Liver tissues stored in ice-cold buffer were homogenized and used for the
measurement of fatty acid oxidation ex vivo as described previously [19]. Briefly, liver
homogenates were incubated at 30°C for 90 min in a reaction buffer (pH 7.4)
containing 0.5 μCi [14C]palmitate, 2 mmol/L L-carnitine and 0.05 mmol/L CoA. CO2
produced from the reaction was captured in 1 M NaOH; 1 M perchloric acid was
used to stop the reaction. Palmitate oxidation rates were determined by measuring the
14C radioactivity in captured CO2 and acid-soluble metabolites.