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[Takayasu's arteritis and atherosclerosis].

A. Hatri,R. Guermaz,J. Laroche,S. Zekri,M. Brouri

Published 2019 in Journal de medecine vasculaire

ABSTRACT

INTRODUCTION Chronic inflammatory diseases such as systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA), are accompanied by high cardiovascular morbidity and mortality secondary to accelerated and premature atherosclerosis. Atherosclerosis is correlated with chronic systemic inflammation independently of the factors for cardiovascular risk. Vasculitis of large arteries such as Takayasu's disease, are characterized both by chronic systemic inflammation and local parietal vascular inflammation. METHODS We prospectively analyzed in a case-control study, a group of 64 carriers of Takayasu's arteritis patients with a mean age of 41 years [±11.94], a group of 50 RA female patients aged 45 years [±10.27], and a control group with an average age of 44 years [±12.63]. We recorded classic cardiovascular risk factors and used the Framingham equation to calculate the risk. We measured the intima-media thickness (IMT) in the carotids and noted the presence of carotid, aortic and femoral atheroma. RESULTS The mean calculated cardiovascular risk was 3.5 % in the Takayasu's group. It was 4.4 % in the RA group, and 4.5 % in controls with no significant difference between the three groups (P=0.153). Subclinical atherosclerosis defined by IMT> 0.70mm and/or the presence of atheroma plaque was found in 87 % of Takayasu's patients versus 76 % of RA patients, (P=0.088) and 48 % of controls (P<0.001). Most atherosclerotic plaques were found in the Takayasu group. Compared to the control group the carotid intima-media thickness was significantly higher in the Takayasu group. The average IMT in the Takayasu group was 0.91mm [±0.368], 0.76mm [±0.151] for the PR group, and 0.71mm [±0.141] for controls. DISCUSSION Atherosclerosis observed in Takayasu's disease was accelerated and premature, occurring in young patients with a low overall cardiovascular risk. Recent data support the central role of inflammation in all stages of atherogenesis from endothelial dysfunction to plaque rupture. Systemic inflammation associated with local parietal inflammation observed in Takayasu's arteritis, appears to be responsible for accelerated and premature atherosclerosis. The results of our study and the literature review favor an active strategy for cardiovascular prevention in Takayasu's disease.

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