Evidence map›Paper›PMID 8300843›Full record

ArticleJournal of muscle research and cell motility1993

X-ray diffraction study on mammalian visceral smooth muscles in resting and activated states.

M Watanabe, S Takemori, N Yagi

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Journal of muscle research and cell motility, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.6field-weighted citation impact, top 33% 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

7 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Filament evanescence of myosin II and smooth muscle function.The Journal of general physiology · 2021
    Review
  3. Reply from Chun Y. Seow.The Journal of physiology · 2015
    Article
  4. Article
  5. Article
  6. Article
  7. Plasticity in canine airway smooth muscle.The Journal of general physiology · 1995
    Article
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

3 authors at 2 institutions in 1 country.

M WatanabeDepartment of Physiology, Jikei University School of Medicine, Tokyo, Japan.
S Takemori
N Yagi
Jikei University School of Medicine · JPTohoku University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Structural changes of guinea pig taenia coli and rat anococcygeus muscle during contraction were studied by X-ray diffraction. The diffraction pattern of the taenia coli showed the 14.4-nm myosin reflection, the 5.9-nm actin layer-line and a diffuse equatorial peak at 1/11.4 nm-1. On application of carbachol, the muscle contracted and the intensity of the 14.4-nm reflection showed a concentration-dependent decrease: the maximum decrease was 24% at 2 x 10(-5) M. Such an intensity decrease was not observed in K-contracture (154 mM). The intensity of the 5.9-nm actin layer-line did not change appreciably on activation. The equatorial peak became broader during contraction. The 14.4-nm myosin reflection of the anococcygeus muscle was weak. Its intensity increased by 106% during contraction induced by 2 x 10(-5) M phenylephrine and by 75% during K-contracture. These results suggest that the number of myosin filaments may increase during contraction of rat anococcygeus muscle but not guinea pig taenia coli.

Indexed as

AnimalsCarbacholGuinea PigsMuscle ContractionMuscle RelaxationMuscle, SmoothMyosinsPhenylephrinePhysical ExertionRatsRestVisceraX-Ray DiffractionCarbacholMyosinsPhenylephrine

Identifiers

PMID8300843
OpenAlexW2040079538

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.