Evidence map›Paper›PMID 18796005›Full record

ArticleJournal of neurochemistry2008

Tissue-type plasminogen activator requires a co-receptor to enhance NMDA receptor function.

Andre L Samson, Simon T Nevin, David Croucher, Be'eri Niego, Philip B Daniel, Thomas W Weiss, Eliza Moreno, Denis Monard, Daniel A Lawrence, Robert L Medcalf

Open access · greenAbstract read
In one paragraph

Article in Journal of neurochemistry, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

61 citing papers in PubMed, 119 citations in OpenAlex.

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  19. tPA Deficiency Underlies Neurovascular Coupling Dysfunction by Amyloid-β.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2020
    Article
  20. Article

1 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

10 authors at 6 institutions in 3 countries.

Andre L SamsonAustralian Centre for Blood Diseases, Monash University, AMREP, Melbourne, Victoria, Australia.
Simon T Nevin
David Croucher
Be'eri Niego
Philip B Daniel
Thomas W Weiss
Eliza Moreno
Denis Monard
Daniel A Lawrence
Robert L Medcalf
Monash University · AUFriedrich Miescher Institute · CHAustralian Centre for HIV and Hepatitis Virology Research · AUUniversity of Michigan–Ann Arbor · USUniversity of Queensland · AUUniversity of Wollongong · AU

Funding

tPA and LRP in StrokeP01HL054710 · NHLBI · UNIVERSITY OF MARYLAND BALTIMORE · PI STRICKLAND, DUDLEY K. · 1996 to 2011
$17.3M
Unraveling the role of tPA in the neurovascular unitR01HL055374 · NHLBI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI David Antonetti, Daniel A Lawrence · 1995 to 2026
$8.6M
Thrombotic/Fibrinolytic Balance in Cardiac Transplant VasculopathyP01HL089407 · NHLBI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LAWRENCE, DANIEL A · 2008 to 2012
$7.9M
NHLBI NIH HHS P01 HL054710NHLBI NIH HHS P01 HL089407NHLBI NIH HHS R01 HL055374Wellcome Trust
6 · The paper itself

Abstract

Glutamate is the main excitatory neurotransmitter of the CNS. Tissue-type plasminogen activator (tPA) is recognized as a modulator of glutamatergic neurotransmission. This attribute is exemplified by its ability to potentiate calcium signaling following activation of the glutamate-binding NMDA receptor (NMDAR). It has been hypothesized that tPA can directly cleave the NR1 subunit of the NMDAR and thereby potentiate NMDA-induced calcium influx. In contrast, here we show that this increase in NMDAR signaling requires tPA to be proteolytically active, but does not involve cleavage of the NR1 subunit or plasminogen. Rather, we demonstrate that enhancement of NMDAR function by tPA is mediated by a member of the low-density lipoprotein receptor (LDLR) family. Hence, this study proposes a novel functional relationship between tPA, the NMDAR, a LDLR and an unknown substrate which we suspect to be a serpin. Interestingly, whilst tPA alone failed to cleave NR1, cell-surface NMDARs did serve as an efficient and discrete proteolytic target for plasmin. Hence, plasmin and tPA can affect the NMDAR via distinct avenues. Altogether, we find that plasmin directly proteolyses the NMDAR whilst tPA functions as an indirect modulator of NMDA-induced events via LDLR engagement.

Indexed as

Age FactorsAmyloid beta-Protein PrecursorAnimalsAnimals, NewbornCalciumCells, CulturedCerebral CortexDrug InteractionsFibrinolysinGlutamic AcidGlycineMembrane PotentialsMiceMice, Inbred C57BLNeuronsN-MethylaspartateAmyloid beta-Protein PrecursorCalciumFibrinolysinGlutamic AcidGlycineN-MethylaspartateProtease Nexinsrap GTP-Binding ProteinsReceptors, Cell SurfaceReceptors, N-Methyl-D-AspartateThrombinTissue Plasminogen Activator

Identifiers

PMID18796005
PMCPMC3198853
OpenAlexW1967894882

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.