Evidence map›Paper›PMID 19416668›Full record

ArticleExperimental neurology2009

Protease-activated receptor 1-dependent neuronal damage involves NMDA receptor function.

Cecily E Hamill, Guido Mannaioni, Polina Lyuboslavsky, Aristide A Sastre, Stephen F Traynelis

Open access · greenAbstract read
In one paragraph

Article in Experimental neurology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

34 citing papers in PubMed, 55 citations in OpenAlex.

  1. Article
  2. Review
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  6. Review
  7. Article
  8. Article
  9. Review
  10. Review
  11. Review
  12. Targeting PAR1: Now What?Trends in pharmacological sciences · 2017
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
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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 2 countries.

Cecily E HamillDepartment of Pharmacology, Emory University School of Medicine, Rollins Research Center, Atlanta, GA 30322-3090, USA.
Guido Mannaioni
Polina Lyuboslavsky
Aristide A Sastre
Stephen F Traynelis
Emory University · USUniversity of Florence · IT

Funding

MEDICAL SCIENTIST TRAINING PROGRAMT32GM008169 · NIGMS · EMORY UNIVERSITY · PI GROSS, ROBERT E · 1987 to 2021
$20.3M
NMDA RECEPTOR FUNCTION BY SERINE PROTEASE RECEPTORSR01NS039419 · NINDS · EMORY UNIVERSITY · PI TRAYNELIS, STEPHEN F. · 2000 to 2007
$2.6M
The Role of PAR1 in Substantia Nigra PathophysiologyF30NS053062 · NINDS · EMORY UNIVERSITY · PI HAMILL, CECILY E · 2005 to 2007
$125k
NIGMS NIH HHS T32 GM008169NINDS NIH HHS F30 NS053062NINDS NIH HHS NS039419NINDS NIH HHS NS053062NINDS NIH HHS R01 NS039419
6 · The paper itself

Abstract

Protease-activated receptor 1 (PAR1) is a G-protein coupled receptor that is expressed throughout the central nervous system. PAR1 activation by brain-derived as well as blood-derived proteases has been shown to have variable and complex effects in a variety of animal models of neuronal injury and inflammation. In this study, we have evaluated the effects of PAR1 on lesion volume in wild-type or PAR1-/- C57Bl/6 mice subjected to transient occlusion of the middle cerebral artery or injected with NMDA in the striatum. We found that removal of PAR1 reduced infarct volume following transient focal ischemia to 57% of control. Removal of PAR1 or application of a PAR1 antagonist also reduced the neuronal injury associated with intrastriatal injection of NMDA to 60% of control. To explore whether NMDA receptor potentiation by PAR1 activation contributes to the harmful effects of PAR1, we investigated the effect of NMDA receptor antagonists on the neuroprotective phenotype of PAR1-/- mice. We found that MK801 reduced penumbral but not core neuronal injury in mice subjected to transient middle cerebral artery occlusion or intrastriatal NMDA injection. Lesion volumes in both models were not significantly different between PAR1-/- mice treated with and without MK801. Use of the NMDA receptor antagonist and dissociative anesthetic ketamine also renders NMDA-induced lesion volumes identical in PAR1-/- mice and wild-type mice. These data suggest that the ability of PAR1 activation to potentiate NMDA receptor function may underlie its harmful actions during injury.

Indexed as

Analysis of VarianceAnimalsBrain InjuriesCells, CulturedCorpus StriatumDisease Models, AnimalDizocilpine MaleateEmbryo, MammalianExcitatory Amino Acid AgonistsExcitatory Amino Acid AntagonistsFemaleGuanidinesInjections, IntraventricularIschemic Attack, TransientMaleMiceDizocilpine MaleateExcitatory Amino Acid AgonistsExcitatory Amino Acid AntagonistsGuanidinesN-cinnamoyl-4-fluorophenylalanyl-4-guanidinophenylalanyl-leucyl-arginyl-argininamideN-MethylaspartateOligopeptidesPlatelet Aggregation InhibitorsReceptor, PAR-1Receptors, N-Methyl-D-Aspartate

Identifiers

PMID19416668
PMCPMC2679858
OpenAlexW2017554966

What OpenQuestion holds

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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.