Associations between Maternal Exposure to Bisphenol A or Triclosan and Gestational Hypertension and Preeclampsia: The MIREC Study.

BACKGROUND: Little is known about the association between bisphenol A (BPA) or triclosan (TCS) exposure and hypertension in pregnancy. OBJECTIVE: To investigate potential associations between maternal urinary concentrations of BPA or TCS and gestational hypertension (GH) and preeclampsia. STUDY DESIGN: Among 1,909 pregnant women participating in the maternal-infant research on environmental chemicals (MIREC) study, urinary concentrations of BPA and TCS were measured in the first trimester by liquid chromatography-tandem mass spectrometry using isotope dilution. Blood pressure was measured during each trimester. Multinomial regression was performed to estimate the adjusted odds ratio (aOR) and 95% confidence intervals (CI) for the associations between these phenols and GH and preeclampsia. RESULTS: BPA and TCS were not associated with GH or preeclampsia. However, in multiparous women, BPA (0.50-1.30 µg/L) was associated with decreased risk of GH (aOR =0.45; 95%CI: 0.21-0.98) while among nulliparous women, TCS was associated with an increased risk of GH (3.60-32.60 µg/L; aOR = 2.58; 95% CI: 1.09-6.13 and > 32.60 µg/L: aOR = 2.74; 95% CI: 1.15-6.51). CONCLUSION: BPA and TCS urinary concentrations were not associated with GH or preeclampsia; however, our results suggest an association between TCS and GH in nulliparous women. Additional studies are required to confirm our results.

Effect of Maternal Docosahexaenoic Acid Supplementation on Very Preterm Infant Growth: Secondary Outcome of a Randomized Clinical Trial.

INTRODUCTION: The aim of the study was to determine the effect of a maternal docosahexaenoic acid (DHA) supplementation during lactation, compared with a placebo, on the neonatal growth profile of breastfed very preterm infants. METHODS: Preterm infants' growth profile, growth velocity from birth to 36 weeks' postmenstrual age (PMA), and growth at 36 weeks' PMA were pre-specified secondary outcomes of a randomized placebo-controlled trial conducted in 16 Canadian neonatal intensive care units (2015-2018). Lactating mothers who delivered before 29 weeks' gestation were given 1.2 g of DHA daily or a placebo within 72 h of delivery and up to 36 weeks' PMA. Analyses were performed using a linear regression model with generalized estimating equations. RESULTS: 461 mothers and their 528 infants (DHA, N = 273; placebo, N = 255) were included with mean gestational age of 26.5 weeks (standard deviation [SD] = 1.6); 275 (52.1%) were males; mean birth weight was 895 g (SD = 240). DHA interaction with sex was significant on weight profile (interaction p < 0.001), weight velocity (interaction p = 0.05), and weight at 36 weeks' PMA (interaction p = 0.02). Females in the DHA group gained more weight compared to the placebo group (mean difference [MD], 52.6 g [95% confidence interval [CI]: 24.5-80.8], p < 0.001). Weight velocity was significantly higher in females of the DHA group (MD, 3.4 g/kg/day [95% CI: 0.6-6.2], p = 0.02). At 36 weeks' PMA, the weight of males in the DHA group was significantly smaller (MD, -88.9 g [95% CI: -166.2 to -11.6], p = 0.02). CONCLUSION: DHA positively affected female infants' neonatal weight profile and velocity and negatively affected male infants' weight at 36 weeks' PMA.

Dental amalgams and risk of gestational hypertension in the MIREC study.

BACKGROUND: The potential association between the presence or replacement of dental amalgams and gestational hypertension (GH) is unclear. OBJECTIVE: To assess the association between the presence or replacement of dental amalgams and the risk of GH in a prospective cohort study. METHODS: We assessed dental amalgam status (presence or replacement), blood mercury concentrations, and measured blood pressure (BP) in 1817 pregnant women recruited in 10 Canadian cities. BP was assessed in each trimester of pregnancy and mercury concentrations in 1st and 3rd trimesters. Logistic regression analysis was performed to estimate the adjusted odds ratios (aOR) and 95% confidence intervals (CI) for the associations between dental amalgam status and GH. Concurrent measures with systolic BP (SBP) and diastolic BP (DBP) were assessing through linear generalized estimating equations. RESULTS: Dental amalgam status was weakly statistically correlated with mercury concentrations but there was no evidence of an association with GH in women having 1-4 (aOR = 1.31 (0.92, 1.85)) or ≥ 5 dental amalgams (aOR = 1.32 (0.86, 2.04)), compared to women without amalgam reported at first trimester. Dental amalgam replacement reported in the first or third trimester was similarly not associated with GH (aOR = 0.75 (0.40, 1.42) and 0.73 (0.39, 1.34), respectively) but with SBP (beta = -1.58 (-2.95, -0.02)). CONCLUSION: We found weak correlations between dental amalgams and blood mercury among pregnant women. However, the presence of dental amalgams or their replacement was not associated with GH but with decreased SBP for the replacement. Further studies are required.

Mental Health Disorders Among Women Victims of Conflict-Related Sexual Violence in the Democratic Republic of Congo.

To assess the effects of sexual violence (SV) in armed conflicts on women's mental health, on its own and in conjunction with reproductive health issues such as fistula or chronic pelvic pain (CPP). A cross-sectional population-based study of 320 women living in Goma, the Democratic Republic of Congo, aged 15 to 45 years, was conducted. Women who experienced conflict-related sexual violence (CRSV) were compared with those who experienced non-conflict-related sexual violence (NCRSV) and those who never experienced such acts. Data were gathered through individual interviews by local staff using standardized questionnaires. The outcomes investigated were post-traumatic stress disorder (PTSD) symptoms severity and psychological distress symptoms (PDS) severity. Experience of SV in either context was associated with more severe PDS (p < .0001). Only CRSV was associated with more severe PTSD symptoms (p < .0001). Women who suffered from fistula or CPP also had a higher PDS score mean (p < .0001 and p = .007) and a higher PTSD symptoms score mean (p < .0001, for both reproductive health issues). Multivariate analyses showed that compared with women who never experienced SV and never suffered from fistula or CPP, those who experienced CRSV and suffered from fistula or CPP had the most severe PDS and PTSD symptoms after adjustment for potential confounders. The differences in PDS and PTSD symptoms severity were all significant (p < .0001). Psychological and physical health care are urgently needed for women who experienced CRSV, particularly those with additional issues of fistula or CPP. Current interventions should simultaneously seek to improve both reproductive and mental health.