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muscle protein synthesis also increased but to a lesser magnitude than the increment in protein breakdown. This discordance between whole-body and regional kinetics is best explained by the contrasting physiology between the muscle and the liver.
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jasn.asnjournals.org/cgi/content/full/16/4/862
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Breakdown of protein therefore results in a much larger range of acids, alcohols gases (hydrogen, carbon dioxidem, hydrogen sul- phide and ammonia) and other compounds. Breakdown of portein nearly always results in ammonia, which is alkaline and has a strong smell.
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www.dairykorea.com/fdk/2000/2368/2368-00054.htm
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While some protein breakdown may occur during exercise, protein build-up is enhanced during the recovery and the effectiveness of protein synthesis is increased. When muscle glycogen stores are high, protein contributes no more than 5% of the energy needed.
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www.marathonguide.com/training/articles/Nutrition.cfm
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This continual degradation of cell proteins was first discovered through the classic experiments of Schoenheimer and coworkers in the 1940s using 15N-labeled amino acids in adult animals (Schoenheimer 1942 ). However, after this surprising discovery, knowledge about protein breakdown developed quite slowly.
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jn.nutrition.org/cgi/content/full/129/1/227S
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The loss of muscle tissue during infection results in large part from accelerated skeletal muscle protein breakdown. Recent studies suggest that macrophage-derived products secreted during infection may signal increased muscle proteolysis.
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www.medscape.com/medline/abstract/2035628
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Diets with protein of inferior quality may increase protein breakdown in skeletal muscle but the experimental results are inconsistent. ... Diets with protein of inferior quality may increase protein breakdown in skeletal muscle but the experimental results are inconsistent. To elucidate the relationship,
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www.medscape.com/medline/abstract/11348559
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Effects of anabolic agents on protein breakdown in L6 myoblasts. ... 3. Protein breakdown is stimulated by dexamethasone by a process that takes several hours to be expressed, but is more pronounced over a 4 h measurement period than over 18h. The glucocorticoid response is prevented by insulin or by cycloheximide.
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www.ncbi.nlm.nih.gov/pubmed/6342615
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PROTEIN BREAKDOWN IN THE BRAIN. SUBCELLULAR DISTRIBUTION AND PROPERTIES OF NEUTRAL AND ACID PROTEINASES. ... PROTEIN BREAKDOWN IN THE BRAIN. SUBCELLULAR DISTRIBUTION AND PROPERTIES OF NEUTRAL AND ACI...PROTEIN BREAKDOWN IN THE BRAIN. SUBCELLULAR DISTRIBUTION AND PROPERTIES OF NEUTRAL AND ACID PROTEINASES.
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www.ncbi.nlm.nih.gov/pubmed/14101962
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Since there is little information about the effects of feeding and fasting on protein degradation, we studied protein breakdown in whole-body and leg muscle of 10- and 28-day-old piglets. We used radioactive amino acids (builing blocks of protein) as markers for muscle protein breakdown analysis.
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www.ars.usda.gov/research/publications/publications.htm...
www.ars.usda.gov/research/publications/publications.htm?SEQ_NO_115=183509
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