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Saghazadeh, Amene; Rezaei, Nima – Journal of Autism and Developmental Disorders, 2017
Brain-derived neurotrophic factor (BDNF) plays an important role in activity-dependent synaptic plasticity. Altered blood BDNF levels have been frequently identified in people with autism spectrum disorders (ASD). There are however wide discrepancies in the evidence. Therefore, we performed the present systematic review and meta-analysis aimed at…
Descriptors: Meta Analysis, Brain Hemisphere Functions, Patients, Control Groups
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Louise, Sandra; Fyfe, Sue; Bebbington, Ami; Bahi-Buisson, Nadia; Anderson, Alison; Pineda, Merce; Percy, Alan; Zeev, Bruria Ben; Wu, Xi Ru; Bao, Xinhua; MacLeod, Patrick; Armstrong, Judith; Leonard, Helen – Research in Autism Spectrum Disorders, 2009
Rett syndrome (RTT) is a rare genetic disorder within the autistic spectrum. This study compared socio-demographic, clinical and genetic characteristics of the international database, InterRett, and the population-based Australian Rett syndrome database (ARSD). It also explored the strengths and limitations of InterRett in comparison with other…
Descriptors: Genetic Disorders, Autism, Genetics, Databases
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David, M.; Dieterich, K.; Billette de Villemeur, A.; Jouk, P.-S.; Counillon, J.; Larroque, B.; Bloch, J.; Cans, C. – Journal of Intellectual Disability Research, 2014
Background: Studies conducted on mild intellectual disability (MID) in children are infrequent and the prevalence rates vary widely. This study aimed to estimate the prevalence of MID in children in a French county (Isère), to describe the clinical signs and associated comorbidities, and to specify the aetiologies of this disability. Methods: The…
Descriptors: Mild Mental Retardation, Incidence, Children, Foreign Countries
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Rossignol, Daniel A.; Frye, Richard E. – Developmental Medicine & Child Neurology, 2011
Aim: The aim of this study was to investigate melatonin-related findings in autism spectrum disorders (ASD), including autistic disorder, Asperger syndrome, Rett syndrome, and pervasive developmental disorders, not otherwise specified. Method: Comprehensive searches were conducted in the PubMed, Google Scholar, CINAHL, EMBASE, Scopus, and ERIC…
Descriptors: Autism, Effect Size, Correlation, Pervasive Developmental Disorders