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  • Title: Hypertension is associated with serologically active disease in patients with systemic lupus erythematosus: role of increased Th1/Th2 ratio and oxidative stress.
    Author: Lozovoy MA, Simão AN, Morimoto HK, Iryioda TM, Panis C, Reiche EM, Borelli SD, Oliveira SR, Cecchini R, Dichi I.
    Journal: Scand J Rheumatol; 2014; 43(1):59-62. PubMed ID: 24134304.
    Abstract:
    OBJECTIVES: To determine whether disease activity verified by laboratorial parameters is associated with a higher frequency of hypertension in patients with systemic lupus erythematosus (SLE) without renal impairment and to investigate factors that could influence this hypertension. METHOD: This study included 102 controls, 70 patients with inactive SLE, and 53 patients with active SLE without renal impairment. We evaluated T helper type 1 (Th1)/Th2 lineage cytokines, nitric oxide (NO), insulin resistance (IR), and oxidative stress. RESULTS: Patients with active SLE had a higher probability of developing hypertension compared to controls [odds ratio (OR) 3.833, 95% confidence interval (CI) 1.806-8.137, p < 0.0003] and patients with inactive SLE (OR 2.215, 95% CI 1.032-4.752, p = 0.0394). Active SLE patients had a higher interleukin (IL)-12/IL-4 ratio (p < 0.05) than both controls and inactive SLE patients. Protein oxidation was significantly higher in patients with active SLE than in the control group and in patients with inactive SLE (p < 0.01 and p < 0.05, respectively). Multivariate analysis revealed an association between the presence of hypertension and he levels of glucose (p = 0.0276), insulin (p = 0.0498), hydroperoxides (p = 0.0221), IFN-γ (p = 0.0494), IL-17 (p = 0.0272), IL-12/IL-10 (p = 0.0373), IFN-γ/IL-10 (p = 0.0142), IFN-γ/IL-4 (p = 0.0320), and adiponectin (p = 0.0433). CONCLUSIONS: Patients with active SLE without renal impairment had an increased frequency of high blood pressure (43.4%) compared with patients with inactive SLE (25.7%) and controls (16.7%). Hypertension was associated with serologically active disease and was influenced by an increased Th1/Th2 ratio and oxidative stress.
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