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Urinary Iron Loss and Physical Fitness of Kenyan Children with Urinary Schistosomiasis
Lani S. Stephenson
Lani S. Stephenson
Division of Nutritional Sciences, Cornell University, Ithaca, New York 14853, USA
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Michael C. Latham
Michael C. Latham
Division of Nutritional Sciences, Cornell University, Ithaca, New York 14853, USA
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Kathleen M. Kurz
Kathleen M. Kurz
Division of Nutritional Sciences, Cornell University, Ithaca, New York 14853, USA
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Dennis Miller
Dennis Miller
Department of Food Science, Cornell University, Ithaca, New York 14853, USA
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Stephen N. Kinoti
Stephen N. Kinoti
Medical Research Center, a Department of the Kenya Medical Research Institute, P.O. Box 20752, Nairobi, Kenya
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Martin L. Oduori
Martin L. Oduori
Ministry of Health, P.O. Box 30016, Nairobi, Kenya
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Daily urinary iron loss and physical fitness were determined in Kenyan primary school children who had low-medium (16–177 eggs/10 ml adj) or high (200–1, 194 eggs/10 ml adj) S. hematobium egg counts compared with a matched group of control or uninfected children before and after antischistosomal treatment with metrifonate. The 3 groups did not differ significantly before treatment in age, sex ratio, anthropometry or prevalence of other parasite infections. Before treatment, mean iron loss in the high egg count group (n = 14) was 652 µg/24 hr and was significantly higher than losses in the low-medium and control groups (losses = 278, 149 µg; n = 19, 12 respectively). Iron loss in infected children was correlated with egg count (r = 0.40) and log of egg count (r = 0.56, P < 0.0003). After treatment iron loss decreased in the infected groups and post-treatment iron losses did not differ significantly. Physical fitness scores, measured with the Harvard Step Test, showed that the control group (score 81) was significantly more fit than the high egg count group (score 69) before treatment. Fitness scores improved significantly in both infected groups after treatment, and post-treatment fitness scores did not differ significantly between the 3 groups. This study provides evidence that relatively heavy infections of S. hematobium can cause urinary iron loss which, if it persists, is great enough to produce iron deficiency anemia and can also reduce physical fitness of children, but that both of these negative effects are reversible with treatment.
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| Past two years | Past Year | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 1323 | 662 | 45 |
| Full Text Views | 11 | 3 | 0 |
| PDF Downloads | 14 | 4 | 0 |