Association study of CREB1 and childhood-onset mood disorders

被引:26
作者
Burcescu, I
Wigg, K
King, N
Vetró, A
Kiss, E
Katay, L
Kennedy, JL
Kovacs, M
Barr, CL
机构
[1] Univ Toronto, Toronto Western Res Inst, Univ Hlth Network, Toronto, ON, Canada
[2] Ctr Addict & Mental Hlth, Neurogenet Sect, Toronto, ON, Canada
[3] Univ Szeged, Dept Child & Adolescent Psychiat, Fac Med, Szeged, Hungary
[4] Univ Pittsburgh, Sch Med, Pittsburgh, PA USA
[5] Hosp Sick Children, Toronto, ON M5G 1X8, Canada
关键词
CREB1; depression; genetics; mood disorders; gene;
D O I
10.1002/ajmg.b.30201
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
Several lines of evidence suggest that the cellular pathways involved in synaptic plasticity contribute to the risk of depression. These findings include the evidence that chronic antidepressant treatment upregulates the cAMP signal transduction cascade resulting in increased expression and function of the cAMP responsive element binding protein (CREB), a transcription factor that increases the expression of key growth factors involved in synaptogenesis and neurogenesis. Recently, linkage to CREB1 was reported for early-onset depression in families recruited from the Pittsburgh area. This finding was significant only in female sibling pairs from those families. Two specific DNA variants, -656G/A and a C insertion/deletion in intron 8, were identified in CREB1 that co-segregated with depression in two of the families. We sought to investigate the relationship of CREB1 to childhood-onset mood disorders (COMD) using a sample of 195 nuclear families (225 affected children) collected in Hungary. We genotyped the two CREB1 DNA variants previously identified as linked to depression as well as three additional polymorphisms spanning the gene. In addition, we genotyped the -656G/A DNA change and the intron 8 polymorphism in a sample of 112 probands with mood disorders collected in the Pittsburgh area and matched controls, and examined the distribution of alleles. The -656A allele was not observed in our samples and there was no evidence for association of the intron 8 polymorphism in either the sample from Pittsburgh (chi(2) = 0.061, 1 d.f., P = 0.803) or Hungary (chi(2) = 0.040, 1 d.f., P = 0.842). We found no evidence for an association with the other three polymorphisms or with the haplotypes of these markers. Further, we found no sex-specific relationship. Our results, therefore, do not support the previous evidence for this gene as a major factor contributing to depression. (c) 2005 Wiley-Liss, Inc.
引用
收藏
页码:45 / 50
页数:6
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