Effect of intravenous amino acids on protein kinetics in preterm infants.

Effect of intravenous amino acids on protein kinetics in preterm infants. Research Abstract Details 

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Effect of intravenous amino acids on protein kinetics in preterm infants. Abstract Text:

Satish C Kalhan,John M Edmison,

PURPOSE OF REVIEW: To summarize recent findings of the effects of intravenous amino acids on protein kinetics in low-birth-weight infants and to describe the potential cellular mechanism for these observations. RECENT FINDINGS: Amino acids administered intravenously for 3-5 h in infants have been shown to suppress whole-body proteolysis. Recent data in low-birth-weight infants show that an increase in the dose of amino acid caused a suppression of proteolysis, and a decrease in the rate of glutamine and urea synthesis. These responses returned to basal state, however, when the amino acid infusion continued for 20-24 h. Supplementation with glutamine sustained the suppression of proteolysis after 3-5 days. Plasma insulin concentration did not change during the amino acid infusion. Data from studies in adults and from in vitro studies suggest that the amino acids impact protein breakdown and synthesis via the mammalian target of rapamycin pathway, stimulating initiation of translation and suppressing autophagic proteolysis. SUMMARY: Intravenous amino acids, by increasing extracellular amino acid concentration, transiently stimulate protein synthesis and suppress protein breakdown. These effects return to basal state when the amino acid infusions are prolonged. The mechanism of this adaptive response remains to be determined.

Effect of intravenous amino acids on protein kinetics in preterm infants. Publishing Authors By Initials

SC Kalhan,JM Edmison,

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Effect of intravenous amino acids on protein kinetics in preterm infants. Journal Published:

PUBLICATION TYPE: Review

Journal: Current opinion in clinical nutrition and metaboli

VOLUME: 10

Page Numbers: 69-74

Journal Abbreviation:

ISSN: 1363-1950

DAY: 3

MONTH: Jan

YEAR: 2007

Effect of intravenous amino acids on protein kinetics in preterm infants. Information

Number of References: 39

LANGUAGE: eng

NlmUniqueID: 9804399

Effect of intravenous amino acids on protein kinetics in preterm infants. Keywords Mesh Terms:

KEYWORDS: Proteins

MESH TERMS: metabolism

Chemical & Substance for Abstract: Effect of intravenous amino acids on protein kinetics in preterm infants. Information

Substance Name: Phenylalanine

Registry Number: 63-91-2

Grant and Affiliation Information for Effect of intravenous amino acids on protein kinetics in preterm infants.

AFFILIATION: Department of Gastroenterology, Cleveland Clinic Foundation, Lerner Research Institute, Cleveland, Ohio 44195, USA. sck@case.edu

Country: England

AGENCY: United States NCRR

GRANT: RR00080

ACRONYM: RR

MEDLINETA: Curr Opin Clin Nutr Metab Care

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