Restenosis is a major complication of percutaneous transluminal coronary angioplasty (PTCA) and is characterized by increased superoxide formation and accumulation of smooth muscle cells (SMCs). The mechanisms through which peroxisome proliferator-activated receptor-gamma (PPAR-gamma) modulates the pathological process are incompletely defined. In this study, balloon injury of porcine coronary arteries in vivo and cell scraping model in vitro were used to elucidate the pathway via this molecule.
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