Evidence map›Paper›PMID 27846149›Full record

ArticleMedicine and science in sports and exercise2016

Pyruvate Dehydrogenase Phosphatase Regulatory Gene Expression Correlates with Exercise Training Insulin Sensitivity Changes.

Matthew D Barberio, Kim M Huffman, Mamta Giri, Eric P Hoffman, William E Kraus, Monica J Hubal

Open access · greenAbstract read
In one paragraph

Article in Medicine and science in sports and exercise, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
0.5field-weighted citation impact, top 28% 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

7 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.

  1. Pooled it
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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

6 authors at 2 institutions in 1 country.

Matthew D Barberio1Research Center for Genetic Medicine, Children's National Medical Center, Durham, NC; 2Division of Rheumatology, Department of Medicine, Duke University School of Medicine, Durham, NC; 3Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC; 4Department of Exercise and Nutrition Sciences, George Washington University, WASHINGTON, DC; 5Division of Cardiology, Department of Medicine, Duke University School of Medicine, Durham, NC; and 6Department of Integrative Systems Biology, George Washington University, Washington, DC.
Kim M Huffman
Mamta Giri
Eric P Hoffman
William E Kraus
Monica J Hubal
Children's National · USDuke University · US

Funding

PERIPHERAL EFFECTS OF EXERCISE ON CARDIOVASCULAR HEALTHR01HL057354 · NHLBI · DUKE UNIVERSITY · PI KRAUS, WILLIAM E · 1998 to 2008
$5.5M
Genetics and Genomics of Muscle Postdoctoral Training ProgramT32AR056993 · NIAMS · CHILDREN'S RESEARCH INSTITUTE · PI JAISWAL, JYOTI K, PARTRIDGE, TERENCE A · 2010 to 2019
$2.2M
Mechanisms of Insulin Resistance in Rheumatoid ArthritisK23AR054904 · NIAMS · DUKE UNIVERSITY · PI HUFFMAN, KIM M. · 2008 to 2012
$354k
Molecular remodeling of muscle after exercise trainingF32AR052596 · NIAMS · CHILDREN'S RESEARCH INSTITUTE · PI HUBAL, MONICA J · 2006 to 2009
$139k
NHLBI NIH HHS R01 HL057354NIAMS NIH HHS F32 AR052596NIAMS NIH HHS K23 AR054904NIAMS NIH HHS T32 AR056993
6 · The paper itself

Abstract

purposeWhole body insulin sensitivity (Si) typically improves after aerobic exercise training; however, individual responses can be highly variable. The purpose of this study was to use global gene expression to identify skeletal muscle genes that correlate with exercise-induced Si changes.

methodsLongitudinal cohorts from the Studies of Targeted Risk Reduction Intervention through Defined Exercise were used as Discovery (Affymetrix) and Confirmation (Illumina) of vastus lateralis gene expression profiles. Discovery (n = 39; 21 men) and Confirmation (n = 42; 19 men) cohorts were matched for age (52 ± 8 vs 51 ± 10 yr), body mass index (30.4 ± 2.8 vs 29.7 ± 2.8 kg·m), and V˙O2max (30.4 ± 2.8 vs 29.7 ± 2.8 mL·kg·min). Si was determined via intravenous glucose tolerance test pretraining and posttraining. Pearson product-moment correlation coefficients determined relationships between a) baseline and b) training-induced changes in gene expression and %ΔSi after training.

resultsExpression of 2454 (Discovery) and 1778 genes (Confirmation) at baseline were significantly (P < 0.05) correlated to %ΔSi; 112 genes overlapped. Pathway analyses identified Ca signaling-related transcripts in this 112-gene list. Expression changes of 1384 (Discovery) and 1288 genes (Confirmation) after training were significantly (P < 0.05) correlated to %ΔSi; 33 genes overlapped, representing contractile apparatus of skeletal and smooth muscle genes. Pyruvate dehydrogenase phosphatase regulatory subunit expression at baseline (P = 0.01, r = 0.41) and posttraining (P = 0.01, r = 0.43) were both correlated with %ΔSi.

conclusionsExercise-induced adaptations in skeletal muscle Si are related to baseline levels of Ca-regulating transcripts, which may prime the muscle for adaptation. Relationships between %ΔSi and pyruvate dehydrogenase phosphatase regulatory, a regulatory subunit of the pyruvate dehydrogenase complex, indicate that the Si response is strongly related to key steps in metabolic regulation.

Indexed as

Gene ExpressionCalcium SignalingCardiovascular DiseasesExerciseFemaleHumansInsulin ResistanceLongitudinal StudiesMaleMiddle AgedMuscle, SkeletalObesityPyruvate Dehydrogenase (Lipoamide)-PhosphataseRisk FactorsSedentary BehaviorPyruvate Dehydrogenase (Lipoamide)-Phosphatase

Identifiers

PMID27846149
PMCPMC5141615
OpenAlexW2497058430

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.