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Ciencia básica y patogénesis

Olatokun Shamsudeen Akano1,2, Halleluyah Darasimi Oludele2, Chukwuebuka Stanley Asogwa3,4,5

  • 1College of Medicine, University of Ibadan, Nigeria., Ibadan, Oyo, Nigeria.

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

La genética de la enfermedad de Alzheimer (EA) en poblaciones africanas muestra patrones y factores de riesgo únicos distintos de las poblaciones europeas. Es crucial una mayor representación en la investigación genómica para comprender la EA en África y desarrollar intervenciones específicas.

Palabras clave:
enfermedad de Alzheimergenéticapoblaciones africanasfactores de riesgoinvestigación genómicadisparidadintervenciones

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Área de la Ciencia:

  • Neurociencia
  • Genética
  • Salud de la Población

Sus antecedentes:

  • La población que envejece en países de ingresos bajos y medianos está aumentando, lo que provoca un aumento de la demencia, especialmente la enfermedad de Alzheimer (EA).
  • Las poblaciones africanas enfrentan un mayor riesgo de EA debido a factores genéticos, pero están subrepresentadas en la investigación genómica.
  • Esta subrepresentación dificulta la identificación de variantes genéticas específicas de África y estrategias terapéuticas efectivas.

Objetivo del estudio:

  • Revisar y analizar los estudios genéticos existentes sobre la enfermedad de Alzheimer en poblaciones africanas.
  • Identificar factores de riesgo genéticos y patrones únicos de EA en África.
  • Destacar la disparidad en la representación de la investigación genómica entre poblaciones africanas y europeas.

Principales métodos:

  • Se realizó una búsqueda sistemática de literatura en PubMed para estudios genéticos sobre la enfermedad de Alzheimer en África.
  • Se seleccionaron 28 estudios relevantes revisados por pares que investigaban genes de susceptibilidad a la EA en poblaciones africanas y europeas.
  • Se incluyeron estudios si se centraban en factores genéticos de la EA en poblaciones africanas y europeas; se excluyeron editoriales, comentarios y estudios irrelevantes.

Principales resultados:

  • Se observaron patrones genéticos distintos para la enfermedad de Alzheimer (EA) en poblaciones africanas, incluidas mutaciones específicas de la población (por ejemplo, PSEN1 R35Q, V191A) y el factor de riesgo crucial ABCA7.
  • Si bien los genes tradicionales de la EA (APP, PSEN1, PSEN2) muestran presentaciones variadas, genes como PON1, TREM2 y SLC24A4 presentan firmas genéticas únicas en poblaciones africanas.
  • Los estudios genéticos africanos están subrepresentados (36%) en comparación con los estudios europeos (50%), con diferencias notables en el impacto de genes como BIN1 y TREM2.

Conclusiones:

  • Existen variaciones genéticas y correlaciones significativas entre los genes de la enfermedad de Alzheimer en poblaciones africanas y europeas.
  • La subrepresentación de estudios genómicos a gran escala en poblaciones africanas requiere urgentemente una investigación más representativa.
  • La expansión de la investigación es vital para desarrollar intervenciones personalizadas para la prevención y el tratamiento de la EA en las comunidades africanas.