Physiological iron transport and utilization system

The physiological iron transport and utilization system is a complex network of proteins and pathways responsible for maintaining iron homeostasis, which is essential for erythropoiesis, DNA synthesis, and cellular respiration. Key components include transferrin for plasma transport, the transferrin receptor for cellular uptake, ferritin for intracellular storage, and ferroportin for cellular export. The system is tightly regulated by the hormone hepcidin, which controls iron entry into the plasma from the diet and storage sites. Dysregulation of this system leads to significant clinical conditions, such as iron deficiency anemia or iron overload disorders like hereditary hemochromatosis. Pharmacological interventions include iron salts for deficiency, iron chelators for overload, and emerging hepcidin mimetics or inhibitors to treat disorders of iron distribution.

Other names

Iron homeostasis systemSystemic iron metabolismIron transport pathwayIron trafficking and storage system

Drugs targeting this system act by supplementing elemental iron, chelating excess iron to prevent toxicity, or modulating regulatory hormones like hepcidin to control iron absorption and distribution.