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Iron incorporation and post-malaria anaemia
Conor P Doherty1, Sharon E Cox, Antony J Fulford
1Nutrition Program, Keneba Field Station, Medical Research Council, Fajara, The Gambia. conor.doherty@yorkhill.scot.nhs.uk
Children with post-malarial anemia show better hemoglobin recovery despite reduced oral iron absorption. Iron supplementation may be less effective within two weeks of malaria in children with mild to moderate anemia.
Area of Science:
- Hematology
- Nutritional Science
- Tropical Medicine
Background:
- Iron deficiency anemia is prevalent in malaria-endemic regions.
- Malaria-induced inflammation impairs iron recycling and oral iron absorption.
- The extent and duration of these effects on iron metabolism post-malaria are not well understood.
Purpose of the Study:
- To investigate iron incorporation and hemoglobin recovery in children with post-malarial anemia compared to iron deficiency anemia.
- To assess the efficacy of oral iron supplementation in these pediatric populations.
Main Methods:
- Stable iron isotopes ((57)Fe and (58)Fe) were administered orally to children aged 18-36 months over 30 days.
- Iron incorporation into red blood cells was measured using isotopes.
- Hemoglobin levels were monitored at days 15 and 30 of supplementation.
Main Results:
- Oral iron incorporation was significantly reduced in children with post-malarial anemia (8% vs. 28% for (57)Fe; 14% vs. 26% for (58)Fe).
- Children with post-malarial anemia exhibited a significantly greater hemoglobin response at both day 15 and day 30.
- Estimated hemoglobin increase was 7.2 g/l and 10.1 g/l greater in the malaria group at days 15 and 30, respectively.
Conclusions:
- Post-malarial anemia is linked to improved hemoglobin recovery, possibly due to efficient iron recycling.
- Oral iron incorporation is significantly impaired following malaria.
- Iron supplementation may have limited benefit within two weeks of malaria in children with mild to moderate anemia.
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