Evidence map›Paper›PMID 22850938›Full record

ReviewThe Journal of membrane biology2012

Connexin- and pannexin-based channels in normal skeletal muscles and their possible role in muscle atrophy.

Luis A Cea, Manuel A Riquelme, Bruno A Cisterna, Carlos Puebla, José L Vega, Maximiliano Rovegno, Juan C Sáez

Open access · greenAbstract readReview
PubMed Publisher
In one paragraph

Review in The Journal of membrane biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
2.7field-weighted citation impact, top 9% 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

26 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. CaNeuroscience letters · 2021
    Review
  5. Review
  6. Article
  7. Review
  8. Article
  9. Review
  10. Connexins and Pannexins in Bone and Skeletal Muscle.Current osteoporosis reports · 2017
    Review
  11. Single-cell Microinjection for Cell Communication Analysis.Journal of visualized experiments : JoVE · 2017
    Article
  12. Pannexin 1 Modulates Axonal Growth in Mouse Peripheral Nerves.Frontiers in cellular neuroscience · 2017
    Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. The pannexins: past and present.Frontiers in physiology · 2014
    Review
  18. Review
  19. Pannexin 1 channels in skeletal muscles.Frontiers in physiology · 2014
    Article
  20. Review
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 at 1 institution in 1 country.

Luis A CeaDepartamento de Fisiología, Pontificia Universidad Católica de Chile, Alameda 340, Santiago, Chile, lacea@uc.cl.
Manuel A Riquelme
Bruno A Cisterna
Carlos Puebla
José L Vega
Maximiliano Rovegno
Juan C Sáez
Pontificia Universidad Católica de Chile · CL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Precursor cells of skeletal muscles express connexins 39, 43 and 45 and pannexin1. In these cells, most connexins form two types of membrane channels, gap junction channels and hemichannels, whereas pannexin1 forms only hemichannels. All these channels are low-resistance pathways permeable to ions and small molecules that coordinate developmental events. During late stages of skeletal muscle differentiation, myofibers become innervated and stop expressing connexins but still express pannexin1 hemichannels that are potential pathways for the ATP release required for potentiation of the contraction response. Adult injured muscles undergo regeneration, and connexins are reexpressed and form membrane channels. In vivo, connexin reexpression occurs in undifferentiated cells that form new myofibers, favoring the healing process of injured muscle. However, differentiated myofibers maintained in culture for 48 h or treated with proinflammatory cytokines for less than 3 h also reexpress connexins and only form functional hemichannels at the cell surface. We propose that opening of these hemichannels contributes to drastic changes in electrochemical gradients, including reduction of membrane potential, increases in intracellular free Ca(2+) concentration and release of diverse metabolites (e.g., NAD(+) and ATP) to the extracellular milieu, contributing to multiple metabolic and physiologic alterations that characterize muscles undergoing atrophy in several acquired and genetic human diseases. Consequently, inhibition of connexin hemichannels expressed by injured or denervated skeletal muscles might reduce or prevent deleterious changes triggered by conditions that promote muscle atrophy.

Indexed as

Ion Channel GatingModels, BiologicalAnimalsConnexinsHumansMuscle, SkeletalMuscular AtrophyNerve Tissue ProteinsReference ValuesConnexinsNerve Tissue ProteinsPANX1 protein, human

Identifiers

PMID22850938
OpenAlexW2057525239

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.