Evidence map›Paper›PMID 24276464›Full record

ArticleThe Journal of clinical endocrinology and metabolism2014

Adipocyte mitochondrial function is reduced in human obesity independent of fat cell size.

Xiao Yin, Ian R Lanza, James M Swain, Michael G Sarr, K Sreekumaran Nair, Michael D Jensen

2 registry-linked trialsOpen access · bronzeAbstract read
In one paragraph

Article in The Journal of clinical endocrinology and metabolism, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 123 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
123citing papers in PubMed, 3 pooled it
5.3field-weighted citation impact, top 4% 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.

NCT03119350 nacompletednot on this mapstarted 2016, after this paper: background citation

Mitochondrial Energy Metabolism in Obese Women Undergoing Concurrent Physical Training

TypeinterventionalSponsorUniversity of Sao PauloRan2016 to 2016Enrolled14ConditionsMetabolism Disorder, Mitochondrial Alteration, Physical Activity, ObesityArmsPhysical Training
NCT04279600 nacompletednot on this mapstarted 2017, after this paper: background citation

Taurine Supplementation and Physical Training Effects on Adipose Tissue Mitochondrial Energy Metabolism, and Blood Inflammation and Oxidative Stress in Obese Women

TypeinterventionalSponsorUniversity of Sao PauloRan2017 to 2018Enrolled24ConditionsObesityArmsTaurine, Placebo, Exercise training
3 · Its place in the literature

Who cites it

123 citing papers in PubMed, 3 syntheses or guidelines pooled it, 218 citations in OpenAlex.

  1. Adipose Tissue Dysfunction in Polycystic Ovary Syndrome.The Journal of clinical endocrinology and metabolism · 2023
    Pooled it
  2. Human studies of mitochondrial biology demonstrate an overall lack of binary sex differences: A multivariate meta-analysis.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2022
    Pooled it
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  16. Coenzyme Q10 and Obesity: An Overview.Antioxidants (Basel, Switzerland) · 2025
    Review
  17. Obesity accelerates cardiovascular ageing.European heart journal · 2025
    Review
  18. Metabolic Messengers: oestradiol.Nature metabolism · 2025
    Review
  19. Article
  20. Understanding Adipose Tissue Dysfunction.Journal of obesity & metabolic syndrome · 2024
    Review

63 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

6 authors at 3 institutions in 2 countries.

Xiao YinEndocrine Research Unit (I.R.L., K.S.N., M.D.J.), Mayo Clinic, Rochester, Minnesota 55905; Department of Surgery (J.M.S., M.G.S.), Mayo Clinic, Rochester, Minnesota 55905; and Department of Endocrinology (X.Y.), Shandong University Affiliated Jinan Central Hospital, Jinan, 250013 China.
Ian R Lanza
James M Swain
Michael G Sarr
K Sreekumaran Nair
Michael D Jensen
Mayo Clinic in Florida · USMayo Clinic · USJinan Central Hospital · CN

Funding

MAYO CLINIC CENTER FOR TRANSLATIONAL SCIENCE ACTIVITIESUL1RR024150 · NCRR · MAYO CLINIC ROCHESTER · PI RIZZA, ROBERT A. · 2006 to 2011
$66.4M
Mayo Clinic Center for Translational Science ActivitiesUL1TR000135 · NCATS · MAYO CLINIC ROCHESTER · PI KHOSLA, SUNDEEP · 2012 to 2015
$41.2M
PILOT AND FEASIBILTY PROGRAMP30DK084567 · NIDDK · MAYO CLINIC ROCHESTER · PI GREGORY J. GORES · 2009 to 2026
$22.2M
Obesity and Energy Metabolism CoreP30DK050456 · NIDDK · UNIVERSITY OF MINNESOTA TWIN CITIES · PI BERNLOHR, DAVID A · 1995 to 2015
$17.0M
REGIONAL FATTY ACID METABOLISM IN HUMANSR01DK045343 · NIDDK · MAYO CLINIC ROCHESTER · PI MICHAEL D. JENSEN · 1992 to 2026
$12.9M
FFA METABOLISM IN DIFFERENT TYPES OF HUMAN OBESITYR01DK040484 · NIDDK · MAYO CLINIC ROCHESTER · PI MICHAEL D. JENSEN · 1993 to 2026
$8.2M
IN VIVO REGULATION OF PROTEIN TURNOVER BY HORMONESR01DK041973 · NIDDK · UNIVERSITY OF VERMONT &ST AGRIC COLLEGE · PI NAIR, K SREEKUMARAN · 1989 to 2014
$7.3M
Free Fatty Acid Metabolism in Different Types of Human ObesityR37DK040484 · NIDDK · MAYO CLINIC ROCHESTER · PI JENSEN, MICHAEL D. · 2003 to 2012
$4.1M
FFA METABOLISM IN DIFFERENT TYPES OF HUMAN OBESITYR29DK040484 · NIDDK · MAYO CLINIC COLL OF MEDICINE, ROCHESTER · PI JENSEN, MICHAEL D. · 1988 to 1992
–
NCRR NIH HHS 1 UL1 RR024150NCRR NIH HHS UL1 RR024150NIDDK NIH HHS DK40484NIDDK NIH HHS DK45343NIDDK NIH HHS DK50456NIDDK NIH HHS P30 DK050456NIDDK NIH HHS P30 DK084567NIDDK NIH HHS R01 DK040484NIDDK NIH HHS R01 DK041973NIDDK NIH HHS R01 DK045343NIDDK NIH HHS R01DK41973NIDDK NIH HHS R37 DK040484
6 · The paper itself

Abstract

contextIt has been suggested that mitochondrial dysfunction in adipocytes contributes to obesity-related metabolic complications. However, obesity results in adipocyte hypertrophy, and large and small adipocytes from the same depot have different characteristics, raising the possibility that obesity-related mitochondrial defects are an inherent function of large adipocytes.

objectiveOur goal was to examine whether obesity, independent of fat cell size and fat depot, is associated with mitochondria dysfunction.

designWe compared adipocyte mitochondrial function using a cross-sectional comparison study design.

settingThe studies were performed at Mayo Clinic, an academic medical center. PATIENTS OR OTHER

participantsOmental and/or abdominal subcutaneous adipose samples were collected from 20 age-matched obese and nonobese nondiabetic men and women undergoing either elective abdominal surgery or research needle biopsy.

interventionInterventions were not conducted as part of these studies.

main outcome measuresWe measured mitochondrial DNA abundance, oxygen consumption rates, and citrate synthase activity from populations of large and small adipocytes (separated with differential floatation).

resultsFor both omental and subcutaneous adipocytes, at the cell and organelle level, oxygen consumption rates and citrate synthase activity were significantly reduced in cells from obese compared with nonobese volunteers, even when matched for cell size by comparing large adipocytes from nonobese and small adipocytes from obese. Adipocyte mitochondrial content was not significantly different between obese and nonobese volunteers. Mitochondrial function and content parameters were not different between small and large cells, omental, and subcutaneous adipocytes from the same person.

conclusionAdipocyte mitochondrial oxidative capacity is reduced in obese compared with nonobese adults and this difference is not due to cell size differences. Adipocyte mitochondrial dysfunction in obesity is therefore related to overall adiposity rather than adipocyte hypertrophy.

Indexed as

Cell SizeAdipocytesAdultAgedFemaleHumansMaleMiddle AgedMitochondriaObesityOxygen ConsumptionSubcutaneous Fat

Identifiers

PMID24276464
PMCPMC3913808
OpenAlexW2140053497

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.