Related Experiment Video

Updated: Aug 15, 2026

Identification and Analysis of Mouse Erythroid Progenitors using the CD71/TER119 Flow-cytometric Assay
15:32

Identification and Analysis of Mouse Erythroid Progenitors using the CD71/TER119 Flow-cytometric Assay

Published on: August 5, 2011

Elevated blood lead levels in children are associated with lower erythropoietin concentrations

E L Liebelt1, D J Schonfeld, P Gallagher

  • 1Department of Pediatrics and The Children's Clinical Research Center, Yale University School of Medicine; New Haven, Connecticut, USA.

The Journal of Pediatrics
|January 8, 1999
PubMed

Insights

Elevated blood lead levels in children are linked to lower erythropoietin (EPO) concentrations. This study found an inverse relationship between blood lead and EPO levels in young children.

Area of Science:

  • Pediatric Health
  • Toxicology
  • Hematology

Background:

  • Lead exposure is a significant public health concern for children.
  • Erythropoietin (EPO) is a hormone crucial for red blood cell production.
  • Previous research suggests lead may affect the hematopoietic system.

Purpose of the Study:

  • To investigate the association between blood lead levels and serum erythropoietin concentrations in children.
  • To determine if elevated lead exposure correlates with reduced EPO levels.

Main Methods:

  • Study included eighty-six children with a mean age of 34 months.
  • Blood lead levels were measured and correlated with erythropoietin concentrations.
  • Statistical analysis was performed to assess the independent relationship between variables.

Main Results:

  • The median blood lead level was 0.87 micromol/L (18 microg/dL).
  • The median erythropoietin concentration was 5.9 mIU/mL.
  • A significant inverse and independent relationship was observed between blood lead concentration and erythropoietin concentration.

Conclusions:

  • Elevated blood lead levels in children are associated with lower erythropoietin concentrations.
  • This finding suggests a potential mechanism by which lead exposure may impact red blood cell production.
  • Further research is warranted to explore the clinical implications of this association.

More Related Videos

Mouse Fetal Liver Culture System to Dissect Target Gene Functions at the Early and Late Stages of Terminal Erythropoiesis06:40

Mouse Fetal Liver Culture System to Dissect Target Gene Functions at the Early and Late Stages of Terminal Erythropoiesis

Published on: September 9, 2014

A Comprehensive Pipeline to Assess the Efficiency of Human Erythropoiesis In Vitro and Ex Vivo08:53

A Comprehensive Pipeline to Assess the Efficiency of Human Erythropoiesis In Vitro and Ex Vivo

Published on: January 10, 2025

Related Concept Videos

Erythropoiesis01:14

Erythropoiesis

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, and...
Overview of Hematopoiesis01:20

Overview of Hematopoiesis

Hematopoiesis, or blood cell production, is a vital biological process that begins early in embryonic development and continues throughout life. This process generates the various types of cells found in blood, including red blood cells, white blood cells, and platelets from hematopoietic stem cells (HSCs).
Developmental Phases of Hematopoiesis
Initially, HSCs are formed in the embryonic yolk sac, a critical site for early blood cell production. These stem cells subsequently migrate to other...
Role of Hematopoietic Growth Factors01:28

Role of Hematopoietic Growth Factors

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,...
Erythropoiesis01:14

Erythropoiesis

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, and...
Disorders of Erythrocytes01:27

Disorders of Erythrocytes

Disorders of erythrocytes, or red blood cells (RBCs), include a range of conditions affecting their number, shape, or function.
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
On the other...
Factors Affecting Erythropoiesis01:24

Factors Affecting Erythropoiesis

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...