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  • Title: Probiotic (Enterococcus faecium) induced responses of the hepatic proteome improves metabolic efficiency of broiler chickens (Gallus gallus).
    Author: Zheng A, Luo J, Meng K, Li J, Bryden WL, Chang W, Zhang S, Wang LX, Liu G, Yao B.
    Journal: BMC Genomics; 2016 Feb 01; 17():89. PubMed ID: 26830196.
    Abstract:
    BACKGROUND: The liver plays important roles in nutrient metabolism, detoxification and immunity. Enterococcus faecium (E. faecium) is a probiotic that has been shown to have positive effects on broiler production. However, its molecular effects on liver metabolism have not been characterized. This study aims to further identify the biological roles of E. faecium by characterizing the hepatic proteomic changes of broilers (Gallus gallus) fed E. faecium using two-dimensional fluorescence difference gel electrophoresis (2-D DIGE) and mass spectrometry (MS). RESULTS: Thirty-three proteins (50 protein spots) involved in nutrient metabolism, immunity and the antioxidant system were shown to be differentially expressed in the liver of broilers fed E. faecium than from birds not fed the probiotic. The biological processes of sulphur amino acids, vitamin and cellular hormone metabolism, sulphur compound biosynthesis and protein tetramerization were enhanced in the liver of broilers fed E. faecium. However, proteins involved in calcium ion flux, cell redox homeostasis and platelet activation related to hepatic immune responses were down-regulated in broilers fed E. faecium. These results indicate that the supplementation of poultry feed with E. faecium may alter the partitioning of nutrients and promote optimal nutrient utilization. CONCLUSIONS: This study assists in unraveling the molecular effects of the dietary probiotic, E. faecium, in the liver of broiler chickens. It shows that the probiotic improves the metabolism of nutrients and decreases inflammatory responses. Our findings extend previous knowledge of the mechanism of dietary probiotic action and provide new findings for research and future probiotic development.
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