期刊
SOCIAL COGNITIVE AND AFFECTIVE NEUROSCIENCE
卷 11, 期 9, 页码 1460-1470出版社
OXFORD UNIV PRESS
DOI: 10.1093/scan/nsw051
关键词
early life stress; epigenetics; intrauterine exposures delayed effect; intrauterine programming; psychosocial stress during pregnancy
资金
- Swiss National Science Foundation (SNSF) [51A240-104890]
- University of Basel
- Hoffmann-La Roche Corp.
- Basel Scientific Society
- Swiss National Science Foundation [P2BSP1_151913, 100014_135328]
- Korea Research Foundation within the Global Research Network Program [2013S1A2A2035364]
- National Research Foundation of Korea [2013S1A2A2035364] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Swiss National Science Foundation (SNF) [100014_135328, P2BSP1_151913] Funding Source: Swiss National Science Foundation (SNF)
The aim of this study was to investigate whether maternal adversities and cortisol levels during pregnancy predict cord blood DNA methylation of the oxytocin receptor (OXTR). We collected cord blood of 39 babies born to mothers participating in a cross-sectional study (N = 100) conducted in Basel, Switzerland (2007-10). Mothers completed the Inventory of Life Events (second trimester: T2), the Edinburgh Postnatal Depression Scale (EPDS, third trimester: T3), the Trier Inventory of Chronic Stress (TICS-K, 1-3 weeks postpartum) and provided saliva samples (T2, T3) for maternal cortisol profiles, as computed by the area under the curve with respect to ground (AUCg) or increase (AUCi) for the cortisol awakening response (CAR) and for diurnal cortisol profiles (DAY). OXTR DNA methylation was quantified using Sequenom EpiTYPER. The number of stressful life events (P = 0.032), EPDS score (P = 0.007) and cortisol AUCgs at T2 (CAR: P = 0.020; DAY: P = 0.024) were negatively associated with OXTR DNA methylation. Our findings suggest that distinct prenatal adversities predict decreased DNA methylation in a gene that is relevant for childbirth, maternal behavior and wellbeing of mother and offspring. If a reduced OXTR methylation increases OXTR expression, our findings could suggest an epigenetic adaptation to an adverse early environment.
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