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Videos de Conceptos Relacionados

Blood Transfusion01:15

Blood Transfusion

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Blood transfusion is a critical medical procedure that saves lives and treats various medical conditions. It involves transferring blood from a donor to a recipient. This process requires a thorough understanding of the ABO blood group system and its associated antigens and antibodies.
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A blood transfusion is a medical procedure used to replace blood lost due to injury, surgery, or to treat conditions such as anemia or cancer. During a transfusion, donor blood is...
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Blood Transfusion and Agglutination02:45

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Blood transfusion is a therapeutic measure to restore the blood volume after extensive blood loss due to an accident or a medical procedure. Blood transfusion involves drawing a certain amount of blood from a suitable donor and infusing it into the recipient.
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The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
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Structure and Function of Platelets01:18

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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.
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Formation of the Platelet Plug01:22

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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.
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Video Experimental Relacionado

Updated: Feb 7, 2026

Routine Screening Method for Microparticles in Platelet Transfusions
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Routine Screening Method for Microparticles in Platelet Transfusions

Published on: January 31, 2018

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La remoción de las plaquetas para la transfusión

Camelia Iancu-Rubin1, Ronald Hoffman1, Anna Rita Migliaccio2

  • 1Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, USA.

Cell
|July 28, 2018
PubMed
Resumen

Los investigadores descubrieron que la turbulencia regula la producción de plaquetas in vivo. Este hallazgo puede utilizarse en biorreactores para la producción clínica a gran escala de plaquetas funcionales a partir de células madre pluripotentes inducidas humanas (iPSC).

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Área de la Ciencia:

  • Biotecnología
  • Hematología
  • La Medicina Regenerativa

Sus antecedentes:

  • Las transfusiones de plaquetas son cruciales para el tratamiento de diversas enfermedades.
  • El suministro actual de plaquetas depende en gran medida de los donantes humanos, lo que plantea desafíos para satisfacer la creciente demanda.
  • Se necesita una producción de plaquetas ex vivo a gran escala para garantizar un suministro suficiente y fiable.

Objetivo del estudio:

  • Investigar los reguladores físicos de la generación de plaquetas in vivo.
  • Explorar el potencial de la explotación de estos reguladores para la producción de plaquetas a escala clínica.
  • Desarrollar un método para generar plaquetas funcionales a partir de células madre pluripotentes inducidas humanas (iPSC).

Principales métodos:

  • Investigó el papel de las fuerzas físicas, específicamente la turbulencia, en la megacariopoiesis y la liberación de plaquetas in vivo.
  • Desarrolló un sistema de biorreactor diseñado para imitar la turbulencia fisiológica.
  • Se utilizaron células madre pluripotentes inducidas humanas (iPSC) como material de partida para la generación de plaquetas.

Principales resultados:

  • Se identificó la turbulencia como un regulador físico clave de la formación de plaquetas in vivo.
  • Se demostró que la turbulencia controlada en un biorreactor promueve la generación eficiente de plaquetas de las células iPSC.
  • Producción de plaquetas funcionales en una escala adecuada para aplicaciones clínicas.

Conclusiones:

  • La turbulencia es un factor crítico en la producción natural de plaquetas.
  • La producción basada en biorreactores que aprovecha la turbulencia ofrece una estrategia prometedora para satisfacer la demanda de plaquetas transfusionables.
  • Este enfoque podría reducir la dependencia del cribado de donantes y mejorar la disponibilidad de plaquetas para los pacientes.