title: D-psicose, an epimer of D-fructose, favorably alters lipid metabolism in Sprague-Dawley rats.
abstract: D-Psicose, a C3 epimer of D-fructose, is known to lower body weight and adipose tissue weight and affect lipid metabolism. The precise mechanism remains unknown. It has been reported that D-psicose has a short half-life and is not metabolized in the body. To determine how D-psicose modifies lipid metabolism, rats were fed diets with or without 3% D-psicose for 4 weeks. Rats were decapitated without fasting every 6 h over a period of 24 h. Changes in serum and liver lipid levels, liver enzyme activity, and gene expression were quantified in experiment 1. Rats fed D-psicose had significantly lower serum insulin and leptin levels. Liver enzyme activities involved in lipogenesis were significantly lowered by the D-psicose diet, whereas gene expression of a transcriptional modulator of fatty acid oxidation was enhanced. In experiment 2, feeding the D-psicose diet gave significantly lower body weight (389 ± 3 vs 426 ± 6 g, p < 0.05) and food intake (23.8 ± 0.2 vs 25.7 ± 0.4 g/day, p < 0.05) compared to the control diet. Rats fed the D-psicose diet gave significantly higher energy expenditure in the light period and fat oxidation in the dark period compared to rats fed the control diet, whereas carbohydrate oxidation was lower. In summary, these results indicate that the D-psicose diet decreases lipogenesis, increases fatty acid oxidation, and enhances 24 h energy expenditure, leading to d-psicose's potential for weight management.
authors.affiliation: †Department of Nutrition, University of Nagasaki, Siebold, 1-1-1 Manabino, Nagayo-cho, Nishisonogi-gun, Nagasaki 851-2195, Japan.|§Center for Industry, University and Government Cooperation, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Nagata
authors.affiliation: †Department of Nutrition, University of Nagasaki, Siebold, 1-1-1 Manabino, Nagayo-cho, Nishisonogi-gun, Nagasaki 851-2195, Japan.
authors.forename: Akane
authors.initials: A
authors.lastname: Kanasaki
authors.affiliation: †Department of Nutrition, University of Nagasaki, Siebold, 1-1-1 Manabino, Nagayo-cho, Nishisonogi-gun, Nagasaki 851-2195, Japan.
authors.forename: Shizuka
authors.initials: S
authors.lastname: Tamaru
authors.affiliation: †Department of Nutrition, University of Nagasaki, Siebold, 1-1-1 Manabino, Nagayo-cho, Nishisonogi-gun, Nagasaki 851-2195, Japan.
authors.forename: Kazunari
authors.initials: K
authors.lastname: Tanaka
mesh_terms: D000818:Animals; D019440:Anti-Obesity Agents / Q000378:metabolism*; D001835:Body Weight; D004734:Energy Metabolism; D005632:Fructose / Q000378:metabolism*; D050356:Lipid Metabolism; D050155:Lipogenesis; D008099:Liver / Q000378:metabolism; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D019440:Anti-Obesity Agents; C003243:psicose; D005632:Fructose
keywords: 24 h energy expenditure; d-psicose; lipogenic enzyme; rare sugar; weight management