Cited by 69Anesthesia and Sedative AgentsMitochondrial Function and PathologyAnesthesia and Neurotoxicity Research

Mitochondrial complex I function modulates volatile anesthetic sensitivity in C. elegans

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Falk, Marni J., Kayser, Ernst-Bernhard, Morgan, Philip G., Sedensky, Margaret M.·2006·Current Biology

Abstract

Despite the widespread clinical use of volatile anesthetics, their mechanisms of action remain unknown [1-6]. An unbiased genetic screen in the nematode C. elegans for animals with altered volatile anesthetic sensitivity identified a mutant in a nuclear-encoded subunit of mitochondrial complex I [7,8]. This raised the question of whether mitochondrial dysfunction might be the primary mechanism by which volatile anesthetics act, rather than an untoward secondary effect [9,10]. We report here analysis of additional C. elegans mutations in orthologs of human genes that contribute to the formation of complex I, complex II, complex III, and coenzyme Q [11-14]. To further characterize the specific contribution of complex I, we generated four hypomorphic C. elegans mutants encoding different complex I subunits [15]. Our main finding is the identification of a clear correlation between complex I-dependent oxidative phosphorylation capacity and volatile anesthetic sensitivity. These extended data link a physiologic determinant of anesthetic action in a tractable animal model to similar clinical observations in children with mitochondrial myopathies [16]. This work is the first to specifically implicate complex I-dependent oxidative phosphorylation function as a primary mediator of volatile anesthetic effect.

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Crossref · 10.1016/j.cub.2006.06.072

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Authors
Falk, M. J., Kayser, E.-B., Morgan, P. G., & Sedensky, M. M.
Affiliations
University Hospitals of Cleveland (US)
Corresponding author
Sedensky, Margaret M.
Venue
Current Biology
Publisher
Elsevier BV
Published
2006-08
Volume
16
Issue
16
Pages
1641-1645
ISSN
0960-9822 (ISSN-L)
OpenAlex
W2018676384
Cited by
69
References
31
Citations by year
2026: 3 · 2025: 1 · 2024: 4 · 2023: 5 · 2022: 3 · 2021: 6 · 2020: 1 · 2019: 2 · 2018: 3 · 2017: 5 · 2016: 1 · 2015: 2 · 2014: 5 · 2012: 6
FWCI
3.31
Type
journal article
Language
en
Open access
Locations
  • Current Biology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5k08dk073545-05)
  • National Institute of General Medical Sciences (R01GM058881)
  • National Institute of Diabetes and Digestive and Kidney Diseases (K08-DK073545, 1K08 DK 073545-01)
  • National Center for Research Resources (K12RR023264)
Topics
  • Health Sciences › Medicine › Anesthesiology and Pain Medicine › Anesthesia and Sedative Agents
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Neuroscience › Developmental Neuroscience › Anesthesia and Neurotoxicity Research
Keywords
mitochondrial complex I, volatile anesthetics, anesthetic sensitivity, oxidative phosphorylation, mitochondrial dysfunction, Caenorhabditis elegans, complex II, cytochrome bc1 complex, coenzyme Q10, hypomorphic mutants, mitochondrial myopathy
MeSH terms
Anesthetics, Animals, Genetic Testing, Halothane, Mitochondria, Mutation, Oxidative Phosphorylation, Caenorhabditis elegans, RNA Interference, Electron Transport Chain Complex Proteins

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