Oxidative stress is one of the main causes of lung damage caused by methotrexate (MTX). In addition, it has been observed that it causes serious side effects on other organs. In recent years, MTX has started to be used in therapy in combination with Acitretin (ACT). Alpha lipoic acid (ALA), which has antioxidant and anti-inflammatory activities, is naturally found in human foods. In this study, it was aimed to investigate the effect of ALA on phenol oxidase activity in lung tissue in the elimination of cellular level damage by free radicals produced by ACT and MTX. In the study, 50 Wistar albino male adult rats, selected from the same generation and weighing between 200 and 250 g, were used. The rats used were fed with standard mouse food and water was given free. Study groups were formed as control group (K), ALA group, ACT + MTX group and ACT + MTX + ALA group. ACT (20mg / kg / day), MTX (20mg / kg / week), ALA (50mg / kg / day) were dissolved in 0.9% NaCl and given to rats intraperitoneally. Polyphenol oxidase (PO) activation, which catalyzes the oxidation of phenolic compounds, was determined by the Hung and Boucias (1996) method. Compared to the control group, PO activity was found to be 66% higher in the MTX + ACT group and 46% higher in the MTX + ACT + ALA group. On day 5, the PO activity of the MTX + ACT + ALA group was 55% lower than in the MTX + ACT group, and this decrease was found statistically significant (p <0.05). It is determined that this decrease has reduced to 20% on the 7th day. When the results are evaluated, it can be said that MTX + ACT causes phenolic compounds in the lung cell and ALA has a protective effect against phenolic compounds originating from MTX + ACT.
Alpha Lipoic Acid, Acitretin, Methotrexate, Phenol Oxidase