The method also yields estimates of first-pass extraction by the splanchnic bed, and whole-body flux of Phe.
In these studies (Henderson et al. 2007a, b, 2008), we showed that whole body glycerol flux (lipolysis), plasma free fatty acid (FFA) flux and plasma FFA concentration were elevated to a greater extent in men than women during 3 h of postexercise recovery (Henderson et al. 2007a).
where Q e(X) and ϕ bb are the local external quantum efficiency and the black body photon flux with respect to the photon energy E of the EL peak of the subcell, respectively, V X) is the local junction voltage, and kT/q is the thermal voltage.
This observation thus coincides with the trend toward increased whole body leucine flux and significant increase in leucine rate of appearance (Table 1), which is a measure of protein degradation.
It has also been shown that glycine to serine inter-conversion by SHMT accounts for approximately 41% of whole body glycine flux inclusive of both mitochondrial and cytoplasmic processes [ 26].
In addition, the LBW men had slightly higher fasting plasma glucose and reduced insulin-stimulated whole-body glycolytic flux but normal whole-body glucose disposal, glucose oxidation, non-oxidative glucose metabolism and energy expenditure in the fasting and insulin-stimulated state.
Whole-body arginine flux was calculated as the product of endogenous flux and body weight.
The infused HMTBA increased whole-body plasma flux of Met by 6.5 mmol/h (from 17.9 to 24.4 mmol/h).
IRH animals had a lower N digestibility, increased oxidation of amino acids and lower N balance but whole-body protein flux was unaffected.
Whole-body Phe flux was estimated as the product of kel, steady-state plasma Phe concentration, and the mean distribution vol estimated from IV Phe kinetics (Eq 3).
To test if casein induces a slower rate of gastric emptying in cats than whey protein, L-[1-C]phenylalanine (Phe) was dosed orally into 9 adult cats to estimate gastric emptying and whole-body Phe flux.
