Effect Of Diets With Different Lipid's Sources On Serum And Brain Fatty Acids Profile. Experimental Model.

BACKGROUND: It´s widely accepted and recognized the importance of diet in maintaining health. Diet lipid profile is important to prevent chronic diseases and improve the quality of individual's life. OBJECTIVE: The objective of this report is to analyze the effect of different sources of dietary lipids with standard and high concentration on growing rats. METHODS: Experimental diets contained 15 or 42% kcal of fat, provided by butter (B), olive oil (O), high oleic sunflower oil (HO) and sunflower oil (S). Control diet (C) was normocaloric with 15%kcal of fat provided by soy oil. All diets were complete in the other nutrients according to AIN 1993 and were administered for 40 days. RESULTS: Daily intake was similar in all groups. The administration of these diets provoked changes in serum fatty acid profile in response to the differences sources of dietary lipids used; no changes were observed in brain´s fatty acids. CONCLUSION: These results would suggest that the organism tries first to supply brain´s fatty acid needs at the expense of its modification in serum.