The findings of the present study indicate that nebivolol, through its antioxidant properties, increases NO also by decreasing its oxidative inactivation.

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Our results suggest that in mildly hypertensive patients without organ damage zofenopril, beyond its BP-lowering effects and through its sustained antioxidant activity, offers important advantages in reducing endothelial activation.

Objectives-The purpose of this study was to establish whether oxidized low-density lipoprotein (oxLDL) contributes to cytokine overproduction via upregulation of CD14 and toll-like receptor-4 (TLR-4) expression on circulating monocytes of unstable angina (UA) patients. Methods and Results-Expression of CD14 and TLR-4 on circulating monocytes, and the concentration of plasma oxLDL, (interleukin [IL])-6, IL-1 beta, IL-8, tumor necrosis factor (TNF)-alpha, monocyte chemoattractant protein-1 (MCP-1) were measured in 27 control (C) subjects, 29 patients with stable angina (SA), and 27 with UA. CD14 and TLR-4 expression on monocytes and circulating IL-6, IL-1 beta, and oxLDL were higher in UA than in SA and C subjects (PϽ0.001). In in vitro experiments, oxLDL increased CD14 and TLR-4 expression (PϽ0.001) in control monocytes as well as IL-6, IL-1 beta, and at a lower extent TNF-␣ and MCP-1 levels in the supernatant (P from Ͻ0.05 to Ͻ0.001).The preincubation of sera derived from UA patients but with control monocytes also induced a significant increase of CD14 and TLR-4 expression (PϽ0.001) and of IL-6 and IL-1 beta production (PϽ0.001) in the supernatant. Conclusions-In UA patients oxLDL may contribute to monocyte overproduction of some cytokines by upregulating

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