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  • Title: High titer of anti-citrullinated peptide antibody is a risk factor for severe carotid atherosclerotic plaque in patients with rheumatoid arthritis: the TOMORROW study.
    Author: Okano T, Inui K, Sugioka Y, Sugioka K, Matsumura Y, Takahashi S, Tada M, Mamoto K, Wakitani S, Koike T, Nakamura H.
    Journal: Int J Rheum Dis; 2017 Aug; 20(8):949-959. PubMed ID: 28627096.
    Abstract:
    AIM: Cardiovascular disease is one of the complications of rheumatoid arthritis (RA). We researched the morbidity and severity of existing carotid atherosclerosis plaque and associated risk factors in patients with RA. METHOD: This study included 413 participants, including 208 patients with RA and 205 age- and sex-matched healthy volunteers. Carotid ultrasound, clinical data collection and assessment of cardiovascular risk factors were performed. Atherosclerotic plaque was defined as an intima-media thickness ≥ 1.1 mm. Severity of plaque was assessed by plaque score, defined as the sum of the maximal thickness of all plaques in bilateral carotid arteries. RESULTS: Data were analyzed from 200 patients with RA and 202 controls. Carotid plaque was observed more frequently in patients with RA than controls (47.0 vs. 36.1%, P = 0.027). Moreover, plaque score was significantly higher in RA patients (P = 0.032). In logistic regression analysis, RA represented an independent risk factor for the presence of plaque (adjusted odds ratio, 1.68; 95% confidence interval, 1.03-2.74). Comparing RA patients with and without plaque, anti-cyclic citrullinated peptide (anti-CCP) antibodies titer was significantly higher in patients with plaque (315.8 ± 454.1 U/mL) than in patients without (165.7 ± 281.1 U/mL; P = 0.005). Moreover, multiple linear regression analysis clarified that anti-CCP antibody titer was associated with plaque score in patients with RA. CONCLUSION: High prevalence of any carotid plaques and severe carotid plaques were more frequent in patients with RA. High titer of anti-CCP antibodies represented a risk factor for severe carotid atherosclerotic plaque in patients with RA.
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