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1. Chronic leucine supplementation induced alteration of insulin signalling pathways in skeletal muscle without resistance of glucose transport in rats

Author

Dupont, Joëlle, Balage, Michelle, SORNET, Claire, Tesseraud, Sophie, Dardevet, Dominique, Physiologie de la reproduction et des comportements [Nouzilly] (PRC), Institut National de la Recherche Agronomique (INRA)-Institut Français du Cheval et de l'Equitation [Saumur]-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS), Unité de Nutrition Humaine (UNH), Université d'Auvergne - Clermont-Ferrand I (UdA)-Clermont Université-Institut National de la Recherche Agronomique (INRA), Unité de Recherches Avicoles (URA), Institut National de la Recherche Agronomique (INRA), ProdInra, Migration, Institut National de la Recherche Agronomique (INRA)-Institut Français du Cheval et de l'Equitation [Saumur] (IFCE)-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS), Institut National de la Recherche Agronomique (INRA)-Université d'Auvergne - Clermont-Ferrand I (UdA)-Clermont Université, and Institut National de la Recherche Agronomique (INRA)-Institut Français du Cheval et de l'Equitation [Saumur]-Université de Tours-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], RAT, [INFO]Computer Science [cs], [INFO] Computer Science [cs], ComputingMilieux_MISCELLANEOUS, SUPPLEMENTATION
Abstract

International audience

Published
2008

2. Leucine supplementation improves muscle protein synthesis in elderly men independently of hyperaminoacidaemia

Author

Rieu, Isabelle, Balage, Michèle, Sornet, Claire, Giraudet, Christophe, Pujos, Estelle, Grizard, Jean, Mosoni, Laurent, and Dardevet, Dominique

Subjects
Male, Phenylalanine, Muscle Proteins, Carbon Dioxide, Postprandial Period, Breath Tests, Leucine, Dietary Supplements, Integrative, Humans, Insulin, Carbon Radioisotopes, Amino Acids, Muscle, Skeletal, Aged
Abstract

The present study was designed to assess the effects of dietary leucine supplementation on muscle protein synthesis and whole body protein kinetics in elderly individuals. Twenty healthy male subjects (70 +/- 1 years) were studied before and after continuous ingestion of a complete balanced diet supplemented or not with leucine. A primed (3.6 micromol kg(-1)) constant infusion (0.06 micromol kg(-1) min(-1)) of L-[1-13C]phenylalanine was used to determine whole body phenylalanine kinetics as well as fractional synthesis rate (FSR) in the myofibrillar fraction of muscle proteins from vastus lateralis biopsies. Whole body protein kinetics were not affected by leucine supplementation. In contrast, muscle FSR, measured over the 5-h period of feeding, was significantly greater in the volunteers given the leucine-supplemented meals compared with the control group (0.083 +/- 0.008 versus 0.053 +/- 0.009% h(-1), respectively, P0.05). This effect was due only to increased leucine availability because only plasma free leucine concentration significantly differed between the control and leucine-supplemented groups. We conclude that leucine supplementation during feeding improves muscle protein synthesis in the elderly independently of an overall increase of other amino acids. Whether increasing leucine intake in old people may limit muscle protein loss during ageing remains to be determined.

Published
2006

3. Leucine supplementation improves muscle protein synthesis in the elderly men independently of hyperaminoacidemia

Author

Rieu, Isabelle, Balage, Michelle, SORNET, Claire, Giraudet, Christophe, Pujos, Estelle, Grizard, Jean, Mosoni, Laurent, Dardevet, Dominique, Unité de Nutrition Humaine (UNH), Université d'Auvergne - Clermont-Ferrand I (UdA)-Clermont Université-Institut National de la Recherche Agronomique (INRA), Centre de Recherche en Nutrition Humaine, and Institut National de la Recherche Agronomique (INRA)-Université d'Auvergne - Clermont-Ferrand I (UdA)-Clermont Université

Subjects
[SDV]Life Sciences [q-bio], SUPPLEMENTATION
Abstract

International audience; The present study was designed to assess the effects of dietary leucine supplementation on muscle protein synthesis and whole body protein kinetics in elderly individuals. Twenty healthy male subjects (70 +/- 1 years) were studied before and after continuous ingestion of a complete balanced diet supplemented or not with leucine. A primed (3.6 micromol kg(-1)) constant infusion (0.06 micromol kg(-1) min(-1)) of L-[1-13C]phenylalanine was used to determine whole body phenylalanine kinetics as well as fractional synthesis rate (FSR) in the myofibrillar fraction of muscle proteins from vastus lateralis biopsies. Whole body protein kinetics were not affected by leucine supplementation. In contrast, muscle FSR, measured over the 5-h period of feeding, was significantly greater in the volunteers given the leucine-supplemented meals compared with the control group (0.083 +/- 0.008 versus 0.053 +/- 0.009% h(-1), respectively, P < 0.05). This effect was due only to increased leucine availability because only plasma free leucine concentration significantly differed between the control and leucine-supplemented groups. We conclude that leucine supplementation during feeding improves muscle protein synthesis in the elderly independently of an overall increase of other amino acids. Whether increasing leucine intake in old people may limit muscle protein loss during ageing remains to be determined.

Published
2006
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4. Un stress catabolique provoqué par un traitement à la dexamethasone induit une résistance prolongée ... l'action de la leucine sur la synthèse protéique musculaire du rat âgé

Author

Rieu, L., Sornet, Claire, Grizard, Jean, Dardevet, Dominique, Unité de nutrition et métabolisme protéique, Institut National de la Recherche Agronomique (INRA), and ProdInra, Migration

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], RAT, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2004

5. Inflammatory state and thymus, spleen and plasma protein synthesis rates differ in adult and old rats

Author

Papet, Isabelle, Dardevet, Dominique, Sornet, Claire, Béchereau, F., PRUGNAUD, J., Pouyet, C., Obled, Christiane, ProdInra, Migration, Unité de nutrition et métabolisme protéique, and Institut National de la Recherche Agronomique (INRA)

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], RAT, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2004

6. La supplémentation en leucine stimule la synthèse protéique et les activités enzymatiques mitochondriales chez le rat adulte et agé

Author

Guillet, C., Dardevet, Dominique, Giraudet, Christophe, Rousset, Paulette, Sornet, Claire, ProdInra, Migration, Unité de nutrition et métabolisme protéique, and Institut National de la Recherche Agronomique (INRA)

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], RAT, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2003

7. Effet de la dexaméthasone sur la synthèse protéique de muscles squelettiques de rats adultes et âgés

Author

Savary, Isabelle, Debras, Elisabeth, Dardevet, Dominique, Sornet, Claire, Capitan, Pierre, Prugnaud, P., Patureau-Mirand, Philippe, Grizard, Jean, Unité de nutrition et métabolisme protéique, Institut National de la Recherche Agronomique (INRA), and ProdInra, Migration

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], RAT, ComputingMilieux_MISCELLANEOUS
Abstract

Suppl., résumé de poster P.8; National audience

Published
1997

8. Postprandial insulin suppression by diazoxide greatly impairs muscle protein synthesis

Author

Sinaud, S., Balage, Michelle, Bromont, S., Dardevet, Dominique, Sornet, Claire, Grizard, Jean, Unité de nutrition et métabolisme protéique, Institut National de la Recherche Agronomique (INRA), and ProdInra, Migration

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
1996

9. Phosphatidylinositol 3-kinase and p70 S6 kinase participate in the regulation of protein turnover in skeletal muscle by insulin and insulin-like growth factor I

Author

Dardevet, Dominique, Sornet, Claire, Vary, T., Grizard, Jean, ProdInra, Migration, Unité de nutrition et métabolisme protéique, and Institut National de la Recherche Agronomique (INRA)

Subjects
[SDV.MHEP.EM] Life Sciences [q-bio]/Human health and pathology/Endocrinology and metabolism, [SDV.MHEP.EM]Life Sciences [q-bio]/Human health and pathology/Endocrinology and metabolism, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
1996

10. Signal transduction in insulin and IGF-1 action on skeletal muscle protein turnover

Author

Dardevet, Dominique, Sornet, Claire, Sinaud, S., Grizard, Jean, Unité de nutrition et métabolisme protéique, Institut National de la Recherche Agronomique (INRA), and ProdInra, Migration

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], TRANSDUCTION SIGNAL, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
1995

12. Insulin-like growth factor-1 and insulin resistance in skeletal muscles of adult and old rats

Author

Dardevet, Dominique, Sornet, Claire, Attaix, Didier, Baracos, V.E., Grizard, Jean, Unité de nutrition et métabolisme protéique, and Institut National de la Recherche Agronomique (INRA)

Subjects
RAT, [SDV.MHEP.EM]Life Sciences [q-bio]/Human health and pathology/Endocrinology and metabolism, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
1994

14. Insulin-like growth factor-1 and insulin resistance in skeletal muscles of adult and old rats

Author

Dardevet, Dominique, Sornet, Claire, Attaix, Didier, Baracos, V.E., Grizard, Jean, Unité de nutrition et métabolisme protéique, and Institut National de la Recherche Agronomique (INRA)

Subjects
RAT, [SDV.MHEP.EM]Life Sciences [q-bio]/Human health and pathology/Endocrinology and metabolism, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
1994

16. Alterations of IGF-1 and insulin action with aging in rat skeletal muscle

Author

Dardevet, Dominique, Sornet, Claire, Balage, Michelle, Grizard, Jean, Unité de nutrition et métabolisme protéique, Institut National de la Recherche Agronomique (INRA), and ProdInra, Migration

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], RAT, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
1992

17. Influence of low-and high-protein diets on insulin-like growth factor-1 binding to skeletal muscle and liver in the growing rat

Author

Dardevet, Dominique, Manin, M., Balage, Michelle, Sornet, Claire, Grizard, Jean, Unité de nutrition et métabolisme protéique, Institut National de la Recherche Agronomique (INRA), and ProdInra, Migration

Subjects
[SDV.AEN] Life Sciences [q-bio]/Food and Nutrition, RAT, [SDV.AEN]Life Sciences [q-bio]/Food and Nutrition, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
1991

18. Lactation failed to alter in vivo insulin effect on whole body leucine kinetics and insulin receptor tyrosine kinase activity in skeletal muscle from goats

Author

Balage, Michelle, Tesseraud, Sophie, CHAMPREDON, C., Sornet, Claire, Debras, Elisabeth, Grizard, Jean, ProdInra, Migration, Unité de nutrition et métabolisme protéique, and Institut National de la Recherche Agronomique (INRA)

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
1990

19. Recepteurs d'insuline et activite tyrosine kinase dans le foie et le muscle de rat en croissance

Author

Balage, Michelle, Sornet, Claire, Grizard, Jean, Institut francilien recherche, innovation et société (IFRIS), Institut National de la Recherche Agronomique (INRA)-École des hautes études en sciences sociales (EHESS)-OST-Université Paris-Est Marne-la-Vallée (UPEM)-Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.)-ESIEE Paris-Centre National de la Recherche Scientifique (CNRS), and Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.)-Institut National de la Recherche Agronomique (INRA)-École des hautes études en sciences sociales (EHESS)-OST-Université Paris-Est Marne-la-Vallée (UPEM)-ESIEE Paris-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV]Life Sciences [q-bio], RAT, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
1988

20. INFLUENCE DE LA PRISE ALIMENTAIRE SUR LES VARIATIONS DE DIFFÉRENTS CONSTITUANTS PLASMATIQUES CHEZ LA VACHE EN FIN DE GESTATION ET EN DÉBUT DE LACTATION

Author

Doreau, M., Flechet, Jeannette, Lefaivre, Renée, Ollier, A., Sornet, Claire, and Revues Inra, Import

Subjects
[SDV.IMM] Life Sciences [q-bio]/Immunology, [SDV.BA] Life Sciences [q-bio]/Animal biology, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, [SDV.GEN.GA] Life Sciences [q-bio]/Genetics/Animal genetics, [SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], [SDV.BC.IC] Life Sciences [q-bio]/Cellular Biology/Cell Behavior [q-bio.CB], [SDV.BBM.BM] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, [SDV.BC] Life Sciences [q-bio]/Cellular Biology, [SDV.MP] Life Sciences [q-bio]/Microbiology and Parasitology, ComputingMilieux_MISCELLANEOUS
Published
1983

21. VARIATIONS DE QUELQUES CONSTITUANTS PLASMATIQUES CHEZ LA JUMENT ALLAITANTE EN FIN DE GESTATION ET DÉBUT DE LACTATION

Author

Doreau, M., Martin-Rosset, W., Barlet, J.P., Dubroeucq, H., Roux, R., Sornet, Claire, and Revues Inra, Import

Subjects
[SDV.IMM] Life Sciences [q-bio]/Immunology, [SDV.BA] Life Sciences [q-bio]/Animal biology, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, [SDV.GEN.GA] Life Sciences [q-bio]/Genetics/Animal genetics, [SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], [SDV.BC.IC] Life Sciences [q-bio]/Cellular Biology/Cell Behavior [q-bio.CB], [SDV.BBM.BM] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, [SDV.BC] Life Sciences [q-bio]/Cellular Biology, [SDV.MP] Life Sciences [q-bio]/Microbiology and Parasitology, ComputingMilieux_MISCELLANEOUS
Published
1981

22. ÉVOLUTION DE DIFFÉRENTS PARAMÈTRES SANGUINS DU MÉTABOLISME ÉNERGÉTIQUE CHEZ LA VACHE LAITIERE EN DÉBUT DE LACTATION

Author

Coulon, J.B., Remond, B., Doreau, M., Journet, M., Flechet, Jeanne, Lefaivre, Renée, Marquis, B., Sornet, Claire, and Revues Inra, Import

Subjects
[SDV.IMM] Life Sciences [q-bio]/Immunology, [SDV.BA] Life Sciences [q-bio]/Animal biology, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, [SDV.GEN.GA] Life Sciences [q-bio]/Genetics/Animal genetics, [SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], [SDV.BC.IC] Life Sciences [q-bio]/Cellular Biology/Cell Behavior [q-bio.CB], [SDV.BBM.BM] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, [SDV.BC] Life Sciences [q-bio]/Cellular Biology, [SDV.MP] Life Sciences [q-bio]/Microbiology and Parasitology, ComputingMilieux_MISCELLANEOUS
Published
1985

23. URAEMIA IN THE MARE: EFFECTS OF SEASONAL VARIATIONS, OF ENERGY LEVEL OF THE DIET AND INDIVIDUAL DIFFERENCES

Author

Doreau, M., Martin-Rosset, W., Dubroeuco, H., Sornet, Claire, and Revues Inra, Import

Subjects
[SDV.IMM] Life Sciences [q-bio]/Immunology, [SDV.BA] Life Sciences [q-bio]/Animal biology, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, [SDV.GEN.GA] Life Sciences [q-bio]/Genetics/Animal genetics, [SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], [SDV.BC.IC] Life Sciences [q-bio]/Cellular Biology/Cell Behavior [q-bio.CB], [SDV.BBM.BM] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, [SDV.BC] Life Sciences [q-bio]/Cellular Biology, [SDV.MP] Life Sciences [q-bio]/Microbiology and Parasitology, ComputingMilieux_MISCELLANEOUS
Published
1985

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