Evidence map›Paper›PMID 15360131›Full record

ArticleJournal of muscle research and cell motility2004

Effects of reduced joint mobility on sarcomere length, collagen fibril arrangement in the endomysium, and hyaluronan in rat soleus muscle.

Minoru Okita, Toshiro Yoshimura, Jiro Nakano, Masakatsu Motomura, Katsumi Eguchi

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In one paragraph

Article in Journal of muscle research and cell motility, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 14% 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

39 citing papers in PubMed, 1 synthesis or guideline pooled it, 105 citations in OpenAlex.

  1. Pooled it
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  12. Densification: Hyaluronan Aggregation in Different Human Organs.Bioengineering (Basel, Switzerland) · 2022
    Review
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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

5 authors at 2 institutions in 1 country.

Minoru OkitaDepartment of Physical Therapy, Nagasaki University, School of Health Sciences, 1-7-1 Sakamoto, Japan. minoru@net.nagasaki-u.ac.jp
Toshiro Yoshimura
Jiro Nakano
Masakatsu Motomura
Katsumi Eguchi
Nagasaki University · JPInoue Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Immobilization is often associated with a decrease in muscle elasticity. This condition is called muscle contracture, but the mechanism is not yet clear. We examined changes in ankle joint mobility, sarcomere length, collagen fibril arrangement in the endomysium, and hyaluronic acid (HYA) in muscular tissue 1, 2, 4, 8, and 12 weeks after immobilization of rat soleus muscles in shortened position. Ankle joint mobility decreased with the duration of immobilization. Sarcomere length had shortened 1 week after immobilization, but did not show further change 2, 4, 8, and 12 weeks after immobilization. Collagen fibril arrangement in the endomysium 1 and 2 weeks after immobilization was longitudinal to the axis of the muscle fibers, whereas 4, 8, and 12 weeks after immobilization it was circumferential. HYA in muscular tissue had increased 1 week after immobilization but remained at the same level at weeks 2, 4, 8, and 12. Histochemically, HYA in the endomysium of immobilized muscular tissue was stained more strongly and widely than that in the control tissue. Increased HYA in muscular tissue may induce muscle stiffness, but the significance of how HYA is related to the mechanism of muscle contracture was not clear. The findings suggest that muscle contracture started 1 week after immobilization and increased with the length of immobilization. Consequently, muscle contracture is affected by the shortening muscle fibers during the early stage of immobilization, after which the collagen adapts by the fibril arrangement in the endomysium becoming more circumferential. This change in collagen fibril arrangement may cause advanced muscle contracture in the late stage of immobilization.

Indexed as

AnimalsFibrillar CollagensHistocytochemistryHyaluronic AcidImmobilizationMaleMicroscopy, Electron, ScanningMuscle Fibers, SkeletalMuscle, SkeletalRange of Motion, ArticularRatsRats, WistarSarcomeresTarsal JointsTime FactorsFibrillar CollagensHyaluronic Acid

Identifiers

PMID15360131
OpenAlexW2057369215

What OpenQuestion holds

Textmetadata
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.