PMID- 17914131 OWN - NLM STAT- MEDLINE DCOM- 20071206 LR - 20211020 IS - 0731-5724 (Print) IS - 0731-5724 (Linking) VI - 26 IP - 5 DP - 2007 Oct TI - A MUFA-rich diet improves posprandial glucose, lipid and GLP-1 responses in insulin-resistant subjects. PG - 434-44 AB - OBJECTIVE: To study the effects of three weight-maintenance diets with different macronutrient composition on carbohydrate, lipid metabolism, insulin and incretin levels in insulin-resistant subjects. METHODS: A prospective study was performed in eleven (7 W, 4 M) offspring of obese and type 2 diabetes patients. Subjects had a BMI > 25 Kg/m2, waist circumference (men/women) > 102/88, HBA1c < 6.5% and were regarded as insulin-resistant after an OGTT (Matsuda ISIm <4). They were randomly divided into three groups and underwent three dietary periods each of 28 days in a crossover design: a) diet high in saturated fat (SAT), b) diet rich in monounsaturated fat (MUFA; Mediterranean diet) and c) diet rich in carbohydrate (CHO). RESULTS: Body weight and resting energy expenditure did not changed during the three dietary periods. Fasting serum glucose concentrations fell during MUFA-rich and CHO-rich diets compared with high-SAT diets (5.02 +/- 0.1, 5.03 +/- 0.1, 5.50 +/- 0.2 mmol/L, respectively. Anova < 0.05). The MUFA-rich diet improved insulin sensitivity, as indicated by lower homeostasis model analysis-insulin resistance (HOMA-ir), compared with CHO-rich and high-SAT diets (2.32 +/- 0.3, 2.52 +/- 0.4, 2.72 +/- 0.4, respectively, Anova < 0.01). After a MUFA-rich and high-SAT breakfasts (443 kcal) the postprandial integrated area under curve (AUC) of glucose and insulin were lowered compared with isocaloric CHO-rich breakfast (7.8 +/- 1.3, 5.84 +/- 1.2, 11.9 +/- 2.7 mmol . 180 min/L, Anova < 0.05; and 1004 +/- 147, 1253 +/- 140, 2667 +/- 329 pmol . 180 min/L, Anova <0.01, respectively); while the integrated glucagon-like peptide-1 response increased with MUFA and SAT breakfasts compared with isocaloric CHO-rich meals (4.22 +/- 0.7, 4.34 +/- 1.1, 1.85 +/- 1.1, respectively, Anova < 0.05). Fasting and postprandial HDL cholesterol concentrations rose with MUFA-rich diets, and the AUCs of triacylglycerol fell with the CHO-rich diet. Similarly fasting proinsulin (PI) concentration fell, while stimulated ratio PI/I was not changed by MUFA-rich diet. CONCLUSIONS: Weight maintenance with a MUFA-rich diet improves HOMA-ir and fasting proinsulin levels in insulin-resistant subjects. Ingestion of a virgin olive oil-based breakfast decreased postprandial glucose and insulin concentrations, and increased HDL-C and GLP-1 concentrations as compared with CHO-rich diet. FAU - Paniagua, Juan A AU - Paniagua JA AD - Lipids and Atherosclerosis Research Unit, University Hospital Reina Sofia, Cordoba, Spain. japaniaguag@yahoo.es FAU - de la Sacristana, Angel Gallego AU - de la Sacristana AG FAU - Sanchez, Esther AU - Sanchez E FAU - Romero, Inmaculada AU - Romero I FAU - Vidal-Puig, Antonio AU - Vidal-Puig A FAU - Berral, Francisco J AU - Berral FJ FAU - Escribano, Antonio AU - Escribano A FAU - Moyano, Maria Jose AU - Moyano MJ FAU - Perez-Martinez, Pablo AU - Perez-Martinez P FAU - Lopez-Miranda, Jose AU - Lopez-Miranda J FAU - Perez-Jimenez, Francisco AU - Perez-Jimenez F LA - eng GR - G0400192/MRC_/Medical Research Council/United Kingdom PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - United States TA - J Am Coll Nutr JT - Journal of the American College of Nutrition JID - 8215879 RN - 0 (Blood Glucose) RN - 0 (Dietary Carbohydrates) RN - 0 (Dietary Fats) RN - 0 (Dietary Fats, Unsaturated) RN - 0 (Fatty Acids) RN - 0 (Incretins) RN - 0 (Insulin) RN - 0 (Lipids) RN - 89750-14-1 (Glucagon-Like Peptide 1) SB - IM MH - Analysis of Variance MH - Area Under Curve MH - Blood Glucose/*metabolism MH - Calorimetry, Indirect MH - Cross-Over Studies MH - Diabetes Mellitus, Type 2/metabolism MH - Dietary Carbohydrates/*administration & dosage MH - Dietary Fats/*administration & dosage MH - Dietary Fats, Unsaturated/*administration & dosage MH - Fatty Acids/analysis/blood MH - Female MH - Glucagon-Like Peptide 1/*blood MH - Glucose Tolerance Test MH - Humans MH - Incretins/blood MH - Insulin/blood MH - *Insulin Resistance MH - Lipids/*blood MH - Male MH - Middle Aged MH - Obesity/metabolism MH - Postprandial Period MH - Prospective Studies EDAT- 2007/10/05 09:00 MHDA- 2007/12/07 09:00 CRDT- 2007/10/05 09:00 PHST- 2007/10/05 09:00 [pubmed] PHST- 2007/12/07 09:00 [medline] PHST- 2007/10/05 09:00 [entrez] AID - 26/5/434 [pii] AID - 10.1080/07315724.2007.10719633 [doi] PST - ppublish SO - J Am Coll Nutr. 2007 Oct;26(5):434-44. doi: 10.1080/07315724.2007.10719633.