treatment.MethodsCaregivers were invited to participate in one interview after completion of the pivotal phase 3 study; for those of them who continued treatment after study completion, a second interview was held 3 months after trial completion. The interviews were conducted by qualitative researchers and followed a semi-structured interview guide. The interviews focused on patients’ ASD symptoms and their impact on their daily life before enrolment, and on any symptom changes patients experienced during the trial.ResultsOut of the 13 eligible patients’ caregivers, 11 were interviewed up to two times at clinical sites in the UK, Spain, and Italy. The caregivers reported impairments in a wide range of skills: deficits in communication and social interaction; restricted, repetitive patterns of behaviour, interests, or activities; and cognitive, emotional, and motor impairments. Compared to before the trial initiation, caregivers also reported improvements in the following domains: communication, interaction with others, cognition, aggression, emotions, repetitive movements, eating, and sleeping.ConclusionThe exit interviews provided a rich source of qualitative data, allowing a deeper understanding of caregivers’ and patients’ experience of the disease and allowing us to understand what constitutes a meaningful change. These data also helped identify important experiences that may inform the patient-reported outcome measurement strategy for future trials in ASD.

Gluten Free Casein Free Diet for Children with Autism Spectrum Disorder – A Review

Autism Spectrum Disorder is a group of neurodevelopmental conditions characterized by social and repetitive behaviour. As per WHO it is estimated that worldwide 1 in 160 children has ASD. Based on epidemiological studies conducted over the past 50 years, the prevalence of ASD appears to be increasing globally. Delayed speech, frequent repetition of set words and phrases, no social interactions, sensory changes etc. are the main symptoms of ASD. There is no known cure for ASD, but many different approaches are used to treat the symptoms of the disorders, for example, visual aids are used to improve communication, social stories interventions are used to teach appropriate social behaviour, and medication is used to ameliorate specific symptoms like aggression. Dietary intervention as a tool for maintaining and improving physical health and wellbeing for ASD is a widely researched and discussed topic. Studies have depicted that there is a link between diet, gut epithelial changes and altered immune response in the spectrum disorders exhibited by children with Autism. A gluten-free casein-free diet is also known as the GFCF diet. It is one of several alternative treatments for children with autism. When following this strict elimination diet, all foods containing and casein are removed from the child's daily food intake. Foods that contained proteins such as gluten and casein causes hypersensitivity to children with ASD. The children cannot digest these proteins properly. This result to increase the level of urinary small peptides. These peptides bind to opioid receptors and become biologically active, which results excess of opioid and leads to an increase of the behavioural difficulties seen in the children. Dietary interventions with the exclusion of gluten, casein or both is thought to have a positive effect on behavioural symptoms because of the elevated levels of peptides seen in the urinary analyses. Since the chemical structure of gluten and casein are very similar to each other, it is very likely that having a sensitivity to one of them means having a sensitivity to both, even though one could be worse than the other. This paper provide an overview of the gluten free casein free diet and its positive and negative results of Gluten free Casein free diet on the basis of reviewing case studies.

Surveillance and monitoring program of child neurodevelopment in population born during social confinement due to covid contigence: monteria-colombia experience

IntroductionThe American Academy of Pediatrics reports an incidence of 1 in every 54 children (Council on Children with Disabilities, 2021). The unique circumstances surrounding children born in 2020, who have experienced the COVID-19 pandemic since birth, present a distinct set of challenges for their neurodevelopmental well-being. The pandemic has led to reduced opportunities for learning and social interaction, masking mandates, decreased social support for research, and the potential misattribution of Autism Spectrum Disorders ASD symptoms to the effects of social isolation.ObjectivesThis study aims to develop such a program for children born during the COVID-19 pandemic (2020-2022).MethodsAll children born in March 2020 were included in the study. The initial assessment involved administering the ASQ-3 to evaluate their development across the specified domains. Diagnostic Evaluation: Among the population, 6% (4 children) displayed concerning signs on the ASQ-3, warranting further diagnostic evaluation by specialized health professionals for possible ASD.ResultsEarly Intervention and School Monitoring: Of the remaining 72% (46 children), who did not require diagnostic evaluation, intervention guidelines were provided, both within the school environment and at home. These children were reevaluated after a three-month period. Follow-up in the School Environment: Those children who underwent reevaluation were categorized into three groups: Nine children fell into the “gray” category on the ASQ-3 and were subsequently referred for diagnostic evaluation. Thirty-seven children progressed to the “white” category on the ASQ-3 after receiving intervention guidelines in both school and home settings. The findings of this research underscore the potential impact of the COVID-19 pandemic on the neurodevelopment of children born in 2020. 6% of the evaluated population were referred for diagnostic evaluation due to signs of ASD, suggesting a potential association between the pandemic and an increased risk of ASD within this cohort.72% of children who received intervention guidelines demonstrated significant improvements in their neurodevelopment, highlighting the critical role of early intervention and school-based monitoringConclusionsImplementing support strategies within educational settings was linked to positive developments in neurodevelopmental outcomes. Consequently, school-based neurodevelopmental monitoring, complemented by cohesive curricular guidelines, emerges as a beneficial approach for enhancing child development outcomes. The ASQ-3, as a structured instrument, proves invaluable in facilitating neurodevelopmental surveillance within educational settings, particularly in contexts with high demand and limited access to specialized care.Disclosure of InterestNone Declared

The biological modeling of autism spectrum disorders

IntroductionAutism Spectrum Disorders (ASD) are heterogeneous pathological conditions characterized by difficulties in establishing social contacts and the manifestation of repetitive behavior. An atypical trajectory of brain maturation, impaired neurogenesis, synaptogenesis, and an imbalance in the excitatory and inhibitory systems of the CNS form the morphofunctional basis of the ASDObjectivesscientific publicationsMethodsscientific analysisResultsThese pathological changes appear at different stages of brain maturation They are the result of multifactorial environmental influences. To understand the functioning of this complexly organized system in time and space, a three-dimensional model is needed. The closest in vitro model of the human brain from early embryonic stages to aging is brain organoids. Human brain organoids are self-organizing three-dimensional cell aggregates derived from pluripotent stem cells. Organoids summarize neurogenesis, gliogenesis, synaptogenesis, cell migration and cell differentiation, gyrification of the cerebral cortex, reflect the connections of brain regions. The use of a 3D brain model makes it possible to simulate diseases, reactions to drugs in cells obtained from patients. The use of telencephalon organoids in the ASD model revealed that neuronal migration deficiency, acceleration and disruption of cell cycle synchronization, aberrant cell proliferation, abundant synaptogenesis, temporary deviations in the development of the cortex, increased branching of neurons, unbalanced inhibitory differentiation of neurons, high activity of ion channels are the result of impaired activity FOXG1. FOXG1 is responsible for the overproduction of GABAergic neurons. The shift towards GABAergic neurons induced by FOXG1 is positively correlated with the severity of ASD symptoms and is seen as a precursor to the future of ASDConclusionsThus, ASD as a socially significant disease with a heterogeneous type of inheritance, multi-link pathogenesis, realized in different periods of ontogenesis and involving different brain loci, requires special attention of researchers for the personification of diagnosis and therapy. The hiPSCs can provide insight into the cellular mechanisms underlying ASD as a neuropsychiatric disorder, providing access to the development of platforms for in vitro drug screening and patient-tailored therapy.Disclosure of InterestNone Declared

Анализ четырехфакторной модели симптомов аутизма у детей 3–6 лет

&lt;p&gt;The work is devoted to the empirical analysis of age shifts within the framework of the factor model of autism for preschool children. In the 2020&amp;ndash;2022 studies, we obtained a factor model of autism and identified 4 vectors of autism &amp;mdash; typical subtypes of ASD in 3&amp;ndash;4 years old children. Among them are: 1) difficulties in establishing emotional contact, expressing one's emotions and decoding other people's emotions in the context of social interaction; 2) sensory disintegration; 3) impairments in verbal and nonverbal communication and social skills; 4) hyperactivity, including excessive movements, motor disinhibition and restless behavior. It should be emphasized that the first three vectors correspond to the core symptoms of ASD in accordance with the DSM-5. While the hyperactivity factor goes beyond the main symptoms of ASD. In this paper, a comparative analysis of the severity and stability of symptoms was carried out within the framework of a 4-factor model of autism for 3&amp;ndash;4 and 5&amp;ndash;6-year-old children with autism. Sensory and communication impairments have been found to decrease with age, however, emotional impairments and hyperactivity remain at a high level. The theoretical foundations of emotional disorders and hyperactivity in children with ASD are analyzed in detail. Brief practical recommendations are presented for effective early intervention in order to improve the potential trajectory of development of preschool children with ASD.&lt;/p&gt;

Age-related changes in autism spectrum disorder symptoms among children 3-9 years old

The study focuses on examining of age-related changes in ASD symptoms among children 3-10 years old. Sample consisted of 70 children, of which 21 were children without ASD, but with autistic traits. 881 children from the previous studies were included. The following symptom groups were investigated: 1) “Communication impairments”, 2) “Emotional disturbances”; 3) “Sensory disintegration”; “Disinhibition”; 5) Overall symptoms. Assumptions of this study: 1) there are age-related differences in ASD symptoms among children aged 3-10 years. Results found that overall symptoms statistically significant decreased for ASD children, as well as communication impairments, emotional disturbances, sensory disintegration. Additionally, for children without ASD decreasing is not registered.

Caregiver-child interaction as an effective tool for identifying autism spectrum disorder: evidence from EEG analysis

BackgroundAutism Spectrum Disorder (ASD) is a complex neurodevelopmental disorder that affects individuals across their lifespan. Early diagnosis and intervention are crucial for improving outcomes. However, current diagnostic methods are often time-consuming, and costly, making them inaccessible to many families. In the current study, we aim to test caregiver-child interaction as a potential tool for screening children with ASD in clinic.MethodsWe enrolled 85 preschool children (Mean age: 4.90 ± 0.65 years, 70.6% male), including ASD children with or without developmental delay (DD), and typical development (TD) children, along with their caregivers. ASD core symptoms were evaluated by Childhood Autism Rating Scale (CARS) and Autism Diagnostic Observation Schedule-Calibrated Severity Scores (ADOS-CSS). Behavioral indicators were derived from video encoding of caregiver-child interaction, including social involvement of children (SIC), interaction time (IT), response of children to social cues (RSC), time for caregiver initiated social interactions (GIS) and time for children initiated social interactions (CIS)). Power spectral density (PSD) values were calculated by EEG signals simultaneously recorded. Partial Pearson correlation analysis was used in both ASD groups to investigate the correlation among behavioral indicators scores and ASD symptom severity and PSD values. Receiver operating characteristic (ROC) analysis was used to describe the discrimination accuracy of behavioral indicators.ResultsCompared to TD group, both ASD groups demonstrated significant lower scores of SIC, IT, RSC, CIS (all p values < 0.05), and significant higher time for GIS (all p values < 0.01). SIC scores negatively correlated with CARS (p = 0.006) and ADOS-CSS (p = 0.023) in the ASD with DD group. Compared to TD group, PSD values elevated in ASD groups (all p values < 0.05), and was associated with SIC (theta band: p = 0.005; alpha band: p = 0.003) but not IQ levels. SIC was effective in identifying both ASD groups (sensitivity/specificity: ASD children with DD, 76.5%/66.7%; ASD children without DD, 82.6%/82.2%).ConclusionOur results verified the behavioral paradigm of caregiver-child interaction as an efficient tool for early ASD screening.

Qualitative analysis of mental health conversational agents messages about autism spectrum disorder: a call for action.

Conversational agents (CA's) have shown promise in increasing accessibility to mental health resources. This study aimed to identify common themes of messages sent to a mental health CA (Wysa) related to ASD by general users and users that identify as having ASD. This study utilized retrospective data. Two thematic analyses were conducted, one focusing on user messages including the keywords (e.g., ASD, autism, Asperger), and the second one with messages from users who self-identified as having ASD. For the sample of general users, the most frequent themes were "others having ASD," "ASD diagnosis," and "seeking help." For the users that self-identified as having ASD (n = 277), the most frequent themes were "ASD diagnosis or symptoms," "negative reaction from others," and "positive comments." There were 3,725 emotion words mentioned by users who self-identified as having ASD. The majority had negative valence (80.3%), and few were positive (14.8%) or ambivalent (4.9%). Users shared their experiences and emotions surrounding ASD with a mental health CA. Users asked about the ASD diagnosis, sought help, and reported negative reactions from others. CA's have the potential to become a source of support for those interested in ASD and/or identify as having ASD.

Comorbidity of autism spectrum and attention deficit/hyperactivity disorder symptoms and their associations with 1-year mental health outcomes in adolescents and young adults

Autism spectrum (ASD) and attention deficit/hyperactivity disorders (ADHD) share genetic, neurological, and behavioural features. However, related research in Asia is limited. We collected self-reported ASD and ADHD symptoms from 2186 Hong Kong adolescents and young adults aged 15–24 years, among whom, 1200 provided 1-year data on mental health-related outcomes. Comparative and network analyses were performed. Rating scale cutoff scores were used to divide participants into ASD, ADHD, comorbid, and control groups. The prevalence rates of ASD, ADHD, and comorbidities in Hong Kong were 13.3 %, 10.6 %, and 2.7 %, respectively. Compared with the control group, the comorbid group experienced more psychotic-like experiences (PLEs), the ASD group had poorer functioning, and the ADHD group had higher depression and anxiety symptoms and a lower quality of life after 1 year. The ability to switch attention, preference for routines and difficulty with change, and problems with organisation and planning were positively associated with depressive symptoms, forgetfulness and working memory issues with anxiety symptoms, and heightened sensory input and difficulties in sustaining attention and task completion with PLEs after 1 year. Our findings provide insight into support strategies to address the needs of young Asians to improving their well-being and long-term outcomes.

TRPC4 deletion elicits behavioral defects in sociability by dysregulating expression of microRNA-138-2

To investigate whether the defects in transient receptor potential canonical 4 (TRPC4), which is strongly expressed in the hippocampus, are implicated in ASD, we examined the social behaviors of mice in which Trpc4 was deleted (Trpc4-/-). Trpc4-/- mice displayed the core symptoms of ASD, namely, social disability and repetitive behaviors. In microarray analysis of the hippocampus, microRNA (miR)-138-2, the precursor of miR-138, was upregulated in Trpc4-/- mice. We also found that binding of Matrin3 (MATR3), a selective miR-138-2 binding nuclear protein, to miR-138-2 was prominently enhanced, resulting in the downregulation of miR-138 in Trpc4-/- mice. Some parameters of the social defects and repetitive behaviors in the Trpc4-/- mice were rescued by increased miR-138 levels following miR-138-2 infusion in the hippocampus. Together, these results suggest that Trpc4 regulates some signaling components that oppose the development of social behavioral deficits through miR-138 and provide a potential therapeutic strategy for ASD.

Preliminary analysis of a clinical trial of children with autism spectrum disorder treated with DHA-rich marine Schizochytrium sp. oil and multi-vitamin/mineral complex

BackgroundAutism spectrum disorder (ASD) is a syndrome characterized by alterations in social interaction and communication, frequently associated with stereotyped patterns, such as repetitive behavior. Inflammation and oxidative stress are frequently observed in patients, and natural products that control these aspects can be an alternative for ASD treatment.Method:In this prospective case series study, we administered in 2–12 years-old children (n = 12) with severe ASD a commercial extract of marine Schizochytrium sp. oil, composed by 200 mg DHA and 2 mg eicosapentaenoic acid, associated to a multi-vitamin/mineral complex, daily for 12 weeks. Patients were evaluated by Childhood Autism Rating Scale (CARS) and Adaptive Behavior Assessment System Third Edition (ABAS-3) scales before and after the treatment, and had the urine analyzed.Results:Values obtained from CARS, general adaptive composite and social domains from ABAS-3 were statistically different after treatment. Although not statistically significant, conceptual and practical domains from ABAS-3 had the score increased in several patients after the intervention. Among these domains, communication and visual contact improved in all patients, and vocabulary, interaction, feeding, and food selectivity were enhanced in some of them. The total antioxidant capacity in urine increased after treatment, as well as some metabolites, like amino acids, which were exclusive in all patient’s urine after the administration of the product.Conclusions:These preliminary data show that the continuous use of marine Schizochytrium sp. oil and multi-vitamin/mineral complex can help control characteristic symptoms of ASD in children.

Brief Report: Single and Repeat Screening with the Modified Checklist for Autism in Toddlers-Revised in Young Children at Higher Likelihood for Autism Spectrum Disorder.

To compare the utility of single versus repeated autism screening in a sample at higher likelihood (HL) for ASD, following both screen positives and all screen negatives to diagnostic outcome. Using a prospective infant sibling design, the current study followed 135 toddlers at HL for ASD and conducted diagnostic evaluations on the full sample at 18, 24, and 36 months. The psychometric properties of the M-CHAT-R using both concurrent and predictive diagnostic evaluations were compared in a group screened once (at 18 months only, n = 60) or twice (at both 18 and 24 months, n = 75). The study also examined consistency in reporting of ASD symptoms across the M-CHAT-R and a developmental concerns interview, comparing the HL group to a group with lower likelihood (LL) for ASD (n = 88). Sensitivity and specificity of the M-CHAT-R were high (75 - 95%), consistent with previous research. Positive predictive value (43 - 76%) was higher in this HL group than in previous community samples. Repeat screening improved sensitivity with little cost to specificity. At both 18 and 24 months, HL parents were more consistent in their reporting on the M-CHAT-R and a concerns interview than LL parents. The M-CHAT-R has strong psychometric properties when used with groups at HL for ASD, suggesting that scores over the screening cutoff of 3 should lead to prompt diagnostic evaluation referrals in children with older siblings on the spectrum.