Evidence map›Paper›PMID 24771110›Full record

ArticleMetabolic brain disease2015

Ablation of matrix metalloproteinase-9 gene decreases cerebrovascular permeability and fibrinogen deposition post traumatic brain injury in mice.

Nino Muradashvili, Richard L Benton, Kathryn E Saatman, Suresh C Tyagi, David Lominadze

Open access · greenAbstract read
In one paragraph

Article in Metabolic brain disease, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
1.7field-weighted citation impact, top 18% 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

47 citing papers in PubMed, 67 citations in OpenAlex.

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  16. Tissue factor release following traumatic brain injury drives thrombin generation.Research and practice in thrombosis and haemostasis · 2022
    Article
  17. Article
  18. Article
  19. Blood-Brain Barrier Mechanisms in Stroke and Trauma.Handbook of experimental pharmacology · 2022
    Review
  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.

Nino MuradashviliDepartment of Physiology and Biophysics, School of Medicine, University of Louisville, Louisville, KY, USA.
Richard L Benton
Kathryn E Saatman
Suresh C Tyagi
David Lominadze
University of Louisville · USUniversity of Kentucky · US

Funding

Mechanisms of plasticity and repair after SCIP30GM103507 · NIGMS · UNIVERSITY OF LOUISVILLE · PI WHITTEMORE, SCOTT R · 2012 to 2015
$4.2M
Mechanism of Vascular Remodeling in HyperhomocysteinemiaR01HL071010 · NHLBI · UNIVERSITY OF MISSISSIPPI MEDICAL CENTER · PI TYAGI, SURESH C. · 2002 to 2010
$2.7M
Mechanisms of Homocysteine-Induced Fibrinogen-Amyloid Plaque FormationR01NS084823 · NINDS · UNIVERSITY OF LOUISVILLE · PI LOMINADZE, DAVID, TYAGI, SURESH C. · 2013 to 2017
$2.7M
Hydrogen sulfide mechanism of renal hypertensionR01DK104653 · NIDDK · UNIVERSITY OF LOUISVILLE · PI SEN, UTPAL, TYAGI, SURESH C. · 2015 to 2018
$2.5M
Mitophagic and anti-angiogenic mechanism of heart failureR01HL108621 · NHLBI · UNIVERSITY OF LOUISVILLE · PI TYAGI, SURESH C. · 2011 to 2015
$1.8M
Mechanisms of Cerebral Vascular RemodelingR01NS051568 · NINDS · UNIVERSITY OF LOUISVILLE · PI TYAGI, SURESH C. · 2007 to 2011
$1.6M
NHLBI NIH HHS R01 HL071010NHLBI NIH HHS R01 HL108621NIGMS NIH HHS P30 GM-103507NIGMS NIH HHS P30 GM103507NINDS NIH HHS NS-051568NINDS NIH HHS NS-084823NINDS NIH HHS R01 NS051568NINDS NIH HHS R01 NS084823
6 · The paper itself

Abstract

Traumatic brain injury (TBI) is accompanied with enhanced matrix metalloproteinase-9 (MMP-9) activity and elevated levels of plasma fibrinogen (Fg), which is a known inflammatory agent. Activation of MMP-9 and increase in blood content of Fg (i.e. hyperfibrinogenemia, HFg) both contribute to cerebrovascular disorders leading to blood brain barrier disruption. It is well-known that activation of MMP-9 contributes to vascular permeability. It has been shown that at an elevated level (i.e. HFg) Fg disrupts blood brain barrier. However, mechanisms of their actions during TBI are not known. Mild TBI was induced in wild type (WT, C57BL/6 J) and MMP-9 gene knockout (Mmp9(-/-)) homozygous, mice. Pial venular permeability to fluorescein isothiocyanate-conjugated bovine serum albumin in pericontusional area was observed 14 days after injury. Mice memory was tested with a novel object recognition test. Increased expression of Fg endothelial receptor intercellular adhesion protein-1 and formation of caveolae were associated with enhanced activity of MMP-9 causing an increase in pial venular permeability. As a result, an enhanced deposition of Fg and cellular prion protein (PrP(C)) were found in pericontusional area. These changes were attenuated in Mmp9(-/-) mice and were associated with lesser loss of short-term memory in these mice than in WT mice. Our data suggest that mild TBI-induced increased cerebrovascular permeability enhances deposition of Fg-PrP(C) and loss of memory, which is ameliorated in the absence of MMP-9 activity. Thus, targeting MMP-9 activity and blood level of Fg can be a possible therapeutic remedy to diminish vasculo-neuronal damage after TBI.

Indexed as

AnimalsBlood-Brain BarrierBrain InjuriesCapillariesCerebral CortexCerebral VeinsCerebrovascular CirculationContusionsFibrinogenIntercellular Adhesion Molecule-1MaleMatrix Metalloproteinase 9Memory DisordersMemory, Short-TermMiceMice, Inbred C57BLFibrinogenIntercellular Adhesion Molecule-1Matrix Metalloproteinase 9PrPC Proteins

Identifiers

PMID24771110
PMCPMC4213324
OpenAlexW1969937710

What OpenQuestion holds

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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.