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Regulation of erythropoietin production

Open access
Jelkmann, Wolfgang·2011·The Journal of Physiology

Abstract

The hormone erythropoietin (Epo) maintains red blood cell mass by promoting the survival, proliferation and differentiation of erythrocytic progenitors. Circulating Epo originates mainly from fibroblasts in the renal cortex. Epo production is controlled at the transcriptional level. Hypoxia attenuates the inhibition of the Epo promoter by GATA‐2. More importantly, hypoxia promotes the availability of heterodimeric (α/β) hypoxia‐inducible transcription factors (predominantly HIF‐2) which stimulate the Epo enhancer. The HIFs are inactivated in normoxia by enzymatic hydroxylation of their α‐subunits. Three HIF‐α prolyl hydroxylases (PHD‐1, ‐2 and ‐3) initiate proteasomal degradation of HIF‐α, while an asparaginyl hydroxylase (‘factor inhibiting HIF‐1’, FIH‐1) inhibits the transactivation potential. The HIF‐α hydroxylases contain Fe 2+ and require 2‐oxoglutarate as co‐factor. The in vivo response is dynamic, i.e. the concentration of circulating Epo increases initially greatly following an anaemic or hypoxaemic stimulus and then declines despite continued hypoxia. Epo and angiotensin II collaborate in the maintenance of the blood volume. Whether extra‐renal sites (brain, skin) modulate renal Epo production is a matter of debate. Epo overproduction results in erythrocytosis. Epo deficiency is the primary cause of the anaemia in chronic kidney disease and a contributing factor in the anaemias of chronic inflammation and cancer. Here, recombinant analogues can substitute for the hormone.

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Crossref · 10.1113/jphysiol.2010.195057

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Metadata

Authors
Jelkmann, W.
Venue
The Journal of Physiology
Publisher
Wiley
Published
2011-03-14
Volume
589
Issue
6
Pages
1251-1258
ISSN
  • 0022-3751 (ISSN-L)
  • 1469-7793
OpenAlex
W1515497590
Cited by
599
References
12
FWCI
11.67
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Regulation of erythropoietin production. https://app.cochat.ai/papers/10.1113/jphysiol.2010.195057
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Jelkmann, W. (2011). Regulation of erythropoietin production. The Journal of Physiology. https://doi.org/10.1113/jphysiol.2010.195057

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