Oxytocin receptor DNA methylation in postpartum depression.

Oxytocin receptor DNA methylation in postpartum depression.
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DOI:
10.1016/j.psyneuen.2016.04.008
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发表时间:
2016-07
影响因子:
3.7
通讯作者:
Kaminsky Z
Kaminsky Z
中科院分区:
医学2区
文献类型:
--
作者:
Kimmel M;Clive M;Gispen F;Guintivano J;Brown T;Cox O;Beckmann MW;Kornhuber J;Fasching PA;Osborne LM;Binder E;Payne JL;Kaminsky Z

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催产素受体(OXTR)是压力和焦虑的关键调节因子,可能受到社会心理危险因素和性腺激素的调节,使其成为产后抑郁症(PPD)研究的有吸引力的候选者。本研究的目的是研究 OXTR 中血清激素和 PPD 特异性 DNA 甲基化变异。在前瞻性 PPD 队列中生成的 Illumina HM450 微阵列数据发现,OXTR 中靠近雌激素受体 (ER) 结合区 4bp 的内含子区域与 PPD 存在显着关联 (P=0.014)。焦磷酸测序证实了具有儿童虐待状况的区域中 CpG 相互作用介导 PPD 的适度证据。这些位于 chr3 位置 8810078 和 8810069 的 CpG 与由 240 名没有精神病史的女性组成的独立队列的产后抑郁评分显着相关。激素分析表明该区域 DNA 甲基化与血清雌二醇水平存在 PPD 特异性负相关。雌二醇水平和 OXTR DNA 甲基化表现出与别孕酮与黄体酮比率相关的显着相互作用。总的来说,这些数据证实了我们之前的假设,即 PPD 特异性增加了雌激素靶基因表观遗传重编程的敏感性,并表明 OXTR 表观遗传变异可能是情绪相关神经活性类固醇产生的重要介质。
The oxytocin receptor (OXTR) is a key regulator of stress and anxiety and may be regulated by both psychosocial risk factors and gonadal hormones,making it an attractive candidate for study in postpartum depression (PPD). The objective of this study was to investigate both serum hormone and PPD specific DNA methylation variation in the OXTR. Illumina HM450 microarray data generated in a prospective PPD cohort identified significant associations (P=0.014) with PPD in an intronic region in the OXTR located 4bp proximal to an estrogen receptor (ER) binding region. Pyrosequencing confirmed moderate evidence for an interaction of CpGs in the region with childhood abuse status to mediate PPD. These CpGs located on chr3 at positions 8810078 and 8810069 exhibited significant associations with postpartum depression scores from an independent cohort of 240 women with no prior psychiatric history. Hormone analysis suggested a PPD specific negative correlation of DNA methylation in the region with serum estradiol levels. Estradiol levels and OXTR DNA methylation exhibited a significant interaction to associate with the ratio of allopregnanolone to progesterone. Cumulatively, the data corroborate our previous hypotheses of a PPD specific increased sensitivity of epigenetic reprogramming at estrogen target genes and suggests that OXTR epigenetic variation may be an important mediator of mood relevant neuroactive steroid production.
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