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Related Concept Videos

Erythropoiesis01:14

Erythropoiesis

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Red blood cells  (RBCs) transport oxygen to all body tissues. These cells survive only for 120 days and then need to be replenished. Erythropoiesis is the process of RBC production. In healthy individuals, erythropoiesis ensures all tissues are amply supplied with oxygen. In addition, blood loss due to injury leads to a drop in the physiological oxygen level that will cause erythropoiesis. Any defect in erythropoiesis leads to several physiological disorders, including thalassemia, anemia,...
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Erythropoiesis01:14

Erythropoiesis

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Role of Hematopoietic Growth Factors01:28

Role of Hematopoietic Growth Factors

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Hematopoietic growth factors are molecules that regulate the differentiation rate of hematopoietic stem cells (HSCs). Erythropoietin (EPO), primarily produced by the kidneys, plays a crucial role in erythrocyte production. When oxygen levels in the blood are low, EPO is released into the bloodstream, reaching the bone marrow, where it stimulates HSCs to differentiate and mature into erythrocytes, which are vital for oxygen transport.
Thrombopoietin (TPO), mainly released by the liver,...
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Factors Affecting Erythropoiesis01:24

Factors Affecting Erythropoiesis

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The cardiovascular system regulates the number of erythrocytes in the bloodstream to ensure optimal oxygen transport. It also prevents over-proliferation of these cells, which helps to maintain blood viscosity and flow rate.
Several factors influence the erythrocyte production rate, with tissue oxygen level being among the most critical. Intense exercise or high altitudes can cause tissue hypoxia, which triggers the kidneys to release more erythropoietin (EPO) into the bloodstream.
EPO then...
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Hormonal Regulation of Blood Pressure01:17

Hormonal Regulation of Blood Pressure

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Endocrinal or hormonal intervention in the cardiovascular system is predominantly exerted by the catecholamines - epinephrine and norepinephrine, as well as a slew of hormones that interact with renal function to modulate blood volume.
Epinephrine and Norepinephrine
The adrenal medulla releases epinephrine and norepinephrine, catecholamines that enhance and extend the sympathetic or "fight or flight" physiological response. These hormones escalate heart rate and the force of contraction...
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Hematopoiesis01:21

Hematopoiesis

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The process of blood cell formation is called hematopoiesis. Hematopoiesis starts early during development, on the seventh day of embryogenesis. This phase of hematopoiesis is called the primitive wave, wherein the extraembryonic yolk sac allows the production of erythroid cells and endothelial cells from a common precursor called hemangioblast. The erythroid cells provide oxygen to support the growth of the rapidly dividing embryo. Hemangioblasts later develop into hematopoietic stem cells or...
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Related Experiment Video

Updated: Mar 18, 2026

Author Spotlight: Advancing Erythropoiesis Research - A Simplified Pipeline for Assessing Hematopoietic Stem Cell Function in Myelodysplastic Syndromes
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Author Spotlight: Advancing Erythropoiesis Research - A Simplified Pipeline for Assessing Hematopoietic Stem Cell Function in Myelodysplastic Syndromes

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Erythropoietin.

Wolfgang Jelkmann1

  • 1Institute of Physiology, University of Lübeck, Lübeck, Germany.

Frontiers of Hormone Research
|June 28, 2016
PubMed
Summary
This summary is machine-generated.

Athletes may misuse erythropoiesis-stimulating agents to boost aerobic power. Detecting these performance-enhancing drugs is challenging due to new substances and monitoring methods like the Athlete Biological Passport.

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Lentiviral-mediated Knockdown During Ex Vivo Erythropoiesis of Human Hematopoietic Stem Cells
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Mouse Fetal Liver Culture System to Dissect Target Gene Functions at the Early and Late Stages of Terminal Erythropoiesis
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Mouse Fetal Liver Culture System to Dissect Target Gene Functions at the Early and Late Stages of Terminal Erythropoiesis
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Area of Science:

  • Sports Science
  • Biochemistry
  • Anti-Doping Research

Background:

  • Erythropoietin (Epo) regulates red blood cell production, impacting aerobic capacity.
  • Performance-enhancing drugs mimicking Epo are used by athletes to increase hemoglobin mass.
  • Detecting these substances is crucial for fair competition.

Purpose of the Study:

  • To review the regulation of erythropoiesis.
  • To discuss methods for manipulating erythropoiesis.
  • To highlight challenges and strategies in anti-doping efforts.

Main Methods:

  • Review of scientific literature on erythropoiesis regulation and Epo.
  • Analysis of detection methods for recombinant human Epo (rhEpo) and analogues.
  • Discussion of emerging doping agents and detection challenges.
  • Explanation of the Athlete Biological Passport (ABP) system.

Main Results:

  • Various forms of Epo and related drugs can be misused to enhance athletic performance.
  • Detection of synthetic Epo is possible due to differing glycan structures.
  • New agents like Epo mimetics and HIF stabilizers complicate anti-doping efforts.
  • The ABP provides continuous monitoring of athlete biological parameters.

Conclusions:

  • Anti-doping strategies must evolve to counter new erythropoiesis-stimulating agents.
  • The ABP is a key tool for detecting non-physiological changes indicative of blood doping.
  • Continuous monitoring of hemoglobin and reticulocyte parameters is vital for integrity in sports.