Kinematics Analysis in Children with Prenatal Exposure to SSRIs
Kinematic analysis of fine motor control in 3- and 5-year olds is part of the longitudinal study of prenatal serotonin reuptake inhibitors (SRIs) and postnatal development. Kinematic analysis measures how well the reach was executed including movement time, smoothness, velocity peak, and acceleration. We manipulate visual information to examine the components of motor control in two ways: the child can see the target object but cannot see their hand; the child cannot see either the object or the hand (reaching in the dark), which requires using memory to organize the
reach and grasp. New evidence has shown that prenatal SRI exposure may compromise fine motor control. We have developed an innovative protocol and are currently evaluating participants. Primary Investigators: Linda LaGasse PhD,Amy Salisbury PhD.
Preschool Neurobehavior and Prenatal Antidepressant Exposure
Over 400,000 pregnant women and their fetuses experience Major Depressive Disorder (MDD) every year in the United States. Serotonin/Norepinephrine Reuptake Inhibitors (SRIs), are the most commonly chosen antidepressant medications for MDD during pregnancy. The original prenatal project focused on prenatal and postnatal development of infants whose mothers had MDD during pregnancy, with and without SRI treatment, compared to non-depressed mothers. Our early findings suggest that prenatal MDD and SRI exposure are both associated with alterations in sensory-motor development in the fetal period and early infancy. We are now following these children and their families through the preschool years. We hypothesize that the early motor effects of prenatal SRI exposure are related to alterations in fetal serotonin development and that these effects will diminish in exposed children by preschool age. By comparison, effects attributed to maternal MDD will be longer-lasting. We are currently examining the role of maternal MDD and prenatal SRI exposure on child sensory-motor integration, gross and fine motor control (kinematics), temperament, behavioral and emotional development, and sleep state with circadian biomarkers (urinary melatonin sulfate levels) related to psychiatric symptoms. We are also identifying potential epigenetic markers associated with these effects. The rationale for the proposed research is that once we know how early SRI exposure affects these key areas related to serotonin function, we will be able to identify specific mechanistic pathways, including epigenetic targets and biomarkers, for psychopathology. The expected outcomes will have a positive impact because they will lead to informed risk-benefit decision-making for pregnant women with MDD and provide new preventive and therapeutic targets for psychopathology in children. This will further translate into enormous reductions in overall costs due to the social and functional disability that may result from such conditions. Primary Investigator: Amy Salisbury PhD.