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  • Title: N-acetylcysteine attenuates intrauterine growth retardation-induced hepatic damage in suckling piglets by improving glutathione synthesis and cellular homeostasis.
    Author: Zhang H, Su W, Ying Z, Chen Y, Zhou L, Li Y, Zhang J, Zhang L, Wang T.
    Journal: Eur J Nutr; 2018 Feb; 57(1):327-338. PubMed ID: 27722780.
    Abstract:
    PURPOSE: The objective of the present study was to test the hypothesis that N-acetylcysteine (NAC) may play beneficial roles against intrauterine growth retardation (IUGR)-induced hepatic damage in suckling piglets. METHODS: Fourteen IUGR and seven normal birth weight (NBW) neonatal male piglets were selected. Piglets were weaned at 7 days of postnatal age and fed the control formula milk (NBW-CON and IUGR-CON groups) or the control formula milk supplemented with 1.2 g/kg NAC (IUGR-NAC group) for 14 days (n = 7). The plasma and liver samples were analyzed for the parameters related to hepatic damage, redox status, apoptosis, and autophagy. RESULTS: Compared with the NBW-CON group, IUGR-CON group exhibited increased activities of plasma aminotransferases, increased numbers of apoptotic hepatocytes, as well as higher concentrations of protein carbonyl, malondialdehyde (MDA), microtubule-associated protein 1 light chain 3 beta, and phospholipid-conjugated form (MAP1LC3B-II), along with a decrease in the content of reduced glutathione (GSH). NAC treatment increased GSH content and GSH-to-oxidized GSH ratio in the liver of IUGR-NAC group, most likely owing to the improved activities of γ-glutamine-cysteine ligase, γ-glutamine-cysteine synthetase, and glutathione reductase. The hepatic protein carbonyl and MDA contents were decreased in the IUGR-NAC group compared with the IUGR-CON group. In addition, NAC-treated piglets had an increased content of B cell lymphoma/leukemia 2 protein, whereas a decreased expression level of MAP1LC3B-II in the liver. CONCLUSIONS: NAC may have beneficial effects in improving GSH synthesis and cellular homeostasis in the liver of IUGR suckling piglets.
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