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Delayed Hepcidin Response Explains the Lag Period in Iron Absorption Following a Stimulus to Increase Erythropoiesis

Overview
Journal Gut
Specialty Gastroenterology
Date 2004 Sep 14
PMID 15361505
Citations 33
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Abstract

Introduction: The delay of several days between an erythropoietic stimulus and the subsequent increase in intestinal iron absorption is commonly believed to represent the time required for body signals to programme the immature crypt enterocytes and for these cells to migrate to the villus. Recent data however suggest that signals from the body to alter absorption are mediated by circulating hepcidin and that this peptide exerts its effect on mature villus enterocytes.

Methods: We have examined the delay in the absorptive response following stimulated erythropoiesis using phenylhydrazine induced haemolysis and correlated this with expression of hepcidin in the liver and iron transporters in the duodenum.

Results: There was a delay of four days following haemolysis before a significant increase in iron absorption was observed. Hepatic hepcidin expression did not decrease until day 3, reaching almost undetectable levels by days 4 and 5. This coincided with the increase in duodenal expression of divalent metal transporter 1, duodenal cytochrome b, and Ireg1.

Conclusion: These results suggest that the delayed increase in iron absorption following stimulated erythropoiesis is attributable to a lag in the hepcidin response rather than crypt programming, and are consistent with a direct effect of the hepcidin pathway on mature villus enterocytes.

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Circulating iron levels influence the regulation of hepcidin following stimulated erythropoiesis.

Mirciov C, Wilkins S, Hung G, Helman S, Anderson G, Frazer D Haematologica. 2018; 103(10):1616-1626.

PMID: 29903760 PMC: 6165793. DOI: 10.3324/haematol.2017.187245.


References
1.
McKie A, Barrow D, Latunde-Dada G, Rolfs A, Sager G, Mudaly E . An iron-regulated ferric reductase associated with the absorption of dietary iron. Science. 2001; 291(5509):1755-9. DOI: 10.1126/science.1057206. View

2.
Nicolas G, Chauvet C, Viatte L, Danan J, Bigard X, Devaux I . The gene encoding the iron regulatory peptide hepcidin is regulated by anemia, hypoxia, and inflammation. J Clin Invest. 2002; 110(7):1037-44. PMC: 151151. DOI: 10.1172/JCI15686. View

3.
Wang X, Ong W, Connor J . Increase in ferric and ferrous iron in the rat hippocampus with time after kainate-induced excitotoxic injury. Exp Brain Res. 2002; 143(2):137-48. DOI: 10.1007/s00221-001-0971-y. View

4.
Anderson G, Frazer D, Wilkins S, Becker E, Millard K, MURPHY T . Relationship between intestinal iron-transporter expression, hepatic hepcidin levels and the control of iron absorption. Biochem Soc Trans. 2002; 30(4):724-6. DOI: 10.1042/bst0300724. View

5.
Enns C, Shindelman J, Tonik S, SUSSMAN H . Radioimmunochemical measurement of the transferrin receptor in human trophoblast and reticulocyte membranes with a specific anti-receptor antibody. Proc Natl Acad Sci U S A. 1981; 78(7):4222-5. PMC: 319761. DOI: 10.1073/pnas.78.7.4222. View