The role of early adversity and cognitive vulnerability in postnatal stress and depression

The purpose of the present study was to examine vulnerability factors in expecting parents that might lead to mental illness in the perinatal period. Specifically, we studied how parental early adversity, attentional bias to infant faces, repetitive negative thinking, and demographic factors, were associated with pre- and postnatal depressive symptoms and parenting stress. Participants were expecting parents taking part in the Northern Babies Longitudinal Study, where assessments were made both pre- and postnatally. Assessments included both questionnaires and cognitive tasks. About half of the participants received the Newborn Behavior Observation (NBO)-intervention after birth, between pre- and postnatal assessments. Results show that repetitive negative thinking was a significant predictor of both depressive symptoms and parenting stress, while education, social support, and parity came out as protective factors, especially in mothers. Parental early adversity had an indirect effect on postnatal depressive symptoms and parenting stress, mediated by prenatal and postnatal depressive symptoms, respectively. The NBO intervention did not affect the results, signifying the importance of early childhood adverse events and negative thinking on parents' postnatal adjustment and mood, even when an intervention is provided. In conclusion, repetitive negative thinking is a significant vulnerability factor independent of the presence of depressive symptoms, and health professionals must be aware of parents’ thinking style both during pregnancy and after birth.

Breast may not always be best: moderation of effects of postnatal depression by breastfeeding and infant sex

Background There is good evidence that female infants are particularly vulnerable to poor emotional outcomes following in utero glucocorticoid exposure. It is currently unclear whether such effects might persist into the postnatal period for breastfed infants, as maternal cortisol is expressed in breastmilk and is influenced by maternal psychological distress. We pre-registered hypotheses that maternal postnatal depression would be associated with infant negative emotionality, and that this effect would be moderated by breastfeeding status and infant sex. Methods We analysed data from the Wirral Child Health and Development Study (WCHADS), a prospective epidemiological study starting in pregnancy. Nine weeks after birth mothers self-reported depressive symptoms and breastfeeding status, and reported infant negative emotionality using the distress to limits subscale of the infant behaviour questionnaire (IBQ-R) when their infant was aged 9 weeks and 14 months. Maximum likelihood estimations made use of data from 857 mother-infant pairs. Results At 9 weeks of age, maternal postnatal depressive symptoms were positively associated with infant distress to limits; however, this effect was not moderated by infant sex or breastfeeding. At age 14 months, the association between postnatal depression symptoms and distress to limits was greatest in the breastfed females, whereas the association was smaller, but still significant, in the non-breastfed females. For males, the association was non-significant in both the breastfed and non-breastfed groups. A test of sex difference between breastfed males and females was significant. Conclusions We provide evidence that effects of maternal postnatal depression on child emotional outcomes are moderated by breastfeeding status and differ by infant sex. Female vulnerability to elevated maternal breastmilk glucocorticoids may, at least in part, explain these effects.

Postnatal maternal depressive symptoms and behavioural outcomes in term- and preterm-born toddlers

ObjectivesTo examine the association between maternal depressive symptoms in the immediate postnatal period and offspring’s mental health in a large cohort of term- and preterm-born toddlers.Design and ParticipantsData were drawn from the Developing Human Connectome Project. Maternal postnatal depressive symptoms were assessed at term, and children’s outcomes were evaluated at a median corrected age of 18.4 months (range 17.3 – 24.3).Exposure and outcomesPreterm birth was defined as <37 weeks completed gestation. Maternal depressive symptoms were assessed with the Edinburgh Postnatal Depression Scale (EPDS). Toddlers’ outcome measures were parent-rated Child Behaviour Checklist 11/2-5 Total (CBCL) and Quantitative Checklist for Autism in Toddlers (Q-CHAT) scores. Toddlers’ cognition was assessed with the Bayley Scales of Infant and Toddler Development – Third Edition (Bayley-III).ResultsHigher maternal EPDS scores were associated with toddlers’ higher CBCL (B=0.93, 95% CI 0.43-1.44, p<0.001, f2=0.05) and Q-CHAT scores (B=0.27, 95% CI 0.03-0.52, p=.031, f2=0.01). Higher maternal EPDS scores were not associated with toddlers’ cognitive outcomes. Maternal EPDS, toddlers’ CBCL and Q-CHAT scores did not differ between preterm (n=97; 19.1% of the total sample) and term participants.ConclusionsOur findings indicate that children whose mothers had increased depressive symptoms in the early postnatal period, including subclinical symptoms, exhibit more maternally-reported behavioural problems in toddlerhood. These associations were independent of gestational age. Further research is needed to confirm the clinical significance of these findings.Strengths and limitations of this studyProspective study with a large sample, using multiple imputation to reduce non-response bias.Maternal depressive symptoms assessed as a continuous variable, providing more nuanced information about the significance of subclinical symptoms.Maternal depressive symptoms assessed earlier than in previous studies, enabling recognition of early screening opportunities for families.Potential shared method variance bias through parent-completed child behavioural assessments.Unknown paternal and parental factors, such as comorbid psychiatric conditions, that may confound our findings.

Prenatal Glucocorticoid-Exposed Infants Do Not Show an Age-Typical Fear Bias at 8 Months of Age – Preliminary Findings From the FinnBrain Birth Cohort Study

Synthetic glucocorticoids (sGC) are frequently administered to pregnant women at risk for preterm delivery to promote fetal lung maturation. Despite their undeniable beneficial effects in lung maturation, the impact of these hormones on developing brain is less clear. Recent human studies suggest that emotional and behavioral disorders are more common among sGC-exposed vs. non-exposed children, but the literature is sparse and controversial. We investigated if prenatal sGC exposure altered fear bias, a well-established infant attention phenotype, at 8-months. We used eye tracking and an overlap paradigm with control, neutral, happy, and fearful faces, and salient distractors, to evaluate infants’ attention disengagement from faces, and specifically from fearful vs. neutral and happy faces (i.e., a fear bias) in a sample (N = 363) of general population from the FinnBrain Birth Cohort Study. sGC exposed infants (N = 12) did not differ from non-exposed infants (N = 351) in their overall probability of disengagement in any single stimulus condition. However, in comparison with non-exposed infants, they did not show the age-typical fear bias and this association remained after controlling for confounding factors such as prematurity, gestational age at birth, birth weight, sex, and maternal postnatal depressive symptoms. Prenatal sGC exposure may alter emotional processing in infants. The atypical emotion processing in turn may be a predictor of emotional problems later in development. Future longitudinal studies are needed in order to evaluate the long-term consequences of sGC exposure for the developing brain.

Postnatal depression symptom trajectories across the COVID-19 pandemic: Evidence from the United Kingdom

Mounting evidence indicates the mental health of postnatal mothers suffered during the early stages of the COVID-19 pandemic. Using a four-wave online survey of United Kingdom mothers we explore the continuing trajectory of postnatal depressive symptoms. During the first lockdown 47.5% of mothers (n=162) met the ≥11 Edinburgh Postnatal Depression Scale cut-off for postnatal depression, falling to 32.8% (n=128) after lockdown easing, rising to 51.3% (n=569) in late 2020 as restrictions were increased and 54.0% (n=470) by February 2021.

Communication Across Maternal Social Networks During England’s First National Lockdown and Its Association With Postnatal Depressive Symptoms

Postnatal/postpartum depression (PND/PPD) had a pre-COVID-19 estimated prevalence ranging up to 23% in Europe, 33% in Australia, and 64% in America, and is detrimental to both mothers and their infants. Low social support is a key risk factor for developing PND. From an evolutionary perspective this is perhaps unsurprising, as humans evolved as cooperative childrearers, inherently reliant on social support to raise children. The coronavirus pandemic has created a situation in which support from social networks beyond the nuclear family is likely to be even more important to new mothers, as it poses risks and stresses for mothers to contend with; whilst at the same time, social distancing measures designed to limit transmission create unprecedented alterations to their access to such support. Using data from 162 mothers living in London with infants aged ≤6 months, we explore how communication with members of a mother’s social network related to her experience of postnatal depressive symptoms during the first “lockdown” in England. Levels of depressive symptoms, as assessed via the Edinburgh Postnatal Depression Scale, were high, with 47.5% of the participants meeting a ≥11 cut-off for PND. Quasi-Poisson regression modelling found that the number of network members seen in-person, and remote communication with a higher proportion of those not seen, was negatively associated with depressive symptoms; however, contact with a higher proportion of relatives was positively associated with symptoms, suggesting kin risked seeing mothers in need. Thematic qualitative analysis of open text responses found that mothers experienced a burden of constant mothering, inadequacy of virtual contact, and sadness and worries about lost social opportunities, while support from partners facilitated family bonding. While Western childrearing norms focus on intensive parenting, and fathers are key caregivers, our results highlight that it still “takes a village” to raise children in high-income populations and mothers are struggling in its absence.

Anxiety and depressive symptoms of women in the perinatal period during the COVID-19 pandemic: A systematic review and meta-analysis

Aims: The prevalence of perinatal anxiety and depressive symptoms have been speculated to increase during an infectious disease outbreak but remains unknown in the context of the COVID-19 situation. Therefore, this review aimed to examine the prevalence of antenatal and postnatal anxiety and depressive symptoms among pregnant women and postpartum mothers during the COVID-19 period. Methods: Six electronic databases were systematically searched for articles from November 2019 to December 2020. Twenty-six observational studies and brief reports were included in the meta-analysis. Results: Overall, the prevalence of anxiety was greater than depression in both antenatal and postnatal periods, and the prevalence of depression was higher in the antenatal period than the postnatal period. The pooled prevalence for antenatal anxiety symptoms, antenatal depressive symptoms and postnatal depressive symptoms were 40% (95% confidence intervals (CI): 0.27–0.52), 27% (95% CI: 0.20–0.33) and 17% (95% CI: 0.10–0.24), respectively. Europe (56%, 95% CI: 0.28–0.85) had significantly higher prevalence of antenatal anxiety than Asia (16%, 95% CI: 0.09–0.23). Conclusions: The heightened prevalence of perinatal psychological disorders served as an impetus for healthcare professionals and policy makers to ramp up their support and mitigation strategies for pregnant women and mothers in times of health crisis.

Estimating the cumulative risk of postnatal depressive symptoms: the role of insomnia symptoms across pregnancy

Purpose Insomnia symptoms during late pregnancy are a known risk for postnatal depressive symptoms (PDS). However, the cumulative effect of various risk factors throughout pregnancy has not been explored. Our aim was to test how various insomnia symptoms (sleep latency, duration, quality, frequent night awakenings, early morning awakenings) and other risk factors (e.g., history of depression, symptoms of depression and anxiety, as well as sociodemographic factors) in early, mid-, and late pregnancy predict PDS. Methods Using data from the FinnBrain Birth Cohort Study and logistic regression analyses, we investigated the associations of distinct insomnia symptoms at gw 14, 24, and 34 with depressive symptoms (Edinburgh Postnatal Depression Scale score ≥ 11) 3 months postnatally. We also calculated separate and combined predictive models of PDS for each pregnancy time point and reported the odds ratios for each risk group. Results Of the 2224 women included in the study, 7.1% scored EPDS ≥ 11 3 months postnatally. Our predictive models indicated that sleep latency of ≥ 20 min, anxiety in early pregnancy, and insufficient sleep during late pregnancy predicted the risk of PDS. Furthermore, we found highly elevated odds ratios in early, mid-, and late pregnancy for women with multiple PDS risk factors. Conclusion Screening of long sleep latency and anxiety during early pregnancy, in addition to depression screening, could be advisable. Odds ratios of risk factor combinations demonstrate the magnitude of cumulating risk of PDS when multiple risk factors are present.