Fasting Whole-Body Energy Homeostasis and Hepatic Energy Metabolism in Nondiabetic Humans with Fatty Liver

Table 2

Whole-body energy metabolism as assessed by indirect calorimetry and high-energy phosphate hepatic relative content as assessed by ³¹P MRS.

	Fatty liver	Controls	value
Indirect calorimetry
REE (Kcal/die)			0.64
% of predicted REE (%)			0.25
Respiratory quotient			0.93
Glucose oxidation (mg/(kg min))			0.83
Lipid oxidation (mg/(kg min))			0.58
Hepatic ^31P-MRS
% PME			0.48
% Pi			0.94
% PDE			0.72
% γ-ATP			0.50
% α-ATP			0.10
% β-ATP			0.47
% ATP			0.49
Pi/γ-ATP ratio			0.83
Pi/ATP ratio			0.63
PME/Pi ratio			0.56
PME/γ-ATP ratio			0.79
PME/ATP ratio			0.36

The peak area of each metabolite (PME, Pi, PDE, γ-ATP, α-ATP, and β-ATP) was expressed as a percentage of the total ³¹P-MR signal (the sum of all the resonances). ; independent-samples -test (2-tailed). REE: resting energy expenditure.