Evidence map›Paper›PMID 29031727›Full record

ArticleMolecular metabolism2017

Angiopoietin-like protein 4 is an exercise-induced hepatokine in humans, regulated by glucagon and cAMP.

Bodil Ingerslev, Jakob S Hansen, Christoph Hoffmann, Jens O Clemmesen, Niels H Secher, Mika Scheler, Martin Hrabĕ de Angelis, Hans U Häring, Bente K Pedersen, Cora Weigert and 1 more

Open access · goldAbstract read
In one paragraph

Article in Molecular metabolism, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
3.7field-weighted citation impact, top 5% 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

40 citing papers in PubMed, 59 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

11 authors at 6 institutions in 2 countries.

Bodil IngerslevThe Centre of Inflammation and Metabolism, The Centre for Physical Activity Research, Rigshospitalet, Copenhagen University Hospital, Denmark.
Jakob S HansenThe Centre of Inflammation and Metabolism, The Centre for Physical Activity Research, Rigshospitalet, Copenhagen University Hospital, Denmark; Department of Clinical Biochemistry, Rigshospitalet, Copenhagen University Hospital, Denmark.
Christoph HoffmannDivision of Endocrinology, Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University of Tuebingen, Germany.
Jens O ClemmesenDepartment of Hepatology, Rigshospitalet, Copenhagen University Hospital, Denmark.
Niels H SecherDepartment of Anaesthesiology, The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen University Hospital, Denmark.
Mika SchelerInstitute of Experimental Genetics, Helmholtz Center Munich, German Research Center for Enviromental Health Neuherberg, Germany; German Center for Diabetes Research (DZD), Germany.
Martin Hrabĕ de AngelisInstitute of Experimental Genetics, Helmholtz Center Munich, German Research Center for Enviromental Health Neuherberg, Germany; German Center for Diabetes Research (DZD), Germany; Center of Life and Food Sciences Weihenstephan, Technical University Munich, Freising-Weihenstephan, Germany.
Hans U HäringDivision of Endocrinology, Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University of Tuebingen, Germany; German Center for Diabetes Research (DZD), Germany; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Center Munich at the University of Tuebingen, Tuebingen, Germany.
Bente K PedersenThe Centre of Inflammation and Metabolism, The Centre for Physical Activity Research, Rigshospitalet, Copenhagen University Hospital, Denmark.
Cora WeigertDivision of Endocrinology, Diabetology, Angiology, Nephrology, Pathobiochemistry and Clinical Chemistry, Department of Internal Medicine IV, University of Tuebingen, Germany; German Center for Diabetes Research (DZD), Germany; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Center Munich at the University of Tuebingen, Tuebingen, Germany.
Peter PlomgaardThe Centre of Inflammation and Metabolism, The Centre for Physical Activity Research, Rigshospitalet, Copenhagen University Hospital, Denmark; Department of Clinical Biochemistry, Rigshospitalet, Copenhagen University Hospital, Denmark. Electronic address: plomgaard@dadlnet.dk.
Copenhagen University Hospital · DKRigshospitalet · DKUniversity of Tübingen · DEDeutsches Diabetes-Zentrum e.V. · DEHeinrich Heine University Düsseldorf · DEHelmholtz Zentrum München · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveAngiopoietin-like protein-4 (ANGPTL4) is a circulating protein that is highly expressed in liver and implicated in regulation of plasma triglyceride levels. Systemic ANGPTL4 increases during prolonged fasting and is suggested to be secreted from skeletal muscle following exercise.

methodsWe investigated the origin of exercise-induced ANGPTL4 in humans by measuring the arterial-to-venous difference over the leg and the hepato-splanchnic bed during an acute bout of exercise. Furthermore, the impact of the glucagon-to-insulin ratio on plasma ANGPTL4 was studied in healthy individuals. The regulation of ANGPTL4 was investigated in both hepatic and muscle cells.

resultsThe hepato-splanchnic bed, but not the leg, contributed to exercise-induced plasma ANGPTL4. Further studies using hormone infusions revealed that the glucagon-to-insulin ratio is an important regulator of plasma ANGPTL4 as elevated glucagon in the absence of elevated insulin increased plasma ANGPTL4 in resting subjects, whereas infusion of somatostatin during exercise blunted the increase of both glucagon and ANGPTL4. Moreover, activation of the cAMP/PKA signaling cascade let to an increase in ANGPTL4 mRNA levels in hepatic cells, which was prevented by inhibition of PKA. In humans, muscle ANGPTL4 mRNA increased during fasting, with only a marginal further induction by exercise. In human muscle cells, no inhibitory effect of AMPK activation could be demonstrated on ANGPTL4 expression.

conclusionsThe data suggest that exercise-induced ANGPTL4 is secreted from the liver and driven by a glucagon-cAMP-PKA pathway in humans. These findings link the liver, insulin/glucagon, and lipid metabolism together, which could implicate a role of ANGPTL4 in metabolic diseases.

Indexed as

Angiopoietin-Like Protein 4AngiopoietinsCells, CulturedCyclic AMPExerciseGlucagonHumansInsulinLiverMaleMuscle CellsMuscle, SkeletalRNA, MessengerYoung AdultAngiopoietin-Like Protein 4AngiopoietinsANGPTL4 protein, humanCyclic AMPGlucagonInsulinRNA, MessengerDiabetesInsulinLiverMuscleMyokine

Identifiers

PMID29031727
PMCPMC5641605
OpenAlexW2734285800

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.