Erythropoiesis-independent effects of iron in chronic kidney disease

Area of Science:

• Nephrology
• Hematology
• Biochemistry

Background:

• Chronic kidney disease (CKD) is associated with disturbed iron metabolism.
• Elevated hepcidin levels in CKD patients cause significant iron redistribution.
• Anemia is a common complication of CKD, often requiring iron supplementation.

Purpose of the Study:

• To review the pleiotropic effects of iron supplementation in CKD.
• To explore the impact of iron on various organ systems beyond hematologic effects.
• To discuss novel applications of iron therapy in CKD management.

Main Methods:

• Literature review of recent data on iron metabolism and supplementation in CKD.
• Analysis of the effects of iron on inflammation, oxidative stress, fibrosis, cardiovascular disease, and bone and mineral disorders.
• Examination of iron-based phosphate binders as a dual-indication therapy.

Main Results:

• Iron supplementation in CKD has effects beyond anemia, influencing inflammation, oxidative stress, kidney fibrosis, cardiovascular health, and bone-mineral disorders.
• The route of administration and specific iron preparation significantly impact these effects.
• Iron-based phosphate binders offer a novel approach for treating both anemia and hyperphosphatemia.

Conclusions:

• Optimizing iron therapy in CKD can lead to new strategies for managing complications.
• Iron supplementation may play a role in modifying CKD progression.
• Further research into iron's multifaceted roles is crucial for advancing CKD care.