Abstract
We studied the effects of cytostatic drugs on porcine coronary artery spindle-shaped (S) and rhomboid (R) smooth muscle cell (SMC) biological activities related to intimal thickening (IT) formation. Imatinib, and to a lesser extent curcumin, decreased proliferation of S- and R-SMCs and migratory and urokinase activities of R-SMCs more efficiently compared with cyclosporine plus rapamycin. Imatinib increased the expression of α-smooth muscle actin in both SMC populations and that of smoothelin in S-SMCs. It decreased S100A4 expression in R-SMCs. By promoting SMC quiescence and differentiation imatinib and curcumin may represent valid candidates for restenosis preventive and therapeutic strategies.
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