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Poder de las estrellas: los astrocitos regulan el comportamiento

Nicola J Allen1

  • 1Salk Institute for Biological Studies, Molecular Neurobiology Laboratory, 10010 North Torrey Pines Rd, La Jolla, CA 92037, USA.

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|May 18, 2019
PubMed
Resumen
Este resumen es generado por máquina.

Los astrocitos, un tipo de célula cerebral, regulan el comportamiento formando nuevas conexiones entre las neuronas. Esta investigación destaca el papel de los astrocitos estriatales y la señalización del receptor GABA en la modulación de comportamientos como la hiperactividad y la atención.

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Área de la Ciencia:

  • La neurociencia
  • Biología celular
  • Ciencias del comportamiento

Sus antecedentes:

  • Tradicionalmente, las neuronas se consideraban los únicos impulsores del comportamiento.
  • El papel de las células no neuronales, particularmente los astrocitos, en la modulación de los circuitos neuronales y el comportamiento sigue siendo un área activa de investigación.

Objetivo del estudio:

  • Investigar si los astrocitos pueden influir en el comportamiento.
  • Para dilucidar los mecanismos específicos por los cuales los astrocitos modulan la actividad neuronal y el comportamiento.

Principales métodos:

  • Se utilizaron enfoques genéticos y farmacológicos para manipular la función de los astrocitos in vivo.
  • Se examinó el impacto de las vías de señalización específicas de los astrocitos en la plasticidad sináptica neuronal.
  • Evaluó los cambios de comportamiento en respuesta a la modulación de los astrocitos, centrándose en la hiperactividad y la atención.

Principales resultados:

  • Se demostró que los astrocitos estriatales, a través de la señalización del receptor GABAB, regulan activamente las salidas conductuales.
  • Se demostró que la señalización de los astrocitos induce la formación de nuevas sinapsis entre las neuronas.
  • Se confirmó un vínculo directo entre los cambios sinápticos mediados por los astrocitos y la modulación del comportamiento, incluyendo la hiperactividad y la atención.

Conclusiones:

  • Los astrocitos no son simplemente células de apoyo, sino que participan activamente en la formación de circuitos neuronales y el comportamiento.
  • La señalización del receptor GABAB en los astrocitos representa una vía clave para regular la plasticidad sináptica y los comportamientos complejos.
  • Este estudio amplía nuestra comprensión de las interacciones entre astrocitos y neuronas y sus implicaciones para la función cerebral.