Compositions for Enhancing the Production of PPAR and/or PPAR-Associated Factors
The present inventors focused on certain nutritional compositions known to have activity of controlling blood glucose levels. These foods were administered to rats for long periods, and real-time PCR was used to analyze the expression of genes associated with lipid metabolism in the liver and adipose tissues. As a result, the present inventors found that the expression of the PPARα gene is enhanced by these foods, and that this is accompanied by suppressed expression of fatty acid synthase and enhanced expression of a group of PPARα target genes associated with fatty acid metabolism. The present inventors also confirmed the effect of these foods in enhancing the expression of PPARγ and adiponectin, and discovered that these foods have the activity of enhancing the production of PPAR and PPAR-associated factors.
1 . A method for restoring insulin sensitivity, which comprises the step of administering to a patient in need of such treatment, a nutritional composition for enhancing the production of a PPAR and/or PPAR-associated factor, wherein the composition comprises proteins, fats, and carbohydrates such that proteins account for 10% to 25% of its energy, fats account for 10% to 35% of its energy, and carbohydrates account for 40% to 60% of its energy, and wherein oleate esters account for 60% to 90% of the energy in the fats, and palatinose and/or trehalose account for 60% to 100% of the energy in the carbohydrates
2 . The method of claim 1 , wherein the PPAR is a PPARα and/or a PPARγ.
3 . The method of claim 1 , wherein the PPAR is a PPARγ.
4 . The method of claim 1 , wherein the PPAR-associated factor is adiponectin.
5 . The method of claim 1 , wherein the composition comprises at least one fat selected from a milk phospholipid, a soybean lecithin, a high oleic sunflower oil, and a perilla oil.