Abstract
ABSTRACTMediators have important roles in the pathogenesis of autoimmune diseases. Interleukin 4 (IL-4) is one of the most important cytokines that has a regulatory effect on immune cells. In the current study, the serum level of IL-4 was assessed in the newly diagnosed neuromyelitis optica (NMO) and multiple sclerosis (MS) patients compared to healthy subjects. ELISA technique was used for assessment of the serum level of IL-4, and data analysis was performed by SPSS software. Serum level of IL-4 was elevated in both NMO and MS patients compared with healthy individuals (P < .001), but no statistically significant difference was identified between MS and NMO patients (P = .071). Furthermore, gender (female) and AQP4-Ab had significant impacts on the level of IL-4 in NMO patients (P < .001). These data show the crucial role of IL-4 in the pathogenesis of NMO and MS diseases. However, we suggest future studies to investigate the serum level of IL-4 in NMO and MS patients to clarify more roles of this cytokine in the pathogenesis of both diseases.
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