Evidence map›Paper›PMID 33983958›Full record

ArticlePloS one2021

Effect of belt electrode-skeletal muscle electrical stimulation on immobilization-induced muscle fibrosis.

Yuichiro Honda, Natsumi Tanaka, Yasuhiro Kajiwara, Yasutaka Kondo, Hideki Kataoka, Junya Sakamoto, Ryuji Akimoto, Atsushi Nawata, Minoru Okita

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 24% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 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

9 authors at 4 institutions in 1 country.

Yuichiro HondaInstitute of Biomedical Sciences (Health Sciences), Nagasaki University, Nagasaki, Japan.ORCID 0000-0002-8664-475X
Natsumi TanakaDepartment of Rehabilitation, Nagasaki University Hospital, Nagasaki, Japan.
Yasuhiro KajiwaraDepartment of Rehabilitation, Nagasaki University Hospital, Nagasaki, Japan.
Yasutaka KondoDepartment of Rehabilitation, Japanese Red Cross Nagasaki Genbaku Hospital, Nagasaki, Japan.
Hideki KataokaDepartment of Physical Therapy Science, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
Junya SakamotoInstitute of Biomedical Sciences (Health Sciences), Nagasaki University, Nagasaki, Japan.ORCID 0000-0001-5621-2756
Ryuji AkimotoResearch and Development Division, HOMER ION Co., Ltd., Shibuya, Tokyo, Japan.
Atsushi NawataMedical Engineering Research Laboratory, ALCARE Co., Ltd., Sumida, Tokyo, Japan.
Minoru OkitaInstitute of Biomedical Sciences (Health Sciences), Nagasaki University, Nagasaki, Japan.
Nagasaki University · JPNagasaki University Hospital · JPJapanese Red Cross Society, Japan · JPShibuya (Japan) · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeMacrophage accumulation in response to decreasing myonuclei may be the major mechanism underlying immobilization-induced muscle fibrosis in muscle contracture, an intervention strategy suppressing these lesions is necessary. Therefore, this research investigated the effect of belt electrode-skeletal muscle electrical stimulation (B-SES), a new electrical stimulation device, to the macrophage accumulation via myonuclei decrease in immobilization-induced muscle fibrosis. MATERIALS AND

methods18 Wistar male rats were divided into the control group, immobilization group (with plaster cast fixation to immobilize the soleus muscles in a shortened position for 2 weeks), and B-SES group (with muscle contractile exercise through B-SES during the immobilization period). B-SES stimulation was performed at a frequency of 50 Hz and an intensity of 4.7 mA, muscle contractile exercise by B-SES was applied to the lower limb muscles for 20 minutes/session (twice a day) for 2 weeks (6 times/week). The bilateral soleus muscles were used for histological, immunohistochemical, biochemical, and molecular biological analyses.

resultsThe number of myonuclei was significantly higher in the B-SES group than in the immobilization group, and there was no significant difference between the B-SES and control groups. The cross-sectional area of type I and II myofibers in the immobilization and B-SES groups was significantly lower than that in the control group, and the cross-sectional area of type I myofibers in the B-SES group was higher than that in the immobilization group. However, Atrogin-1 and MuRF-1 mRNA expression in the immobilization and B-SES groups was significantly higher than those in the control group. Additionally, the number of macrophages, IL-1β, TGF-β1, and α-SMA mRNA expression, and hydroxyproline expression was significantly lower in the control and B-SES groups than those in the immobilization group.

conclusionThis research surmised that muscle contractile exercise through B-SES prevented immobilization-induced muscle fibrosis, and this alteration suppressed the development of muscle contracture.

Indexed as

ImmobilizationActinsAnimalsAnkleChemokine CCL2Electric StimulationElectrodesFibrosisHydroxyprolineInterleukin-1betaJointsMacrophagesMaleMuscle Fibers, SkeletalMuscle, SkeletalRange of Motion, ArticularActa2 protein, ratActinsCcl2 protein, ratChemokine CCL2HydroxyprolineInterleukin-1betaRNA, MessengerTransforming Growth Factor beta1

Identifiers

PMID33983958
PMCPMC8118259
OpenAlexW3163452103

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.