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Background: Hepcidin is the master regulator of iron homeostasis but until now, data about its expression in acute lymphoblastic leukemia (ALL) is scarce. Objectives: To evaluate hepcidin level in a group of ALL children in different treatment phases, investigating its relation to serum ferritin and erythroid activity. Materials and Methods: Forty ALL children were included and categorized into; Group I: Included 20 newly diagnosed ALL children who were evaluated at diagnosis and after remission. Group II: Included 20 ALL children in the maintenance phase of therapy. Twenty age and gender matched healthy children were enrolled as a control group. Complete blood count including reticulocytes %, liver functions, renal functions, and C-reactive protein were assayed. Serum hepcidin and ferritin were measured by enzyme-linked immunosorbent assay. Results: Serum hepcidin and ferritin levels were significantly higher among both ALL groups compared to the controls. These values were higher before therapy than after remission in the newly diagnosed group as well as than the maintenance group. Before therapy, both serum hepcidin and ferritin levels had significant negative correlation with hemoglobin and reticulocytes % while directly correlated with each other. Conclusion: Hepcidin level increased in ALL children at diagnosis and in different treatment phases. The highest rise was at diagnosis. These results indicate that hepcidin level among ALL patients is under the opposing effects of the iron stores and erythroid activity with the net level is determined by the strength of each stimulus.
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