Figure 1  .

Correlation between changes in IL-6 concentrations in the coronary sinus induced by PTCA and late restenosis. (A) A significant positive correlation was found between relative changes in IL-6 concentrations immediately after PTCA and late loss index six months after PTCA (r = 0.73, p < 0.001). Circles, data from POBA (plain old balloon angioplasty) group; triangles, PTRA (percutaneous transluminal rotational coronary atherectomy) group; squares, stent group. (B) Patients were divided into two groups according to late restenosis. Patients with restenosis (n = 11) showed significantly higher IL-6 concentrations after PTCA than those without restenosis (n = 17). Data are means, error bars = SEM. *p < 0.001.