Evidence map›Paper›PMID 21756907›Full record

ArticleExperimental neurology2011

Matrix metalloproteinase-9 controls proliferation of NG2+ progenitor cells immediately after spinal cord injury.

Huaqing Liu, Veronica I Shubayev

Open access · greenAbstract read
In one paragraph

Article in Experimental neurology, 2011. 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
2.1field-weighted citation impact, top 13% 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, 41 citations in OpenAlex.

  1. NG2 Glia and Cellular Crosstalk in Health and Disease: Focus on Spinal Cord Injury.Pathophysiology : the official journal of the International Society for Pathophysiology · 2026
    Review
  2. Review
  3. Proteolysis: a key post-translational modification regulating proteoglycans.American journal of physiology. Cell physiology · 2022
    Review
  4. Extracellular Matrix in Neural Plasticity and Regeneration.Cellular and molecular neurobiology · 2022
    Review
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  19. Elevated MMP-9 in the lumbar cord early after thoracic spinal cord injury impedes motor relearning in mice.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2013
    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

2 authors at 2 institutions in 1 country.

Huaqing LiuDepartment of Anesthesiology at the University of California, San Diego, La Jolla, CA, USA.
Veronica I Shubayev
University of California, San Diego · USVA San Diego Healthcare System · US

Funding

Matrix metalloproteinases as biomarkers of neurodegenerationR21NS060307 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI SHUBAYEV, VERONICA · 2007 to 2008
$425k
BLRD VA I01 BX000638NINDS NIH HHS R21 NS060307NINDS NIH HHS R21NS060307
6 · The paper itself

Abstract

We have demonstrated that overcoming matrix metalloproteinase (MMP)-mediated suppression of glial proliferation stimulates axonal regeneration in the peripheral nervous system. The regenerative capacity of the adult CNS in response to injury and demyelination depends on the ability of multipotent glial NG2+ progenitor cells to proliferate and mature, mainly into oligodendrocytes. Herein, we have established the important role of MMPs, specifically MMP-9, in regulation of NG2+ cell proliferation in injured spinal cord. Targeting transiently induced MMP-9 using acute MMP-9/2 inhibitor (SB-3CT) therapy for two days after T9-10 spinal cord dorsal hemisection produced a significant increase in mitosis (assessed by bromodeoxyuridine incorporation) of NG2+ cells but not GFAP+astrocytes and Iba-1+ microglia and/or macrophages. Acute MMP-9/2 blockade reduced the shedding of the NG2 proteoglycan and of the NR1 subunit of the N-methyl D-aspartate (NMDA) receptor, whose decline is believed to accompany NG2+ cell maturation into OLs. Increase in post-mitotic oligodendrocytes during remyelination and improved myelin neuropathology in the hemisected spinal cord were accompanied by locomotion and somatosensory recovery after acute MMP-9/2 inhibition. Collectively, these data establish a novel role for MMPs in regulation of NG2+ cell proliferation in the damaged CNS, and a long-term benefit of acute MMP-9 block after SCI.

Indexed as

AnimalsAntigensCell ProliferationChondroitin Sulfate Proteoglycan 4FemaleHeterocyclic Compounds, 1-RingMatrix Metalloproteinase 9Motor ActivityNeural Stem CellsNeurogliaProteoglycansRatsRats, Sprague-DawleyRecovery of FunctionSpinal CordSpinal Cord InjuriesAntigensChondroitin Sulfate Proteoglycan 4Heterocyclic Compounds, 1-RingMatrix Metalloproteinase 9ProteoglycansSB 3CT compoundSulfones

Identifiers

PMID21756907
PMCPMC3171631
OpenAlexW1983603413

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.