Evidence map›Paper›PMID 31511953›Full record

ArticleNaunyn-Schmiedeberg's archives of pharmacology2020

Normalization of organ bath contraction data for tissue specimen size: does one approach fit all?

Betul R Erdogan, Irem Karaomerlioglu, Zeynep E Yesilyurt, Nihal Ozturk, A Elif Muderrisoglu, Martin C Michel, Ebru Arioglu-Inan

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Article in Naunyn-Schmiedeberg's archives of pharmacology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
–field-weighted citation impact
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

14 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Dog and human bladders have different neurogenic and nicotinic responses in inner versus outer detrusor muscle layers.American journal of physiology. Regulatory, integrative and comparative physiology · 2022
    Article
  6. Article
  7. Experimental biology and medicine (Maywood, N.J.) · 2022
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Concentration-dependent alphaFrontiers in pharmacology · 2021
    Article
  14. Choice of y-axis can mislead readers.Naunyn-Schmiedeberg's archives of pharmacology · 2020
    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

7 authors.

Betul R ErdoganDepartment of Pharmacology, Faculty of Pharmacy, Ankara University, Ankara, Turkey.
Irem KaraomerliogluDepartment of Pharmacology, Faculty of Pharmacy, Ankara University, Ankara, Turkey.
Zeynep E YesilyurtDepartment of Pharmacology, Faculty of Pharmacy, Ankara University, Ankara, Turkey.
Nihal OzturkDepartment of Pharmacology, Faculty of Pharmacy, Ankara University, Ankara, Turkey.
A Elif MuderrisogluDepartment of Pharmacology, Faculty of Pharmacy, Ankara University, Ankara, Turkey.
Martin C MichelDepartment of Pharmacology, Johannes Gutenberg University, Mainz, Germany. marmiche@uni-mainz.de.ORCID http://orcid.org/0000-0003-4161-8467
Ebru Arioglu-InanDepartment of Pharmacology, Faculty of Pharmacy, Ankara University, Ankara, Turkey.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Organ bath experiments are a key technology to assess contractility of smooth muscle. Despite efforts to standardize tissue specimen sizes, they vary to a certain degree. As it appears obvious that a larger piece of tissue should develop greater force, most investigators normalize contraction data for specimen size. However, they lack agreement which parameter should be used as denominator for normalization. A pre-planned analysis of data from a recent study was used to compare denominators used for normalization, i.e., weight, length, and cross-sectional area. To increase robustness, we compared force with denominator in correlation analysis and also coefficient of variation with different denominators. This was done concomitantly with urinary bladder strips and aortic rings and with multiple contractile stimuli. Our urinary bladder data show that normalization for strip weight yielded the tightest but still only moderate correlation (e.g., r

Indexed as

Muscle ContractionAnimalsAortaCarbacholIn Vitro TechniquesMalePhenylephrinePotassium ChlorideRats, Sprague-DawleySpecimen HandlingUrinary BladderCarbacholPhenylephrinePotassium ChlorideAortaCross-sectional areaLengthNormalizationUrinary bladderWeight

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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.