Epinephrine transiently increase amino acid disappearance to lower amino...

JPEN, Journal of Parenteral and Enteral Nutrition;  September 1, 1999 ;     700+ words ......Infusion of epinephrine decreases plasma amino acid concentrations. However, the mechanism...normal healthy adults. The essential amino acid tracers L-[1-^sup 13^C] leucine and L...and blood samples obtained to determine amino acid rates of appearance and disappearance...

Genomic sequences necessary for transcriptional activation by amino acid...

The Journal of Nutrition;  July 1, 2002 ;     700+ words ......Transcriptional Activation by Amino Acid Deprivation of Mammalian Cells...these genes respond to amino acid or glucose deprivation...Abbreviations used: AAR(E), amino acid response (element...cells. Although blood amino acid levels serve to dampen...result in ...

Amino acid pharmacokinetics and safety assessment1

The Journal of Nutrition;  June 1, 2003 ;     700+ words ...ABSTRACT Tracer kinetic studies of amino acid metabolism during periods of high amino acid intake should allow insights into adaptive or maladaptive regulatory mechanisms controlling amino acid catabolic or disposal events before clinically...

Molecular and Functional Characterization of a Family of Amino Acid...

Plant Physiology;  October 1, 2004 ;     700+ words ...More than 50 distinct amino acid transporter genes have been identified in the genome...can be divided into two major superfamilies: the amino acid transporter family and the amino acid polyamine choline transporter family. Currently...

ANT(1), an aromatic and neutral amino acid tansporter in Arabidopsis

Plant Physiology;  April 1, 2001 ;     700+ words ...A new amino acid transporter was identified from the...cDNAs by expressing the cDNA in a yeast amino acid transport mutant. Transport analysis...Phylogenetic comparisons with other known amino acid transporters in plants suggests that...

Oral and intravenous tracer protocols of the indicator amino acid...

The Journal of Nutrition;  August 1, 2002 ;     700+ words ......Intravenous Tracer Protocols of the Indicator Amino Acid Oxidation Method Provide the Same Estimate...whether splanchnic uptake of the indicator amino acid ([1-^sup 13^C] phenylalanine) during...isotope administration using the indicator amino acid oxidation technique do not affect ...

The Indicator Amino Acid Oxidation Method Identified Limiting Amino Acids...

The Journal of Nutrition;  May 1, 2007 ;     700+ words ...Abstract Recent studies using the indicator amino acid oxidation (IAAO) technique in TPN-fed...been instrumental in defining parenteral amino acid requirements. None of the commercial...whether the oxidation of an indicator amino acid would decline with the addition of amino...

Amino Acid Needs for Early Growth and Development1,2

The Journal of Nutrition;  June 1, 2004 ;     700+ words ...ABSTRACT Few data exist on amino acid needs in infants and children, mainly because until recently, amino acid requirements were determined using nitrogen balance. The advent of the indicator amino acid oxidation (IAAO) method permits studies...

Amino acid composition of the fetal pig

The Journal of Nutrition;  May 1, 1999 ;     700+ words ...Amino Acid Composition of the Fetal Pig1 ABSTRACT Amino acid composition and accretion were determined in fetal pigs...of uterine arteriovenous concentrations. Nitrogen and amino acid accretion in fetal pigs increased more rapidly with gestation...

Threonine deprivation rapidly activates the system A amino acid...

The Journal of Nutrition;  July 1, 2003 ;     700+ words ......recognition of essential (indispensable) amino acid deficiency by changing their feeding...20 min, yet the cellular mechanisms of amino acid sensation in eukaryotes are poorly understood...analog in birds likely houses the in vivo amino acid chemosensor. Because amino ...

Diets Deficient in Indispensable Amino Acids Rapidly Decrease the...

The Journal of Nutrition;  September 1, 2004 ;     700+ words ...ABSTRACT Diets deficient in an indispensable amino acid have long been known to suppress food...Recent studies showed that the response to amino acid deficiency takes as little as 15 min...diet with either a control or deficient amino acid profile. Both the threonine- and ...

Leucine Is Not a Good Choice as an Indicator Amino Acid for Determining...

The Journal of Nutrition;  April 1, 2006 ;     700+ words ......indicator to be used in the indicator amino acid oxidation (IAAO) method. The goal of...2^ production, i.e., increasing test amino acid intake resulted in a linear decrease...indicates clear partitioning of the indicator amino acid between oxidation and protein synthesis...

Whole-body nitrogen and splanchnic amino acid metabolism differ in rats...

The Journal of Nutrition;  July 1, 2001 ;     700+ words ...Whole-Body Nitrogen and Splanchnic Amino Acid Metabolism Differ in Rats Fed Mixed Diets Containing Casein or Its Corresponding Amino Acid Mixture1 ABSTRACT Whole-body and splanchnic...CAS) or the corresponding crystalline L-amino acid mixture (AA) were compared. Male adult...

Indicator Amino Acid Oxidation: Concept and Application1-3

The Journal of Nutrition;  February 1, 2008 ;     700+ words ...Abstract The indicator amino acid oxidation (IAAO) method is based on the concept that when 1 indispensable amino acid (IDAA) is deficient for protein synthesis...other IDAA, including the indicator amino acid, will be oxidized. With increasing...

Amino Acid Adequacy in Pathophysiological States1,2

The Journal of Nutrition;  June 1, 2004 ;     700+ words ...ABSTRACT Amino acid utilization and, therefore, demand differ...body protein. In disease states, the amino acid composition of amino acids derived from...assess the adequacy of the administered amino acid mix. Maintenance of a positive nitrogen...