Evidence map›Paper›PMID 24614098›Full record

ArticleInternational journal of obesity (2005)2014

Irisin stimulates muscle growth-related genes and regulates adipocyte differentiation and metabolism in humans.

J Y Huh, F Dincer, E Mesfum, C S Mantzoros

2 registry-linked trialsAbstract read
PubMed Publisher
In one paragraph

Article in International journal of obesity (2005), 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 156 papers.

0numbers the graph read from it
0cells of the map it votes in
156citing papers in PubMed
11.8field-weighted citation impact, top 1% 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.

NCT02773771 phase2 / phase3withdrawnnot on this mapstarted 2017, after this paper: background citation

Strategies to Reduce Organic Muscle Atrophy in the Intensive Care Unit (STROMA-ICU)

TypeinterventionalSponsorMassachusetts General HospitalRan2017 to 2019Enrolled0ConditionsMuscle AtrophyArmsbeta-hydroxy-beta-methylbutyrate, Placebo, Vital HP®
NCT05573321 naunknown statusnot on this mapstarted 2023, after this paper: background citation

Effect of Blood Flow Restriction Exercise on Acute Systemic Irisin, Myostatin and Decorin Levels

TypeinterventionalSponsorEge UniversityRan2023 to 2023Enrolled22ConditionsMuscle HypotrophyArmsBFR-RE, HL-RE
3 · Its place in the literature

Who cites it

156 citing papers in PubMed, 308 citations in OpenAlex.

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  3. FNDC5 relates to skeletal muscle IGF-I and mitochondrial function and gene expression in obese men with reduced growth hormone.Growth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society · 2016
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96 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 2 institutions in 1 country.

J Y HuhDivision of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
F DincerDivision of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
E MesfumDivision of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
C S Mantzoros1] Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA [2] Section of Endocrinology, Boston VA Healthcare System, Harvard Medical School, Boston, MA, USA.
Harvard University · USVA Boston Healthcare System · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIrisin is a recently identified exercise-induced myokine suggested to induce browning of white adipocytes. Deficiency of myostatin, and thus stimulation of muscle growth, has also been reported to induce irisin and its precursor FNDC5 expression in muscle and drive the browning of white adipocytes in mice, implying that irisin may be related to muscle growth in addition to its beneficial effects in adipocytes. In humans, the effect of irisin in muscle hypertrophy as well as adipocyte metabolism has not been fully investigated.

methodsPrimary cultured human myocytes/adipocytes and 3T3-L1 cells were used to examine irisin-regulated gene/protein expression. Lipid accumulation, ATP content, glycolysis, lipolysis and metabolite profile were measured in control and irisin-treated (10 and 50 nM) adipocytes.

resultsIn human myocytes, FNDC5 mRNA and irisin secretion were increased during myogenic differentiation, along with PGC1α and myogenin expression. Irisin treatment significantly increased insulin-like growth factor 1 and decreased myostatin gene expression through ERK pathway. PGC1α4, a newly discovered PGC1α isoform specifically related to muscle hypertrophy, was also upregulated. In human adipocytes, irisin induced uncoupling protein 1 and consequently increased adipocyte energy expenditure, expression of metabolic enzymes and metabolite intermediates, resulting in inhibition of lipid accumulation. Irisin and FNDC5 treatment also reduced preadipocyte differentiation, suggesting an additional mechanism in suppressing fat mass.

conclusionsThese results suggest that irisin/FNDC5 has a pleiotropic role in muscle and improvement of adipocyte metabolism in humans.

Indexed as

3T3-L1 CellsAdipocytesAnimalsBiomarkersBlotting, WesternCell DifferentiationCells, CulturedFibronectinsGene Expression RegulationHumansInsulin ResistanceMiceMuscle, SkeletalMyocytes, Smooth MuscleRNA, MessengerBiomarkersFibronectinsFNDC5 protein, humanRNA, Messenger

Identifiers

PMID24614098
OpenAlexW2022352721

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.