Comprehensive assessment of the dynamics of angiogenesis in patients with psoriasis treated with methotrexate.

Background: evaluation of the severity of pathological angiogenesis in patients with psoriasis can be considered as a promising direction for monitoring the activity of disease and effectiveness of systemic therapy. Aims: evaluation of interconnections between indicators of angiogenesis in the skin and nail bed of psoriasis patients with clinical characteristics of disease course and therapeutic response to the use of methotrexate by a comprehensive study of the morphometric data dynamics of videodermatoscopy in vascular bed of the skin, the severity of blood flow in the dermis and nail bed during ultrasonic power dopplerography and plasma concentrations of vascular endothelial growth factor (VEGF) and endothelin-1 (En-1). Materials and methods: work is based on the data analysis from a survey of 82 patients with moderate to severe psoriasis vulgaris in acute stage, who were first prescribed methotrexate in the form of subcutaneous injections at a dose of 10-15 mg per week in combination with folic acid 5 mg per week. Before treatment and three months after start of methotrexate therapy, all patients underwent videodermatoscopy with dimension of density and size of dilated skin capillaries, ultrasonography of psoriatic plaques and nail bed of affected nails and measurement of doppler blood flow parameters and concentration of VEGF and En-1 in blood plasma. Results: a direct correlation was established between the average diameter of dilated skin capillaries (vascular glomeruli), the degree of increased blood flow in the doppler energy study of ​​psoriatic plaques skin area and the plasma concentration of VEGF and En-1 and values ​​of PASI, BSA, sPGA and DLQI indices, as well as the severity of doppler blood flow of the nail bed and NAPSI index.Under the influence of methotrexate treatment, a decrease in diameter and density of vascular glomeruli, the degree of blood flow in area of psoriatic plaques and the concentration of VEGF and En-1 was observed. Conclusions: studied indicators of angiogenesis can be used as additional criteria for assessing degree of activity and achieving clinical improvement/remission during systemic therapy in patients with moderate and severe psoriasis.