Cited by 154Genetics, Aging, and Longevity in Model OrganismsNeuroscience and Neuropharmacology ResearchNeurobiology and Insect Physiology Research

Functional aging in the nervous system contributes to age-dependent motor activity decline in C. elegans

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Liu, Jie, Zhang, Bi, Lei, Haoyun, Feng, Zhaoyang, Liu, Jianfeng, Hsu, Ao-Lin, Xu, X.Z. Shawn·2013·Cell Metabolism

Abstract

Aging is characterized by a progressive decline in multiple physiological functions (i.e., functional aging). As animals age, they exhibit a gradual loss in motor activity, but the underlying mechanisms remain unclear. Here we approach this question in C. elegans by functionally characterizing its aging nervous system and muscles. We find that motor neurons exhibit a progressive functional decline, beginning in early life. Surprisingly, body-wall muscles, which were previously thought to undergo functional aging, do not manifest such a decline until mid-late life. Notably, motor neurons first develop a deficit in synaptic vesicle fusion followed by that in quantal size and vesicle docking/priming, revealing specific functional deteriorations in synaptic transmission. Pharmacological stimulation of synaptic transmission can improve motor activity in aged animals. These results uncover a critical role for the nervous system in age-dependent motor activity decline in C. elegans and provide insights into how functional aging occurs in this organism.

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Crossref · 10.1016/j.cmet.2013.08.007

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  • Loss of normal signaling from motorneurons has been implicated in C. elegans sarcopenia.

    “The possible role of PCD in the C. elegans sarcopenia is not known, however a loss of normal signaling from motorneurons has been implicated (Liu et al., 2013).”

    From Programmed cell death in aging (2015) · cites this paper as Liu et al., 2013

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Authors
Liu, J., Zhang, B., Lei, H., Feng, Z., Liu, J., Hsu, A.-L., & Xu, X. Z. S.
Affiliations
  • University of Michigan (US)
  • Case Western Reserve University (US)
Corresponding author
Xu, X.Z. Shawn
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2013-09
Volume
18
Issue
3
Pages
392-402
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2056724437
Cited by
154
References
30
Citations by year
2026: 7 · 2025: 16 · 2024: 20 · 2023: 8 · 2022: 11 · 2021: 10 · 2020: 15 · 2019: 13 · 2018: 10 · 2017: 7 · 2016: 14 · 2015: 12 · 2014: 7 · 2013: 3
FWCI
4.26
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of General Medical Sciences
  • National Natural Science Foundation of China (31130028, 31225011)
  • Ministry of Education of the People's Republic of China (B08029)
  • Ministry of Science and Technology of the People's Republic of China (2012CB51800)
  • National Institute on Aging
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
Keywords
functional aging, motor neurons, body wall muscle, synaptic vesicle fusion, quantal size, synaptic transmission, Caenorhabditis elegans
MeSH terms
Acetylcholine, Aging, Animals, gamma-Aminobutyric Acid, Motor Activity, Mutation, Nervous System, Synaptic Transmission, Neurons, Receptor, Insulin, Caenorhabditis elegans, Caenorhabditis elegans Proteins

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