IRON STATUS, ERYTHROPOIETIN, HYPOXIA INDUCTOR FACTORS IN CHILDREN WITH ANEMIA WITH CHRONIC KIDNEY DISEASE

Abstract

Objective : to compare the indicators of iron metabolism, the level of hypoxia induced factor (HIF-1α) and erythropoietin (EPO) in children with anemia in CKD Stage 1-5. Patients and methods : three groups of patients: I – 32 children under dialysis with CKD Stage 1-5 without therapy, II – 18 children up to dialysis CKD Stage 2-5 receiving treatment with iron and ESP, group III – 30 dialysis patients with CKD Stage 3-5 receiving treatment with iron and ESP. Serum levels of EPO and HIF-1α was determined by solid-phase chemiluminescent enzyme-linked immunosorbent assay method (sandwich) using a test system Biomerica EPO ELISA kit to determine the level of HIF-1α, Cloud-Clone Corp. Results: In the I group, a statistically significant increase in the level of HIF-1α (0,089 ± 0,011ng / ml) was found compared with the mean normal (0,043 ng / ml) (p = 0.0001). In the II group, an increased level of EPO (63,01 ± 14,84 MIU / ml) was found in comparison with normal (17,56 MIU / ml) (p = 0,0088), an increase in HIF-1α (0,138 ± 0,025 ng / ml) compared with normal (0,043 ng / ml) (p = 0.005). A comparative study of EPO and HIF-1α in children with CKD showed a statistically significant increase in EPO and HIF-1α in the II group before dialysis (on therapy) compared to group I before dialysis (without therapy). A correlation between GFR and HIF-1α was established in group II patients. Conclusion: A direct correlation between the level of GFR and HIF-1α in the blood was revealed in patients of group II with CKD Stage 2-5 before dialysis, receiving preparations of erythropoietin and iron. In the I group, before dialysis (without therapy) and III group of dialysis patients receiving ESP and iron, the binding strength of GFR and HIF-1α is not significant.