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  • Title: Serum levels of adipocytokines in psoriasis patients receiving tumor necrosis factor-α inhibitors: results of a retrospective analysis.
    Author: Campanati A, Ganzetti G, Giuliodori K, Marra M, Bonfigli A, Testa R, Offidani A.
    Journal: Int J Dermatol; 2015 Jul; 54(7):839-45. PubMed ID: 25877149.
    Abstract:
    BACKGROUND: Adipocytokines are bioactive molecules that are deeply involved in the occurrence of atherosclerosis, obesity, and autoimmune inflammatory diseases. OBJECTIVES: This study was conducted to evaluate the effects of tumor necrosis factor-α (TNF-α) inhibitors on serum levels of adipocytokines in patients with chronic plaque psoriasis. METHODS: Serum levels of adiponectin, resistin, visfatin, leptin, TNF-α, and interleukin-6 (IL-6) were evaluated in sera obtained from 47 patients with psoriasis, both at baseline and after they had received TNF-α inhibitors for 24 weeks. Equivalent data were obtained for 39 control subjects matched by age, sex, body mass index, waist : hip ratio, geographical origin, Mediterranean dietary habits, and smoking habits. RESULTS: At baseline, mean serum levels of TNF-α, IL-6, leptin, resistin, and visfatin were higher in the psoriasis group than in healthy controls; these differences were statistically significant (P < 0.05). Conversely, mean serum levels of adiponectin were significantly lower in patients with psoriasis than in controls (P < 0.0001). Serum levels of adipocytokines did not linearly correlate with anthropometric indices in psoriasis patients (P > 0.05), except in the case of leptin, for which serum levels were related to waist : hip ratio in both men and women (P < 0.05). After 24 weeks of treatment, although serum levels of proinflammatory adipocytokines were decreased, only that of leptin showed a statistically significant reduction (P = 0.0003). Serum levels of adiponectin, an anti-inflammatory adipocytokine, were only mildly increased and persisted at a significantly lower level than in healthy controls (P > 0.005). CONCLUSIONS: Patients with psoriasis show an imbalance between pro- and anti-inflammatory adipocytokines, which is reduced but not normalized after administration of TNF-α inhibitors for 24 weeks. This partial rebalancing seems to be mainly related to a reduction in proinflammatory adipocytokines, rather than an increase in anti-inflammatory adipocytokines.
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