Increased Circulatory Interleukin-17A Levels in Patients with Progressive and Leukotrichial Vitiligo
Overview
Affiliations
Background: Vitiligo is a chronic condition characterized by skin depigmentation. Although not life-threatening, it significantly impacts quality of life. The pathophysiology of vitiligo remains poorly understood, and treatment options are limited. Mounting evidence supports the importance of autoreactive T cells and, particularly interleukin-17A- (IL-17A-) secreting Th17 cells, in vitiligo. IL-17A targeting has been proven successful in various inflammatory dermatological conditions, including psoriasis and lupus erythematosus.
Objective: We evaluated the relationship between serum levels of IL-17A and the clinicopathological characteristics of Vietnamese vitiligo patients.
Methods: In this cross-sectional study, we analyzed data from 52 nonsegmental vitiligo patients and 50 age- and sex-matched healthy individuals. Serum levels of IL-17A were measured using an enzyme-linked immunosorbent assay. We evaluated the correlation between IL-17A levels and clinical characteristics including leukotrichia, disease duration, vitiligo activity, and body surface area involvement.
Results: Patients with progressive vitiligo had significantly higher IL-17A levels than patients with stable vitiligo ( = 0.014) or healthy individuals ( = 0.002). In addition, serum IL-17A levels were higher in vitiligo patients with leukotrichia than in patients without it ( = 0.04). Furthermore, serum IL-17A levels were negatively correlated with age ( = -0.39, = 0.004) and age of onset ( = -0.33, = 0.016) in vitiligo patients.
Conclusions: Higher serum levels of IL-17A in patients with progressive vitiligo and leukotrichia suggest a potential role of IL-17A in melanocyte destruction in the epidermis and the follicular matrix.
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