Oral administration of alpha-lipoic acid did not affect lipid peroxidation and antioxidant biomarkers in rheumatoid arthritis patients
2019
Abstract. Rheumatoid arthritis (RA) is a chronic inflammatory disease in which oxidative stress could play a substantial pathological role. Alpha-lipoic acid (ALA) has been known as a “universal” and “ideal” antioxidant. The purpose of this study was to investigate the effects of oral administration of Alpha-lipoic acid (ALA) on lipid peroxidation and antioxidant biomarkers in Rheumatoid arthritis (RA) patients. The study was a randomized, double-blinded, placebo-controlled clinical trial. 70 RA patients were randomized 1:1 to two groups using blocked randomization method and received 1200 mg/day ALA or placebo for 8 weeks. Fasting blood samples were obtained before and after the intervention to analyze total antioxidant capacity (TAC), antioxidant enzymes [superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and arylesterase (ARE) activities] and malondialdehyde (MDA). We observed significant increase in serum TAC (0.11 mmol/L; p=0.033) and ARE (13.76 U/mL; p=0.046) and significant decline in MDA ...
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