Keywords balloon injury;collagen;vascular remodeling;matrix metalloproteinases;pentoxifylline;tissue specific inhibitors of matrix metalloproteinases;

• 球囊损伤;胶原;血管重塑;己酮可可碱;基质金属蛋白酶-1;基质金属蛋白酶组织抑制剂-1;