Prevalence of metabolic syndrome in psoriasis and levels of Interleukin-6 and tumor necrosis factor-α in psoriasis patients with metabolic syndrome: Indian Tertiary Care Hospital study

Surjit Singh, Sunil Dogra, Nusrat Shafiq, Anil Bhansali, Samir Malhotra

International Journal of Applied and Basic Medical Research 2017 7(3):169-175

Background: Psoriasis is a chronic inflammatory multisystem disease, found to be associated with metabolic syndrome (MS) and increased levels of cytokines. To evaluate the prevalence of MS in psoriasis and to determine the levels of interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) in psoriasis patients with MS. Methods: Observational study on 334 psoriasis patients and 230 controls. MS was diagnosed by the presence of three or more criteria of original, revised, and modified National Cholesterol Education Program's Adult Treatment Panel III (NCEP ATP III). Results: MS was significantly more common in psoriasis patients than in controls (multivariate odds ratio [95% confidence interval] of original NCEP ATP III = 5.73 [2.99–10.99], revised NCEP ATP III = 4.44 [2.43–8.10], and modified NCEP ATP III = 6.00 [3.43–10.52]). Higher prevalence of abdominal obesity (66.2% vs. 47%, P < 0.001), hypertriglyceridemia (40.4% vs. 29.6%, P = 0.009), systolic blood pressure (BP) ≥130 mmHg (25.1% vs. 7.4%, P < 0.001), diastolic BP ≥85 mmHg (30.2% vs. 12.2%, P < 0.001), and fasting plasma glucose ≥100 mg/dl (17.4% vs. 9.1%, P = 0.005) among psoriasis patients as compared to controls. Mean (standard deviation) values of IL-6 and TNF-α were 76.7 (73.9) pg/ml and 234.3 (273.9) in subgroup of psoriasis patients with MS (n = 42), significantly higher than the normal population (P < 0.0001). Conclusion: MS is more common in psoriasis. IL-6 and TNF-α is significantly higher in psoriasis patients with MS, signifying their role in pathogenesis of psoriasis and MS.

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