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Ciencia básica y patogénesis

Laura Vegas-Gomez¹, Jesus Garcia-Martin¹, Maria Angeles Arredondo-Alcala¹

¹Dept. Cell Biology, Faculty of Sciences, University of Malaga. IBIMA., Malaga, Spain.

Alzheimer's & dementia : the journal of the Alzheimer's Association

|December 25, 2025

Resumen

La depresión puede causar patología de la enfermedad de Alzheimer (EA). El estrés crónico en ratones indujo síntomas depresivos y empeoró los marcadores de la EA, lo que sugiere que la depresión es un factor de riesgo para el desarrollo de la EA.

Palabras clave:

depresión enfermedad de Alzheimer estrés crónico modelos animales neurociencia

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Área de la Ciencia:

Neurociencia
Gerontología
Psiquiatría

Sus antecedentes:

La depresión en la vejez se asocia con deterioro cognitivo y enfermedad de Alzheimer (EA).
La depresión acelera la aparición de la EA en pacientes con deterioro cognitivo leve (DCL), particularmente en mujeres.
Los pacientes con DCL deprimidos presentan una mayor carga de beta-amiloide y un mayor riesgo de EA.

Objetivo del estudio:

Investigar si la depresión causa patología de la enfermedad de Alzheimer (EA).
Determinar si la depresión en la vejez actúa como un factor de riesgo para la demencia.

Principales métodos:

Inducción de estrés crónico impredecible leve (CUMS) en ratones transgénicos P301S de tau.
Observación de cambios fenotípicos y estudios conductuales.
Realización de análisis histológicos para evaluar la patología de la EA.

Principales resultados:

La inducción de CUMS resultó en cambios fenotípicos similares a la depresión en ratones transgénicos.
Los datos conductuales e histológicos sugieren que la depresión exacerba la patología de la EA.
Se demostró que la inducción de depresión empeora la patología de la EA en el modelo experimental.

Conclusiones:

Los hallazgos respaldan la depresión como un posible factor de riesgo para la EA.
El estudio podría dilucidar los mecanismos que vinculan la depresión y la EA.
Los resultados pueden ayudar en el desarrollo de biomarcadores tempranos y nuevas terapias para la EA.