Evidence map›Paper›PMID 18816186›Full record

ReviewAntioxidants & redox signaling2009

Modulation of brain hemichannels and gap junction channels by pro-inflammatory agents and their possible role in neurodegeneration.

Juan A Orellana, Pablo J Sáez, Kenji F Shoji, Kurt A Schalper, Nicolás Palacios-Prado, Victoria Velarde, Christian Giaume, Michael V L Bennett, Juan C Sáez

Open access · greenAbstract readReview
In one paragraph

Review in Antioxidants & redox signaling, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 111 papers.

0numbers the graph read from it
0cells of the map it votes in
111citing papers in PubMed
7.0field-weighted citation impact, top 2% 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

111 citing papers in PubMed, 220 citations in OpenAlex.

  1. Article
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  4. Article
  5. Review
  6. Review
  7. Article
  8. Noncanonical functions of adhesion proteins in inflammation.American journal of physiology. Cell physiology · 2024
    Review
  9. Review
  10. Article
  11. Review
  12. Review
  13. Article
  14. Article
  15. Cx43 hemichannels contribute to astrocyte-mediated toxicity in sporadic and familial ALS.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Article

51 more citing papers are in PubMed but not listed here.

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

9 authors at 3 institutions in 3 countries.

Juan A OrellanaDepartamento de Ciencias Fisiológicas, Pontificia Universidad Católica de Chile, Santiago, Chile. jaorella@uc.cl
Pablo J Sáez
Kenji F Shoji
Kurt A Schalper
Nicolás Palacios-Prado
Victoria Velarde
Christian Giaume
Michael V L Bennett
Juan C Sáez
Pontificia Universidad Católica de Chile · CLAlbert Einstein College of Medicine · USCollège de France · FR

Funding

REGULATION OF BCL XL BY CASPASESR01NS037402 · NINDS · JOHNS HOPKINS UNIVERSITY · PI HARDWICK, J. MARIE · 1999 to 2014
$4.5M
Connexins in Ischemia-Induced Neuronal DeathR01NS045287 · NINDS · YESHIVA UNIVERSITY · PI BENNETT, MICHAEL V L · 2003 to 2007
$1.8M
Cx43 Hemichannels: Gating, Modification and FunctionR01NS055363 · NINDS · ALBERT EINSTEIN COLLEGE OF MEDICINE · PI BENNETT, MICHAEL V L · 2007 to 2011
$1.6M
NINDS NIH HHS NS37402NINDS NIH HHS NS45287NINDS NIH HHS R01 NS055363
6 · The paper itself

Abstract

In normal brain, neurons, astrocytes, and oligodendrocytes, the most abundant and active cells express pannexins and connexins, protein subunits of two families forming membrane channels. Most available evidence indicates that in mammals endogenously expressed pannexins form only hemichannels and connexins form both gap junction channels and hemichannels. Whereas gap junction channels connect the cytoplasm of contacting cells and coordinate electric and metabolic activity, hemichannels communicate the intra- and extracellular compartments and serve as a diffusional pathway for ions and small molecules. A subthreshold stimulation by acute pathological threatening conditions (e.g., global ischemia subthreshold for cell death) enhances neuronal Cx36 and glial Cx43 hemichannel activity, favoring ATP release and generation of preconditioning. If the stimulus is sufficiently deleterious, microglia become overactivated and release bioactive molecules that increase the activity of hemichannels and reduce gap junctional communication in astroglial networks, depriving neurons of astrocytic protective functions, and further reducing neuronal viability. Continuous glial activation triggered by low levels of anomalous proteins expressed in several neurodegenerative diseases induce glial hemichannel and gap junction channel disorders similar to those of acute inflammatory responses triggered by ischemia or infectious diseases. These changes are likely to occur in diverse cell types of the CNS and contribute to neurodegeneration during inflammatory process.

Indexed as

AnimalsGap JunctionsHumansNerve DegenerationSignal Transduction

Identifiers

PMID18816186
PMCPMC2713807
OpenAlexW2020025443

What OpenQuestion holds

Textmetadata
LicenceTDM
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.