Evidence map›Paper›PMID 23020201›Full record

ArticleAging cell2012

Aging leads to a programmed loss of brown adipocytes in murine subcutaneous white adipose tissue.

Nicole H Rogers, Alejandro Landa, Seongjoon Park, Roy G Smith

Abstract read
In one paragraph

Article in Aging cell, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 111 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
111citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 6% 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

111 citing papers in PubMed, 1 synthesis or guideline pooled it, 177 citations in OpenAlex.

  1. Pooled it
  2. Review
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  14. Review
  15. Ucp1 Ablation Improves Skeletal Muscle Glycolytic Function in Aging Mice.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  16. Article
  17. Article
  18. Article
  19. Adipocyte-specific inactivation of NAMPT, a key NADAmerican journal of physiology. Endocrinology and metabolism · 2024
    Article
  20. Article

51 more citing papers are in PubMed but not listed here.

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

4 authors at 1 institution in 1 country.

Nicole H RogersDepartment of Metabolism and Aging, Scripps Research Institute Florida, Jupiter, FL 33458, USA.
Alejandro Landa
Seongjoon Park
Roy G Smith
Scripps Research Institute · US

Funding

Regulatory Role of Growth Hormone Secretagogue ReceptorR01AG019230 · NIA · SCRIPPS RESEARCH INSTITUTE, THE · PI SMITH, ROY G · 2001 to 2012
$3.6M
Systemic Factors that Maintain a Young Liver PhenotypeR01AG029740 · NIA · SCRIPPS RESEARCH INSTITUTE, THE · PI SMITH, ROY G · 2008 to 2012
$1.9M
NIA NIH HHS R01 AG019230NIA NIH HHS R01 AG029740NIA NIH HHS R01AG19230NIA NIH HHS R01AG29740
6 · The paper itself

Abstract

Insulin sensitivity deteriorates with age, but mechanisms remain unclear. Age-related changes in the function of subcutaneous white adipose tissue (sWAT) are less characterized than those in visceral WAT. We hypothesized that metabolic alterations in sWAT, which in contrast to epididymal WAT, harbors a subpopulation of energy-dissipating UCP1+ brown adipocytes, promote age-dependent progression toward insulin resistance. Indeed, we show that a predominant consequence of aging in murine sWAT is loss of 'browning'. sWAT from young mice is histologically similar to brown adipose tissue (multilocular, UCP1+), but becomes morphologically white by 12 months of age. Correspondingly, sWAT expression of ucp1 precipitously declines (~300-fold) between 3 and 12 months. Loss continues into old age (24 months) and is inversely correlated with the development of insulin resistance. Additional age-dependent changes in sWAT include lower expression of adbr3 and higher expression of maoa, suggesting reduced local adrenergic tone as a potential mechanism. Indeed, treatment with a β3-adrenergic agonist to compensate for reduced tone rescues the aged sWAT phenotype. Age-related changes in sWAT are not explained by the differences in body weight; mice subjected to 40% caloric restriction for 12 months are of body weight similar to 3-month-old ad lib fed mice, but display sWAT resembling that of age-matched ad lib fed mice (devoid of brown adipose-like morphology). Overall, findings identify the loss of 'browning' in sWAT as a new aging phenomenon and provide insight into the pathogenesis of age-associated metabolic disease by revealing novel molecular changes tied to systemic metabolic dysfunction.

Indexed as

Adipocytes, BrownAdipose Tissue, BrownAdipose Tissue, WhiteAdrenergic beta-AgonistsAgingAnimalsBody WeightGene ExpressionHumansInsulinInsulin ResistanceIon ChannelsMaleMiceMice, Inbred C57BLMitochondrial ProteinsAdrenergic beta-AgonistsInsulinIon ChannelsMitochondrial ProteinsMonoamine OxidaseReceptors, Adrenergic, beta-3UCP1 protein, humanUcp1 protein, mouseUncoupling Protein 1

Identifiers

PMID23020201
PMCPMC3839316
OpenAlexW2017768553

What Socratic 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 Socratic graph.