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Related Concept Videos

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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Overview of Hematopoiesis01:20

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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...
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Regulation of Hematopoietic Stem Cells01:01

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All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
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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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Automated Quantification of Hematopoietic Cell &#8211; Stromal Cell Interactions in Histological Images of Undecalcified Bone
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Hematopoiesis in numbers.

Jason Cosgrove1, Lucie S P Hustin1, Rob J de Boer2

  • 1Institut Curie, Université PSL, Sorbonne Université, CNRS UMR168, Laboratoire Physico Chimie Curie, Paris, France.

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Summary
This summary is machine-generated.

This study quantifies hematopoiesis, providing reference values for cell numbers and rates. A quantitative approach helps consolidate data and generate new hypotheses in blood cell development.

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Immunology

Background:

  • Hematopoiesis is the complex process of blood and immune cell formation from stem cells.
  • Understanding the quantitative aspects of hematopoiesis is crucial for consolidating data and generating hypotheses.

Purpose of the Study:

  • To review and consolidate known quantitative data for murine and human hematopoiesis.
  • To establish reference values for cell numbers, division and differentiation rates, cell size, and macromolecular composition.
  • To propose guidelines for improved quantitative reporting in hematopoiesis research.

Main Methods:

  • Literature review of existing quantitative data on hematopoiesis in murine and human models.
  • Consolidation of murine data into a set of reference values.
  • Estimation of key quantitative parameters for each hematopoietic cell type.

Main Results:

  • Compilation of estimates for cell numbers, division/differentiation rates, cell size, and macromolecular composition.
  • Identification of areas lacking sufficient quantitative data.
  • Establishment of reference values for murine hematopoiesis.

Conclusions:

  • Quantitative descriptions of hematopoiesis are valuable for data consolidation, knowledge gap identification, and hypothesis generation.
  • This work provides a quantitative framework for understanding blood cell development.
  • Standardized reporting of quantitative measurements is needed to advance the field.