Evidence map›Paper›PMID 19679827›Full record

ArticleArteriosclerosis, thrombosis, and vascular biology2009

Statins block calcific nodule formation of valvular interstitial cells by inhibiting alpha-smooth muscle actin expression.

Julie A Benton, Hanna B Kern, Leslie A Leinwand, Peter D Mariner, Kristi S Anseth

Erratum issuedOpen access · bronzeAbstract read
In one paragraph

Article in Arteriosclerosis, thrombosis, and vascular biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
3.9field-weighted citation impact, top 6% 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

43 citing papers in PubMed, 76 citations in OpenAlex.

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  7. Tumor necrosis factor-α promotes and exacerbates calcification in heart valve myofibroblast populations.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2021
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  8. Review
  9. Organ Culture Model of Aortic Valve Calcification.Frontiers in cardiovascular medicine · 2021
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4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Julie A BentonDepartment of Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309, USA.
Hanna B Kern
Leslie A Leinwand
Peter D Mariner
Kristi S Anseth
Howard Hughes Medical Institute · US

Funding

MYOSIN GENE DIVERSITY AND FUNCTIONR01GM029090 · NIGMS · YESHIVA UNIVERSITY · PI Leslie Anne Leinwand · 1985 to 2026
$12.3M
Bioactive Hydrogel Niches for 3D VIC CultureR01HL089260 · NHLBI · UNIVERSITY OF COLORADO · PI ANSETH, KRISTI S. · 2008 to 2011
$1.3M
Howard Hughes Medical InstituteNHLBI NIH HHS HL089260NHLBI NIH HHS R01 HL089260NIGMS NIH HHS GM029090
6 · The paper itself

Abstract

objectiveCalcific aortic stenosis, characterized by excessive fibrosis and deposition of bone-like calcified tissue, affects roughly 2% to 3% of the U.S. population over the age of 65. Recent studies have suggested that statins have a positive effect on the progression of aoritic stenosis, likely because of their ability to affect the resident cell population, known as valvular interstitial cells (VICs). VICs are fibroblastic cells that can differentiate to form activated myofibroblasts, displaying increased alpha smooth muscle actin (alphaSMA) expression, contractility, and collagen production. METHODS AND

resultsIn culture, VICs spontaneously form multicellular aggregates that subsequently develop into calcified nodules, providing an in vitro model for aortic stenosis. Using real-time microscopic tracking, we observed that confluent VIC monolayers spontaneously contract into rounded nodules, suggesting that myofibroblastic contractility is a critical step in the process of nodule formation. Overexpression of alphaSMA increased VIC calcific nodule formation and contractility, whereas knockdown of alphaSMA with siRNAs reduced these phenotypes, suggesting that the expression and contractile properties of alphaSMA are essential to the formation of nodules. Statin treatment of VICs reduced alphaSMA expression, inhibited contractility, and decreased nodule formation. When statins were used to treat preformed nodules, no decrease in the number of calcified nodules was observed, suggesting that statins may play more of a preventative role in aortic stenosis than a cure.

conclusionsOur studies provide evidence of a causal relationship between VIC myofibroblastic activity and initial VIC calcific nodule formation. Furthermore, we demonstrate that pravastatin inhibition of calcific nodule formation is related to inhibition of myofibroblastic activity.

Indexed as

ActinsAnimalsAortic ValveCalcinosisCell ProliferationCells, CulturedFibroblastsGene Expression RegulationHydroxymethylglutaryl-CoA Reductase InhibitorsMuscle ContractionMuscle, SmoothPravastatinProbabilityReverse Transcriptase Polymerase Chain ReactionRNA, Small InterferingSwineActinsHydroxymethylglutaryl-CoA Reductase InhibitorsPravastatinRNA, Small Interfering

Identifiers

PMID19679827
PMCPMC2766347
OpenAlexW2153339824

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.