Clinical Research Directory

In Utero Alcoholic Exposure: PlGF, Biomarker of Fetal Brain Lesions

This study aims to validate that PLGF is a biomarker of cerebral lesions and therefore of secondary developmental disorders and disabilities that will be best diagnosed at 2 and 6 years of age.

RCT of Prenatal Choline Supplementation During Pregnancy to Mitigate Adverse Effects of Prenatal Alcohol Exposure

Although the adverse effects associated with prenatal alcohol exposure (PAE) are well known, many women continue to drink heavily during pregnancy, putting their infants at risk for fetal alcohol spectrum disorders. Animal studies have shown that choline supplementation can mitigate effects of PAE on growth and development. Choline, an essential nutrient, serves as a methyl-group donor for DNA methylation and is a constituent of the neurotransmitter acetylcholine and a precursor to major components of cell membranes. In an R21 feasibility trial, 70 heavy drinkers were randomly assigned to receive a daily dose of 2g of choline or a placebo from initiation of antenatal care to delivery in Cape Town, South Africa, where the incidence of heavy drinking during pregnancy and fetal alcohol syndrome are among the highest in the world. When compared with infants in the placebo arm, infants in the choline-treated arm were more likely to meet criterion for eyeblink conditioning, demonstrated markedly better recognition memory on the Fagan Test of Infant Intelligence, which is known to have predictive validity for school-age IQ, and had better postnatal gains in weight and head circumference. Key features of this study included the higher choline dose (4.4 times adequate intake (AI), compared to 1.7-2.5 in previous human studies) and initiation of treatment early in pregnancy. We are now conducting a fully-powered, double-blind, randomized, placebo-controlled choline supplementation trial in heavy drinking pregnant women from a rural community in South Africa (1) to assess the effectiveness of maternal choline supplementation during pregnancy to mitigate effects of PAE on three primary outcomes: infant recognition memory and postnatal growth restriction (weight and head circumference); (2) to assess the efficacy of this supplementation for mitigating alcohol effects on the following secondary outcomes: infant eyeblink conditioning, postnatal length, and information processing speed; (3) to use innovative methods in causal inference analysis to examine protocol adherence as an important source of variation in treatment efficacy and to identify sociodemographic factors associated with non-compliance in order to facilitate implementation of the intervention protocol in clinical settings; and (4) in exploratory analyses, to examine whether maternal choline supplementation is particularly effective in women with lower dietary choline intake or poor nutritional status.

The Oklahoma Parent-Child Assistance Program

The Parent-Child Assistance Program (PCAP) helps mothers who have used alcohol, opioids, or other drugs during pregnancy and their children through the work of highly trained, closely supervised case managers. Case managers work closely with mothers over the course of three years, meeting the mothers in their own homes when possible, to help them to set goals and take advantage of available resources. The primary aims of PCAP include: (1) assisting mothers in obtaining substance use disorder (SUD) treatment and staying in recovery, (2) linking mothers to community resources that will help them build and maintain healthy, independent family lives for themselves and their children, and (3) preventing future drug and alcohol use during pregnancy. This study brings PCAP to Oklahoma (the state with the highest incarceration rate for women, where most enter the criminal justice system for drug charges) for the first time. This five-year project includes 200 women who will enroll in the study and be randomly assigned to the treatment (100 women) or control group (100 women). The intervention (i.e., PCAP services) will take place over a three-year period at two sites: Oklahoma City, Oklahoma and Tulsa, Oklahoma. This evaluation will measure participants' substance use, substance use disorder (SUD) treatment outcomes, and a host of other well-being outcomes-including but not limited to subsequent substance-exposed births, use of public assistance, education, use of family planning methods, and employment-to evaluate the effects of PCAP services. Among these, the investigators have identified four key outcomes: (1) the mother is on a reliable method of birth control, (2) abstinence for six months, (3) child custody (i.e., placement of children in foster care and/or with kinship providers), and (4) criminal justice involvement.