Skin advanced glycation end products as a diagnostic and monitoring tool among psoriatic patients: how the therapy helps reduce cardiovascular disease risk

Background and aims Psoriasis is a disturbing and burdensome inflammatory skin disorder, with a global prevalence of 2-3%. An increased risk of cardiometabolic disease between psoriatic patients has been recently demonstrated. This is probably due to the psoriasis systemic inflammation and the increased levels of inflammatory cytokines, such as IL-17, IL-23, and TNF-alpha. Advanced glycation end products (AGEs) are the products of nonenzymatic glycation and oxidation of proteins and lipids which modify their structure and function. They have a significant role in the pathogenesis of diabetic nephropathy, atherosclerosis, and cardiovascular diseases of diabetic adults and children. The accumulation of AGEs can be measured by skin autofluorescence (SAF). Adalimumab (Humira (R)) is a fully human monoclonal antibody, administered via subcutaneous injection, which binds the tumor necrosis factor (TNF) and is used to treat moderate-to-severe chronic plaque psoriasis. We performed an observational prospective study of 24 weeks to assess the reduction of AGEs through SAF measurement during treatment with adalimumab. Methods SAF measurements in patients were performed at T0 and after 24 weeks of therapy. Adalimumab efficacy was assessed using Psoriasis Area and Severity Index (PASI), Visual Analogue Scale (VAS) for pain, and erythrocyte sedimentation rate (ESR). Results ESR, AGEs, PASI, and VAS for pain decreased throughout the study period. Conclusion Adalimumab reduced AGEs in psoriatic patients. Biologic therapies may also prevent cardiovascular disease, suggesting a new approach of combined therapy for psoriasis and cardiovascular diseases.