It has been well-established that malondialdehyde (MDA), which is generated during the process of lipid peroxidation, is a commonly known biomarker for oxidative stress. Therefore, the serum levels of MDA are detected by using the lipid peroxidation assay with commercially available kit to determine the induction of oxidative stress in rat models.
As lipid peroxidation is the degradation of lipids that occurs as a result of oxidative damage and contributes to the pathology of many diseases, some end-products of the chain reaction of lipid peroxidation such as malondialdehyde (MDA), 4-Hydroxynonenal (4-HNE) and 8-iso-Prostaglandin F2alpha (8-isoprostane) in serum samples have been detected and quantified for the identification of oxidative damage (Marrocco et al., 2017). In the current lipid peroxidation assay protocol, the serum levels of MDA could be specifically and reliably quantified based on the condensation reaction between MDA and thiobarbituric acid (TBA) by modifying a commercially available kit (MAK085D; Sigma, St Louis, MO) without n-butanol precipitation step (Tang et al., 2019).
Tang, Q., Su, Y. and Xian, C. J. (2019). Determining Oxidative Damage by Lipid Peroxidation Assay in Rat Serum. Bio-protocol 9(12): e3263. DOI: 10.21769/BioProtoc.3263.