Sustained elevation of serum CD40 ligand levels one month after coronary angioplasty predicts angiographic restenosis
L'Allier, P.L.; Tardif, J-Claude.; Grégoire, J.; Joyal, M.; Lespérance, J.; Fortier, A.; Guertin, M-Claude.
Canadian Journal of Cardiology 21(6): 495-500
2005
ISSN/ISBN: 0828-282X PMID: 15917878 Document Number: 585307
Background: Percutaneous coronary intervention induces an early inflammatory reaction. The intensity Of such a reaction as measurement by high-sensitivity C-reactive protein has been correlated with recurrent ischemic events, but its association with restenosis remains uncertain.Objectives: To characterize the type and duration Of the postangioplasty inflammatory reaction and to identify new inflammatory markers; correlating with restenosis.Methods: Fifty-three consectitive patients who Underwent successful balloon angioplasty were studied. Levels of specific inflammatory markets were measured before intervention, and at one-month and six-month follow-up. Six-month clinical and angio-graphic graphic was conducted in all patients, and quantitative coronary analysis was systematically performed.Results: Levels of soluble CD40 ligand (sCD40L) and matrix metalloproteinase-2 showed a rise and fall pattern over six months, with peak levels measured at one month (P < 0.0001), while levels of soluble vascular cell adhesion molecule- 1 increased after an angioplasty and remained elevated at six months (P=0.07). Plasma levels of sCD40L at one month correlated with angiographic late loss (r=0.48, P=0.001) and were predictive of six-month restenosis (area tinder receiver operating characteristic curve 0.75 [95% CI 0.61 to 0.88]).Conclusions: The results imply that inflammation persists for at least one month following angioplasty and that future therapeutic interventions targeting inflammation to prevent restenosis should be active during this period. Furthermore, the ability of sCD40L levels to predict restenosis at six months may indicate the relevance of this pathway as a therapeutic target for restenosis prevention.