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Updated: Jun 28, 2026

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Fat Preference: A Novel Model of Eating Behavior in Rats
Published on: June 27, 2014
La relación entre la obesidad y la respuesta estriatal embotada a los alimentos está moderada por el alelo A1 de
1Oregon Research Institute, 1715 Franklin Boulevard, Eugene, OR 97403, USA. estice@ori.org .
Resumen
Las personas con activación reducida del estriado dorsal pueden comer en exceso, especialmente aquellas con factores genéticos que afectan la señalización de la dopamina. Esta región del cerebro.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- Investigación de la obesidad.
- Genética La genética.
Sus antecedentes:
- El estriado dorsal es crucial para el procesamiento de alimentos. recompensa.
- Las personas obesas presentan una reducción de los receptores de dopamina D2 en el estriado.
- Esto sugiere un vínculo entre la señalización estriatal de la dopamina y el desarrollo de la obesidad.
Objetivo del estudio:
- Para investigar la relación entre la activación del estriado dorsal durante la ingesta de alimentos y la masa corporal.
- Para examinar si las variaciones genéticas (polimorfismo Taqia) moderar esta relación.
- Para explorar el papel del gen del receptor de dopamina D2 (DRD2) en la obesidad.
Principales métodos:
- Utilizó imágenes de resonancia magnética funcional (fMRI) en dos estudios.
- Se analizaron datos transversales y prospectivos.
- Se evaluó la activación estriatal en respuesta a la ingesta de alimentos.
Principales resultados:
- La activación estriatal durante la ingesta de alimentos se correlacionó con la masa corporal actual.
- La reducción de la activación estriatal predijo futuros aumentos en la masa corporal.
- El alelo A1 del polimorfismo TaqIA moderó estas asociaciones.
Conclusiones:
- El hipofuncionamiento del estriado dorsal puede conducir a comer en exceso como compensación.
- Los polimorfismos genéticos que afectan a la señalización de la dopamina exacerban este efecto.
- Los hallazgos implican la función estriatal y la genética DRD2 en la patogénesis de la obesidad.
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