[Influence of prolonged protein-free diet on the amino acid content of blood and muscles in rats].
The influence of a protein-free diet in adult male rats has been evaluated for a 6-week period. Nitrogen retention, hepatic protein and free amino acid content in blood and muscle were determined as adaptation criteria. Long-lasting protein depletion did not modify the pattern of response affering in a shorter period: i.e. sparing of nitrogen and use of endogenous amino acids for protein synthesis. Except for lysine, arginine and histidine, the essential amino acids decreased in blood and the non-essential acids increased. The final effect was a decrease of the essential to non-essential amino acid ratio and a decrease in all amino acids in muscle.
D000222:Adaptation, Physiological; D000596:Amino Acids / Q000097:blood / Q000378:metabolism*; D000818:Animals; D008099:Liver / Q000378:metabolism; D008297:Male; D009132:Muscles / Q000378:metabolism*; D011488:Protein Deficiency / Q000378:metabolism*; D051381:Rats; D013997:Time Factors
D000596:Amino Acids
Influence du jeûne protéique de longue durée sur la teneur en acides aminés sanguins et musculaires du rat.