Selenium Alleviates Ammonia-Induced Splenic Cell Apoptosis and Inflammation by Regulating the Interleukin Family/Death Receptor Axis and Nrf2 Signaling Pathway
- 18 May 2022
- journal article
- research article
- Published by Springer Science and Business Media LLC in Biological Trace Element Research
- Vol. 201 (4), 1748-1760
- https://doi.org/10.1007/s12011-022-03279-3
Abstract
Ammonia (NH3) is a harmful gas in livestock houses. So far, many researchers have demonstrated that NH3 is detrimental to animal and human organs. Selenium (Se) is one of the essential trace elements in the body and has a good antioxidant effect. However, there was little conclusive evidence that Se alleviated NH3 poisoning. To investigate the toxic mechanism of NH3 on pig spleen and the antagonistic effect of L-selenomethionine, a porcine NH3-poisoning model and an L-selenomethionine intervention model were established in this study. Our results showed that NH3 exposure increased the apoptosis rate, while L-selenomethionine supplementation alleviated the process of excessive apoptosis. Immunofluorescence staining, real-time quantitative polymerase chain reaction (qRT-PCR), and western blot results confirmed that exposure to NH3 changed the expression levels of interleukin family factors, apoptosis, death receptor, and oxidative stress factors. Our study further confirmed that excessive NH3 induced inflammatory response and mediated necroptosis leading to cell apoptosis by activating the Nrf2 signaling pathway. Excessive NH3 could mediate spleen injury through oxidative stress-induced mitochondrial dynamics disorder. L-Selenomethionine could alleviate inflammation and abnormal apoptosis by inhibiting the IL-17/TNF-α/FADD axis. Our study would pave the way for comparative medicine and environmental toxicology.Keywords
Funding Information
- China Agriculture Research System of MOF and MARA (Project No. CARS-35-05B)
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