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Related Concept Videos

Structure and Function of Platelets01:18

Structure and Function of Platelets

The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000 platelets, with...
Formation of the Platelet Plug01:22

Formation of the Platelet Plug

The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
Stem Cell Therapy for Tissue Regeneration01:21

Stem Cell Therapy for Tissue Regeneration

Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
The two main cell types that...

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Related Experiment Video

Updated: Jul 6, 2026

Megakaryocyte Differentiation and Platelet Formation from Human Cord Blood-derived CD34+ Cells
09:46

Megakaryocyte Differentiation and Platelet Formation from Human Cord Blood-derived CD34+ Cells

Published on: December 27, 2017

Platelets in regenerative medicine.

Harald F Langer1, Meinrad Gawaz

  • 1Medizinische Klinik III, Klinik für Kardiologie und Kreislauferkrankungen, Eberhard Karls-Universität Tübingen, 72076, Tübingen, Germany. harald.langer@med.uni-tuebingen.de

Basic Research in Cardiology
|April 9, 2008
PubMed
Summary
This summary is machine-generated.

Platelets are key regenerative cells that influence progenitor cell behavior and tissue repair. This review explores their multifaceted roles in regeneration and potential adverse effects.

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Microfluidic Flow Chambers Using Reconstituted Blood to Model Hemostasis and Platelet Transfusion In Vitro
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Microfluidic Flow Chambers Using Reconstituted Blood to Model Hemostasis and Platelet Transfusion In Vitro

Published on: March 19, 2016

Related Experiment Videos

Last Updated: Jul 6, 2026

Megakaryocyte Differentiation and Platelet Formation from Human Cord Blood-derived CD34+ Cells
09:46

Megakaryocyte Differentiation and Platelet Formation from Human Cord Blood-derived CD34+ Cells

Published on: December 27, 2017

Microfluidic Flow Chambers Using Reconstituted Blood to Model Hemostasis and Platelet Transfusion In Vitro
10:25

Microfluidic Flow Chambers Using Reconstituted Blood to Model Hemostasis and Platelet Transfusion In Vitro

Published on: March 19, 2016

Area of Science:

  • Regenerative Medicine
  • Cell Biology
  • Tissue Engineering

Background:

  • Stem and progenitor cells are central to regenerative medicine.
  • Platelets, previously overlooked, significantly influence progenitor cell biology.
  • Platelets act as both regenerative cells and modulators of progenitor cell functions.

Purpose of the Study:

  • To review the role of platelets in regenerative medicine.
  • To highlight platelets as regenerative cells and modulators of progenitor cell biology.
  • To discuss the impact of platelets on tissue regeneration.

Main Methods:

  • Literature review of recent findings on platelets and progenitor cells.
  • Analysis of platelet interactions with progenitor cell chemotaxis, migration, and differentiation.
  • Examination of platelet roles in organ regeneration and clinical applications.

Main Results:

  • Platelets recruit and modulate circulating progenitor cells.
  • Platelets are crucial for parenchymatous organ regeneration (e.g., liver).
  • Platelets are used clinically for connective and bone tissue restoration, but can also induce inflammation.

Conclusions:

  • Platelets are significant effector cells in tissue regeneration.
  • Platelet interactions with progenitor cells are critical for regenerative processes.
  • Further research is needed to fully understand the therapeutic potential and risks of platelets in regeneration.