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"Autism Spectrum Disorders"
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Autism spectrum disorder
\"Autism Spectrum Disorder is a term used to describe a group of developmental disorders that include autism, Asperger Syndrome, Pervasive Developmental Disorders, and others. Many people with these disorders struggle with social interaction and communication. This informative book provides insight into how people diagnosed with an autism spectrum disorder experience the world around them and promotes understanding and acceptance. A chapter for friends and family discusses how to handle autism spectrum disorder and its effects on siblings and relatives.\"-- Provided by publisher.
Book
Assessing the Causal Effects of Human Serum Metabolites on 5 Major Psychiatric Disorders
Psychiatric disorders are the leading cause of disability worldwide while the pathogenesis remains unclear. Genome-wide association studies (GWASs) have made great achievements in detecting disease-related genetic variants. However, functional information on the underlying biological processes is often lacking. Current reports propose the use of metabolic traits as functional intermediate phenotypes (the so-called genetically determined metabotypes or GDMs) to reveal the biological mechanisms of genetics in human diseases. Here we conducted a two-sample Mendelian randomization analysis that uses GDMs to assess the causal effects of 486 human serum metabolites on 5 major psychiatric disorders, which respectively were schizophrenia (SCZ), major depression (MDD), bipolar disorder (BIP), autism spectrum disorder (ASD), and attention-deficit/hyperactivity disorder (ADHD). Using genetic variants as proxies, our study has identified 137 metabolites linked to the risk of psychiatric disorders, including 2-methoxyacetaminophen sulfate, which affects SCZ (P = 1.7 × 10–5) and 1-docosahexaenoylglycerophosphocholine, which affects ADHD (P = 5.6 × 10–5). Fourteen significant metabolic pathways involved in the 5 psychiatric disorders assessed were also detected, such as glycine, serine, and threonine metabolism for SCZ (P = .0238), Aminoacyl-tRNA biosynthesis for both MDD (P = .0144) and ADHD (P = .0029). Our study provided novel insights into integrating metabolomics with genomics in order to understand the mechanisms underlying the pathogenesis of human diseases.
Journal Article
Microbiota Transfer Therapy alters gut ecosystem and improves gastrointestinal and autism symptoms: an open-label study
Background
Autism spectrum disorders (ASD) are complex neurobiological disorders that impair social interactions and communication and lead to restricted, repetitive, and stereotyped patterns of behavior, interests, and activities. The causes of these disorders remain poorly understood, but gut microbiota, the 10
13
bacteria in the human intestines, have been implicated because children with ASD often suffer gastrointestinal (GI) problems that correlate with ASD severity. Several previous studies have reported abnormal gut bacteria in children with ASD. The gut microbiome-ASD connection has been tested in a mouse model of ASD, where the microbiome was mechanistically linked to abnormal metabolites and behavior. Similarly, a study of children with ASD found that oral non-absorbable antibiotic treatment improved GI and ASD symptoms, albeit temporarily. Here, a small open-label clinical trial evaluated the impact of Microbiota Transfer Therapy (MTT) on gut microbiota composition and GI and ASD symptoms of 18 ASD-diagnosed children.
Results
MTT involved a 2-week antibiotic treatment, a bowel cleanse, and then an extended fecal microbiota transplant (FMT) using a high initial dose followed by daily and lower maintenance doses for 7–8 weeks. The Gastrointestinal Symptom Rating Scale revealed an approximately 80% reduction of GI symptoms at the end of treatment, including significant improvements in symptoms of constipation, diarrhea, indigestion, and abdominal pain. Improvements persisted 8 weeks after treatment. Similarly, clinical assessments showed that behavioral ASD symptoms improved significantly and remained improved 8 weeks after treatment ended. Bacterial and phagedeep sequencing analyses revealed successful partial engraftment of donor microbiota and beneficial changes in the gut environment. Specifically, overall bacterial diversity and the abundance of
Bifidobacterium
,
Prevotella
, and
Desulfovibrio
among other taxa increased following MTT, and these changes persisted after treatment stopped (followed for 8 weeks).
Conclusions
This exploratory, extended-duration treatment protocol thus appears to be a promising approach to alter the gut microbiome and virome and improve GI and behavioral symptoms of ASD. Improvements in GI symptoms, ASD symptoms, and the microbiome all persisted for at least 8 weeks after treatment ended, suggesting a long-term impact.
Trial registration
This trial was registered on the ClinicalTrials.gov, with the registration number
NCT02504554
Journal Article
The autists : women on the spectrum
An incisive and deeply candid account that explores autistic women in culture, myth, and society through the prism of the author's own diagnosis. Until the 1980s, autism was regarded as a condition found mostly in boys. Even in our time, autistic girls and women have largely remained invisible. When portrayed in popular culture, women on the spectrum often appear simply as copies of their male counterparts -- talented and socially awkward. Yet autistic women exist, and always have. They are varied in their interests and in their experiences. Autism may be relatively new as a term and a diagnosis, but not as a way of being and functioning in the world. It has always been part of the human condition. So who are these women, and what does it mean to see the world through their eyes? In The Autists, Clara Törnvall reclaims the language to describe autism and explores the autistic experience in arts and culture throughout history. From popular culture, films, and photography to literature, opera, and ballet, she dares to ask what it might mean to re-read these works through an autistic lens -- what we might discover if we allow perspectives beyond the neurotypical to take centre stage.
Book
The impact of sensory integration based sports training on motor and social skill development in children with autism spectrum disorder
Children with Autism Spectrum Disorder (ASD) often experience deficits in motor coordination, sensory processing, and social interaction, which hinder their participation in physical activities. While sensory integration-based interventions have shown promise, the specific impact of structured sports training incorporating sensory principles remains underexplored. This study evaluated the effects of a 12-week sensory integration-based sports training program on motor and social outcomes in children with ASD. Forty participants, aged 6–12, were randomly assigned to either an experimental group receiving sensory integration-based sports training or a control group engaged in standard physical activity. Motor coordination was assessed using the Bruininks-Oseretsky Test of Motor Proficiency (BOT-2), and social responsiveness was measured using the Social Responsiveness Scale (SRS-2). Weekly behavioral engagement was also recorded. Data were analyzed using paired t-tests and Cohen’s d for effect size. Participants in the intervention group demonstrated a significant 17.2-point increase in BOT-2 scores, reflecting improved motor coordination. SRS-2 scores decreased by 13.2 points, indicating enhanced social responsiveness. Participation rates in structured activities increased from 45 to 85% over the 12 weeks. Statistical analysis revealed a large effect size (Cohen’s d > 0.8) for both outcomes. Sensory integration-based sports training significantly improves motor and social functioning in children with ASD and offers a promising approach for therapeutic and educational rehabilitation programs.
Journal Article
Defining autism : a guide to brain, biology, and behavior
\"Drawing on the most up-to-date research on autism, this incisive book argues that while there are different causes and variations of autism, there is in fact one biological autism. By examining developmental and genetic factors and investigating lesser known autism-related syndromes, it clears away misconceptions surrounding this complex condition\"-- Back cover.
BOOK
Effect of intranasal oxytocin on the core social symptoms of autism spectrum disorder: a randomized clinical trial
Although small-scale studies have described the effects of oxytocin on social deficits in autism spectrum disorder (ASD), no large-scale study has been conducted. In this randomized, parallel-group, multicenter, placebo-controlled, double-blind trial in Japan, 106 ASD individuals (18–48 y.o.) were enrolled between Jan 2015 and March 2016. Participants were randomly assigned to a 6-week intranasal oxytocin (48IU/day, n = 53) or placebo (n = 53) group. One-hundred-three participants were analyzed. Since oxytocin reduced the primary endpoint, Autism Diagnostic Observation Schedule (ADOS) reciprocity, (from 8.5 to 7.7; P < .001) but placebo also reduced the score (8.3 to 7.2; P < .001), no between-group difference was found (effect size −0.08; 95% CI, −0.46 to 0.31; P = .69); however, plasma oxytocin was only elevated from baseline to endpoint in the oxytocin-group compared with the placebo-group (effect size −1.12; −1.53 to −0.70; P < .0001). Among the secondary endpoints, oxytocin reduced ADOS repetitive behavior (2.0 to 1.5; P < .0001) compared with placebo (2.0 to 1.8; P = .43) (effect size 0.44; 0.05 to 0.83; P = .026). In addition, the duration of gaze fixation on socially relevant regions, another secondary endpoint, was increased by oxytocin (41.2 to 52.3; P = .03) compared with placebo (45.7 to 40.4; P = .25) (effect size 0.55; 0.10 to 1.0; P = .018). No significant effects were observed for the other secondary endpoints. No significant difference in the prevalence of adverse events was observed between groups, although one participant experienced temporary gynecomastia during oxytocin administration. Based on the present findings, we cannot recommend continuous intranasal oxytocin treatment alone at the current dose and duration for treatment of the core social symptoms of high-functioning ASD in adult men, although this large-scale trial suggests oxytocin’s possibility to treat ASD repetitive behavior.
Journal Article
An exploration of concomitant psychiatric disorders in children with autism spectrum disorder
We explored patterns of concomitant psychiatric disorders in a large sample of treatment-seeking children and adolescents with autism spectrum disorder (ASD).
Participants were 658 children with ASD (age 3–17 years; mean = 7.2 years) in one of six federally-funded multisite randomized clinical trials (RCT) between 1999 and 2014. All children were referred for hyperactivity or irritability. Study designs varied, but all used the Child and Adolescent Symptom Inventory or Early Childhood Inventory to assess Attention Deficit Hyperactivity Disorder (ADHD), Oppositional-Defiant Disorder (ODD), Conduct Disorder (CD), Anxiety Disorders, and Mood Disorders. In addition, several measures in common were used to assess demographic and clinical characteristics.
Of the 658 children, 73% were Caucasian and 59% had an IQ >70. The rates of concomitant disorders across studies were: ADHD 81%, ODD 46%, CD 12%, any anxiety disorder 42%, and any mood disorder 8%. Two or more psychiatric disorders were identified in 66% of the sample. Of those who met criteria for ADHD, 50% also met criteria for ODD and 46% for any anxiety disorder. Associations between types of concomitant disorders and a number of demographic and clinical characteristics are presented.
In this well-characterized sample of treatment-seeking children with ASD, rates of concomitant psychiatric disorders were high and the presence of two or more co-occurring disorders was common. Findings highlight the importance of improving diagnostic practice in ASD and understanding possible mechanisms of comorbidity.
•We observed a high frequency of multiple concomitant DSM-defined disorders.•50% of children who met criteria for ADHD also met criteria for ODD.•46% of children who met criteria for ADHD also met criteria for an anxiety disorder.•Findings highlight the importance of improving diagnostic practices in ASD.
Journal Article