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Control neuronal del tacto afiliativo en la interacción prosocial
Ye Emily Wu1,2, James Dang3,4, Lyle Kingsbury3,4
1Department of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, CA, USA. ye.wu@ucla.edu.
Nature
|October 14, 2021
Resumen
Los ratones muestran un comportamiento reconfortante hacia las parejas angustiadas. Esta acción prosocial está controlada por neuronas específicas en la amígdala medial (MeA), destacando una base neuronal para el contacto social.
Área de la Ciencia:
- La neurociencia
- Etiología
- Comportamiento social
Sus antecedentes:
- Los comportamientos prosociales como el tacto afiliativo son cruciales para el bienestar de las especies sociales.
- El contacto social de afiliación, incluido el alogrooming, fortalece los lazos sociales y consuela a las personas angustiadas.
- Los mecanismos neuronales que subyacen al tacto prosocial siguen siendo en gran medida desconocidos.
Objetivo del estudio:
- Para investigar los circuitos neuronales que controlan el tacto afiliación prosocial en ratones.
- Para entender cómo el cerebro procesa las señales de angustia y provoca comportamientos reconfortantes.
Principales métodos:
- Comportamiento de alogrooming observado en ratones hacia parejas en apuros.
- Utilizó imágenes microendoscópicas de calcio para monitorear la actividad neuronal en la amígdala medial (MeA).
- Empleó manipulaciones funcionales interseccionales para establecer vínculos causales entre las neuronas MeA y el comportamiento.
Principales resultados:
- Los ratones muestran una mayor atracción hacia sus congéneres en peligro, incluso respondiendo a señales olfativas.
- La actividad neuronal en el MeA diferencia entre individuos ingenuos y angustiados y se correlaciona con el alogrooming.
- Se identificó una subpoblación específica de neuronas GABAérgicas MeA que expresan taquininas como crucial para promover el alogrooming a través de proyecciones al área preóptica medial.
Conclusiones:
- Los ratones muestran un comportamiento de consuelo prosocial a través del alogrooming.
- La amígdala medial (MeA) juega un papel crítico en el control neuronal del tacto afiliativo.
- Este estudio revela un mecanismo de circuito neuronal específico para codificar y ejecutar el tacto prosocial.
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