MMP-9 microsatellite polymorphism: Association with the progression of intima-media thickening and constrictive remodeling of carotid atherosclerotic plaques

Nicola Fiotti, Nicola Altamura, Maurizio Fisicaro, Nicola Carraro, Roberto Adovasio, Vittoria Maria Sarra, Laura Uxa, Gianfranco Guarnieri, Bernard Timothy Baxter, Carlo Giansante

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Intima-media thickening (IMT) of carotid arteries and constrictive remodeling (CR) of atherosclerotic plaques are vascular pathologic characteristics that precede the onset of vascular events. SMC migration and proliferation are linked both to IMT and CR and are matrix metalloproteinase 9 (MMP-9) dependent. A genetic polymorphism (PM) of MMP-9, a CA (13-27) microsatellite in the promoter region, which accounts for differential expression of MMP-9, could be linked to progression of IMT and CR. Progression of IMT and CR of plaques in carotid arteries were studied in 55 consecutive patients with a 12-18 months follow-up. All patients were genotyped for MMP-9 PM. A positive linear relationship between the number of repeats and the progression of IMT (P = 0.028) as well as of CR (P = 0.018) was found. The analogous relationship was obtained when only the allele with longer microsatellite was considered. Carriers of more than 20 repeats in one allele showed faster both IMT growth (P = 0.045) and stenosis progressions of plaques (P = 0.019). In multivariate analysis, age, dyslipidemia, and MMP-9 PM were determinants of IMT progression, while MMP-9 PM was the only one of CR. In conclusion, the high number of CA repeats in MMP-9 promoter is positively correlated with faster IMT and CR progression.

Original languageEnglish (US)
Pages (from-to)287-292
Number of pages6
JournalAtherosclerosis
Volume182
Issue number2
DOIs
StatePublished - Oct 2005

Keywords

  • Atherosclerosis
  • Carotid arteries
  • Intimal-medial thickening
  • Metalloproteinases
  • Plaque
  • Polymorphism
  • Stroke

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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