Maternal depressive symptoms during pregnancy, placental expression of genes regulating glucocorticoid and serotonin function and infant regulatory behaviors. Issue 15 (22nd June 2015)

• Record Type: Journal Article
• Authors: Räikkönen, K.; Pesonen, A.-K.; O'Reilly, J. R.; Tuovinen, S.; Lahti, M.; Kajantie, E.; Villa, P.; Laivuori, H.; Hämäläinen, E.; Seckl, J. R.; Reynolds, R. M.
• Is Part Of: Psychological medicine. Volume 45:Issue 15(2015)
• Page Start: 3217
• Page End: 3226
• Publication Date: 2015-06-22
• Subjects: Behaviour, -- infant, -- mother, -- mRNA, -- placenta, -- pregnancy, -- prospective; Psychiatry -- Periodicals; Medicine and psychology -- Periodicals; Clinical psychology -- Periodicals; 616.89
• DOI: 10.1017/S003329171500121X
• Languages: English
• ISSNs: 0033-2917

Abstract

Abstract : Background: Glucocorticoids and serotonin may mediate the link between maternal environment, fetal brain development and 'programming' of offspring behaviors. The placenta regulates fetal exposure to maternal hormonal signals in animal studies, but few data address this in humans. We measured prospectively maternal depressive symptoms during pregnancy and mRNAs encoding key gene products determining glucocorticoid and serotonin function in term human placenta and explored associations with infant regulatory behaviors. Method: Bi-weekly self-ratings of the Center for Epidemiologic Studies Depression Scale from 12th to 13th gestational week onwards and term placental mRNAs of 11beta-hydroxysteroid dehydrogenase type 2 ( HSD2B11 ), type 1 ( HSD1B11 ), glucocorticoid ( NR3C1 ), mineralocorticoid receptors ( NR3C2 ) and serotonin transporter ( SLC6A4 ) were obtained from 54 healthy mothers aged 32.2 ± 5.3 years with singleton pregnancies and without pregnancy complications. Infant regulatory behaviors (crying, feeding, spitting, elimination, sleeping and predictability) were mother-rated at 15.6 ± 4.2 days. Results: Higher placental mRNA levels of HSD2B11 [0.41 standard deviation (s.d. ) unit increase pers.d. unit increase; 95% confidence interval (CI) 0.13–0.69, p = 0.005], HSD1B11 (0.30, 0.03–0.57, p = 0.03), NR3C1 (0.44, 0.19–0.68, p = 0.001) and SLC6A4 (0.26, 0.00–0.53, p = 0.05) were associated with more regulatory behavioral challenges of the infant. Higher placental NR3C1 mRNA partly mediated the association between maternal depressive symptoms during pregnancy and infant regulatory behaviors ( p < 0.05). Conclusions: Higher placental expression of genes regulating feto-placental glucocorticoid and serotonin exposure is characteristic of infants with more regulatory behavioral challenges. Maternal depression acts, at least partly, via altering glucocorticoid action in the placenta to impact on offspring regulatory behaviors.