Sus scrofa
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ABSTRACT:
PROVIDER: PRJNA167745 | ENA |
REPOSITORIES: ENA
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Project description:Background: While the mechanisms underlying the lactation-induced adaptations of intermediary metabolism and immune response have been extensively studied in rodents and dairy cows, little is known in this regard in sows. Therefore, the present study aimed to explore the lactation-induced changes in hepatic gene expression in sows during lactation. Results: Using a porcine whole-genome microarray a total of 632 differentially expressed genes in the liver of lactating compared to non-lactating sows (each n = 10) could be identified. Enrichment analysis revealed that the differentially expressed genes were mainly involved in fatty acid metabolism, pyruvate metabolism, glutathione metabolism, glycine, serine and threonine metabolism, citrate cycle, glycerophospholipid metabolism, PPAR signaling, nitrogen metabolism, and focal adhesion. The most striking observation with respect to intermediary metabolism was that genes involved in fatty acid catabolism, the catabolism of gluconeogenic amino acids, the citrate cycle and the respiratory chain were up-regulated in the liver of sows during lactation. With respect to immune response, it could be demonstrated that genes encoding acute phase proteins and genes involved in tissue repair were up-regulated and genes encoding focal adhesion molecules were down-regulated in the liver of sows during lactation. Conclusion: The results from this study indicate that energy-generating pathways and pathways involved in the delivery of gluconeogenic substrates are induced in the liver of sows during lactation. The alterations of expression of genes encoding proteins involved in immune response suggest that lactation in sows may cause an adaptive immune response which possibly counteracts hepatic inflammation.
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Project description:Large White and Meishan pigs were either non-treated or injected with mammalian 1-24 ACTH (Immediate Synachten, Novartis France) at the dose of 250 µg per animal. Pigs were sacrificed either immediately after capture from their home cage (non-treated animals) or 1 hour following ACTH injection. Adrenal glands were immediately collected from pigs and frozen on dry ice and then stored at -80°C until RNA isolation. Keywords: stress response, adrenal, gene expression, pig 47 samples
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