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  • Title: Uric acid is independent cardiovascular risk factor, as manifested by increased carotid intima-media thickness in rheumatoid arthritis patients.
    Author: Hannawi S, AlSalmi I, Moller I, Naredo E.
    Journal: Clin Rheumatol; 2017 Aug; 36(8):1897-1902. PubMed ID: 28664292.
    Abstract:
    Rheumatoid arthritis (RA) is associated with increased cardiovascular disease (CVD) mortality and morbidity, due to the combined effects of traditional and non-traditional cardiovascular risk factors (CV). A serum uric acid (SUA) level has been suggested as one of the non-traditional cardiovascular risk factors. Cardiovascular risk can be assessed by looking at the subclinical atherosclerosis such as ultrasound (US)-measured carotid intima-media thickness (cIMT). This paper aimed to determine the role of SUA as a cardiovascular risk factor, along with the traditional cardiovascular risk factors and inflammation, among RA population. RA patients with no clinically evident CV or renal disease were studied. cIMT US, SUA, traditional cardiovascular, and inflammatory markers were obtained and correlated with cIMT. Among 53 RA patients (5 males, 48 females, mean age 48 ± 14 years), univariate linear-regression showed a positive linear relationship between cIMT and age (p < 0.001), age at RA symptoms onset and diagnosis (p = 0.010 and 0.003, respectively), number of cigarettes/day (p < 0.001), systolic and diastolic blood pressure (p = 0.005 and 0.030, respectively), and SUA (p = 0.007). Rheumatoid factor positivity and level were associated with thicker cIMT (p = 0.042 and 0.039, respectively). SUA maintained a significant correlation with cIMT in the multivariate analysis together with age, low-density lipoprotein, and triglyceride level. The model explained 55% (R2 55) of the causes of thick cIMT among RA population. SUA seems to be a cardiovascular risk factor in RA, as manifested by increase in the cIMT.
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