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Polymorphism of DRD2 gene and ADHD

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ŠERÝ Omar DRTÍLKOVÁ Ivana THEINER Pavel PITELOVÁ Renáta ŠTAIF Radim ZNOJIL Vladimír LOCHMAN Jan

Rok publikování 2006
Druh Článek v odborném periodiku
Časopis / Zdroj Neuroendocrinology Letters
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
Obor Psychiatrie, sexuologie
Klíčová slova ADHD; dopamine; DRD2; polymorphism; association; gene
Popis Objectives: Attention deficit hyperactivity disorder (ADHD) is a prevalent childhood disorder. Evidence from the family and twin studies suggest that ADHD is familiar and highly heritable. Association studies are frequently used for the searching of markers responsible for genetic basis of ADHD. We investigated TaqI polymorphism of the dopamine receptor D2 (DRD2) in relationship with ADHD. The association between TaqI A polymorphism of DRD2 gene and ADHD has previously been published. Design: We used the association study to test the relationship between TaqI A polymorphism of DRD2 gene and ADHD on groups of ADHD boys and control boys. Setting: For DNA isolation, buccal tissue was used. PCR with restriction analysis of PCR products was used for genotyping. Results: We found statistically different genotypic and allelic frequencies (p < 0,008, p < 0,002, respectively) of DRD2 polymorphism between two studied groups of boys. Main findings: According to our results we suppose that polymorphism TaqI A of DRD2 gene is involved in the pathogenesis of childhood ADHD in male subjects. Allele A1 and genotype A1A1 in male subjects is associated with ADHD. Conclusions: Our study confirmed the relationship between TaqI A polymorphism of DRD2 gene and ADHD published previously.
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