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Manifestaciones Clínicas

Yonatan M Schwartz1, Michal S Beeri2, Sharon Naparstek1

  • 1Bar-Ilan University, Ramat Gan, Israel.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
PubMed
Resumen
Este resumen es generado por máquina.

La reserva cognitiva (RC) mejora la función cognitiva y retrasa el deterioro, pero no frena la progresión de la enfermedad. Una RC más alta predice un deterioro cognitivo más rápido una vez que comienza el deterioro, lo que resalta la necesidad de intervenciones tempranas.

Palabras clave:
Reserva CognitivaDeterioro CognitivoEnfermedad de AlzheimerNeuropsicologíaIntervenciones Tempranas

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Área de la Ciencia:

  • Neurociencia
  • Psicología Cognitiva
  • Gerontología

Sus antecedentes:

  • La teoría de la Reserva Cognitiva (RC) sugiere que el enriquecimiento intelectual mejora la eficiencia cerebral, retrasando el deterioro cognitivo.
  • La RC puede no frenar la progresión de la enfermedad, lo que podría conducir a un deterioro acelerado después del inicio del deterioro.

Objetivo del estudio:

  • Examinar el impacto de la RC en el rendimiento cognitivo a lo largo del tiempo en adultos de mediana edad con alto riesgo de Enfermedad de Alzheimer (EA).

Principales métodos:

  • 225 adultos de mediana edad con antecedentes familiares de EA se sometieron a evaluaciones cognitivas y de RM basales y a reevaluaciones de seguimiento.
  • La RC se midió por vocabulario; la función cognitiva se evaluó en memoria, atención y razonamiento.
  • Los análisis de mediación controlaron las variables demográficas y de neuroimagen.

Principales resultados:

  • La RC más alta se correlacionó positivamente con el rendimiento cognitivo basal en todos los dominios.
  • Una RC más alta predijo un mayor deterioro cognitivo en memoria, atención y razonamiento a lo largo del tiempo.
  • El rendimiento basal medió estos efectos, excepto para la memoria de trabajo.

Conclusiones:

  • La RC compensa el deterioro funcional debido a la atrofia cerebral pero no detiene la progresión.
  • La función cognitiva se mantiene temporalmente, pero el deterioro se acelera una vez iniciado.
  • Las intervenciones tempranas dirigidas a los orígenes de la enfermedad son cruciales para mitigar los impactos a largo plazo.