Prevalence and incidence of postpartum depression and environmental factors: the IGEDEPP cohort

Background: IGEDEPP (Interaction of Gene and Environment of Depression during PostPartum) is a prospective multicenter cohort study of 3,310 Caucasian women who gave birth between 2011 and 2016, with follow-up until one year postpartum. The aim of the current study is to describe the cohort and estimate the prevalence and cumulative incidence of early and late postpartum depression (PPD). Methods: Socio-demographic data, personal and family psychiatric history, as well as stressful life events during childhood and pregnancy were evaluated at baseline. Early and late PPD were assessed at 8 weeks and 1 year postpartum respectively, using DSM-5 criteria. Results: The prevalence of early PPD was 8.3% (95%CI 7.3-9.3), and late PPD 12.9% (95%CI 11.5-14.2), resulting in an 8-week cumulative incidence of 8.5% (95%CI 7.4-9.6) and a one-year cumulative incidence of PPD of 18.1% (95%CI: 17.1-19.2). Nearly half of the cohort (N=1571, 47.5%) had a history of at least one psychiatric or addictive disorder, primarily depressive disorder (35%). Almost 300 women in the cohort (9.0%) reported childhood trauma. During pregnancy, 47.7% women experienced a stressful event, 30.2% in the first 8 weeks and 43.9% between 8 weeks and one year postpartum. Nearly one in five women reported at least one stressful postpartum event at 8 weeks. Conclusion: Incident depressive episodes affected nearly one in five women during the first year postpartum. Most women had stressful perinatal events. Further IGEDEPP studies will aim to disentangle the impact of childhood and pregnancy-related stressful events on postpartum mental disorders.Comment: 34 pages, 6 table

Meta-analyses of genome-wide association studies for postpartum depression

Objective: Postpartum depression (PPD) is a common subtype of major depressive disorder (MDD) that is more heritable, yet is understudied in psychiatric genetics. The authors conducted meta-analyses of genome-wide association studies (GWASs) to investigate the genetic architecture of PPD. Method: Meta-analyses were conducted on 18 cohorts of European ancestry (17,339 PPD cases and 53,426 controls), one cohort of East Asian ancestry (975 cases and 3,780 controls), and one cohort of African ancestry (456 cases and 1,255 controls), totaling 18,770 PPD cases and 58,461 controls. Post-GWAS analyses included 1) single-nucleotide polymorphism (SNP)–based heritability (), 2) genetic correlations between PPD and other phenotypes, and 3) enrichment of the PPD GWAS findings in 27 human tissues and 265 cell types from the mouse central and peripheral nervous system. Results: No SNP achieved genome-wide significance in the European or the trans-ancestry meta-analyses. The of PPD was 0.14 (SE=0.02). Significant genetic correlations were estimated for PPD with MDD, bipolar disorder, anxiety disorders, posttraumatic stress disorder, insomnia, age at menarche, and polycystic ovary syndrome. Cell-type enrichment analyses implicate inhibitory neurons in the thalamus and cholinergic neurons within septal nuclei of the hypothalamus, a pattern that differs from MDD. Conclusions: While more samples are needed to reach genome-wide levels of significance, the results presented confirm PPD as a polygenic and heritable phenotype. There is also evidence that despite a high correlation with MDD, PPD may have unique genetic components. Cell enrichment results suggest GABAergic neurons, which converge on a common mechanism with the only medication approved by the U.S. Food and Drug Administration for PPD (brexanolone)

Major depressive episode and postpartum depression: A network analysis comparison on the IGEDEPP cohort

International audienceIntroduction Major depression episode (MDE) and postpartum depression (PPD) have the same diagnosis criteria, but dissimilarities may be present regarding the frequency and structure of depressive symptoms. Methods We used data from the IGEDEPP Cohort (France) to examine DSM-5 depressive symptoms in two groups of women: 486 with PPD and 871 with a history of non-perinatal MDE. We compare (i) the frequency of each depressive symptom adjusted for the severity of depression, (ii) the global structure of depressive symptom networks, and (iii) the centrality of each symptom in the two networks. Results Women with PPD were significantly more likely to have appetite disturbance, psychomotor symptoms, and fatigue than those with MDE, while sadness, anhedonia, sleep disturbance, and suicidal ideation were significantly less common. There were no significant differences in the global structure of depressive symptoms of MDE and PPD. However, the most central criterion of the MDE network was Sadness while it was Suicidal ideations for the PPD network. Sleep and Suicidal ideations criteria were more central for PPD network, whereas Culpability was more important for MDE network than for PPD network. Conclusion We found differences in depressive symptoms expression between PPD and MDE, which justify continuing to clinically distinguish PPD from MDE

The role of comorbidity in the association of obesity with unemployment and disability

International audienceObjectiveThe association of obesity with a large range of physical conditions and numerous psychiatric disorders has been extensively studied. Our study sought the extent to which physical conditions or psychiatric disorders associated with obesity mediate the association of obesity with unemployment or disability.MethodUsing data from the National Epidemiologic Survey on Alcohol and Related Conditions-III (NESARC-III, 2012-2013), we estimated the prevalence of unemployment as a function of obesity taking into account these comorbidities. Data on self-reported height and weight were available for 35,725 respondents. Clinician-diagnosed physical conditions were self-reported and lifetime psychiatric disorders were assessed with a semi-structured interview.ResultsThe adjusted prevalence of obesity was 30.4%. Participants with obesity were more likely than participants without obesity to report at least one of the 31 assessed physical conditions (64.46% vs 46.87%; p<0.001). Participants with obesity were more likely to report at least one of the 24 assessed psychiatric diagnoses than respondents without obesity (60.57 vs 56.75%; p<0.001).The rates of unemployment were higher in participants with obesity than in those without obesity (15.75% vs 11.26%; p<0.001). Similarly, participants with obesity reported higher rates of disability than those without obesity.While the number of physical conditions and psychiatric disorders partly explains this association, obesity remained significantly associated with unemployment and greater disability when controlling for the number of physical conditions and psychiatric disorders.ConclusionObesity is associated with high rates of unemployment and with high disability. This is not explained solely by the high rate of physical conditions and psychiatric disorders associated with obesity

Childhood Trauma and Perinatal Depression: Data From the IGEDEPP Cohort

International audienceBackground: Childhood trauma (CT) is associated with an increased risk of major depressive disorder, but little is known about the impact of CT on depression during pregnancy and the early and late postpartum period. The present study assesses whether CT is associated with perinatal depression, considering different types of CT.Methods: This study used data from the Interaction of Gene and Environment of Depression in PostPartum (IGEDEPP), a French multicenter prospective cohort study, including 3,252 women who completed the Childhood Trauma Questionnaire at the maternity department between November 2011 and June 2016. Depression during pregnancy was assessed retrospectively at the maternity department using DSM-5 criteria. Early- and late-onset postpartum depression were assessed at 2 months and 1 year postpartum, respectively.Results: Among the 3,252 women, 298 (9.2%) reported at least 1 CT. Women with CT had a higher risk of depression (OR = 2.2; 95% CI, 1.7-2.7), anxiety (OR = 2.3; 95% CI, 1.7-3.0), and suicide attempts (OR = 5.4; 95% CI, 3.5-8.4) than women without CT. Perinatal depression was more frequent in women with CT than in women without CT, after adjustment for sociodemographic characteristics and personal history of major depressive episode and consideration of the timing of onset (pregnancy, early or late postpartum) (P < .001). There was a dose effect between the number of CT types and the risk of perinatal depression.Conclusions: These results show that CT is associated with a depressive episode during adulthood, specifically in the perinatal period. These findings may lead to special prenatal care for women abused or neglected during childhood, to better screen and treat perinatal depression.Trial registration: ClinicalTrials.gov identifier: NCT01648816

Risk of Hypertensive Disorders of Pregnancy in Women Treated With Serotonin-Norepinephrine Reuptake Inhibitors: A Comparative Study Using the EFEMERIS Database

International audienceBackground: Among antidepressants, serotonin-norepinephrine reuptake inhibitors (SNRIs) are particularly expected to increase the risk of hypertensive disorders of pregnancy (HDP) with regard to their biological mechanism. We aimed to evaluate the association between prenatal exposure to SNRI and HDP.Methods: In EFEMERIS, a French database including pregnant women covered by the French Health Insurance System of Haute-Garonne (2004-2019), we compared the incidence of HDP among women exposed to SNRI monotherapy during the first trimester of pregnancy to the incidence among 2 control groups: (1) women exposed to selective serotonin reuptake inhibitor (SSRI) monotherapy during the first trimester and (2) women not exposed to antidepressants during pregnancy. We conducted crude and also multivariate logistic regressions.Results: Of the 156,133 pregnancies, 143,391 were included in the study population, including 210 (0.1%) in the SNRI group, 1,316 (0.9%) in the SSRI group, and 141,865 (98.9%) in the unexposed group. After adjustment for depression severity and other mental conditions, the risk of HDP was significantly higher among women exposed to SNRIs (n = 20; 9.5%) compared to women exposed to SSRIs (n = 72; 5.5%; adjusted odds ratio [aOR] [95% CI] = 2.32 [1.28-4.20]) and to unexposed women (n = 6,224; 4.4%; aOR [95% CI] = 1.89 [1.13-3.18]).Conclusion: This study indicated an increased risk of HDP in women treated with SNRIs versus women treated with SSRIs