Prenatal cocaine effects on brain structure in early infancy.

Prenatal cocaine exposure (PCE) is related to subtle deficits in cognitive and behavioral function in infancy, childhood and adolescence. Very little is known about the effects of in utero PCE on early brain development that may contribute to these impairments. The purpose of this study was to examine brain structural differences in infants with and without PCE. We conducted MRI scans of newborns (mean age = 5 weeks) to determine cocaine's impact on early brain structural development. Subjects were three groups of infants: 33 with PCE co-morbid with other drugs, 46 drug-free controls and 40 with prenatal exposure to other drugs (nicotine, alcohol, marijuana, opiates, SSRIs) but without cocaine. Infants with PCE exhibited lesser total gray matter (GM) volume and greater total cerebral spinal fluid (CSF) volume compared with controls and infants with non-cocaine drug exposure. Analysis of regional volumes revealed that whole brain GM differences were driven primarily by lesser GM in prefrontal and frontal brain regions in infants with PCE, while more posterior regions (parietal, occipital) did not differ across groups. Greater CSF volumes in PCE infants were present in prefrontal, frontal and parietal but not occipital regions. Greatest differences (GM reduction, CSF enlargement) in PCE infants were observed in dorsal prefrontal cortex. Results suggest that PCE is associated with structural deficits in neonatal cortical gray matter, specifically in prefrontal and frontal regions involved in executive function and inhibitory control. Longitudinal study is required to determine whether these early differences persist and contribute to deficits in cognitive functions and enhanced risk for drug abuse seen at school age and in later life.

The Mood, Mother, and Infant Study: Associations Between Maternal Mood in Pregnancy and Breastfeeding Outcome.

Purpose: We sought to determine the role of depression and anxiety in breastfeeding cessation. Materials and Methods: Participants underwent a baseline visit with a structured clinical interview in the third trimester of pregnancy. Monthly phone interviews assessed current mood symptoms and infant feeding status. We assessed the association between baseline mood and infant feeding outcomes using Cox proportional hazards regression, adjusting for infant feeding intention and sociodemographic confounders. Results: We enrolled 222 mother-infant dyads in late pregnancy, of whom 206 completed assessments through 12 months postpartum. We enriched our study with symptomatic women by enrolling 87 women with current depression or anxiety (Current), 64 women with a history of depression or anxiety (Past), and 71 women with no psychiatric history (Never). In multivariable-adjusted analyses, baseline diagnosis was not associated with breastfeeding outcome, but baseline symptoms of depression (Beck Depression Inventory ≥11) or anxiety (Spielberger State Anxiety ≥40) were associated with earlier introduction of formula (depression: adj hazard ratio [HR] 1.52, 95% confidence interval [CI] 1.01-2.30; anxiety: 1.70, 95% CI 1.01-2.87); and any cessation of breastfeeding (depression: adj HR 2.02, 95% CI 1.23-3.31; anxiety: 1.83, 95% CI 1.00-3.33), as were depression symptoms among women who were being treated with antidepressants, compared with untreated asymptomatic women (formula: adj HR 2.27, 95% CI 1.29-4.02; cessation: 2.32, 95% CI 1.17-4.61). History of childhood trauma (adj HR 1.34, 95% CI 1.12-1.61), disordered eating symptoms (adj HR 1.22, 95% CI 1.02-1.46), and poor sleep quality in pregnancy (adj HR 1.32, 95% CI 1.09-1.60) were independently associated with earlier introduction of formula. Conclusions: Baseline mood symptoms were independently associated with earlier formula introduction and cessation of breastfeeding. History of childhood trauma, disordered eating symptoms and poor sleep quality were associated with earlier formula introduction. Targeted support may enable women with these symptoms to achieve their feeding goals.