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Determination of iron absorption from intrinsically labeled microencapsulated ferrous fumarate (sprinkles) in infants with 'low' versus 'high' hemoglobin using a dual stable isotope method

Posted on:2004-12-22Degree:M.ScType:Thesis
University:University of Toronto (Canada)Candidate:Tondeur, Melody ChristinaFull Text:PDF
GTID:2461390011968713Subject:Health Sciences
Abstract/Summary:
Microencapsulated ferrous fumarate plus vitamins A and C (Sprinkles) in powder form is a new approach for ‘home-fortification’ of complementary foods. To determine iron (Fe) absorption from Sprinkles, 44 infants with hemoglobin concentration (Hb) < 100g/L/L and 46 with Hb ≥ 100g/L were randomized to receive 30 or 45 mg of elemental Fe as 57Fe-labeled Sprinkles on 3 consecutive days. Additionally, a 58Fe tracer (0.2 mg as ferrous citrate) was infused intravenously (n = 46). Blood was drawn at baseline and 14 days later. Geometric mean Fe absorption was 8.7 and 7.0% in infants with Hb < 100g/L, and 4.6 and 4.5% in infants with Hb ≥ 100g/L for the 30 and 45 mg doses, respectively. Percent Fe absorption was significantly higher in infants with Hb <100g/L as compared to infants with Hb ≥ 100g/L (p < 0.0001), however there was no significant effect of dose (p = 0.35). Fe absorption from Sprinkles is regulated according to Fe needs.
Keywords/Search Tags:Sprinkles, Absorption, Infants, Ferrous
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