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α-tocoferol alivia la toxicidad de la ketamina en neuronas del cerebro de rata
Enayatollah Seydi1,2, Sana Ghanizadeh3, Farzaneh Jokar4
1Department of Occupational Health and Safety Engineering, School of Health, Alborz University of Medical Sciences, Karaj, Iran.
BMC pharmacology & toxicology
|January 31, 2026
Resumen
El alfa-tocoferol (vitamina E) protege las neuronas del cerebro de rata de la neurotoxicidad de la ketamina al reducir el estrés oxidativo y preservar la integridad de la membrana celular. Este estudio destaca su potencial como terapia antioxidante contra la ketamina.
Área de la Ciencia:
- Neurociencia
- Toxicología
- Farmacología
Sus antecedentes:
- La ketamina tiene efectos beneficiosos pero puede causar neurotoxicidad, incluido estrés oxidativo y disfunción mitocondrial.
- Los mecanismos precisos que subyacen a la neurotoxicidad inducida por ketamina no se comprenden completamente.
Objetivo del estudio:
- Investigar los efectos neuroprotectores del alfa-tocoferol contra la toxicidad de la ketamina en neuronas del cerebro de rata.
- Elucidar el papel del estrés oxidativo y la función mitocondrial en la neurotoxicidad inducida por ketamina.
Principales métodos:
- Evaluación de la viabilidad de las neuronas del cerebro de rata, los niveles de especies reactivas de oxígeno (ROS) y el daño de la membrana mitocondrial/lisosomal.
- Medición de la liberación de citocromo c para evaluar la señalización de apoptosis.
- Examen de los efectos del alfa-tocoferol en neuronas tratadas con ketamina.
Principales resultados:
- La ketamina redujo significativamente la viabilidad neuronal (CI50 = 4 µM) y aumentó la producción de ROS.
- La ketamina indujo daño en la membrana mitocondrial y lisosomal y elevó la liberación de citocromo c.
- El alfa-tocoferol (10 µM) contrarrestó eficazmente los efectos tóxicos de la ketamina (8 µM).
Conclusiones:
- El alfa-tocoferol demuestra importantes propiedades antioxidantes, mitigando la neurotoxicidad inducida por ketamina.
- Preserva la integridad de la membrana neuronal y reduce la señalización de apoptosis.
- El alfa-tocoferol muestra potencial como agente terapéutico contra la neurotoxicidad de la ketamina.
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