Vitamin D level in cord blood and neonatal outcomes in a birth cohort study in Shanghai
10.3969/j.issn.1000-3606.2017.06.009
- VernacularTitle:脐带血维生素D水平与新生儿生长指标的关系
- Author:
Xiuxia YE
;
Yuanjin SONG
;
Yanrui JIANG
;
Jianhua LIN
;
Yu ZHANG
;
Fei BEI
;
Fan JIANG
- Keywords:
cord blood;
25(OH)D;
neonate outcomes;
neonate
- From:
Journal of Clinical Pediatrics
2017;35(6):430-434
- CountryChina
- Language:Chinese
-
Abstract:
Objectives To detect the cord blood vitamin D level in neonates and to determine the association between the cord blood vitamin D level and neonatal outcomes. Methods A total of 223 eligible mother-and-singleton-offspring pairs were recruited. The information of mothers' pregnancy was collected by questionnaires. The weight, length, and head circumference of neonates were measured. The levels of 25(OH)D in cord blood of neonates and in blood of late pregnancy mothers were determined by chemiluminescence immunoassay. Results The median concentration of 25(OH)D in cord blood was 20.7 nmol/L, and 82.1% of neonate had vitamin D deficiency, and 12.1% had severe vitamin D deficiency (<10 nmol/L). The concentration of 25(OH)D in cord blood was consistent with that in blood of late pregnancy mother. The distribution of concentration of 25(OH)D in cord blood was significantly different in neonates in different seasons of birth (P<0.05). There were more cases <10 nmol/L in winter and spring. The concentration of 25(OH)D in cord blood had no significant associations with the incidences of low birth weight (LBW) and small for gestational age (SGA) (P>0.05). After the variables of sex, gestational age and birth season are controlled, the birth weight and head circumference were significantly different in neonates with different concentrations of 25(OH)D in cord blood (P<0.05). Conclusions The concentration of 25(OH)D in cord blood in term neonates was generally lower. The vitamin D status in neonates was consistet with that in their late pregnancy mothers. Cord blood 25(OH) D levels were associated with neonates' birth weight and head circumference, but it should be confirmed by larger sample size in the future.
