Evidence map›Paper›PMID 19031439›Full record

ArticleGlia2009

Sigma receptors suppress multiple aspects of microglial activation.

Aaron A Hall, Yelenis Herrera, Craig T Ajmo, Javier Cuevas, Keith R Pennypacker

Open access · greenAbstract read
In one paragraph

Article in Glia, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

56 citing papers in PubMed, 118 citations in OpenAlex.

  1. Dextromethorphan attenuated inflammation and combined opioid use in humans undergoing methadone maintenance treatment.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2012
    Trial
  2. Review
  3. Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. Review
  10. Receptors on Microglia.Advances in neurobiology · 2024
    Review
  11. Review
  12. SIGMAR1 Confers Innate Resilience against Neurodegeneration.International journal of molecular sciences · 2023
    Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Review
  18. Review
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  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

5 authors at 2 institutions in 1 country.

Aaron A HallDepartment of Molecular Pharmacology and Physiology, University of South Florida College of Medicine, Tampa, Florida 33612-4799, USA.
Yelenis Herrera
Craig T Ajmo
Javier Cuevas
Keith R Pennypacker
University of South Florida · USFlorida College · US

Funding

Cord Blood is Neuroprotective in a Rat Model of StrokeR01NS052839 · NINDS · UNIVERSITY OF SOUTH FLORIDA · PI WILLING, ALISON E · 2006 to 2010
$1.8M
NINDS NIH HHS R01 NS052839NINDS NIH HHS R01NS052839
6 · The paper itself

Abstract

During brain injury, microglia become activated and migrate to areas of degenerating neurons. These microglia release proinflammatory cytokines and reactive oxygen species causing additional neuronal death. Microglia express high levels of sigma receptors, however, the function of these receptors in microglia and how they may affect the activation of these cells remain poorly understood. Using primary rat microglial cultures, it was found that sigma receptor activation suppresses the ability of microglia to rearrange their actin cytoskeleton, migrate, and release cytokines in response to the activators adenosine triphosphate (ATP), monocyte chemoattractant protein 1 (MCP-1), and lipopolysaccharide (LPS). Next, the role of sigma receptors in the regulation of calcium signaling during microglial activation was explored. Calcium fluorometry experiments in vitro show that stimulation of sigma receptors suppressed both transient and sustained intracellular calcium elevations associated with the microglial response to these activators. Further experiments showed that sigma receptors suppress microglial activation by interfering with increases in intracellular calcium. In addition, sigma receptor activation also prevented membrane ruffling in a calcium-independent manner, indicating that sigma receptors regulate the function of microglia via multiple mechanisms.

Indexed as

ActinsAdenosine TriphosphateAnimalsCalciumCalcium SignalingCell MembraneCell MovementCells, CulturedChemokine CCL2CytokinesCytoskeletonFluorometryIonomycinLipopolysaccharidesMicrogliaNitric OxideActinsAdenosine TriphosphateCalciumCcl2 protein, ratChemokine CCL2CytokinesIonomycinLipopolysaccharidesNitric OxideReceptors, sigma

Identifiers

PMID19031439
PMCPMC2692292
OpenAlexW2084263537

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.