Summary
We performed a systematic review with meta-analysis and meta-regression of literature
studies evaluating the impact of rheumatoid arthritis (RA) on common carotid artery
intima-media thickness (CCAIMT) and on the prevalence of carotid plaques. Studies
evaluating the relationship between RA and markers of cardiovascular (CV) risk (CCA-IMT
and prevalence of carotid plaques) were systematically searched in the PubMed, Web
of Science, Scopus and EMBASE databases. A total of 59 studies (4,317 RA patients
and 3,606 controls) were included in the final analysis, 51 studies with data on CCA-IMT
(52 data-sets on 3,600 RA patients and 3,020 controls) and 35 studies reporting on
the prevalence of carotid plaques (2,859 RA patients and 2,303 controls). As compared
to controls, RA patients showed a higher CCA-IMT (mean difference [MD]: 0.10 mm; 95
% confidence interval [CI]: 0.07, 0.12; p < 0.00001), and an increased prevalence
of carotid plaques (odds ratio [OR]: 3.61; 95 %CI: 2.65, 4.93; p< 0.00001). Interestingly,
when analysing studies on early RA, the difference in CCAIMT among RA patients and
controls was even higher (MD: 0.21 mm; 95 %CI: 0.06, 0.35; p=0.006), and difference
in the prevalence of carotid plaques was entirely confirmed (OR: 3.57; 95 %CI: 1.69,
7.51; p=0.0008). Meta-regression models showed that male gender and a more severe
inflammatory status [as expressed by disease activity score in 28 joints (DAS28),
C-reactive protein (CRP) levels, and erythrocyte sedimentation rate (ESR)] significantly
impacted on CCA-IMT. In conclusion, RA appears significantly associated with subclinical
atherosclerosis and CV risk. These findings can be useful to plan adequate prevention
strategies and therapeutic approaches.
Keywords
Rheumatoid arthritis - cardiovascular risk - intima-media thickness - carotid plaques