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Measurement of the Hepatic Venous Pressure Gradient and Transjugular Liver Biopsy
Published on: June 18, 2020
Hepcidin level predicts hemoglobin concentration in individuals undergoing repeated phlebotomy
Alan E Mast1, Karen S Schlumpf, David J Wright
1Blood Research Institute, Blood Center of Wisconsin, Milwaukee, WI, USA. alan.mast@bcw.edu
Haematologica
|March 1, 2013
Summary
Hepcidin, a key iron regulator, changes rapidly to meet erythropoiesis demands. Dynamic hepcidin levels in low ferritin individuals offer insights into iron status and blood donation tolerance.
Area of Science:
- Hematology
- Iron Metabolism
- Clinical Biochemistry
Background:
- Dietary iron absorption is primarily regulated by hepcidin, an iron regulatory hormone produced by the liver.
- Hepcidin production is influenced by iron stores, erythropoiesis, and inflammation.
- The physiological role of hepcidin during repeated blood loss has not been fully characterized.
Purpose of the Study:
- To investigate hepcidin dynamics in response to repeated phlebotomy in blood donors.
- To compare hepcidin levels with ferritin and hemoglobin in relation to donation frequency.
- To assess the utility of hepcidin as an indicator of iron status and tolerance to blood donation.
Main Methods:
- Plasma hepcidin, ferritin, and hemoglobin levels were measured in 114 first-time/reactivated and 34 frequent female blood donors.
- Donors underwent phlebotomy at least 4 times over 18-24 months.
- Multivariable repeated measures regression models were used to analyze the relationships between hepcidin, ferritin, and hemoglobin.
Main Results:
- Hepcidin, ferritin, and hemoglobin levels decreased with increasing donation frequency in first-time/reactivated female donors.
- Hepcidin and ferritin levels showed a strong correlation (Spearman's correlation = 0.74).
- Hemoglobin decline between donations was predicted by hepcidin and ferritin levels, with lower hemoglobin in subjects with low or decreasing hepcidin and low ferritin.
Conclusions:
- Hepcidin levels exhibit rapid dynamic regulation in response to iron demands for erythropoiesis.
- Dynamic hepcidin regulation, especially in the context of low ferritin, may offer superior clinical information on iron status compared to ferritin alone.
- Plasma hepcidin concentration could be a valuable tool for assessing an individual's capacity to tolerate repeated blood donations.
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