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Acides aminés (structure, essentialité, transport, métabolisme)

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Book cover Traité de nutrition artificielle de l’adulte

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Abstrait

Source ďénergie, précurseurs ďhormones et de médiateurs, les acides aminés sont surtout les éléments constitutifs des protéines, lesquelles ont un rôle fonctionnel ubiquitaire: les enzymes, les anticorps, les facteurs de la coagulation, de nombreuses hormones sont des peptides ou des protéines. En outre, les protéines interviennent dans la fonction contractile des muscles (actine, myosine), dans ľarchitecture du tissu conjonctif (collagène), dans le transport plasmatique des molécules hydrophobes (acides gras, hormones stéroïdiennes, etc.). Le pool des acides aminés et celui des protéines sont en équilibre dynamique. Les facteurs conditionnant cet équilibre sont le flux ďacides aminés à partir des protéines alimentaires et de leur synthèse de novo par catabolisme protéique endogène et réactions ďinterconversion, phénomènes très dépendants du flux interorganes ďacides aminés.

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Cynober, L. (2007). Acides aminés (structure, essentialité, transport, métabolisme). In: Traité de nutrition artificielle de l’adulte. Springer, Paris. https://doi.org/10.1007/978-2-287-33475-7_5

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  • DOI: https://doi.org/10.1007/978-2-287-33475-7_5

  • Publisher Name: Springer, Paris

  • Print ISBN: 978-2-287-33474-0

  • Online ISBN: 978-2-287-33475-7

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