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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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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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The hematopoietic stem cells or HSCs are multipotent, meaning they can differentiate and give rise to all blood and immune cells. HSCs are maintained in the quiescent stage until an external stimulus initiates their differentiation. The multipotent HSCs exist as two heterogeneous populations, long-term repopulating cells (LTRC) and short-term repopulating cells (STRC). The two HSC populations have different surface markers or receptors and are classified based on quiescence and long-term...
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Production of Formed Elements01:34

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Hemangioblasts are multipotent stem cells originating from the mesoderm. They give rise to hematopoietic stem cells (HSCs), which undergo hematopoiesis to produce all the formed elements of blood. This process is regulated by a complex network of hematopoietic growth factors, including transcription factors, growth factors, and cytokines. These factors stimulate the HSCs to divide and differentiate, though some HSCs remain undifferentiated to maintain a self-renewing pool.
Most HSCs commit to...
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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
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Disorders of Hemostasis01:24

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Hemostasis, the process that stops bleeding after a blood vessel injury, is crucial for maintaining the integrity of the circulatory system. However, disorders of hemostasis can disrupt this delicate balance, leading to either excessive clotting or bleeding. These disorders can be broadly classified into thromboembolic disorders and bleeding disorders.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
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Updated: May 15, 2025

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Clonal Hematopoiesis and Thrombosis.

Cornelia Englisch1, Cihan Ay1

  • 1Division of Hematology and Hemostaseology, Department of Medicine I, Medical University of Vienna, Vienna, Austria.

American Journal of Hematology
|April 7, 2025
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Summary

Clonal hematopoiesis (CH) is linked to cardiovascular events, impacting both arterial and venous systems. Research is exploring how specific gene mutations in CH influence thrombosis risk.

Keywords:
clonal hematopoiesisriskthrombosis

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Area of Science:

  • Hematology
  • Cardiovascular Medicine
  • Genetics

Background:

  • Clonal hematopoiesis (CH) is increasingly recognized as a risk factor for cardiovascular disease.
  • While its association with arterial diseases is well-established, the link with venous thrombosis is a recent area of investigation.

Purpose of the Study:

  • To review the current evidence connecting clonal hematopoiesis with thrombosis.
  • To highlight knowledge gaps and future research directions in this field.

Main Methods:

  • Literature review of clinical and preclinical studies.
  • Synthesis of evidence on the association between CH and cardiovascular events, including arterial and venous thrombosis.

Main Results:

  • Evidence suggests CH is causally linked to thrombosis in both arterial and venous systems.
  • The specific gene mutations involved in CH influence the mechanisms and magnitude of cardiovascular risk.

Conclusions:

  • CH plays a significant role in thrombosis development, affecting both arterial and venous systems.
  • Further research is needed to fully elucidate the mechanisms and clinical implications of CH in thrombosis.