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 (CCA-IMT) 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 CCA-IMT 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.

Meta-regression showed that a more severe inflammatory status impacted on aortic-PWV, AIx, and AIx@75. Arterial stiffness, a recognized marker of CV risk, is increased in RA patients. This alteration is associated with the severity of the inflammatory status and is present even in early-stage disease.

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These findings could help to establish more specific CV prevention strategies in this clinical setting.

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The majority of psoriatic arthritis (PsA) patients experience a good clinical response to conventional synthetic disease-modifying antirheumatic drugs (csDMARDs) and biologic therapies (bDMARDs). However, treatment failure with these drugs can represent a relevant clinical problem. Moreover, in daily clinical practice, the appropriate identification of patients eligible for these agents can be conditioned by numerous aspects, mainly represented by comorbidities, such as history of malignancies, chronic and recurrent infectious diseases. Areas covered: We searched in the PUBMED database and review published data on the efficacy and safety profile of the small molecules, inhibitor of phosphodiesterase 4, apremilast, and of JAK/STAT pathways, tofacitinib, in PsA. Moreover, we report data on the other JAK inhibitor, baricitinib, and the A(3) adenosine receptors agonist, CF101, emerging by studies conducted in psoriasis patients. Expert opinion: In Psoriatic Arthritis, apremilast appears promising for PsA and recent studies have shown a good efficacy and an acceptable safety profile. Data on tofacitinib in PsA are limited. Studies on the small molecules, baricitinib and CF101 are still incomplete and limited to trials conducted in Rheumatoid Arthritis and in psoriasis. Further studies on small molecules and on their underlining mechanisms are advocated in PsA.

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