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  • Title: Status of Vitamin A and Related Compounds and Clinical Outcomes in Maternal-Infant Pairs in the Midwestern United States.
    Author: Hanson C, Schumacher M, Lyden E, Furtado J, Van Ormer M, McGinn E, Rilett K, Cave C, Johnson R, Weishaar K, Anderson-Berry A.
    Journal: Ann Nutr Metab; 2017; 71(3-4):175-182. PubMed ID: 28942446.
    Abstract:
    BACKGROUND: Vitamin A is an essential nutrient for pregnant women, and other vitamin A-related compounds, including lutein and lycopene, have been associated with maternal-infant outcomes. The objective of this study was to quantify the status of vitamin A and related compounds in maternal-infant pairs at the time of delivery, and to determine its impact on clinical outcomes. METHODS: Maternal and cord blood samples were collected in 189 mother-infant pairs. Concentrations of lutein + zeaxanthin, β-cryptoxanthin, lycopene, carotenes, and retinol were measured using high-performance liquid chromatography. Descriptive statistics was calculated and Spearman coefficients were used to assess correlations between maternal and cord measurements. Kruskal-Wallis and independent samples t test were used to compare measures between retinol groups. Linear and logistic regression models were used to adjust for relevant confounders. p < 0.05 was considered statistically significant. RESULTS: Ten percent of mothers had serum retinol concentrations ≤0.70 µmol/L; 80% of infants had serum retinol concentrations ≤0.70 µmol/L. Low maternal retinol concentrations were associated with maternal anemia (p = 0.04) and a trend toward low birth weight (p = 0.06). Maternal and infant concentrations of vitamin A compounds were highly correlated. After adjustment for confounders, maternal lutein was associated with a C-section (p = 0.03) and a diagnosis of respiratory distress syndrome in the infant (p = 0.02). Maternal lycopene was associated with growth parameters in the infant. CONCLUSIONS: As vitamin A-related compounds are modifiable by diet, future research determining the clinical impact of these compounds is warranted.
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