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Atherosclerosis is a progressive disorder characterized by the buildup of plaques on the arterial inner wall, causing them to narrow and harden over time. These plaques comprise lipids, calcium, blood components, carbohydrates, and fibrous tissue. The process primarily affects the intima of large and medium-sized arteries, reducing blood flow in any artery.Etiology and risk factorsThe cause of atherosclerosis is multifactorial, involving a complex interplay among endothelial injury, lipid...
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Un círculo vicioso en la aterosclerosis

Aldons J Lusis1

  • 1Departments of Medicine, Microbiology and Human Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA.

Cell
|March 5, 2021
PubMed
Resumen
Este resumen es generado por máquina.

La hematopoyesis clonal, la expansión de los clones de células sanguíneas, aumenta significativamente el riesgo de enfermedad cardíaca. La aterosclerosis, una condición que causa arterias endurecidas, parece impulsar esta expansión estimulando el crecimiento de las células madre.

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Área de la Ciencia:

  • Ciencias cardiovasculares
  • Hematología
  • La genética

Sus antecedentes:

  • La hematopoyesis clonal (CH), la presencia de clones de células sanguíneas somáticas expandidas, está relacionada con un riesgo duplicado de enfermedad coronaria (CHD).
  • Los mecanismos subyacentes que conectan CH con la enfermedad cardiovascular (ECV) siguen siendo incompletamente entendidos.

Objetivo del estudio:

  • Investigar la relación entre la aterosclerosis y el desarrollo de la hematopoyesis clonal.
  • Esclarecer el papel de la proliferación de células madre en la mediación del vínculo entre la aterosclerosis y la EH.

Principales métodos:

  • Utilizó un modelo de ratón para estudiar los efectos de la aterosclerosis en las células madre hematopoyéticas.
  • Se empleó la secuenciación genética y el rastreo de linaje para identificar y cuantificar los clones expandidos.

Principales resultados:

  • Se encontró que la aterosclerosis aumentaba significativamente la proliferación de células madre en la médula ósea.
  • Este aumento de la proliferación contribuyó directamente a la expansión de los clones de células sanguíneas somáticas, característica de la EH.
  • El estudio proporciona evidencia directa que vincula una afección cardiovascular común con un factor clave de la EH.

Conclusiones:

  • La aterosclerosis es un estímulo significativo para la proliferación de células madre, impulsando el desarrollo de la hematopoyesis clonal.
  • La comprensión de este vínculo puede ofrecer nuevos objetivos terapéuticos para la prevención de eventos cardiovasculares en personas con EH.