Mitochondrial modulation treating postoperative cognitive dysfunction neuroprotection via DRP1 inhibition by Mdivi1.
Dynamins
/ metabolism
Animals
Mice
Mitochondria
/ metabolism
Mitochondrial Dynamics
/ drug effects
Quinazolinones
/ pharmacology
Postoperative Cognitive Complications
/ metabolism
Male
Reactive Oxygen Species
/ metabolism
Microglia
/ metabolism
Disease Models, Animal
Neuroprotection
/ drug effects
Membrane Potential, Mitochondrial
/ drug effects
Mice, Inbred C57BL
Hippocampus
/ metabolism
Neuronal Plasticity
/ drug effects
NLR Family, Pyrin Domain-Containing 3 Protein
/ metabolism
Neuroprotective Agents
/ pharmacology
DRP1
NLRP3
Neuroinflammation
POCD
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
30 10 2024
30 10 2024
Historique:
received:
11
05
2024
accepted:
07
10
2024
medline:
31
10
2024
pubmed:
31
10
2024
entrez:
31
10
2024
Statut:
epublish
Résumé
This study investigated the role of mitochondrial dynamics in postoperative cognitive dysfunction (POCD) and assessed the therapeutic potential of mitochondrial modulation, particularly through the inhibition of dynamin-related protein 1 (DRP1) with Mdivi-1. Our findings indicated that DRP1 inhibition substantially mitigated neuroinflammation mediated by microglial cells, contributing to improved cognitive function in POCD models. The administration of Mdivi-1 led to a notable decrease in mitochondrial fission, reduced reactive oxygen species (ROS) production, and stabilization of mitochondrial membrane potential, all of which correlate with diminished neuroinflammation, as evidenced by lower NOD-like receptor family pyrin domain containing 3 (NLRP3)/ interleukin-1β (IL-1β) expression in microglial cells. Importantly, Mdivi-1 treatment was also found to enhance synaptic plasticity, increasing synaptic spine density in the hippocampal region of POCD mice. This improvement in mitochondrial health and synaptic integrity was paralleled by enhanced cognitive performance, as demonstrated in Y-maze tests. These results underscored the critical role of mitochondrial dynamics in the pathophysiology of POCD and suggested that targeting mitochondrial dysfunction, specifically through DRP1 inhibition, could be an effective approach for POCD treatment.
Identifiants
pubmed: 39478015
doi: 10.1038/s41598-024-75548-1
pii: 10.1038/s41598-024-75548-1
doi:
Substances chimiques
Dynamins
EC 3.6.5.5
3-(2,4-dichloro-5-methoxyphenyl)-2-sulfanyl-4(3H)-quinazolinone
0
Dnm1l protein, mouse
EC 3.6.5.5
Quinazolinones
0
Reactive Oxygen Species
0
NLR Family, Pyrin Domain-Containing 3 Protein
0
Neuroprotective Agents
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
26155Subventions
Organisme : National Natural Science Foundation of China
ID : 81971290
Informations de copyright
© 2024. The Author(s).
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