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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Carbohydrate metabolism and de novo lipogenesis in human obesity.

Respiratory exchange was measured during 14 consecutive hours in six lean and six obese individuals after ingestion of 500 g of dextrin maltose to investigate and compare their capacity for net de novo lipogenesis. After ingestion of the carbohydrate load, metabolic rates rose similarly in both groups but fell earlier and more rapidly in the obese. RQs also rose rapidly and remained in the range of 0.95 to 1.00 for approximately 8 h in both groups. During this time, RQ exceeded 1.00 for only short periods of time with the result that 4 +/- 1 g and 5 +/- 3 g (NS) of fat were synthesized via de novo lipogenesis in excess of concomitant fat oxidation in the lean and obese subjects, respectively. Results demonstrate that net de novo lipid synthesis from an unusually large carbohydrate load is not greater in obese than in lean individuals.[1]


  1. Carbohydrate metabolism and de novo lipogenesis in human obesity. Acheson, K.J., Schutz, Y., Bessard, T., Flatt, J.P., Jéquier, E. Am. J. Clin. Nutr. (1987) [Pubmed]
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