Evidence map›Paper›PMID 21884701›Full record

ArticleJournal of molecular and cellular cardiology2011

MMPs 2 and 9 are essential for coronary collateral growth and are prominently regulated by p38 MAPK.

Tracy Dodd, Rashmi Jadhav, Luke Wiggins, James Stewart, Erika Smith, James C Russell, Petra Rocic

Abstract read
In one paragraph

Article in Journal of molecular and cellular cardiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

27 citing papers in PubMed, 42 citations in OpenAlex.

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  15. Elevated 20-HETE impairs coronary collateral growth in metabolic syndrome via endothelial dysfunction.American journal of physiology. Heart and circulatory physiology · 2017
    Article
  16. Article
  17. Article
  18. Review
  19. Role of MMP2 and MMP9 in TRPV4-induced lung injury.American journal of physiology. Lung cellular and molecular physiology · 2014
    Article
  20. miR-21 normalizes vascular smooth muscle proliferation and improves coronary collateral growth in metabolic syndrome.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2014
    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

7 authors at 3 institutions in 2 countries.

Tracy DoddDepartment of Biochemistry and Molecular Biology, University of South Alabama, Mobile, AL 36688, USA.
Rashmi Jadhav
Luke Wiggins
James Stewart
Erika Smith
James C Russell
Petra Rocic
University of South Alabama · USNationwide Children's Hospital · USUniversity of Alberta · CA

Funding

Regulation of Coronary Collateral Growth in the Metabolic SyndromeR01HL093052 · NHLBI · UNIVERSITY OF SOUTH ALABAMA · PI ROCIC, PETRA · 2008 to 2018
$3.7M
NHLBI NIH HHS R01 HL093052
6 · The paper itself

Abstract

Transient, repetitive ischemia (RI) stimulates coronary collateral growth (CCG) in normal, healthy (SD) rats, which requires p38 MAPK activation. In contrast, RI does not induce CCG in the metabolic syndrome (JCR) rats, which is associated with lack of p38 MAPK activation. The functional consequences of p38 MAPK activation in CCG remain unknown. Theoretically, effective collateral growth would require extracellular matrix remodeling; however, direct assessment as well as identification of proteases responsible for this degradation are lacking. In this study, we investigated the role of p38 MAPK in the regulation of matrix metalloproteinases 2 and 9 (MMPs 2 and 9) and their requirement for CCG in SD vs. JCR rats. The rats underwent the RI protocol (8 LAD occlusions, 40s each, every 20min, in 8h cycles for 0, 3, 6, or 9days). MMP expression was measured in the ischemic, collateral-dependent zone (CZ) and the normal zone (NZ) by Western blot, and MMP activity by zymography. Expression and activation of MMP 2 and 9 were significantly increased (~3.5 fold) on day 3 of RI in the CZ of SD rats. In vivo p38 MAPK inhibition completely blocked RI-induced MMP 2 and 9 expression and activation. MMP activation correlated with increased degradation of components of the basement membrane and the vascular elastic laminae: elastin (~3 fold), laminin (~3 fold) and type IV collagen (~2 fold). This was blocked by MMP 2 and 9 inhibition, which also abolished RI-induced CCG. In contrast, in JCR rats, RI did not induce expression or activation of MMP 2 or 9 and there was no associated degradation of elastin, laminin or type IV collagen. In conclusion, MMP 2 and 9 activation is essential for CCG and is mediated, in part, by p38 MAPK. Furthermore, compromised CCG in the metabolic syndrome may be partially due to the lack of p38 MAPK-dependent activation of MMP 2 and 9 and resultant decreased extracellular matrix degradation.

Indexed as

Collateral CirculationAnimalsCollagen Type IVCoronary VesselsElastinEnzyme ActivationImidazolesLamininMaleMatrix Metalloproteinase 2Matrix Metalloproteinase 9Myocardial Ischemiap38 Mitogen-Activated Protein KinasesProtein Kinase InhibitorsPyridinesRatsCollagen Type IVElastinImidazolesLamininMatrix Metalloproteinase 2Matrix Metalloproteinase 9p38 Mitogen-Activated Protein KinasesProtein Kinase InhibitorsPyridinesSB 203580

Identifiers

PMID21884701
PMCPMC3208797
OpenAlexW1992537891

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.