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Escisión de la esquizofrenia: resultados cognitivos y educativos divergentes revelados por el modelado de ecuaciones
Cameron James Watson1,2,3, Johan Zvrskovec1,3, Giuseppe Pierpaolo Merola1
1Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
Molecular psychiatry
|January 31, 2026
Resumen
El análisis genético revela dos vías distintas hacia la esquizofrenia. Una vía comparte vínculos genéticos con el trastorno bipolar y el rendimiento educativo, mientras que otra está más fuertemente asociada con un coeficiente intelectual más bajo y un impacto neurocognitivo.
Área de la Ciencia:
- Neurociencia; Psiquiatría; Genética
Sus antecedentes:
- Los fundamentos genéticos de la esquizofrenia, el coeficiente intelectual y el rendimiento educativo (EA) son complejos y están interconectados.; Investigaciones previas indican que las puntuaciones poligénicas de la esquizofrenia (PGS) se asocian con un menor coeficiente intelectual, mientras que las PGS de mayor coeficiente intelectual se correlacionan con un menor riesgo de esquizofrenia.; Paradójicamente, se ha relacionado una predisposición genética a un mayor EA con un mayor riesgo de esquizofrenia, potencialmente debido a la genética compartida con el trastorno bipolar.
Objetivo del estudio:
- Disecar las contribuciones genéticas a la esquizofrenia utilizando un enfoque de modelado de ecuaciones estructurales genómicas de variables latentes.; Identificar variantes genéticas específicas asociadas únicamente con la esquizofrenia frente a las compartidas con el trastorno bipolar.; Investigar las relaciones genéticas divergentes entre la esquizofrenia, el trastorno bipolar, el coeficiente intelectual y el EA.
Principales métodos:
- Modelado de ecuaciones estructurales genómicas (GSem) aplicado a estadísticas resumidas de GWAS para esquizofrenia y trastorno bipolar.; Identificación de polimorfismos de un solo nucleótido (SNP) asociados específicamente con la esquizofrenia (SZspecific) y aquellos compartidos con el trastorno bipolar (PSYshared).; Análisis de puntuaciones poligénicas (PGS) en el UK Biobank y aleatorización mendeliana para corroborar los hallazgos.
Principales resultados:
- Los SNP específicos de la esquizofrenia y SZ mostraron una correlación genética negativa con el CI (rg = -0.22 y -0.24, respectivamente).; Los SNP compartidos por PSY exhibieron una correlación genética positiva con el EA (rg = 0.11), mientras que los SNP específicos de SZ mostraron una correlación negativa (rg = -0.06).; Los análisis de PGS confirmaron estas relaciones divergentes: el PGS específico de SZ se asoció negativamente con el EA (β = -0.13) y el PGS compartido por PSY se asoció positivamente (β = 0.14).
Conclusiones:
- El análisis genético apoya dos vías distintas que contribuyen al riesgo de esquizofrenia.; Una vía se comparte genéticamente con el trastorno bipolar, influyendo positivamente en el EA.; La otra vía es más específica de la esquizofrenia, con un mayor impacto en la neurocognición (CI) y una asociación negativa con el EA.
Palabras clave:
esquizofreniatrastorno bipolarcoeficiente intelectualrendimiento educativogenéticamodelado de ecuaciones estructurales genómicasvías genéticasMás Videos Relacionados
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