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Postprandial Metabolome and Metabolic Flexibility
Sponsor: Instituto Nacional de Medicina Genomica
Summary
Metabolic flexibility is a process in which the body can switch energy substrates in different physiological states. This flexibility plays an important role in an individual's health because losing it increases the risk of obesity, metabolic syndrome, insulin resistance, and type 2 diabetes. Considering that humans spend most of their awakening hours in a postprandial (PP) state, an organism's metabolic flexibility (MF) to respond to a standardized meal's consumption would provide information on the individual's metabolic health. The PP response to glucose following an oral glucose tolerance test or consumption of a high-carbohydrate meal is well described; however, few studies assess the FM and PP metabolome using mixed meals with different macronutrients. The investigators address how metabolic flexibility and metabolome change after consuming standardized meals with different macronutrient ratios. Data collection includes clinical and diet information, indirect calorimetry, and capillary blood sampling during fasting and after consumption of standardized meals. Samples are collected weekly for one month. The data will determine the metabolic flexibility and metabolome after consuming standardized meals with different macronutrient ratios.
Official title: Standardized Meals With Different Macronutrient Ratios on the Postprandial Metabolome and Metabolic Flexibility
Key Details
Gender
All
Age Range
18 Years - 30 Years
Study Type
INTERVENTIONAL
Enrollment
300
Start Date
2024-01-08
Completion Date
2026-12-18
Last Updated
2025-03-17
Healthy Volunteers
Yes
Conditions
Interventions
High carbohydrate challenge
Capillary blood samples will be obtained in the morning after an overnight 8-hour fasting; then, an indirect fasting calorimetry will be performed. After the indirect calorimetry, the metabolic and hormonal response to the test meal is performed. The nutritional composition of the standardized meal is shown below. Energy, 479.6 kcal; Carbohydrate, 83.6%; Lipids, 12.4%, and Protein, 4.0% (70 g of hot cake, 100 g of mango, 270 ml of peach nectar, and 40 g of strawberry jam). The food challenge should be consumed within 15 minutes. After 5 minutes of rest, indirect calorimetry will be postprandially, lasting 30 minutes. Capillary blood shall be obtained at the following times: 15-30-45-60-90 and 120 min after ingestion of food.
High lipid challenge
Capillary blood samples will be obtained in the morning after an overnight 8-hour fasting; then, an indirect fasting calorimetry will be performed. After the indirect calorimetry, the metabolic and hormonal response to the test meal is performed. The nutritional composition of the standardized meal is shown below. Energy, 1043.4 kcal; Carbohydrate, 4.9%; Lipids, 86.8%, and Protein, 8.3% (60 g of manchego cheese, 25 g of egg, white, dried, 24 g of bacon, 5 ml of oil, 65 g of cream cheese, 70 g of cream, and 16 g of poblano pepper). The food challenge should be consumed within 15 minutes. After 5 minutes of rest, indirect calorimetry will be postprandially, lasting 30 minutes. Capillary blood shall be obtained at the following times: 15-30-45-60-90 and 120 min after ingestion of food.
High proteinchallenge
Capillary blood samples will be obtained in the morning after an overnight 8-hour fasting; then, an indirect fasting calorimetry will be performed. After the indirect calorimetry, the metabolic and hormonal response to the test meal is performed. The nutritional composition of the standardized meal is shown below. Energy, 441.3 kcal; Carbohydrate, 1.6%; Lipids, 5.1%, and Protein, 93.3% (2 scoop Isopure Zero Carb, 180 g of chicken breast, 20 g of lettuce and 24 g of ham turkey breast). The food challenge should be consumed within 15 minutes. After 5 minutes of rest, indirect calorimetry will be postprandially, lasting 30 minutes. Capillary blood shall be obtained at the following times: 15-30-45-60-90 and 120 min after ingestion of food.
Locations (1)
Berenice Palacios-Gonzalez
Mexico City, Mexico