Evidence map›Paper›PMID 28772063›Full record

ArticleAging cell2017

The ω-3 fatty acid α-linolenic acid extends Caenorhabditis elegans lifespan via NHR-49/PPARα and oxidation to oxylipins.

Wenbo Qi, Gloria E Gutierrez, Xiaoli Gao, Hong Dixon, Joe A McDonough, Ann M Marini, Alfred L Fisher

Open access · goldAbstract read
In one paragraph

Article in Aging cell, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
2.1field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

52 citing papers in PubMed, 80 citations in OpenAlex.

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  8. Review
  9. Anti-Aging Potential of Avocado Oil via Its Antioxidant Effects.Pharmaceuticals (Basel, Switzerland) · 2025
    Review
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  20. Application ofInternational journal of molecular sciences · 2023
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

Wenbo QiCenter for Healthy Aging, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA.
Gloria E GutierrezPharmaceuticals and Bioengineering, Chemistry and Chemical Engineering Division, Southwest Research Institute, San Antonio, TX, 78238, USA.
Xiaoli GaoDepartment of Biochemistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA.
Hong DixonPharmaceuticals and Bioengineering, Chemistry and Chemical Engineering Division, Southwest Research Institute, San Antonio, TX, 78238, USA.
Joe A McDonoughPharmaceuticals and Bioengineering, Chemistry and Chemical Engineering Division, Southwest Research Institute, San Antonio, TX, 78238, USA.
Ann M MariniDepartment of Neurology and Program in Neuroscience, Uniformed Services University of the Health Sciences, Bethesda, MD, 20814, USA.
Alfred L FisherCenter for Healthy Aging, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA.ORCID 0000-0001-6451-2644
Southwest Research Institute · USThe University of Texas Health Science Center at San Antonio · USUniformed Services University of the Health Sciences · US

Funding

TRANSGENIC COREP30AG013319 · NIA · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI PETER J HORNSBY · 1995 to 2026
$30.6M
Effects of insulin-like signaling, aging, and ubiquinone on C. elegans muscleR01AG044768 · NIA · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI FISHER, ALFRED L · 2012 to 2016
$1.6M
NIA NIH HHS P30 AG013319NIA NIH HHS R01 AG044768
6 · The paper itself

Abstract

The dietary intake of ω-3 polyunsaturated fatty acids has been linked to a reduction in the incidence of aging-associated disease including cardiovascular disease and stroke. Additionally, long-lived Caenorhabditis elegans glp-1 germ line-less mutant animals show a number of changes in lipid metabolism including the increased production of the ω-3 fatty acid, α-linolenic acid (ALA). Here, we show that the treatment of C. elegans with ALA produces a dose-dependent increase in lifespan. The increased longevity of the glp-1 mutant animals is known to be dependent on both the NHR-49/PPARα and SKN-1/Nrf2 transcription factors, although the mechanisms involved are incompletely understood. We find that ALA treatment increased the lifespan of wild-type worms and that these effects required both of these transcription factors. Specifically, NHR-49 was activated by ALA to promote the expression of genes involved in the β-oxidation of lipids, whereas SKN-1 is not directly activated by ALA, but instead, the exposure of ALA to air results in the oxidation of ALA to a group of compounds termed oxylipins. At least one of the oxylipins activates SKN-1 and enhances the increased longevity resulting from ALA treatment. The results show that ω-3 fatty acids inhibit aging and that these effects could reflect the combined effects of the ω-3 fatty acid and the oxylipin metabolites. The benefits of ω-3 fatty acid consumption on human health may similarly involve the production of oxylipins, and differences in oxylipin conversion could account for at least part of the variability found between observational vs. interventional clinical trials.

Indexed as

alpha-Linolenic AcidAnimalsBiotransformationCaenorhabditis elegansCaenorhabditis elegans ProteinsDNA-Binding ProteinsDose-Response Relationship, DrugGene Expression Regulation, DevelopmentalLipid MetabolismLongevityNF-E2-Related Factor 2Oxidation-ReductionOxylipinsPPAR alphaReceptors, Cytoplasmic and NuclearSignal Transductionalpha-Linolenic AcidCaenorhabditis elegans ProteinsDNA-Binding ProteinsNF-E2-Related Factor 2NHR-49 protein, C elegansOxylipinsPPAR alphaReceptors, Cytoplasmic and Nuclearskn-1 protein, C elegansTranscription FactorsagingCaenorhabditis elegansNHR-49oxylipinSKN-1ω-3 fatty acids

Identifiers

PMID28772063
PMCPMC5595674
OpenAlexW2745038336

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.