Evidence map›Paper›PMID 29150696›Full record

ArticleDiabetologia2018

Impact of prolonged overfeeding on skeletal muscle mitochondria in healthy individuals.

Frederico G S Toledo, Darcy L Johannsen, Jeffrey D Covington, Sudip Bajpeyi, Bret Goodpaster, Kevin E Conley, Eric Ravussin

Registry-linked trialOpen access · bronzeAbstract read
In one paragraph

Article in Diabetologia, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01672632 (Fat Cell Size and Overfeeding and Etopic Study), which is not on this map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.1field-weighted citation impact, top 22% 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.

NCT01672632 nacompletednot on this map

Fat Cell Size and Overfeeding and Etopic Study

TypeinterventionalSponsorPennington Biomedical Research CenterRan2008 to 2020Enrolled40ConditionsOver EatingArmsOverfeeding
3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 20 citations in OpenAlex.

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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 4 institutions in 1 country.

Frederico G S ToledoDivision of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh School of Medicine, 200 Lothrop Street, BST W1054, Pittsburgh, PA, 15261, USA. toledofs@upmc.edu.
Darcy L JohannsenPennington Biomedical Research Center, Baton Rouge, LA, USA.
Jeffrey D CovingtonPennington Biomedical Research Center, Baton Rouge, LA, USA.
Sudip BajpeyiPennington Biomedical Research Center, Baton Rouge, LA, USA.
Bret GoodpasterTranslational Research Institute for Metabolism and Diabetes, Orlando, FL, USA.
Kevin E ConleyUniversity of Washington Medical Center, Seattle, WA, USA.
Eric RavussinPennington Biomedical Research Center, Baton Rouge, LA, USA.
Pennington Biomedical Research Center · USTranslational Research Institute for Metabolism and Diabetes · USUniversity of Pittsburgh · USUniversity of Washington Medical Center · US

Funding

Vector and Transgenic Mouse CoreP30DK017047 · NIDDK · UNIVERSITY OF WASHINGTON · PI Tomas Vaisar · 1986 to 2026
$41.4M
Research BaseP30DK072476 · NIDDK · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI Peter Todd Katzmarzyk · 2005 to 2026
$26.5M
Fat Cell Size, Overfeeding & Ectopic FatR01DK060412 · NIDDK · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI RAVUSSIN, ERIC · 2001 to 2011
$5.4M
The role of mitochondrial energetics in adaptive thermogenesis with overfeedingK01DK089005 · NIDDK · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI JOHANNSEN, DARCY LARAE · 2010 to 2014
$574k
NIDDK NIH HHS DK89005NIDDK NIH HHS K01 DK089005NIDDK NIH HHS P30 DK072476NIDDK NIH HHS R01 DK060412
6 · The paper itself

Abstract

aims/hypothesesReduced mitochondrial capacity in skeletal muscle has been observed in obesity and type 2 diabetes. In humans, the aetiology of this abnormality is not well understood but the possibility that it is secondary to the stress of nutrient overload has been suggested. To test this hypothesis, we examined whether sustained overfeeding decreases skeletal muscle mitochondrial content or impairs function.

methodsTwenty-six healthy volunteers (21 men, 5 women, age 25.3 ± 4.5 years, BMI 25.5 ± 2.4 kg/m

resultsWith overfeeding, volunteers gained 7.7 ± 1.8 kg (% change 9.8 ± 2.3). Overfeeding increased fasting NEFA, LDL-cholesterol and insulin concentrations. Indirect calorimetry showed a shift towards greater reliance on lipid oxidation. In skeletal muscle tissue, overfeeding increased ceramide content, lipid droplet content and perilipin-2 mRNA expression. Phosphorylation of AMP-activated protein kinase was decreased. Overfeeding increased mRNA expression of certain genes coding for mitochondrial proteins (CS, OGDH, CPT1B, UCP3, ANT1). Despite the stress of nutrient overload, mitochondrial content and mitochondrial respiration in muscle did not change after overfeeding. Similarly, overfeeding had no effect on either the emission of reactive oxygen species or on mitochondrial function in vivo. CONCLUSIONS/

interpretationSkeletal muscle mitochondria are significantly resilient to nutrient overload. The lower skeletal muscle mitochondrial oxidative capacity in human obesity is likely to be caused by reasons other than nutrient overload per se.

trial registrationClinicalTrials.gov NCT01672632.

Indexed as

AdultBiopsyCholesterol, LDLDiet, High-FatEnergy MetabolismFatty Acids, NonesterifiedFemaleHealthy VolunteersHumansInsulinLipid MetabolismMaleMitochondria, MuscleMuscle, SkeletalYoung AdultCholesterol, LDLFatty Acids, NonesterifiedInsulinHumanInsulin resistanceInsulin sensitivityMitochondriaObesity

Identifiers

PMID29150696
PMCPMC5770194
OpenAlexW2770933896

What OpenQuestion holds

Textmetadata
LicenceTDM
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.