Evidence map›Paper›PMID 27497229›Full record

ReviewCurrent opinion in genetics & development2016

Amelioration of premature aging in mtDNA mutator mouse by exercise: the interplay of oxidative stress, PGC-1α, p53, and DNA damage. A hypothesis.

Adeel Safdar, Sofia Annis, Yevgenya Kraytsberg, Chloe Laverack, Ayesha Saleem, Konstantin Popadin, Dori C Woods, Jonathan L Tilly, Konstantin Khrapko

Abstract readReview
In one paragraph

Review in Current opinion in genetics & development, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

27 citing papers in PubMed, 44 citations in OpenAlex.

  1. Review
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  13. Article
  14. The Role of Mitochondria in Vascular Calcification.Journal of translational internal medicine · 2020
    Review
  15. Review
  16. p53: A Key Protein That Regulates Pulmonary Fibrosis.Oxidative medicine and cellular longevity · 2020
    Review
  17. Article
  18. Mitochondrial Dysfunction in Aging and Cancer.Journal of clinical medicine · 2019
    Review
  19. Article
  20. Potential Roles for G-Quadruplexes in Mitochondria.Current medicinal chemistry · 2019
    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

9 authors at 4 institutions in 3 countries.

Adeel SafdarDepartment of Pediatrics, McMaster University, Hamilton, ON L8N3Z5, Canada.
Sofia AnnisDepartment of Biology, Northeastern University, Boston, MA 02215, USA.
Yevgenya KraytsbergBeth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA.
Chloe LaverackDepartment of Biology, Northeastern University, Boston, MA 02215, USA.
Ayesha SaleemDepartment of Pediatrics, McMaster University, Hamilton, ON L8N3Z5, Canada.
Konstantin PopadinUniversity of Lausanne, Switzerland.
Dori C WoodsDepartment of Biology, Northeastern University, Boston, MA 02215, USA.
Jonathan L TillyDepartment of Biology, Northeastern University, Boston, MA 02215, USA.
Konstantin KhrapkoDepartment of Biology, Northeastern University, Boston, MA 02215, USA. Electronic address: kkhrapko@gmail.com.
Northeastern University · USMcMaster University · CABeth Israel Deaconess Medical Center · USUniversity of Lausanne · CH

Funding

Origins/Functions of Mammalian Female Germline Stem CellR37AG012279 · NIA · NORTHEASTERN UNIVERSITY · PI TILLY, JONATHAN LEE · 2006 to 2015
$3.3M
Somatic mtDNA mutations in brain Aging: a single-cell approachR01AG019787 · NIA · BETH ISRAEL DEACONESS MEDICAL CENTER · PI KHRAPKO, KONSTANTIN · 2001 to 2011
$2.8M
NIA NIH HHS R01 AG019787NIA NIH HHS R37 AG012279
6 · The paper itself

Abstract

The mtDNA mutator mouse lacks the proofreading capacity of the sole mtDNA polymerase, leading to accumulation of somatic mtDNA mutations, and a profound premature aging phenotype including elevated oxidative stress and apoptosis, and reduced mitochondrial function. We have previously reported that endurance exercise alleviates the aging phenotype in the mutator mice, reduces oxidative stress, and enhances mitochondrial biogenesis. Here we summarize our findings, with the emphasis on the central role of p53 in these adaptations. We demonstrate that mtDNA in sedentary and exercised PolG mice carry similar amounts of mutations in muscle, but in addition to that sedentary mice have more non-mutational damage, which is mitigated by exercise. It follows therefore that the profound alleviation of the mtDNA mutator phenotype in muscle by exercise may not require a reduction in mtDNA mutational load, but rather a decrease of mtDNA damage and/or oxidative stress. We further hypothesize that the observed 'alleviation without a reduction of mutational load' implies that the oxidative stress in PolG muscle is maintained, at least in part, by the 'malicious cycle', a hypothetical positive feedback potentially driven by the 'transcriptional mutagenesis', that is the conversion of chemically modified nucleotides into mutant RNA bases by the mitochondrial RNA polymerase.

Indexed as

Aging, PrematureAnimalsApoptosisDNA DamageDNA-Directed DNA PolymeraseDNA, MitochondrialDNA Polymerase gammaMiceMuscle, SkeletalMutationOxidative StressPeroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alphaPhysical Conditioning, AnimalTumor Suppressor Protein p53DNA-Directed DNA PolymeraseDNA, MitochondrialDNA Polymerase gammaPeroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alphaPolg protein, mousePpargc1a protein, mouseTumor Suppressor Protein p53

Identifiers

PMID27497229
PMCPMC5592087
OpenAlexW2487504041

What OpenQuestion holds

Textmetadata
LicenceTDM
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.