scholarly journals Suppressed prefrontal neuronal firing variability and impaired social representation in IRSp53-mutant mice

2021 ◽  
Author(s):  
Woohyun Kim ◽  
Young Woo Noh ◽  
Seungjoon Lee ◽  
Woochul Choi ◽  
Se-Bum Paik ◽  
...  
Keyword(s):  
Dynamic Range ◽  
Social Information ◽  
Autism Spectrum ◽  
Social Representation ◽  
Neuronal Firing ◽  
Mutant Mice ◽  
Social Deficits ◽  
Social Approach ◽  
Hyperactivity Disorder ◽  
Spectrum Disorders

Social deficit is a major feature of neuropsychiatric disorders, including autism spectrum disorders, schizophrenia, and attention-deficit/hyperactivity disorder, but its neural mechanisms remain unclear. Here, we examined neuronal discharge characteristics in the medial prefrontal cortex (mPFC) of IRSp53-mutant mice, which show social deficits, during social approach. IRSp53-mutant excitatory mPFC neurons displayed an increase in baseline neuronal firing and decreases in variability and dynamic range of firing rates and burst firing during social and non-social target approaches compared to wild-type controls. As a consequence, their firing activity was less differential between social and non-social targets. In addition, there was a decrease in the proportion of excitatory mPFC neurons encoding social information but not that of those encoding non-social information. These results suggest that insufficient neuronal activity dynamics may underlie impaired cortical encoding of social information and social behaviors in IRSp53-mutant mice.

Disorder-specific alterations of tactile sensitivity in neurodevelopmental disorders

2020 ◽  
Author(s):  
Jason He ◽  
Ericka Wodka ◽  
Mark Tommerdahl ◽  
Richard Edden ◽  
Mark Mikkelsen ◽  
...  
Keyword(s):  
Clinical Symptoms ◽  
Autism Spectrum ◽  
Typically Developing ◽  
Hyperactivity Disorder ◽  
The Core ◽  
Children With Asd ◽  
Tactile Detection ◽  
Spectrum Disorders ◽  
Sensory Processes ◽  
Core Symptoms

Alterations of tactile processing have long been identified in autism spectrum disorders (ASD) and attention-deficit/hyperactivity disorder (ADHD). However, the extent to which these alterations are disorder-specific, rather than disorder-general, and how they relate to the core symptoms of each disorder, remains unclear. We measured and compared tactile detection, discrimination and order judgment thresholds between a large sample of children with ASD, ADHD, ASD + ADHD combined and typically developing controls. The pattern of results suggested that while difficulties with tactile detection and order judgement were more common in children with ADHD, difficulties with tactile discrimination were more common in children with ASD. Strikingly, subsequent correlation analyses found that the disorder-specific alterations suggested by the group comparisons were also exclusively related to the core symptoms of each respective disorder. These results suggest that disorder-specific alterations of lower-level sensory processes exist and are specifically related to higher-level clinical symptoms of each disorder.

Autism Spectrum Disorders: A Research Review for School Counselors

2013 ◽  
Vol 16 (4) ◽  
pp. 2156759X1501604
Author(s):  
Richard W. Auger
Keyword(s):  
Autism Spectrum Disorders ◽  
School Counselors ◽  
Autism Spectrum ◽  
Research Literature ◽  
Research Review ◽  
Social Deficits ◽  
Increased Risk ◽  
The Social ◽  
Students With Autism ◽  
Spectrum Disorders

The number of students with autism spectrum disorders (ASD) has risen significantly in recent years (CDC, 2012), and students with ASD present unique challenges to schools and school counselors. This article presents a synthesis of recent research literature related to ASD for the purpose of providing school counselors with assistance in understanding and addressing the needs of students with ASD. Specific areas of focus include the prevalence, developmental course, and defining characteristics of ASD, and research on the effectiveness of interventions for students with ASD. Students with ASD are at increased risk for a range of problems, including social deficits and limitations, anxiety, aggression, peer victimization, and underachievement (Ashburner, Ziviani, & Rodger, 2010). Interventions to address the social deficits of students with ASD have shown promise but also have been found to lack results that are generalizable and that persist over time (Schreiber, 2011). This article provides specific recommendations for school counselors.

scholarly journals Socioemotional profiles of autism spectrum disorders, attention deficit hyperactivity disorder, and disinhibited and reactive attachment disorders: a symptom comparison and network approach

2021 ◽  
pp. 1-10
Author(s):  
Barry Coughlan ◽  
Matt Woolgar ◽  
Marinus H. van IJzendoorn ◽  
Robbie Duschinsky
Keyword(s):  
Attention Deficit Hyperactivity Disorder ◽  
Autism Spectrum Disorders ◽  
Attention Deficit ◽  
Autism Spectrum ◽  
Attachment Disorders ◽  
Hyperactivity Disorder ◽  
Children With Asd ◽  
Significant Difference ◽  
Reactive Attachment ◽  
Spectrum Disorders

Abstract Children with autism spectrum disorders (ASDs), attention deficit hyperactivity disorder (ADHD) and disinhibited and reactive attachment disorders (RAD/DAD) often experience socioemotional problems. Elucidating a clear picture of these profiles is essential. Strengths and Difficulties Questionnaires (SDQs) were analysed from cohort of children with ASD (n = 1430), ADHD (n = 1193), and RAD/DAD (n = 39). Kruskal–Wallis Tests and network analytic techniques were used to investigate symptom profiles. Children with ASD experienced more emotional problems, peer problems and fewer prosocial behaviours. Children with ADHD and RAD/DAD had higher levels of hyperactivity and conduct problems. Overall, ASD and ADHD networks were highly correlated (rs = 0.82), and we did not observe a statistically significant difference in terms of global Strength.

scholarly journals Human Plasma Glycome in Attention-Deficit Hyperactivity Disorder and Autism Spectrum Disorders

2010 ◽  
Vol 10 (1) ◽  
pp. M110.004200 ◽  
Author(s):  
Nela Pivac ◽  
Ana Knežević ◽  
Olga Gornik ◽  
Maja Pučić ◽  
Wilmar Igl ◽  
...  
Keyword(s):  
Attention Deficit Hyperactivity Disorder ◽  
Autism Spectrum Disorders ◽  
Human Plasma ◽  
Attention Deficit ◽  
Autism Spectrum ◽  
Hyperactivity Disorder ◽  
Spectrum Disorders

Gluten Intolerance and Neurodevelopmental Disorders: Is Nitric Oxide the Common Biomarker Linking These Conditions?

2016 ◽  
Vol 69 (1) ◽  
pp. 54-55 ◽  
Author(s):  
Keith Fluegge
Keyword(s):  
Oxidative Stress ◽  
Nitric Oxide ◽  
Neurodevelopmental Disorders ◽  
Autism Spectrum ◽  
Air Pollutant ◽  
Clinical Feature ◽  
Nutrient Deficiencies ◽  
Hyperactivity Disorder ◽  
Spectrum Disorders ◽  
The Relationship

Cruchet et al. attempt to tease out the myths and facts surrounding the growing popularity of certain dietary approaches in the management of neurodevelopmental disorders, like attention-deficit hyperactivity disorder (ADHD) and autism spectrum disorders (ASDs). The authors identify a particular exclusionary-type approach that seeks to eliminate dietary gluten. Although the relationship between celiac disease (CD) and ADHD/ASD is not well established, a repeated clinical feature noted in CD is the elevated levels of nitric oxide in serum and urine. Elevated oxidative stress has also been observed in neurodevelopmental conditions, and the author of this correspondence has been the first to propose that chronic, environmental exposure to the air pollutant, nitrous oxide may contribute to these oxidative stress profiles through neural cholinergic perturbation. Therefore, the purpose of this correspondence is to highlight this biochemical connection between these conditions so as to identify the clinical populations who may realize the greatest benefit of these dietary approaches, while minimizing any potential risk of nutrient deficiencies.

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