Evidence map›Paper›PMID 17716744›Full record

ArticleJournal of neuroscience methods2007

Measurement of contractile force of skeletal and extraocular muscles: effects of blood supply, muscle size and in situ or in vitro preparation.

Scott A Croes, Christopher S von Bartheld

Open access · greenAbstract readComparative Study
In one paragraph

Article in Journal of neuroscience methods, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.9field-weighted citation impact, top 21% 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

9 citing papers in PubMed, 17 citations in OpenAlex.

  1. Article
  2. Measurement of Murine Neuromuscular Function Using the In Situ Preparation.Methods in molecular biology (Clifton, N.J.) · 2024
    Article
  3. Cytoskeletal Proteins in Myotendinous Junctions of Human Extraocular Muscles.Investigative ophthalmology & visual science · 2021
    Article
  4. Article
  5. Article
  6. The effects of bupivacaine injection and oral nitric oxide on extraocular muscle in the rabbit.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2013
    Article
  7. Article
  8. Article
  9. 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

2 authors at 1 institution in 1 country.

Scott A CroesDepartment of Physiology & Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA.
Christopher S von Bartheld
University of Nevada, Reno · US

Funding

TROPHIC MANIPULATIONS OF THE OCULOMOTOR SYSTEMR01EY012841 · NEI · UNIVERSITY OF NEVADA RENO · PI VON BARTHELD, CHRISTOPHER S · 2000 to 2010
$2.0M
NEI NIH HHS EY 12841NEI NIH HHS R01 EY012841
6 · The paper itself

Abstract

Contractile forces can be measured in situ and in vitro. To maintain metabolic viability with sufficient diffusion of oxygen, established guidelines for in vitro skeletal muscle preparations recommend use of relatively thin muscles (< or =1.25 mm thick). Nevertheless, forces of thin extraocular muscles vary substantially between studies. Here, we examined parameters that affect force measurements of in situ and in vitro preparations, including blood supply, nerve stimulation, direct muscle stimulation, muscle size, oxygenated or non-oxygenated buffer solutions and the time after interruption of vascular circulation. We found that the absolute forces of extraocular muscle are substantially lower when examined in vitro. In vitro preparation of 0.58 mm thick extraocular muscle from 3-week-old birds underestimated contractile function, but not of thinner (0.33 mm) muscle from 2-day-old birds. Our study shows that the effective criteria for functional viability, tested in vitro, differ between extraocular and other skeletal muscle. We conclude that contractile force of extraocular muscles will be underestimated by between 10 and 80%, when measurements are made after cessation of blood supply (at 5-40 min). The mechanisms responsible for the declining values for force measurements are discussed, and we make specific recommendations for obtaining valid measurements of contractile force.

Indexed as

AnimalsCell SurvivalChickensElectric StimulationFemaleIn Vitro TechniquesIschemiaMechanicsMitochondria, MuscleMotor NeuronsMuscle ContractionMuscle FatigueMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMuscle, SkeletalMuscle Strength

Identifiers

PMID17716744
PMCPMC2739692
OpenAlexW1996618777

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.