Abstract
BackgroundEnvironmental factors that are involved in the development of autoimmune diseases include bacteria, viruses, and xenobiotics such as chemicals, drugs, and metals. Regarding the metals, a number of studies have demonstrated that oxidative stress is one of the well-directed pathways of arsenic-induced tissue damages. This study was designed to explore the serum concentrations of arsenic and its correlation with markers associated with oxidative stress in relapsing-remitting MS (RRMS) patients. MethodsThis case-controlled study comprised 50 patients with RRMS and 50 healthy subjects. Serum arsenic levels, total antioxidant potential, malondialdehyde (MDA), and lactate levels were measured. ResultsThe arsenic value, MDA, and lactate levels were elevated meaningfully while FRAP level significantly was decreased in RRMS patients with respect to healthy subjects (P <0.05). Furthermore, arsenic serum levels were positively correlated with serum concentrations of MDA and lactate. In contrast, serum levels were negatively correlated to FRAP values in RRMS patients. ConclusionTaken together, the association between arsenic level and oxidative stress parameters supports the hypothesis that high serum arsenic levels may play a critical role in the pathogenesis of MS progression.
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