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Manifestaciones Clínicas

Carolina S Hernández1,2, Kathryn A LaFroscia1,2, Deborah Zemlock1,2

  • 1Northwestern University Feinberg School of Medicine, Chicago, IL, USA.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 26, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Los SuperAgers, individuos con memoria excepcional, demostraron una mayor capacidad de identificación de olores en comparación con sus pares de envejecimiento normal. Esto sugiere un vínculo potencial entre un olfato superior y la preservación de la función cognitiva en adultos mayores.

Palabras clave:
SuperAgersmemoria excepcionalidentificación de oloresenvejecimientofunción cognitiva

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Área de la Ciencia:

  • Neurociencia
  • Gerontología
  • Investigación Olfativa

Sus antecedentes:

  • La disminución olfativa se asocia con la pérdida de memoria y la enfermedad de Alzheimer.
  • La relación entre la memoria superior y el olfato en el envejecimiento no se comprende bien.
  • Los SuperAgers exhiben una memoria episódica preservada, lo que ofrece un modelo único para el envejecimiento cognitivo.

Objetivo del estudio:

  • Investigar si los SuperAgers superan a los individuos de envejecimiento normal en la identificación de olores.
  • Explorar la asociación entre la memoria excepcional y la función olfativa.

Principales métodos:

  • Sesenta y un participantes (SuperAgers y Normal-Agers) completaron la Prueba de Identificación de Olores NIH Toolbox (NIHTB-OIT).
  • Los participantes identificaron olores de nueve tarjetas de rascar y oler.
  • Se compararon los rendimientos de los grupos mediante pruebas t de muestras independientes y pruebas de chi-cuadrado.

Principales resultados:

  • Los SuperAgers mostraron puntuaciones totales de identificación de olores más altas que los Normal-Agers, tendiendo a la significancia (p=0.063).
  • Los SuperAgers fueron significativamente más precisos en la identificación de gas natural (p<0.01).
  • Las tendencias sugirieron una mejor identificación de chocolate y palomitas de maíz en los SuperAgers.

Conclusiones:

  • Los SuperAgers poseen habilidades superiores de identificación de olores en comparación con sus pares cognitivamente promedio.
  • Esto puede estar relacionado con la integridad de los sistemas límbico y olfativo relacionados con la memoria.
  • La investigación adicional sobre el olfato en SuperAging podría definir la base biológica de la memoria excepcional.