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Effect of lutein on methotrexate-induced oxidative lung damage in rats: A biochemical and histopathological assessmentMammadov, RenadSuleyman, BahadirAkturan, SelcukCimen, Ferda KeskinKurt, NezahatSuleyman, ZeynepMalkoc, İsmailLungLuteinMethotrexateRatsAnimalsAntioxidantsDisease Models, AnimalGlutathioneInterleukin-1betaLung DiseasesMaleMalondialdehydeOxidative StressPeroxidaseRats, WistarTumor Necrosis Factor-alphainterleukin 1betamalonaldehydemyeloperoxidasesodium chloridetumor necrosis factorxanthophyllantioxidantIL1B protein, ratanimal experimentanimal tissueArticlebiochemistrycontrolled studydrug effectBackground/Aims: This study aimed to investigate the effect of lutein on methotrexate (MTX)-induced pulmonary toxicity in rats biochemically and histopathologically. Methods: The rats in the MTX + lutein (MTXL, n = 6) group were given 1 mg/kg of lutein orally. A 0.9% NaCl solution was administered orally to the MTX (n = 6) group and the healthy group (HG, n = 6). One hour later, a single 20 mg/kg dose of MTX was injected intraperitoneally in the MTXL and MTX. Lutein or 0.9% NaCl solution was administered once a day for 5 days. At the end of this period, malondialdehyde (MDA), myeloperoxidase (MPO), total glutathione (tGSH), interleukin 1 beta (IL-1β), and tumor necrosis factor alpha (TNF-α) were measured in the lung tissues from the animals euthanized with 50 mg/kg thiopental sodium anesthesia. Subsequently, histopathological examinations were performed. Results: The levels of MDA, MPO, IL-1β, and TNF-α in the lung tissue of the MTX were significantly higher than those of the MTXL and HG groups (p < 0.0001), and the amount of tGSH was lower. The histopathological findings in the MTX group, in which the oxidants and cytokines were higher, were more severe. Conclusions: Lutein prevented the MTX-induced oxidative lung damage biochemically and histopathologically. This result indicates that lutein may be useful in the treatment of MTX-induced lung damage. © 2019 The Korean Association of Internal Medicine.Korean Association of Internal Medicine2019Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/13704https://doi.org/10.3904/kjim.2018.1451226-3303enKorean Journal of Internal Medicineinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/13704