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La liberación de serotonina en el habénula durante el contagio emocional promueve la resiliencia
Sarah Mondoloni1, Patricia Molina1, Salvatore Lecca1
1The Department of Fundamental Neuroscience, The University of Lausanne, 1005 Lausanne, Switzerland.
Science (New York, N.Y.)
|September 5, 2024
Resumen
Ser testigo de la angustia de otros puede fortalecer la resiliencia ante futuras amenazas. Esta resiliencia está mediada por la serotonina (5-HT) en el cerebro, que influye específicamente en la actividad neuronal habenular.
Área de la Ciencia:
- La neurociencia
- Biología del comportamiento
- El contagio emocional
Sus antecedentes:
- El contagio emocional negativo, o ser testigo de la angustia, tiene un impacto en la respuesta emocional.
- El efecto del contagio emocional en las futuras estrategias de afrontamiento de amenazas no se entiende bien.
Objetivo del estudio:
- Investigar si presenciar el daño en otros influye en la resiliencia de un individuo a futuras experiencias adversas.
- Explorar los mecanismos neurobiológicos, en particular el papel de la serotonina (5-HT) y la actividad habenular, que subyacen a este fenómeno.
Principales métodos:
- Los ratones fueron expuestos a un daño específico para inducir un contagio emocional negativo.
- Se realizaron pruebas de desesperación conductual después de experiencias adversas para evaluar la resiliencia.
- Se utilizaron grabaciones fotométricas para medir la liberación de serotonina y el disparo neuronal en la habénula lateral.
Principales resultados:
- Los ratones que observaron el daño se volvieron resistentes a las experiencias adversas posteriores.
- El contagio emocional negativo aumentó la liberación de serotonina (5-HT) en el habenula lateral, reduciendo el disparo de la ráfaga habenular.
- La manipulación de la síntesis y liberación de 5-HT en la vía rafe-habenula moduló la resiliencia, con una reducción de la resiliencia de prevención de 5-HT.
Conclusiones:
- La serotonina (5-HT) juega un papel crucial en la mediación de las emociones vicarias y la promoción de la resiliencia.
- La resiliencia se logra mediante la sintonización de patrones específicos de actividad neuronal habenular a través de 5-HT.
- Ser testigo de la angustia puede conferir un fenotipo protector y resistente contra la adversidad futura a través de vías neuroquímicas.
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