Activation of Ventral Tegmental Area Dopaminergic Neurons Projecting to the Parabrachial Nucleus Promotes Emergence from Propofol Anesthesia in Male Rats.
Neurochem Res
; 49(8): 2060-2074, 2024 Aug.
Article
en En
| MEDLINE
| ID: mdl-38814359
ABSTRACT
Since the clinical introduction of general anesthesia, its underlying mechanisms have not been fully elucidated. The ventral tegmental area (VTA) and parabrachial nucleus (PBN) play pivotal roles in the mechanisms underlying general anesthesia. However, whether dopaminergic (DA) projections from the VTA to the PBN play a role in mediating the effects of general anesthesia is unclear. We microinjected 6-hydroxydopamine into the PBN to damage tyrosine hydroxylase positive (TH+) neurons and found a prolonged recovery time from propofol anesthesia. We used calcium fiber photometry recording to explore the activity of TH + neurons in the PBN. Then, we used chemogenetic and optogenetic approaches either activate the VTADA-PBN pathway, shortening the propofol anesthesia emergence time, or inhibit this pathway, prolonging the emergence time. These data indicate the crucial involvement of TH + neurons in the PBN in regulating emergence from propofol anesthesia, while the activation of the VTADA-PBN pathway facilitates the emergence of propofol anesthesia.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Propofol
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Ratas Sprague-Dawley
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Área Tegmental Ventral
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Anestésicos Intravenosos
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Neuronas Dopaminérgicas
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Núcleos Parabraquiales
Límite:
Animals
Idioma:
En
Revista:
Neurochem Res
Año:
2024
Tipo del documento:
Article
País de afiliación:
China