Livedo vasculopathy vs small vessel cutaneous vasculitis: cytokine and platelet P-selectin studies

Archives of Dermatology
M PapiR Cavalieri

Abstract

To assess the role of platelets and lymphocyte-related immunological mechanisms in livedo vasculopathy (LV) and cutaneous small vessel vasculitis (CSVV). Livedo vasculopathy is thought to be related to the thrombotic occlusion of small and medium-sized dermal vessels. Cutaneous small vessel vasculitis comprises a heterogeneous group of disorders in which the main pathogenetic events could be modulated by circulating cytokines. Case series study of 2 groups of patients affected respectively with LV and CSVV. A large clinical and research institute for the study and treatment of cutaneous diseases. Consecutive patients with clinically and histologically proved idiopathic LV (n = 8) and CSVV (n = 20) were studied and compared with healthy donors (n = 20). Patients with potentially correlated systemic diseases were excluded. Surface expression of platelet P-selectin and circulating level of interleukin (IL) 1beta, tumor necrosis factor alpha (TNF-alpha), IL-8, IL-2, and soluble IL-2 receptor. The IL-2 and soluble IL-2 receptor levels were significantly higher in serum samples from patients with both LV (1.24 +/- 0.46 IU/mL [mean +/- SD] vs 0.46 +/- 0.24 IU/mL, P<.001; 899 +/- 368 IU/mL vs 628 +/- 132 IU/mL, P<.02) and CSVV (0.91 +/...Continue Reading

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