Comparison of the anti‑inflammatory effects of vitamin E and vitamin D on a rat model of dextran sulfate sodium‑induced ulcerative colitis
- Xing Fan
- Jie Yin
- Jiye Yin
- Xiechuan Weng
- Rigao Ding
Affiliations: National Beijing Center for Drug Safety Evaluation and Research, State Key Laboratory for Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, P.R. China, Department of Neuroscience, Beijing Institute of Basic Medical Sciences, Beijing 100850, P.R. China, National Beijing Center for Drug Safety Evaluation and Research, State Key Laboratory for Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, P.R. China
- Published online on: January 13, 2023 https://doi.org/10.3892/etm.2023.11797
Copyright: © Fan
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The present study aimed to compare the clinical effects of vitamin E and vitamin D on a rat model of dextran sulfate sodium (DSS)‑induced ulcerative colitis (UC), and to elucidate the underlying mechanisms associated with changes in the levels of cytokines. After successful establishment of the rat model of DSS‑induced UC, prednisolone (1 mg/kg), vitamin D (50 ng) and vitamin E (6, 30 and 150 IU/kg) were orally administered for 1 week. The pharmacodynamics were evaluated by a daily combination of clinical observation (CO) scores, histopathological evaluations and assessment of molecular markers of inflammation. Administration of vitamin D, vitamin E (30 and 150 IU/kg), prednisolone, and the combination of vitamin D and vitamin E resulted in a decrease in CO scores. The severity of inflammation of the colon was markedly alleviated in the treatment groups compared with that in the untreated DSS group according to the results of histopathological examination; however, they showed different inhibitory effects on the levels of some cytokines. In conclusion, the present results indicated that oral administration of vitamin E could promote recovery of DSS‑induced UC by the inhibition of proinflammatory cytokines, and that its underlying mechanism may differ from that of vitamin D and glucocorticoid drugs.