Evidence map›Paper›PMID 22278880›Full record

ArticleAging2012

Mitochondrial oxidative stress caused by Sod2 deficiency promotes cellular senescence and aging phenotypes in the skin.

Michael C Velarde, James M Flynn, Nicholas U Day, Simon Melov, Judith Campisi

Open access · hybridAbstract read
In one paragraph

Article in Aging, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 162 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
162citing papers in PubMed, 2 pooled it
11.1field-weighted citation impact, top 1% 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

162 citing papers in PubMed, 2 syntheses or guidelines pooled it, 279 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. Danggui Buxue Decoction Attenuates HClinical, cosmetic and investigational dermatology · 2026
    Article
  9. Review
  10. Article
  11. Article
  12. Reduced Usage ofPhenomics (Cham, Switzerland) · 2025
    Article
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102 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Michael C VelardeBuck Institute for Research on Aging, Novato, CA 94945, USA.
James M Flynn
Nicholas U Day
Simon Melov
Judith Campisi
Buck Institute for Research on Aging · USLawrence Berkeley National Laboratory · US

Funding

Training in Basic Research on Aging and Age-Related DiseaseT32AG000266 · NIA · UNIVERSITY OF CALIF-LAWRENC BERKELEY LAB · PI Lisa M Ellerby · 1998 to 2026
$13.8M
PROTEOMICSP01AG025901 · NIA · BUCK INSTITUTE FOR RESEARCH ON AGING · PI GIBSON, BRADFORD WAYNE · 2007 to 2011
$8.6M
Biotechnology and Biological Sciences Research Council BB/I020748/1NIA NIH HHS P01 AG025901NIA NIH HHS P01-AG025901NIA NIH HHS T32 AG000266NIA NIH HHS T32-AG000266
6 · The paper itself

Abstract

Cellular senescence arrests the proliferation of mammalian cells at risk for neoplastic transformation, and is also associated with aging. However, the factors that cause cellular senescence during aging are unclear. Excessive reactive oxygen species (ROS) have been shown to cause cellular senescence in culture, and accumulated molecular damage due to mitochondrial ROS has long been thought to drive aging phenotypesin vivo. Here, we test the hypothesis that mitochondrial oxidative stress can promote cellular senescence in vivo and contribute to aging phenotypes in vivo, specifically in the skin. We show that the number of senescent cells, as well as impaired mitochondrial (complex II) activity increase in naturally aged mouse skin. Using a mouse model of genetic Sod2 deficiency, we show that failure to express this important mitochondrial anti-oxidant enzyme also impairs mitochondrial complex II activity, causes nuclear DNA damage, and induces cellular senescence but not apoptosis in the epidermis. Sod2 deficiency also reduced the number of cells and thickness of the epidermis, while increasing terminal differentiation. Our results support the idea that mitochondrial oxidative stress and cellular senescence contribute to aging skin phenotypes in vivo.

Indexed as

AgingAnimalsCell LineCellular SenescenceDNA DamageHumansKeratinocytesMiceMice, KnockoutMitochondriaOxidative StressPhenotypeSkinSuperoxide DismutaseSuperoxide Dismutase 2Superoxide DismutaseSuperoxide Dismutase 2

Identifiers

PMID22278880
PMCPMC3292901
OpenAlexW2161854858

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.