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Ciencia básica y patogénesis

Hiranya Pintana1,2,3, Patcharapong Pantiya1,2, Chanisa Thonusin1,2,4

  • 1Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
PubMed
Resumen

El inhibidor del factor de diferenciación mieloide-2 (MD2) L6H2 redujo el estrés oxidativo en el cerebro de ratas hembra viejas pero no mejoró la función cognitiva. El inhibidor de la división mitocondrial-1 (MDV1) no mostró efectos significativos sobre la cognición o las mitocondrias cerebrales.

Palabras clave:
Estrés oxidativoFunción cognitivaMitocondrias cerebralesRatas hembra viejasInhibidor de MD2L6H2MDV1

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Área de la Ciencia:

  • Neurociencia; Biología Mitocondrial; Investigación sobre el envejecimiento

Sus antecedentes:

  • El deterioro cognitivo relacionado con la edad está relacionado con la disfunción mitocondrial cerebral.; Los inhibidores del factor de diferenciación mieloide-2 (MD2) y el inhibidor de la división mitocondrial-1 (MDV1) muestran potencial en modelos preclínicos.; Su eficacia en ratas hembra viejas es actualmente desconocida.

Objetivo del estudio:

  • Investigar los efectos del inhibidor de MD2 (L6H2) y MDV1 sobre la función cognitiva y la función mitocondrial cerebral en ratas hembra viejas.; Determinar si L6H2 o MDV1 pueden atenuar el deterioro cognitivo y la disfunción mitocondrial relacionados con la edad.

Principales métodos:

  • Se trataron ratas Wistar hembra viejas (24 meses) con L6H2, MDV1 o vehículo durante dos semanas.; Se evaluó la función cognitiva utilizando la prueba de localización de objetos novedosos (NOL).; Se midió la función mitocondrial cerebral, incluidos los niveles de especies reactivas de oxígeno (ERO) y el potencial de membrana, después del tratamiento.

Principales resultados:

  • El tratamiento con L6H2 redujo significativamente las ERO mitocondriales cerebrales y mejoró el potencial de membrana mitocondrial.; Ni el tratamiento con L6H2 ni con MDV1 mejoró la función cognitiva según lo evaluado por la prueba NOL.; El tratamiento con MDV1 no alteró significativamente la función mitocondrial cerebral ni el rendimiento cognitivo.

Conclusiones:

  • El inhibidor de MD2 (L6H2) demuestra potencial para reducir el estrés oxidativo mitocondrial cerebral en ratas hembra viejas.; La dosis y duración del estudio actual fueron insuficientes para mejorar la función cognitiva.; MDV1 no tuvo un impacto discernible en la función mitocondrial o la cognición en este modelo.