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Ciencia básica y patogénesis

Paulina Tolosa Tort1, Meri Okorie2, Ana I Boeriu2

  • 1Department of Psychiatry and Behavioral Sciences, University of California - San Francisco, San Francisco, CA, USA.

Alzheimer's & dementia : the journal of the Alzheimer's Association
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Resumen
Este resumen es generado por máquina.

Los factores modificables del estilo de vida pueden alterar el riesgo genético de la enfermedad de Alzheimer (EA), influyendo en los resultados para el APOE y las puntuaciones de riesgo poligénico (PRS). La integración de estos factores es clave para la evaluación de riesgos personalizada de la EA.

Palabras clave:
enfermedad de AlzheimerAPOEpuntuación de riesgo poligénicofactores de riesgo modificablesevaluación de riesgos personalizada

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Área de la Ciencia:

  • Neurociencia
  • Genética
  • Epidemiología

Sus antecedentes:

  • La enfermedad de Alzheimer (EA) está influenciada por factores genéticos y ambientales.
  • El alelo APOE*ε4 es un importante factor de riesgo genético; las puntuaciones de riesgo poligénico (PRS) capturan una mayor carga de riesgo.
  • Las puntuaciones de riesgo clínico para la demencia (CRS) integran factores clínicos y de estilo de vida, pero se requiere investigar los efectos específicos de la población.

Objetivo del estudio:

  • Investigar si los perfiles de riesgo modificables moderan los efectos de APOE y AD-PRS sobre la EA y el deterioro cognitivo leve (MCI).
  • Evaluar estas interacciones en diversas poblaciones.

Principales métodos:

  • Se utilizaron datos de 20.755 participantes (NACC y ADNI).
  • Se construyó una puntuación modificada de Factores de Riesgo Cardiovascular, Envejecimiento e Incidencia de Demencia (mCAIDE).
  • Se generó un AD-PRS trans-ascendencia y se evaluaron las interacciones aditivas utilizando regresión logística, estratificadas por raza/etnia y ascendencia genética.

Principales resultados:

  • Un perfil mCAIDE favorable redujo el riesgo asociado con APOE*ε4 y el riesgo de un alto AD-PRS.
  • Un perfil mCAIDE desfavorable debilitó el efecto protector de APOE*ε2 y la protección del bajo AD-PRS.
  • Estas tendencias fueron más pronunciadas en los grupos de ascendencia europea y africana.

Conclusiones:

  • Los factores de riesgo modificables moderan significativamente el riesgo genético de la EA.
  • La integración de factores genéticos y ambientales es crucial para la evaluación personalizada del riesgo de EA.