1. Restenosis in bare metal and drug-eluting stents: distinct mechanistic insights from histopathology and optical intravascular imaging

    Restenosis in bare metal and drug-eluting stents: distinct mechanistic insights from histopathology and optical intravascular imaging
    An increasing body of evidence points to the existence of important differences in the processes of restenosis following drug-eluting stent (DES) as compared to bare metal stent implantation. Preclinical investigation and human autopsy studies have shown that the high efficacy of DES in comparison with bare metal stents in preventing restenosis is achieved at the collateral cost of a delay in healing of the stented arterial segment. Moreover bare metal stent restenosis is typically characterised by a homogeneous tissue rich in smooth muscle cells; whereas DES restenosis is more often hypocellular and proteoglycan-rich. In addition, in-stent neoatherosclerosis appears to have ...
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