alexa Influences of Maternal Stress during Pregnancy on the Epi/genome: Comparison of Placenta and Umbilical Cord Blood | OMICS International | Abstract
ISSN: 2167-1044

Journal of Depression and Anxiety
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Research Article

Influences of Maternal Stress during Pregnancy on the Epi/genome: Comparison of Placenta and Umbilical Cord Blood

Jia Chen1,2,3*, Qian Li1, Alexender Rialdi4, Elana Mystal5,6, Jenny Ly5,6, Jackie Finik5,6, Taira Davey6, Luca Lambertini1 and
Yoko Nomura5,6,7
1 Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
2 Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
3 Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
4 Graduate School, Icahn School of Medicine at Mount Sinai, New York, NY, USA
5 Department of Psychology, Queens College, CUNY, Flushing, NY, USA
6 Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
7 William E. Macaulay Honors College (Queens), New York, NY, USA
*Corresponding Author : Jia Chen
Department of Preventive Medicine
Icahn School of Medicine at Mount Sinai
One Gustave L. Levy Place
New York, NY, 10029, USA
E-mail: [email protected]
Received December 09, 2013; Accepted February 19, 2014; Published February 25, 2014
Citation: Chen J, Qian Li, Rialdi A, Mystal E, Jenny Ly, et al. (2014) Influences of Maternal Stress during Pregnancy on the Epi/genome: Comparison of Placenta and Umbilical Cord Blood. J Depress Anxiety 3:152. doi:10.4172/2167-1044.1000152
Copyright: © 2014 Chen J, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Background: Maternal stress during pregnancy is one of the major adverse environmental factors in utero that is capable of influencing health outcomes of the offspring throughout life. Both genetic and epigenetic processes are susceptible to environmental insults in utero and are potential biomarkers of the experienced environment including maternal stress. Methods: We profiled expression level of six genes in hypothalamic pituitary adrenal (HPA) axis functioning (HSD11B2, SLC6A4, NR3C1, NR3C2, CRHR1 and CRHR2), two imprinted genes (IGF2 and H19) and one neurodevelopmental gene (EGR1), from 49 pairs of placenta and umbilical cord blood (UCB) samples from a birth cohort. We also assessed global methylation levels by LUminometric Methylation Assay (LUMA) and methylation at the imprinting control region (ICR) of IGF2/H19. Results: Little correlations between paired placenta and UCB were observed except H19 expression (r = 0.31, P = 0.04) and IGF2/H19 ICR methylation (r = 0.43, P = 0.01); gene expression levels were significantly higher (P < 0.001) in placenta than UCB except CRHR1 and CRHR2, which were unexpressed in placenta. Maternal stress correlated higher levels of HPA genes and lower levels of EGR1 and LUMA, but only in placenta. Positive association between maternal stress and IGF2/H19 ICR methylation was present in both placenta and UCB. Conclusions: Our findings support the notion that adverse in utero environment, as measured by antenatal maternal stress, depression and anxiety, can be observed in the epi/genome of the relevant tissues, i.e. placenta and UCBs, leading to development of molecular markers for assessing in utero adversities.

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