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  • Title: Some essential elements in maternal and cord blood in relation to birth weight and gestational age of the baby.
    Author: Srivastava S, Mehrotra PK, Srivastava SP, Siddiqui MK.
    Journal: Biol Trace Elem Res; 2002 May; 86(2):97-105. PubMed ID: 12008981.
    Abstract:
    Maternal and cord blood were collected from 54 Indian women at parturition and analyzed for Zn, Cu, and Fe by flame atomic absorption spectrophotometry to determine the relationship between levels of these elements in mother's and infant's blood and maternal age, birth weight, and gestational age of the baby. The blood Zn level of mothers in the age group 24-28 yr was significantly higher than those of mothers in the age group of 18-23 yr (p<0.05). Similarly, mothers in the 24 to 28-yr group also had higher blood Fe level than mothers in the group 29-38 yr (p<0.05). The levels of Zn, Cu, and Fe were higher in the maternal blood and lower, but not significantly, in the cord blood of low-birth-weight babies than in those of normal-birth-weight babies. However, differences in the levels of Zn, Cu, and Fe between maternal and cord blood of the two birth-weight groups was statistically significant. There were no significant differences in the levels of the three elements in maternal or cord blood by the gestational age of the baby. A weak but significant correlation was found between the birth weight of the baby and the Fe level in the cord blood (r=0.26; p<0.05). Also, weak significant correlations were observed between gestational age of the baby and Fe (r=0.23; p<0.05) and Cu (r=0.31; p<0.05) levels in the cord blood. Although, there are many confounders of low birth weight and preterm deliveries, a diminished placental transfer of these essential elements could be one of the several etiological factors for low birth weight of newborns.
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