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Associations of maternal serum concentration of iron-related indicators with birth outcomes in Chinese: a pilot prospective cohort study
Italian Journal of Pediatrics ( IF 3.6 ) Pub Date : 2024-03-05 , DOI: 10.1186/s13052-024-01621-0 Geng-dong Chen , Peng-sheng Li , Zi-xing Zhou , Hai-yan Wang , Xiao-yan Gou , Shao-xin Ye , Dong-xin Lin , Da-zhi Fan , Li-juan Wang , Zheng-ping Liu
Italian Journal of Pediatrics ( IF 3.6 ) Pub Date : 2024-03-05 , DOI: 10.1186/s13052-024-01621-0 Geng-dong Chen , Peng-sheng Li , Zi-xing Zhou , Hai-yan Wang , Xiao-yan Gou , Shao-xin Ye , Dong-xin Lin , Da-zhi Fan , Li-juan Wang , Zheng-ping Liu
Previous studies of maternal iron and birth outcomes have been limited to single indicators that do not reflect the comprehensive relationship with birth outcomes. We aimed to investigate the relationship between maternal iron metabolism and neonatal anthropometric indicators using comprehensive iron-related indicators. A total of 914 Chinese mother-child dyads were enrolled in this prospective study. Subjects’ blood samples were collected at ≤ 14 weeks of gestation. Serum concentrations of iron-related indicators were measured by enzyme-linked immunosorbent assay (ELISA). Femur length was measured by B-ultrasound nearest delivery. Neonatal anthropometric indicators were collected from medical records. After adjustment for potential covariates, higher iron (per one standard deviation, SD increase) was detrimentally associated with − 0.22 mm lower femur length, whereas higher transferrin (per one SD increase) was associated with 0.20 mm higher femur length. Compared with normal subjects (10th-90th percentiles), subjects with extremely high (> 90th percentile) iron concentration were detrimentally associated with lower femur length, birth weight, and chest circumference, and a higher risk of low birth weight, LBW (HR: 3.92, 95%CI: 1.28, 12.0). Subjects with high concentration of soluble transferrin receptor, sTFR and transferrin (> 90th percentile) were associated with higher femur length. Subjects with low concentration of iron and ferritin concentrations (< 10th percentile) were associated with a higher risk of LBW (HR: 4.10, 95%CI: 1.17, 14.3) and macrosomia (HR: 2.79, 95%CI: 1.06, 7.35), respectively. Maternal iron overload in early pregnancy may be detrimentally associated with neonatal anthropometric indicators and adverse birth outcomes.
更新日期：2024-03-05
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