Dergi Ara >>
Yıl:2004; Cilt: 12; Sayı: Ek 2>> Özet
Psikiyatri Psikoloji Psikofarmakoloji (3P) Dergisi; 2004;12(Ek 2):89-94
Dikkat eksikliği hiperaktivite bozukluğunun genetiği
C Tuğlu
Trakya Üniversitesi Tıp Fakültesi Psikiyatri AD, Edirne
Dikkat Eksikliği Hiperaktivite Bozukluğu (DEHB) okul çağı çocuklarında % 3-10 arasında görülen, kalıtsal bir bozukluktur. DEHB’nin biyolojik temeli iyi bilinmese de aile, ikiz ve evlat edinme çalışmaları güçlü genetik temele işaret etmektedir. DEHB ile ilişkili olarak özellikle iki aday dopamin geni vurgulanmaktadır: Dopamin transporter (DAT) ve D4 dopamin reseptör (DRD4) genleri. Buna ek olarak en azından 20 aday gen daha tanımlanmıştır. Bir gen tarama projesinde bağlantıya işaret eden LOD skorları ile birlikte altı kromozom belirlenmiştir. Sonuç olarak bu makalede genetik ve kalıtsallık ile ilgili temel bulgular ve geleceğe ilişkin öngörüler gözden geçirilmiştir.
Genes and attention- deficit hyperactivity disorder
Attention-deficit hyperactivity disorder (ADHD) is a heritable condition of childhood, affecting 3–10 % of school-age children. Although the biological basis of ADHD is unknown, family, twin and adoption studies have documented a strong genetic basis for ADHD. Two candidate dopamine genes have been reported to be associated with ADHD: Dopamine transporter (DAT) gene and D4 dopamine receptor (DRD4) gene. In addition, there are at least 20 candidate genes. A genome-wide scan has identified six cromosomal loci with LOD scores suggestive of linkage. Finally, the current article reviews main findings in the field, and outlines future directions.

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