Amino acids and insulin are regulators of muscle protein synthesis in neonatal pigs
The stage of development between birth and weaning in mammals is a period of very rapid growth that is crucial for the long-term well-being of the animal. The rate of protein deposition in neonatal animals is very high because dietary protein is efficiently utilized to increase body protein mass. Ou...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2010-01-01
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| Series: | Animal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1751731110000984 |
| _version_ | 1818658402586329088 |
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| author | T.A. Davis A. Suryawan R.A. Orellana M.L. Fiorotto D.G. Burrin |
| author_facet | T.A. Davis A. Suryawan R.A. Orellana M.L. Fiorotto D.G. Burrin |
| author_sort | T.A. Davis |
| collection | DOAJ |
| description | The stage of development between birth and weaning in mammals is a period of very rapid growth that is crucial for the long-term well-being of the animal. The rate of protein deposition in neonatal animals is very high because dietary protein is efficiently utilized to increase body protein mass. Our studies in neonatal pigs have shown that this high efficiency of protein deposition is largely due to the marked increase in protein synthesis after feeding, and this response is particularly profound in the skeletal muscle. The enhanced stimulation of muscle protein synthesis in neonates after feeding is independently mediated by the rise in insulin and amino acids and this response declines with age. Intracellular signaling components that respond to the postprandial rise in amino acids and insulin have been identified and their activation has been shown to be elevated in skeletal muscle of neonatal pigs after a meal and to decrease with development. The enhanced activation of these components in the amino acid and insulin signaling pathways in neonatal muscle contributes to the high rate of muscle protein synthesis and rapid gain in skeletal muscle mass in newborn pigs, which are essential determinants of efficient growth during development. |
| first_indexed | 2024-12-17T03:56:48Z |
| format | Article |
| id | doaj.art-6f08a989e7fa485e9db8ee5860bfe80f |
| institution | Directory Open Access Journal |
| issn | 1751-7311 |
| language | English |
| last_indexed | 2024-12-17T03:56:48Z |
| publishDate | 2010-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Animal |
| spelling | doaj.art-6f08a989e7fa485e9db8ee5860bfe80f2022-12-21T22:04:36ZengElsevierAnimal1751-73112010-01-0141117901796Amino acids and insulin are regulators of muscle protein synthesis in neonatal pigsT.A. Davis0A. Suryawan1R.A. Orellana2M.L. Fiorotto3D.G. Burrin4United States Department of Agriculture/Agriculture Research Service Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, USAUnited States Department of Agriculture/Agriculture Research Service Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, USAUnited States Department of Agriculture/Agriculture Research Service Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, USAUnited States Department of Agriculture/Agriculture Research Service Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, USAUnited States Department of Agriculture/Agriculture Research Service Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, USAThe stage of development between birth and weaning in mammals is a period of very rapid growth that is crucial for the long-term well-being of the animal. The rate of protein deposition in neonatal animals is very high because dietary protein is efficiently utilized to increase body protein mass. Our studies in neonatal pigs have shown that this high efficiency of protein deposition is largely due to the marked increase in protein synthesis after feeding, and this response is particularly profound in the skeletal muscle. The enhanced stimulation of muscle protein synthesis in neonates after feeding is independently mediated by the rise in insulin and amino acids and this response declines with age. Intracellular signaling components that respond to the postprandial rise in amino acids and insulin have been identified and their activation has been shown to be elevated in skeletal muscle of neonatal pigs after a meal and to decrease with development. The enhanced activation of these components in the amino acid and insulin signaling pathways in neonatal muscle contributes to the high rate of muscle protein synthesis and rapid gain in skeletal muscle mass in newborn pigs, which are essential determinants of efficient growth during development.http://www.sciencedirect.com/science/article/pii/S1751731110000984growthnewbornprotein metabolismtranslation initiationmammalian target of rapamycin |
| spellingShingle | T.A. Davis A. Suryawan R.A. Orellana M.L. Fiorotto D.G. Burrin Amino acids and insulin are regulators of muscle protein synthesis in neonatal pigs Animal growth newborn protein metabolism translation initiation mammalian target of rapamycin |
| title | Amino acids and insulin are regulators of muscle protein synthesis in neonatal pigs |
| title_full | Amino acids and insulin are regulators of muscle protein synthesis in neonatal pigs |
| title_fullStr | Amino acids and insulin are regulators of muscle protein synthesis in neonatal pigs |
| title_full_unstemmed | Amino acids and insulin are regulators of muscle protein synthesis in neonatal pigs |
| title_short | Amino acids and insulin are regulators of muscle protein synthesis in neonatal pigs |
| title_sort | amino acids and insulin are regulators of muscle protein synthesis in neonatal pigs |
| topic | growth newborn protein metabolism translation initiation mammalian target of rapamycin |
| url | http://www.sciencedirect.com/science/article/pii/S1751731110000984 |
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