Branched Chain Amino Acid Uptake and Muscle Free Amino Acid Concentrations Predict Postoperative Muscle Nitrogen Balance

Insulin and muscle amino acid balance.

Branched Chain Amino Acid Aminotransferase

The kinetics of transamination reactions catalyzed by pig heart “branched chain amino acid” aminotransferase was investigated. The activation of aged preparations by 2mercaptoethanol, previously noted, was associated with increases in both the maximum velocity and enzyme-substrate affinities. This implies a protein conformational change. The sharp pH optimum observed with standard assay conditi...

Effects of squat exercise and branched-chain amino acid supplementation on plasma free amino acid concentrations in young women.

The present study was conducted to examine alterations in plasma free amino acid concentrations induced by squat exercise and branched-chain amino acid (BCAA) supplementation in young, untrained female subjects. In the morning on the exercise session day, participants ingested drinks containing either BCAA (isoleucine:leucine:valine=1:2.3:1.2) or dextrin (placebo) at 0.1 g/kg body weight 15 min...

Effect of Branched-Chain Amino Acid Supplementation on O2 Uptake Kinetics and Time to Exhaustion in Trained Women

Objective The aim of this study was to investigate the effect of Branched-Chain Amino Acid (BCAA) supplementation on O2 uptake kinetics and the time to exhaustion in trained women.  Methods In this quasi-experimental study with pre-test/post-test design, participants were 20 trained women (Mean±SD age, 21.3±0.5 years). They were randomly assigned into two groups of BCAA (received 45mg/kg/d BCA...

Regulation of branched-chain amino acid catabolism.

Catabolism of the branched-chain amino acids is regulated in part at the step catalyzed by the branched-chain alpha-ketoacid dehydrogenase complex. Previous work suggests both short-term and long-term control mechanisms are involved in regulation of the kinase responsible for phosphorylation and inactivation of the branched-chain alpha-ketoacid dehydrogenase complex. Recent work of this laborat...