Evidence map›Paper›PMID 9742453›Full record

ArticleJournal of muscle research and cell motility1998

h1- and h2-calponins are not essential for norepinephrine- or sodium fluoride-induced contraction of rat aortic smooth muscle.

R Nigam, C R Triggle, J P Jin

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Journal of muscle research and cell motility, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
0.6field-weighted citation impact, top 35% 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

21 citing papers in PubMed, 32 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Evolution and function of calponin and transgelin.Frontiers in cell and developmental biology · 2023
    Review
  5. Article
  6. Calponin 1 contributes to myofibroblast differentiation of human pleural mesothelial cells.American journal of physiology. Lung cellular and molecular physiology · 2022
    Article
  7. A rapid degradation of calponin 2 is required for cytokinesis.American journal of physiology. Cell physiology · 2021
    Article
  8. Downregulation of calponin 2 contributes to the quiescence of lung macrophages.American journal of physiology. Cell physiology · 2019
    Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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 2 countries.

R NigamDepartment of Biochemistry & Molecular Biology, University of Calgary Faculty of Medicine, Alberta, Canada.
C R Triggle
J P Jin
Case Western Reserve University · USUniversity of Calgary · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To investigate the controversial issue concerning the role of calponin in smooth muscle contraction, this study examined the relationship between smooth muscle calponin and the contraction of aortic rings from different strains of rats: Sprague-Dawley (SD), Wistar, and Wistar Kyoto (WKY). Western blot analysis demonstrated that h1- and h2-calponins are present in aortic smooth muscle from adult SD rats but not Wistar or WKY rats. Nevertheless, h1-calponin is detectable in stomach from Wistar rats, although at a much lower level compared with that in the SD rat stomach. This suggests that a repressed expression of the gene, instead of a simple null mutation, may have caused its absence from the aortic smooth muscle. Despite the presence or absence of calponin, the aortic smooth muscles from the different strains of rats all develop contractions in response to the physiological agonist norepinephrine (NE) and following activation with the plasma membrane receptor-independent NaF induction. The data indicate that h1- and h2-calponins are not essential for NE- and NaF-induced contractions in aortic smooth muscle. The calponin-positive adult SD rat aorta was found to be more sensitive in contractile response to NE and NaF inductions compared with the calponin-negative rat aortae. This may imply a potential modulator function of calponin in the contraction of smooth muscle, whereas other contractile protein isoform differences between these rat strains may also play a role.

Indexed as

AnimalsAorta, ThoracicCalcium-Binding ProteinsCalponinsCattleFemaleIn Vitro TechniquesMiceMicrofilament ProteinsMuscle ContractionMuscle ProteinsMuscle, Smooth, VascularNorepinephrineRatsRats, Inbred WKYRats, Sprague-DawleyCalcium-Binding ProteinsCalponinsMicrofilament ProteinsMuscle ProteinsNorepinephrineSodium Fluoride

Identifiers

PMID9742453
OpenAlexW348739991

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.