Abstract:
:Neurobiological and pharmacological research has suggested that dysregulation of the central noradrenergic systems might be involved in the pathophysiology of attention deficit hyperactivity disorder (ADHD). Previous studies have demonstrated that the norepinephrine transporter gene (SLC6A2) is associated with ADHD. The aims of this study were to examine the association of the SLC6A2 G1287A and -3081(A/T) polymorphisms with ADHD in Korean children and adolescents, and to determine the relationships of the genotypes of these two polymorphisms with continuous performance test results and the Junior Temperament and Character Inventory profiles of ADHD. In a case-control study, we assessed 186 ADHD probands and 150 normal controls; 109 trios were studied in a family-based association analysis. There were no significant differences in the genotype or allele frequencies of the SLC6A2 G1287A and -3081(A/T) polymorphisms between the ADHD and control groups (p > 0.05). In the transmission disequilibrium test analyses, there was no evidence for biased transmission of any of the alleles of the SLC6A2 G1287A and -3081(A/T) polymorphisms. In the haplotype analyses of these two polymorphisms, the global and individual chi(2) tests showed no significant associations between any of the haplotypes and ADHD. There were no significant differences with respect to the continuous performance test results and the Junior Temperament and Character Inventory profiles in the ADHD probands according to the genotypes of the SLC6A2 G1287A and -3081(A/T) polymorphisms. Our findings do not support SLC6A2 as a major genetic susceptibility factor in ADHD.
journal_name
Neuropsychobiologyjournal_title
Neuropsychobiologyauthors
Cho SC,Kim JW,Kim BN,Hwang JW,Park M,Kim SA,Cho DY,Yoo HJ,Chung US,Son JW,Park TWdoi
10.1159/000138916subject
Has Abstractpub_date
2008-01-01 00:00:00pages
131-8issue
3eissn
0302-282Xissn
1423-0224pii
000138916journal_volume
57pub_type
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