Transcription Factor Activating Protein-2β (TFAP-2β) genotype and symptoms of attention deficit hyperactivity disorder in relation to symptoms of depression in two independent samples
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作者:
Nilsson, Kent W.
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Uppsala Univ, Vastmanland Cty Hosp, Clin Res Ctr, S-72189 Vasteras, SwedenUppsala Univ, Vastmanland Cty Hosp, Clin Res Ctr, S-72189 Vasteras, Sweden
Nilsson, Kent W.
[1
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Sonnby, Karin
[1
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Nordquist, Niklas
[2
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Comasco, Erika
[2
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Leppert, Jerzy
[1
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Oreland, Lars
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Uppsala Univ, Dept Neurosci, S-75124 Uppsala, SwedenUppsala Univ, Vastmanland Cty Hosp, Clin Res Ctr, S-72189 Vasteras, Sweden
Oreland, Lars
[2
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Sjoberg, Rickard L.
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Univ Hosp Umea, Dept Neurosurg, S-90185 Umea, SwedenUppsala Univ, Vastmanland Cty Hosp, Clin Res Ctr, S-72189 Vasteras, Sweden
Sjoberg, Rickard L.
[3
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机构:
[1] Uppsala Univ, Vastmanland Cty Hosp, Clin Res Ctr, S-72189 Vasteras, Sweden
[2] Uppsala Univ, Dept Neurosci, S-75124 Uppsala, Sweden
[3] Univ Hosp Umea, Dept Neurosurg, S-90185 Umea, Sweden
The Transcription Factor Activating Protein-2 beta (TFAP-2 beta) gene has been shown to influence monoaminergic neurotransmission, and several genes important for monoaminergic function have binding sites for TFAP-2 beta. Familial studies of attention deficit hyperactivity disorder (ADHD) suggest a hereditary-determined subtype of ADHD with comorbid depression. We examined a functional variation of the TFAP-2 beta gene in the context of co-occurring symptoms of ADHD and depression in two independent population-based samples of adolescents (Group A, n = 175 and Group B, n = 1,506) from Sweden. Results indicated 6.1 to 7.8 % of adolescents screened positively for ADHD and depression symptoms. Symptoms of depression were more common among girls who screened positively for ADHD and did not carry the nine-repeat allele of the TFAP-2 beta intron 1 Variable Number Tandem Repeat (VNTR) polymorphism. The presence of the nine-repeat variant of the TFAP-2 beta intron 1 VNTR appears to protect girls with ADHD symptoms from the co-expression of symptoms of depression.