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La exposición prenatal al alcohol y la corteza retrosplenial: mecanismos estructurales y funcionales entre especies
M Anna Lee1, Rhudovic R Ramos1, Basel M Taha1
1Department of Neurosciences, School of Medicine University of New Mexico Health Sciences Center, Albuquerque, NM, USA.
Progress in neuro-psychopharmacology & biological psychiatry
|February 11, 2026
Resumen
La exposición al alcohol en el desarrollo daña la corteza retrosplenial (CRS), una región clave del cerebro para la memoria y la navegación. Las intervenciones dirigidas a la disfunción del RSC son prometedoras para el tratamiento de los trastornos del desarrollo neurológico relacionados con el alcohol.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- Neurociencia del desarrollo neurológico.
- La neurotoxicidad.
Sus antecedentes:
- La corteza retrosplenial (CRS) es una región crítica del cerebro que integra información sensorial, estados cognitivos y memoria para guiar el comportamiento.
- Desempeña un papel vital en la navegación, la función ejecutiva y la cognición superior.
- El RSC es particularmente vulnerable a la exposición temprana al alcohol.
Objetivo del estudio:
- Revisar y sintetizar la evidencia sobre la patología de la corteza retrosplenial inducida por el alcohol.
- Explorar las consecuencias celulares, del circuito y del comportamiento de la exposición al alcohol en el desarrollo en el RSC.
- Discutir las implicaciones para los trastornos del espectro alcohólico fetal (TEAF) y las posibles intervenciones.
Principales métodos:
- Revisión de estudios en animales que detallan la neurodegeneración, la lesión vascular y las alteraciones sinápticas en el RSC después de la exposición al alcohol.
- Análisis de estudios de neuroimagen en humanos (resonancia magnética estructural, resonancia magnética funcional, DTI) que examinan las anomalías de la RSC y de las regiones interconectadas.
- Correlación de los hallazgos neurobiológicos con los déficits conductuales relevantes para los TEAF.
Principales resultados:
- Los modelos animales muestran que la exposición al alcohol causa neurodegeneración del RSC, daño vascular, pérdida de interneuronas y alteración de la función sináptica.
- Los estudios en humanos revelan anormalidades estructurales (por ejemplo, volumen reducido de materia gris / blanca) y interrupciones de la red funcional en RSC y áreas adyacentes.
- Estos cambios están relacionados con déficits en la memoria, la flexibilidad cognitiva y el sueño, consistentes con los síntomas del TEAF.
Conclusiones:
- La corteza retrosplenial (CRS) es un objetivo primario de la neurotoxicidad relacionada con el alcohol durante el desarrollo.
- La evidencia de estudios en animales y humanos implica fuertemente la disfunción RSC en la fisiopatología de las FASD.
- Las intervenciones dirigidas a la patología RSC ofrecen una vía terapéutica prometedora para las personas con TEAF.
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