Effectiveness of triptolide-coated stent on decreasing inflammation and attenuation of intimal hyperplasia in a pig after coronary angioplasty.

Objective: The study is to test the efficacy of triptolide-coated stent on anti-inflammatory and inhibiting intimal hyperplasia in preventing restenosis.

Methods: A total of 15 triptolide-coated stents (TCSs), 12 drug-eluting stents (DESs), and 12 bare metal stents (BMSs) were deployed in porcine coronary arteries. Coronary angiography, histopathologic and inflammatory markers levels were analyzed at 4 week after stenting.

Results: At 4-week follow-up, quantitative coronary angiography (QCA) showed that minimum lumen diameter was greater, and percentage stenosis and late lumen loss in TCS group and DES group were less than that of BMS group. Compared to BMS group, injury and inflammation score in TCS group and DES group were decreased, neointimal area significantly reduced and lumen area enlarged in TCS, DES group as well.

Conclusion: Triptolide-coated stent showed the effect of preventing restenosis via inhibition of neointimal hyperplasia and anti-inflammation acts after coronary angioplasty.