Journal
AMINO ACIDS
Volume 22, Issue 1, Pages 15-26Publisher
SPRINGER-VERLAG
DOI: 10.1007/s726-002-8198-6
Keywords
amino acids; acute phase response; poultry; stable isotopes; hemopexin; protein synthesis
Categories
Ask authors/readers for more resources
Fractional rates of liver, muscle, plasma and acute phase portein synthesis were measured in chickens injected with saline or E. coli lipopolysaccharide (LPS). Mate Single Comb White Leghorns were infused with a primed constant infusion of N-15-L-methionine and H-2(5)-L-phenylalanine into the portal vein for 2 h. Changes in plasma amino acid enrichment were similar for both amino acids reaching an apparent plateau by the 30min sampling time. The enrichment of plasma protein-bound amino acid was measurable after I h of isotope infusion and increased linearly over 2h. LPS injection decreased free phenylalanine enrichment in the carotid artery (50%), and reduced tissue free methionine enrichment in the liver, pectoralis, and gastrocnemius by 16, 41, and 31% respectively. Isotopic enrichment of phenylalanine in liver protein, plasma protein and hemopexin increased in LPS injected birds relative to control birds. Fractional rates of muscle protein synthesis were not affected by LPS injection, however, liver protein, plasma protein, and hemopexin fractional synthesis rates increased 141, 161 and 266% respectively compared with untreated animals.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available