Abstract
Methotrexate (MTX), as a folic acid antagonist, is an effective drug in treating a wide range of malignancies and autoimmune diseases. However, the clinical use of MTX has been limited due to its side effects, the most common of which is hepatotoxicity. In this study, rats were randomly divided into six groups: three treatment groups received methotrexate and different doses of astaxanthin (AX) for 14 days. At the end of the study, blood samples were collected to determine serum levels of ALT, AST, ALP, and LDH. Also, liver tissues were isolated to evaluate antioxidant enzymes and markers of oxidative stress, histopathological damage, and expression of NF-E2-related transcription factor (Nrf2) and Heme oxygenase-1 (HO-1) genes. The results showed that administration of MTX significantly increased the levels of ALT, AST, ALP, and LDH in the blood, markers of oxidative stress, and histopathological damage in liver tissue and significantly reduced the levels of antioxidant enzymes and the expression of Nrf2 and HO-1 genes. On the other hand, treatment with AX decreased blood levels of ALT, AST, ALP, and LDH and oxidative stress markers and remarkably raises the activity of antioxidant enzymes and expression of Nrf2 and HO-1 genes in liver tissue. In addition, histopathological lesions were improved with AX administration. The findings of this study indicated that AX may be useful for the prevention of MTX-induced hepatotoxicity by improving oxidative and inflammatory changes.
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Data availability
The datasets generated during and/or analyzed during the current study are not publicly available due to [REASON(S) WHY DATA ARE NOT PUBLIC] but are available from the corresponding author on reasonable request.
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Acknowledgements
This study was supported by a grant (No: 298058) from Isfahan University of Medical Sciences, Iran. The authors would like to extend their deep and sincere gratitude to each and every one of those who helped them.
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A: Razieh Azadian, B: Adel Mohammadalipour, C: Mohammad Reza Memarzadeh, D: Mohammad Hashemnia, E: Mohammad Hosein Aarabi. A.B. and B.C. carried out the experiment. A.E. wrote the manuscript with support from B. D.E. fabricated the AB sample. E conceived the original and supervised the project. The authors declare that all data were generated in-house and that no paper mill was used.
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Azadian, R., Mohammadalipour, A., Memarzadeh, M.R. et al. Examining hepatoprotective effects of astaxanthin against methotrexate-induced hepatotoxicity in rats through modulation of Nrf2/HO-1 pathway genes. Naunyn-Schmiedeberg's Arch Pharmacol 397, 371–380 (2024). https://doi.org/10.1007/s00210-023-02581-8
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DOI: https://doi.org/10.1007/s00210-023-02581-8