Evidence map›Paper›PMID 31915055›Full record

ArticleStem cell research & therapy2020

Metformin alleviates muscle wasting post-thermal injury by increasing Pax7-positive muscle progenitor cells.

Yusef Yousuf, Andrea Datu, Ben Barnes, Saeid Amini-Nik, Marc G Jeschke

Open access · goldAbstract read
In one paragraph

Article in Stem cell research & therapy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
3.2field-weighted citation impact, top 7% 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

19 citing papers in PubMed, 33 citations in OpenAlex.

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  14. Metformin and leucine increase satellite cells and collagen remodeling during disuse and recovery in aged muscle.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2021
    Article
  15. Burn-induced hypermetabolism and skeletal muscle dysfunction.American journal of physiology. Cell physiology · 2021
    Review
  16. Short-term metformin ingestion by healthy older adults improves myoblast function.American journal of physiology. Cell physiology · 2021
    Article
  17. Review
  18. PGC-1α-Targeted Therapeutic Approaches to Enhance Muscle Recovery in Aging.International journal of environmental research and public health · 2020
    Review
  19. Review
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

5 authors at 1 institution in 1 country.

Yusef YousufSunnybrook Research Institute, 2075 Bayview Ave., Rm. D704, Toronto, ON, M4N 3M5, Canada.
Andrea DatuSunnybrook Research Institute, 2075 Bayview Ave., Rm. D704, Toronto, ON, M4N 3M5, Canada.
Ben BarnesSunnybrook Research Institute, 2075 Bayview Ave., Rm. D704, Toronto, ON, M4N 3M5, Canada.
Saeid Amini-NikSunnybrook Research Institute, 2075 Bayview Ave., Rm. D704, Toronto, ON, M4N 3M5, Canada. saeid.amininik@utoronto.ca.
Marc G JeschkeSunnybrook Research Institute, 2075 Bayview Ave., Rm. D704, Toronto, ON, M4N 3M5, Canada. marc.jeschke@sunnybrook.ca.ORCID 0000-0003-0870-1664
Sunnybrook Health Science Centre · CA

Funding

Hepatic ER stress contributes to morbidity and mortality after burn injury.R01GM087285 · NIGMS · SUNNYBROOK & WOMEN'S COLL HLTH SCIS CTR · PI BOEHNING, DARREN F, JESCHKE, MARC GERHARD · 2010 to 2018
$1.9M
CIHR 123336NIGMS NIH HHS R01 GM087285
6 · The paper itself

Abstract

backgroundProfound skeletal muscle wasting and weakness is common after severe burn and persists for years after injury contributing to morbidity and mortality of burn patients. Currently, no ideal treatment exists to inhibit muscle catabolism. Metformin is an anti-diabetic agent that manages hyperglycemia but has also been shown to have a beneficial effect on stem cells after injury. We hypothesize that metformin administration will increase protein synthesis in the skeletal muscle by increasing the proliferation of muscle progenitor cells, thus mitigating muscle atrophy post-burn injury.

methodsTo determine whether metformin can attenuate muscle catabolism following burn injury, we utilized a 30% total burn surface area (TBSA) full-thickness scald burn in mice and compared burn injuries with and without metformin treatment. We examined the gastrocnemius muscle at 7 and 14 days post-burn injury.

resultsAt 7 days, burn injury significantly reduced myofiber cross-sectional area (CSA) compared to sham, p < 0.05. Metformin treatment significantly attenuated muscle catabolism and preserved muscle CSA at the sham size. To investigate metformin's effect on satellite cells (muscle progenitors), we examined changes in Pax7, a transcription factor regulating the proliferation of muscle progenitors. Burned animals treated with metformin had a significant increase in Pax7 protein level and the number of Pax7-positive cells at 7 days post-burn, p < 0.05. Moreover, through BrdU proliferation assay, we show that metformin treatment increased the proliferation of satellite cells at 7 days post-burn injury, p < 0.05.

conclusionIn summary, metformin's various metabolic effects and its modulation of stem cells make it an attractive alternative to mitigate burn-induced muscle wasting while also managing hyperglycemia.

Indexed as

AnimalsBurnsHypoglycemic AgentsMaleMetforminMiceMuscle, SkeletalMuscular AtrophyPAX7 Transcription FactorStem CellsHypoglycemic AgentsMetforminPax7 protein, mousePAX7 Transcription FactorBurnFat infiltrationMetforminMuscle wastingPax7Satellite cellsSkeletal muscleThermal injury

Identifiers

PMID31915055
PMCPMC6950874
OpenAlexW3000591551

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.