Abstract
Atherosclerosis and arterial stiffness are phenotypes of atherosclerotic vascular damage. Atherosclerosis originates from endothelial vascular damage and forms focal morphological lesions; arterial stiffness originates from diffuse medial-layer damage in the arterial tree. Thus, the two phenomena reflect different facets of atherosclerotic vascular damage, and they both gradually progress. We conducted a subanalysis to compare the long-term effects of febuxostat on atherosclerosis and arterial stiffness in the PRIZE study (a multicenter, prospective, randomized, open-label, blinded-endpoint clinical trial to examine the effect of febuxostat on carotid atherosclerosis). Among 514 study participants, arterial stiffness parameters (brachial-ankle pulse wave velocity or cardio-ankle vascular index) were obtained at baseline, 12 months, and 24 months in 100 subjects. Among them, 48 subjects were allocated to the control group (i.e., nonpharmacological lifestyle modification for hyperuricemia), and 52 subjects were allocated to the febuxostat treatment group. While the decrease in serum uric acid was greater in the febuxostat group than in the control group, the adjusted percentage decrease in arterial stiffness parameters at month 24 was greater in the febuxostat group than in the control group, with a mean between-group difference (febuxostat - control) of -5.099% (95% confidence interval (CI) -10.009% to -0.188%, p = 0.042). Thus, long-term treatment with febuxostat may exert beneficial effects on arterial stiffness without improving carotid atherosclerosis. A long-term study to examine the effect of febuxostat on cardiovascular outcomes related to increased arterial stiffness is warranted.
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