scholarly journals Neurodevelopmental Trajectories and Clinical Profiles in a Sample of Children and Adolescents With Early- and Very-Early-Onset Schizophrenia

2021 ◽  
Vol 12 ◽  
Author(s):  
Maria Pontillo ◽  
Roberto Averna ◽  
Maria Cristina Tata ◽  
Fabrizia Chieppa ◽  
Maria Laura Pucciarini ◽  
...  
Keyword(s):  
Children And Adolescents ◽  
Neurodevelopmental Disorders ◽  
Early Onset ◽  
Social Role ◽  
Treatment Plan ◽  
Neurodevelopmental Disorder ◽  
Communication Disorders ◽  
Autism Spectrum ◽  
Early Onset Schizophrenia ◽  
Assessment And Treatment

Schizophrenia before the age of 18 years is usually divided into two categories. Early-onset schizophrenia (EOS) presents between the ages of 13 and 17 years, whereas very-early-onset schizophrenia (VEOS) presents at or before the age of 12 years. Previous studies have found that neurodevelopmental difficulties in social, motor, and linguistic domains are commonly observed in VEOS/EOS patients. Recent research has also shown a high prevalence of neurodevelopmental disorders (e.g., intellectual disability, communication disorders, autism spectrum disorder, neurodevelopmental motor disorders) in VEOS/EOS patients, indicating genetic overlap between these conditions. These findings lend support to the neurodevelopmental continuum model, which holds that childhood neurodevelopmental disorders and difficulties and psychiatric disorders (e.g., schizophrenia) fall on an etiological and neurodevelopmental continuum, and should not be considered discrete entities. Based on this literature, in this study we focused on the overlap between neurodevelopmental disorders and schizophrenia investigating, in a large sample (N = 230) of VEOS/EOS children and adolescents, the clinical differences, at the onset of psychosis, between VEOS/EOS with neurodevelopmental disorder or neurodevelopmental difficulties and VEOS/EOS with no diagnosed neurodevelopmental disorder or neurodevelopmental difficulties. The findings showed that, in children and adolescents with a neurodevelopmental disorder or neurodevelopmental difficulties, psychosis onset occurred at an earlier age, was associated with more severe functional impairment (e.g., global, social, role), and was characterized by positive symptoms (e.g., grandiose ideas, perceptual abnormalities, disorganized communication) and disorganized symptoms (e.g., odd behavior or appearance, bizarre thinking). Instead, in children and adolescents without a neurodevelopmental disorder or neurodevelopmental difficulties, psychosis onset was mainly characterized by negative symptomatology (e.g., social anhedonia, avolition, expression of emotion, experience of emotions and self, ideational richness). Given these differences, the presence of a neurodevelopmental disorder or neurodevelopmental difficulties should be carefully investigated and integrated early into the assessment and treatment plan for VEOS/EOS patients.

scholarly journals LSD1 enzyme inhibitor TAK-418 unlocks aberrant epigenetic machinery and improves autism symptoms in neurodevelopmental disorder models

2021 ◽  
Vol 7 (11) ◽  
pp. eaba1187
Author(s):  
Rina Baba ◽  
Satoru Matsuda ◽  
Yuuichi Arakawa ◽  
Ryuji Yamada ◽  
Noriko Suzuki ◽  
...  
Keyword(s):  
Gene Expression ◽  
Enzyme Activity ◽  
Neurodevelopmental Disorders ◽  
Neurodevelopmental Disorder ◽  
Specific Inhibitor ◽  
Autism Spectrum ◽  
Poly I:C ◽  
Control Of Gene Expression ◽  
Epigenetic Machinery ◽  
The Brain

Persistent epigenetic dysregulation may underlie the pathophysiology of neurodevelopmental disorders, such as autism spectrum disorder (ASD). Here, we show that the inhibition of lysine-specific demethylase 1 (LSD1) enzyme activity normalizes aberrant epigenetic control of gene expression in neurodevelopmental disorders. Maternal exposure to valproate or poly I:C caused sustained dysregulation of gene expression in the brain and ASD-like social and cognitive deficits after birth in rodents. Unexpectedly, a specific inhibitor of LSD1 enzyme activity, 5-((1R,2R)-2-((cyclopropylmethyl)amino)cyclopropyl)-N-(tetrahydro-2H-pyran-4-yl)thiophene-3-carboxamide hydrochloride (TAK-418), almost completely normalized the dysregulated gene expression in the brain and ameliorated some ASD-like behaviors in these models. The genes modulated by TAK-418 were almost completely different across the models and their ages. These results suggest that LSD1 enzyme activity may stabilize the aberrant epigenetic machinery in neurodevelopmental disorders, and the inhibition of LSD1 enzyme activity may be the master key to recover gene expression homeostasis. TAK-418 may benefit patients with neurodevelopmental disorders.

Neurodevelopmental disorders among Spanish school-age children: prevalence and sociodemographic correlates

2021 ◽  
pp. 1-11
Author(s):  
Rosa Bosch ◽  
Mireia Pagerols ◽  
Cristina Rivas ◽  
Laura Sixto ◽  
Laura Bricollé ◽  
...  
Keyword(s):  
Neurodevelopmental Disorders ◽  
Rating Scales ◽  
Communication Disorders ◽  
Autism Spectrum ◽  
Self Report ◽  
Motor Disorder ◽  
School Type ◽  
Final Population ◽  
Prevalence Estimates ◽  
Sociodemographic Correlates

Abstract Background Prevalence estimates of neurodevelopmental disorders (ND) are essential for treatment planning. However, epidemiological research has yielded highly variable rates across countries, including Spain. This study examined the prevalence and sociodemographic correlates of ND in a school sample of Spanish children and adolescents. Methods The Child Behaviour Checklist/Teacher's Report Form/Youth Self-Report and the Conners' Rating Scales were administered for screening purposes. Additionally, teachers provided information on reading and writing difficulties. Subjects who screened positive were interviewed for diagnostic confirmation according to the Diagnostic and Statistical Manual of Mental Disorders criteria. The final population comprised 6834 students aged 5–17. Multivariate analyses were performed to determine the influence of gender, age, educational stage, school type, socioeconomic status (SES), and ethnicity on the prevalence estimates. Results A total of 1249 (18.3%) subjects met criteria for at least one ND, although only 423 had already received a diagnosis. Specifically, the following prevalence rates were found: intellectual disabilities (ID), 0.63%; communication disorders, 1.05%; autism spectrum disorder (ASD), 0.70%; attention-deficit/hyperactivity disorder (ADHD), 9.92%; specific learning disorder (SLD), 10.0%; and motor disorders, 0.76%. Students of foreign origin and from low SES evidenced higher odds of having ID. Boys were more likely to display ASD or a motor disorder. Age, SES, and ethnicity were significant predictors for SLD, while communication disorders and ADHD were also associated with gender. Conclusions The prevalence of ND among Spanish students is consistent with international studies. However, a substantial proportion had never been previously diagnosed, which emphasise the need for early detection and intervention programmes.

Comparison of cognitive functions children with the autism spectrum disorders and schizophrenia

2017 ◽  
Vol 41 (S1) ◽  
pp. S457-S458
Author(s):  
N. Zvereva ◽  
N. Simashkova ◽  
A. Koval-Zaitsev
Keyword(s):  
Autism Spectrum Disorder ◽  
Visual Perception ◽  
Cognitive Functioning ◽  
Cognitive Functions ◽  
Early Onset ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Early Onset Schizophrenia ◽  
Competing Interest ◽  
Autistic Disorders

IntroductionAutism spectrum disorder and early onset schizophrenia have many similar symptoms, however, these are different disorders. It is important to identify the main similarities\differences in the structure of cognitive impairment to define further assistance these children correctly. We distinguished two options for cognitive defect (total and partial) in children with schizophrenia.AimsComparison of cognitive functions at children with autism spectrum disorder and early onset schizophrenia.ObjectivesTwo groups with autism spectrum disorder (ASD1 – 22 patients of MHRC mean age 8.9; ASD2 – 27 pupils of special school mean age 7,4). Two groups with early onset schizophrenia (F20.8 – 16 patients of MHRC mean age 10,2; F21 – 18 patients of MHRC mean age 10.0).MethodsBattery of pathopsychological tests for assessing cognitive functions (memory, attention, thinking), test figures of Leeper for visual perception. Z-scales were used for estimation of cognitive deficit or defect.ResultsPatients demonstrate variety of cognitive functioning. Normal cognitive functioning: ASD1* – 22%, F20.8 – 18%, F21* – 50% (* – P ≤ 0.05); partial cognitive defect: ASD1 – 27%, F20.8 – 18%, F21 – 22%; total cognitive defect: ASD1** – 50%, F20.8 – 64%, F21** – 27% (** – P ≤ 0.01). ASD1 and F20 were the worth in thinking. Children ASD1 and ASD2 demonstrate similar success in recognizing Leeper's figures.ConclusionsThere are some common features of cognitive development in children with severe forms of ASD and early onset schizophrenia, first of all in thinking.No significant differences obtained between severe – mild forms of autistic disorders in visual perception (ASD1 and ASD2).Disclosure of interestThe authors have not supplied their declaration of competing interest.

scholarly journals Attention-deficit/hyperactivity disorder and risk for psychiatric and neurodevelopmental disorders in siblings

2018 ◽  
Vol 49 (1) ◽  
pp. 84-91 ◽  
Author(s):  
Elina Jokiranta-Olkoniemi ◽  
Keely Cheslack-Postava ◽  
Petteri Joelsson ◽  
Auli Suominen ◽  
Alan S. Brown ◽  
...  
Keyword(s):  
Attention Deficit Hyperactivity Disorder ◽  
Attention Deficit ◽  
Neurodevelopmental Disorders ◽  
Neurodevelopmental Disorder ◽  
Population Based ◽  
Autism Spectrum ◽  
Schizophrenia Spectrum Disorders ◽  
Hyperactivity Disorder ◽  
Increased Risk ◽  
Spectrum Disorders

AbstractBackgroundProbands with attention-deficit/hyperactivity disorder (ADHD) are at increased risk for several psychiatric and neurodevelopmental disorders. The risk of these disorders among the siblings of probands has not been thoroughly assessed in a population-based cohort.MethodsEvery child born in Finland in 1991–2005 and diagnosed with ADHD in 1995–2011 were identified from national registers. Each case was matched with four controls on sex, place, and date of birth. The full siblings of the cases and controls were born in 1981–2007 and diagnosed in 1981–2013. In total, 7369 cases with 12 565 siblings and 23 181 controls with 42 753 siblings were included in the analyses conducted using generalized estimating equations.Results44.2% of the cases and 22.2% of the controls had at least one sibling diagnosed with any psychiatric or neurodevelopmental disorder (risk ratio, RR = 2.1; 95% CI 2.0–2.2). The strongest associations were demonstrated for childhood-onset disorders including ADHD (RR = 5.7; 95% CI 5.1–6.3), conduct and oppositional disorders (RR = 4.0; 95% CI 3.5–4.5), autism spectrum disorders (RR = 3.9; 95% CI 3.3–4.6), other emotional and social interaction disorders (RR = 2.7; 95% CI 2.4–3.1), learning and coordination disorders (RR = 2.6; 95% CI 2.4–2.8), and intellectual disability (RR = 2.4; 95% CI 2.0–2.8). Also, bipolar disorder, unipolar mood disorders, schizophrenia spectrum disorders, other neurotic and personality disorders, substance abuse disorders, and anxiety disorders occurred at increased frequency among the siblings of cases.ConclusionsThe results offer potential utility for early identification of neurodevelopmental and psychiatric disorders in at-risk siblings of ADHD probands and also argue for more studies on common etiologies.

Automatic Detection and Assessment of Autism Spectrum Disorder

2021 ◽  
pp. 396-425
Author(s):  
Thanga Aarthy M. ◽  
Menaka R. ◽  
Karthik R.
Keyword(s):  
Autism Spectrum Disorder ◽  
Early Detection ◽  
Early Diagnosis ◽  
Neurodevelopmental Disorders ◽  
Pathological Condition ◽  
Neurodevelopmental Disorder ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Attention Deficit Hyperactive Disorder ◽  
Clinical Methods

Children with neurodevelopmental disorders are increasing gradually every year. One in 100 children are diagnosed with brain function disorder. There are wide categories of disorder such as attention deficit hyperactive disorder, learning, autism spectrum disorder (ASD), etc. In this work, the focus is on ASD, its clinical methods, and analysis in various research works. ASD is a neurodevelopmental disorder which affects the intellectual functioning, social interaction (adaptive behavior), and has a specific obsessive interest. At present, there is no known cure for ASD, but the level of the pathological condition can be reduced when it is detected early. Early detection is tough and challenging till date. Many researches were carried out to ease the early detection for clinicians. Each method has its own merits and demerits. This chapter reviews and condenses various research works and their efficacy in analysis for the early diagnosis and improvement in children with autism.

scholarly journals Attention-deficit hyperactivity disorder shares copy number variant risk with schizophrenia and autism spectrum disorder

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Olafur O. Gudmundsson ◽  
G. Bragi Walters ◽  
Andres Ingason ◽  
Stefan Johansson ◽  
Tetyana Zayats ◽  
...  
Keyword(s):  
Attention Deficit Hyperactivity Disorder ◽  
Attention Deficit ◽  
Neurodevelopmental Disorders ◽  
Copy Number ◽  
Neurodevelopmental Disorder ◽  
Copy Number Variant ◽  
Pleiotropic Effect ◽  
Autism Spectrum ◽  
Copy Number Variations ◽  
Hyperactivity Disorder

Abstract Attention-deficit/hyperactivity disorder (ADHD) is a highly heritable common childhood-onset neurodevelopmental disorder. Some rare copy number variations (CNVs) affect multiple neurodevelopmental disorders such as intellectual disability, autism spectrum disorders (ASD), schizophrenia and ADHD. The aim of this study is to determine to what extent ADHD shares high risk CNV alleles with schizophrenia and ASD. We compiled 19 neuropsychiatric CNVs and test 14, with sufficient power, for association with ADHD in Icelandic and Norwegian samples. Eight associate with ADHD; deletions at 2p16.3 (NRXN1), 15q11.2, 15q13.3 (BP4 & BP4.5–BP5) and 22q11.21, and duplications at 1q21.1 distal, 16p11.2 proximal, 16p13.11 and 22q11.21. Six of the CNVs have not been associated with ADHD before. As a group, the 19 CNVs associate with ADHD (OR = 2.43, P = 1.6 × 10−21), even when comorbid ASD and schizophrenia are excluded from the sample. These results highlight the pleiotropic effect of the neuropsychiatric CNVs and add evidence for ADHD, ASD and schizophrenia being related neurodevelopmental disorders rather than distinct entities.

Disorders of Development

2014 ◽  
pp. 557-581
Author(s):  
V. Mark Durand
Keyword(s):  
Early Adulthood ◽  
Communication Disorders ◽  
Conduct Disorders ◽  
Autism Spectrum ◽  
Future Research ◽  
Hyperactivity Disorder ◽  
Specific Learning Disorder ◽  
Oppositional Defiant ◽  
Assessment And Treatment ◽  
Clinically Significant

Disorders of development include a range of disorders first evidenced in childhood. Although most disorders have their origins in childhood, a few fully express themselves before early adulthood. This chapter describes the nature, assessment, and treatment of the more common disorders that are revealed in a clinically significant way during a child’s developing years. The disorders of development affect a range of functioning from single skills deficits to more pervasive problems that negatively impact a child’s ability to function. Included is coverage of several disorders usually diagnosed first in infancy, childhood, or adolescence, including the neurodevelopmental disorders (e.g., attention-deficit/ hyperactivity disorder, autism spectrum disorder, communication disorders, intellectual disability, and specific learning disorder) and the disruptive, impulse control, and conduct disorders (e.g., oppositional defiant disorder, conduct disorder). Recommendations for future research on the potential for advancing knowledge regarding spectrums within some of these disorders as well as recommendations for treatment are outlined.

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