Serum levels of functional T-regs in vitiligo: our experience and mini-review of the literature
2013
Vitiligo is an acquired depigmentary skin disorder due to the loss of cutaneous melanocytes or alteration in melanocyte function, affecting over 0.5% of the world population. The exact cause of melanocyte loss in non-segmental vitiligo is still debatable, but many observations have pointed to the main role of cellular immunity. Earlier evidence has shown that depigmenting vitiligo skin is accompanied by CD8+ T cytotoxic lymphocytes infiltrates at the dermal-epidermal junction. Dysregulation of Tregs may be one of the factors that can break tolerance to melanocyte self-antigens and contribute to the pathogenesis of vitiligo. The objectives of the present study were to provide evidence of the presence of a functional defect and decrease of peripheral regulatory T cells in patients affected by vitiligo, supporting the hypothesis of their involvement in the pathogenesis of the disease, opening new possibilities to advance therapeutic approaches.
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