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Quantitating Iron Transport Across the Mouse Placenta In Vivo Using Nonradioactive Iron Isotopes
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[Status of iron nutrition in term pregnant women and their newborns]

Y Wu

    Zhonghua Fu Chan Ke Za Zhi
    |March 1, 1989
    PubMed

    Insights

    Iron deficiency anemia (IDA) in pregnant women impacts infant iron status. Specific biomarkers like serum ferritin (SF) and FEP/Hb ratio are sensitive indicators for detecting IDA during pregnancy.

    Area of Science:

    • Obstetrics and Gynecology
    • Hematology
    • Nutritional Science

    Background:

    • Iron deficiency anemia (IDA) is a common complication during pregnancy.
    • Maternal iron status can potentially influence fetal iron stores and infant health.
    • Accurate assessment of iron status in pregnant women is crucial for timely intervention.

    Purpose of the Study:

    • To evaluate various iron status biomarkers in pregnant women and their newborns.
    • To compare the iron nutrition status of infants born to mothers with and without IDA.
    • To identify sensitive indicators for detecting IDA in pregnancy and guide iron supplementation.

    Main Methods:

    • Assessed haemoglobin (Hb), free erythrocyte protoporphyrin (FEP), FEP/Hb ratio, serum ferritin (SF), packed red cell volume (PCV), serum iron (SI), total iron binding capacity (TIBC), and transferrin saturation (TS).
    • Stratified 170 pregnant women into normal and iron-deficient groups.
    • Compared iron status indicators in infants of mothers with and without IDA.

    Main Results:

    • Decreased PCV in late pregnancy correlated with IDA.
    • SF, FEP/Hb ratio, and Hb were more sensitive for detecting pregnancy-associated IDA.
    • Infants of mothers with IDA exhibited significantly higher FEP, FEP/Hb ratio, and Hb levels.
    • Maternal iron status showed no significant correlation with infant iron stores.

    Conclusions:

    • Specific biomarkers (SF, FEP/Hb, Hb) are effective in identifying IDA during pregnancy.
    • Infant iron status is influenced by maternal IDA, although direct correlation with maternal stores is weak.
    • Hb < 11 g/L, FEP/Hb > 4.5 µg/g, FEP > 0.92 µmol/L, or SF < 50 µg/L in early pregnancy indicate need for iron supplementation.

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