1. Taurine inhibits hydrogen peroxide-induced oxidative stress, inflammatory response and apoptosis in liver of Monopterus albus.
- Author
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Shi Y, Zhong L, Fan Y, Zhang J, Dai J, Zhong H, Fu G, and Hu Y
- Subjects
- Animals, Antioxidants metabolism, Apoptosis, Beclin-1, Environmental Biomarkers, Inflammation chemically induced, Inflammation metabolism, Inflammation veterinary, Interleukin-6 metabolism, Interleukin-8, Liver metabolism, NF-kappa B metabolism, Oxidative Stress, Proto-Oncogene Proteins c-bcl-2 metabolism, Reactive Oxygen Species metabolism, Taurine metabolism, Taurine pharmacology, Toll-Like Receptor 3 metabolism, Toll-Like Receptor 7 metabolism, Transforming Growth Factor beta1 metabolism, bcl-2-Associated X Protein metabolism, Hydrogen Peroxide metabolism, NF-E2-Related Factor 2 metabolism
- Abstract
Fish are extremely vulnerable to environmental stimulation and produce oxidative stress. Among them, hydrogen peroxide is an oxidative stress source that cannot be ignored in fish, which can cause physical disorders, inflammation and even death. Taurine was revealed to reduce oxidative damage and inflammation caused by toxic substances, but whether it can reduce toxicity of rice field eel caused by H
2 O2 has not been determined. Thus, the intervention effects of taurine on H2 O2 -induced oxidative stress, inflammation, apoptosis, and autophagy in rice field eel. The results showed that oxidative injury in the liver was determined after H2 O2 injection, as indicated by enhanced serum AST and ALT activities, inhibited the antioxidant function (increased MDA and ROS contents, decreased antioxidant enzymes, inhibited nrf2 transcription level), and induced inflammatory response (upregulated il-1β, il-6, il-8, and il-12β gene expression, downregulated tgf-β1 gene expression, activated the transcription level of nf-κb, tlr-3, and tlr-7). In addition, bax, caspase3, beclin1, and Lc3B gene expression were significantly upregulated after H2 O2 injection, while bcl2 and p62 gene expression were downregulated, leading to the occurrence of apoptosis and autophagy. In contrast, adding 0.2 and 0.5% taurine to feed significantly alleviated this damage, as indicated by the recovery of the aforementioned bioindicators, and the effect of 0.5% taurine addition is better than 0.2%. Overall, these results suggested that taurine can relieve the liver toxicity induced by H2 O2 , which enriched the toxic mechanism of H2 O2 on fish and provided evidence for the protective effect of taurine on liver., Competing Interests: Declaration of competing interest The authors declare that they have no conflict of interest., (Copyright © 2022 Elsevier Ltd. All rights reserved.)- Published
- 2022
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