Lipid Peroxidation and Detection of Pro-Inflammatory Variables in Rheumatoid Arthritis- A Comprehensive Analysis of Malondialdehyde and Isoprostanes in Synovial Fluids and SERA

Background: Rheumatoid arthritis (RA) is a chronic autoimmune disease marked by systemic inflammation and joint destruction produced mostly by oxidative stress and lipid peroxidation. Analyzing markers for these processes is critical to understanding the etiology of RA. Objectives: The goal of this study is to assess the importance of the lipid peroxidation indicators malondialdehyde (MDA) and isoprostanes in RA synovial fluids and sera in indicating oxidative stress, as well as their potential diagnostic use. Methodology: We carried up cross-sectional analytical study with 60 participants, evenly divided between RA patients and healthy controls of the same age and gender. Malondialdehyde levels were measured spectrophotometrically using the thiobarbituric acid reactive substances (TBARS) method, and isoprostanes were quantified using commercially available ELISA kits. The samples were obtained at the Arif Clinical and Diagnostic Centre and examined in the biochemical labs of Rashid Latif Hospital in Lahore. Results: The study found that RA patients had significantly higher levels of MDA and isoprostanes in their serum (MDA: 1.95±0.094 µmol/ml; Isoprostanes: 12.26±5.26 pg/ml) and synovial fluid (MDA: 3.26±0.65 µmol/ml; Isoprostanes: 34.26±4.26 pg/ml) compared to controls (MDA: 0.95±0.019 µmol/ml; Synovial Fluid MDA: 0.019±0.0016). Conclusion: Elevated levels of MDA and isoprostanes in RA patients highlight their significance as oxidative stress indicators, representing the continuous inflammatory process and probable joint damage in RA. These findings lend credence to the diagnostic and prognostic value of lipid peroxidation products in the treatment of RA.