Research Article

Statin Treatment Is Associated with Reduction in Serum Levels of Receptor Activator of NF-κB Ligand and Neutrophil Activation in Patients with Severe Carotid Stenosis

Table 5

Parameters of intraplaque vulnerability.

CharacteristicsStatin ( )No statin ( ) -value

Upstream portion
 % of lipid 4.63 (1.84–8.63)4.36 (3.17–5.54)0.6524
 % of total collagen 41.24 (18.91–52.70)30.43 (21.25–43.09)0.6786
 % of collagen I8.97 (4.27–15.98)6.42 (4.71–10.04)0.4385
 % of collagen III21.79 (15.32–37.75)20.33 (16.67–31.94)0.9569
 % of smooth muscle cell-rich area8.85 (3.75–19.57)8.00 (3.22–14.48)0.6013
 % of macrophage-rich area2.96 (0.88–9.06)2.08 (0.27–6.69)0.4823
 Neutrophils/mm20.75 (0.52–1.32)0.81 (0.30–12.47)0.6786
 % of MMP*-90.71 (0.33–1.36)0.39 (0.21–7.19)0.6524
 RANK mRNA, fold increase0.49 (0.33–1.15)0.81 (0.31–1.74)0.5725
 RANKL mRNA, fold increase0.78 (0.30–1.24)0.61 (0.32–0.98)0.8859
 OP mRNA, fold increase0.84 (0.57–1.47)0.83 (0.50–1.17)0.7944
 % of OPG2.71 (1.77–6.06)0.50 (0.10–2.34)0.0150

Downstream portion
 % of lipid 4.39 (2.83–8.69)4.94 (2.13–6.63)0.4884
 % of total collagen 18.45 (2.07–45.87)5.06 (0.50–10.28)0.0289
 % of collagen I5.56 (0.67–20.74)0.67 (0.11–3.37)0.0345
 % of collagen III10.61 (2.15–25.11)1.98 (0.70–8.57)0.0728
 % of smooth muscle cell-rich area3.87 (1.50–5.15)3.59 (2.42–4.30)0.8173
 % of macrophage-rich area1.97 (1.02–8.29)9.00 (2.24–11.70)0.1060
 Neutrophils/mm20.26 (0.15–0.93)3.77 (1.20–8.16)0.0001
 % of MMP-94.05 (0.68–12.30)10.12 (3.86–13.81)0.0574
 RANK mRNA, fold increase0.99 (0.48–2.77)0.62 (0.38–2.43)0.4601
 RANKL mRNA, fold increase0.84 (0.45–1.25)0.59 (0.17–1.60)0.5165
 OPG mRNA, fold increase1.38 (1.06–1.71)1.06 (0.80–1.60)0.2117
 % of OPG0.27 (0.01–0.96)0.28 (0.02–0.67)0.7746

Data are expressed as median (interquartile range (IQR)).
*MMP: matrix metalloproteinase.
RANK: receptor activator of nuclear factor-κB.
RANKL: receptor activator of nuclear factor-κB ligand.
OPG: osteoprotegerin.