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• W2132152083 abstract "Environmentally induced epigenetic alterations are related to mental health. We investigated quantitative DNA methylation status before and after an acute psychosocial stressor in two stress-related genes: oxytocin receptor (OXTR) and brain-derived neurotrophic factor (BDNF ). The cross sectional study took place at the Division of Theoretical and Clinical Psychobiology, University of Trier, Germany and was conducted from February to August 2009. We included 83 participants aged 61–67 years. Thereof, 76 participants completed the full study procedure consisting of blood sampling before (pre-stress), 10 min after (post-stress) and 90 min after (follow-up) the Trier social stress test. We assessed quantitative DNA methylation of whole-blood cells using Sequenom EpiTYPER. Methylation status differed between sampling times in one target sequence of OXTR (P<0.001): methylation increased from pre- to post-stress (P=0.009) and decreased from post-stress to follow-up (P<0.001). This decrease was also found in a second target sequence of OXTR (P=0.034), where it lost statistical significance when blood cell count was statistically controlled. We did not detect any time-associated differences in methylation status of the examined BDNF region. The results suggest a dynamic regulation of DNA methylation in OXTR—which may in part reflect changes in blood cell composition—but not BDNF after acute psychosocial stress. This may enhance the understanding of how psychosocial events alter DNA methylation and could provide new insights into the etiology of mental disorders." @default.
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• W2132152083 date "2012-08-14" @default.
• W2132152083 modified "2023-10-18" @default.
• W2132152083 title "Dynamic changes in DNA methylation of stress-associated genes (OXTR, BDNF ) after acute psychosocial stress" @default.
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• W2132152083 doi "https://doi.org/10.1038/tp.2012.77" @default.
• W2132152083 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3432191" @default.
• W2132152083 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22892716" @default.
• W2132152083 hasPublicationYear "2012" @default.
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