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lncRNAs Are Involved in Sevoflurane Anesthesia-Related Brain Function Modulation through Affecting Mitochondrial

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Long noncoding RNAs (lncRNAs) are implicated in anesthesia-related brain dysfunction. Sevoflurane anesthesia altered lncRNA expression, impacting pathways like mitochondrial dysfunction and apoptosis in aged rat hippocampus.

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Long noncoding RNAs (lncRNAs) are recognized for their roles in modulating brain function and neurodegenerative diseases.
  • The involvement of lncRNA regulation in perioperative neurocognitive disorders, particularly anesthesia-related brain dysfunction, remains largely unexplored.

Purpose of the Study:

  • To investigate the expression and regulatory patterns of lncRNAs in the hippocampus of aged rats following sevoflurane anesthesia.
  • To elucidate the potential mechanisms underlying anesthesia-induced brain dysfunction involving lncRNAs.

Main Methods:

  • Microarray analysis was employed to identify differentially expressed lncRNAs and protein-coding genes in the hippocampus post-sevoflurane anesthesia.
  • In vitro and in vivo experiments were conducted to validate the findings.
  • Functional annotation and coexpression network analyses were performed on differentially expressed lncRNAs and mRNAs.

Main Results:

  • Microarray analysis identified three differentially expressed lncRNAs and 772 differentially expressed protein-coding genes.
  • Differentially expressed lncRNAs were found to be associated with key biological processes including mitochondrial dysfunction, oxidative stress, aging-related metabolism, DNA damage, and apoptosis.
  • Coexpression network analysis revealed potential lncRNA-mRNA interactions relevant to sevoflurane anesthesia effects.

Conclusions:

  • lncRNAs play a significant role in modulating brain function during general anesthesia in the perioperative period.
  • The study provides novel insights into lncRNA-mediated mechanisms contributing to anesthesia-related brain dysfunction and neurodegeneration.
  • Identified lncRNAs represent potential targets for future therapeutic interventions.