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- Title
Cord blood vitamin A and vitamin D levels in relation to physical growth in exclusively breastfed infants aged 0-6 months.
- Authors
Wei Zhao; Chao Li; Wen Zhi Shen; Kai Yun Li; Yi Xi Cai; Feng Li; Hong Fu; Bin Peng; Jie Chen; Ting Yu Li; Li Chen
- Abstract
Background: Vitamins A and D are essential for the health of pregnant women and infants. Nevertheless, the relationship between umbilical cord blood vitamins A and D levels and the physical growth of exclusively breastfed infants remains uncertain. Objective: This cohort study aims to examine the relationship between cord blood vitamins A and D levels and the physical growth of exclusively breastfed infants aged 0-6 months. Methods: 140 singleton mother-infant pairs were recruited in total. Questionnaires were used to collect maternal and infant information, and liquid chromatography was utilized to quantify the levels of vitamins A and D in the umbilical cord blood. Anthropometric measurements were conducted at birth, at 3 and 6 months of age, and the weight-for-age z-score (WAZ), length-for-age z-score (LAZ), head circumference-for-age z-score (HAZ), and BMI-forage z-score (BMIZ) were calculated. Univariate and multivariate linear regression models were used for the analysis. Results: The average concentration of vitamins A and D in cord blood was 0.58 ± 0.20 mmol/L and 34.07 ± 13.35 nmol/L, both below the normal range for children. After adjusting for confounding factors, vitamin A levels in cord blood positively correlated with HAZ growth in infants aged 3-6 months (β= 0.75, P < 0.01) while vitamin D levels negatively correlated with LAZ growth (β= -0.01, P = 0.01) and positively correlated with BMIZ growth (β= 0.02, P < 0.01). Conclusion: Higher Vitamin A levels at birth promote HAZ growth in infants aged 3-6 months while higher vitamin D levels at birth promote BMIZ growth in infants aged 3-6 months.
- Subjects
VITAMIN A; CORD blood; VITAMIN D; WOMEN'S health; LIQUID chromatography; BREASTFEEDING; INFANT growth
- Publication
Frontiers in Endocrinology, 2024, p1
- ISSN
1664-2392
- Publication type
Article
- DOI
10.3389/fendo.2024.1394408