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Yüksel Sümeyra Naralan; Özlem Dogan; Serenay Elgün; Didem Behice Öztop; Birim Günay Kiliç – Journal of Attention Disorders, 2024
Objective: In this study, to investigate the place of T cell-mediated immunity in the etiology of ADHD, for which we do not have enough information; we aimed to investigate the activity of DPP IV and ADA, which are T cell-related enzymes, and the relationship of these enzymes with ADHD symptoms in children with ADHD. Methods: Twenty-seven children…
Descriptors: Attention Deficit Hyperactivity Disorder, Children, Preadolescents, Etiology
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Emre Ertürk; Ümit Isik; Fevziye Burcu Sirin – Journal of Attention Disorders, 2024
Objective: In recent years, it has been emphasized that various growth factors that affect neurogenesis may lead to ADHD. In this study, we aimed to investigate the role of VEGF, IGF-1, and HIF-1[alpha] growth factors in the etiopathogenesis of ADHD. Method: Levels of VEGF, IGF-1, and HIF-1[alpha] were compared between 40 ADHD children and 40…
Descriptors: Attention Deficit Hyperactivity Disorder, Physiology, Children, Early Adolescents
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Kegel, Cornelia A. T.; Bus, Adriana G. – Journal of Child Psychology and Psychiatry, 2013
Background: The dopamine D4 receptor gene (DRD4) has been linked to attention deficit hyperactivity disorder (ADHD) and reading disorders. In this study, we examined whether diminished anticipatory dopamine cell firing--typical of the long variant of the DRD4 allele--is related to emergent and advanced alphabetic skills, and whether executive…
Descriptors: Genetics, Executive Function, Attention Deficit Hyperactivity Disorder, Correlation