Foodprint 1.0: Physiological Acute Responses After Consumption of Confectionary Products (FP1)

Foodprint 1.0: Metabolic, Hormonal, Inflammatory and Oxidative Post-prandial Responses After Consumption of Confectionary Products

The composition of a food or a meal consumed plays an important role in the rate of postprandial endocrine and metabolic response, especially if high in fats, sugars and total energy content and a reduction in its entity is related to beneficial effects towards the prevention of several chronical diseases. The physiological postprandial response depends on several factors, both intrinsic, such as natural characteristic of food, and extrinsic, such as the way in which food is processed. This study aims at investigating postprandial hormonal, metabolic, oxidative stress, inflammation and endotoxaemia responses after the consumption of different commercial confectionary products made with different reformulation (ingredients and/or processing techniques).The principal scope of the study is to evaluate the impact of the reformulation of different snacks on postprandial responses. The investigators therefore designed a randomized controlled crossover trial, in which 15 healthy volunteers will consume different isocaloric confectionary products (snacks) and their related reformulation (total products number = 6) and a reference snack. Venous blood samples will be collected until 4-h after meal consumption. In order to evaluate postprandial hormonal, metabolic, oxidative stress, inflammation and endotoxaemia responses several markers will be evaluate: metabolic substrates: glucose; Triglycerides and NEFA; hormones: insulin; c-peptide; GLP-1, GIP, leptin, ghrelin, PYY; markers of inflammation: IL-6, IL-8, IL-10, IL-17, TNF-α, hsCRP, MCP-1; markers of oxidative stress and antioxidant capacity: GSH, FRAP; endotoxaemia: lipopolysaccharides (LPS). These results will contribute to a detailed evaluation of the effects of reformulation on physiological events after meal consumption, leading to clarify if these variations in ingredients and/or processing techniques can modify postprandial responses, making them more similar to those originated from the reference snack.

Meal consumption, especially if high in fats, sugars and total energy content, leads to a transient rise in blood glucose and lipids. The extent of glycemic and lipidemic postprandial responses have been linked to the progression of cardiovascular and other chronic degenerative diseases, such as type 2 diabetes and Alzheimer through a substantial increase in oxidative stress, systemic inflammation, and endothelial dysfunction. In addition, some studies have shown that consuming a high fat meal is associated with a postprandial increase in plasma and serum endotoxin concentrations in humans. LPS, lipopolysaccharide, is considered a major predisposing factor for inflammation-associated diseases such as atherosclerosis, sepsis and obesity. Therefore, following a correct dietary model may be beneficial in order to limit postprandial excursion and to modulate hormonal responses involved in satiety. The physiological postprandial response depends on several factors, both intrinsic, such as natural characteristic of food, and extrinsic, such as the way in which food is processed. Thus, the present study aims at evaluating if the reformulation of some commercial confectionery products can lead to an improvement of the nutritional profile, through a decrease of postprandial metabolic and hormonal, oxidative stress, inflammation and endotoxaemia responses in comparison with commercial confectionery products (snacks).

The study is a cross-over, randomized intervention trial. Each subject consumed in a randomly order seven foods test with a one-week wash out between different treatments. The portion size of each foods test was calculated in order to provide the same calories.

IAUC postprandial blood hormones (insulin, c-peptide, ghrelin, Glucagon-like peptide 1 (GLP-1), Gastric inhibitory peptide (GIP), peptide YY (PYY), leptin)

Postprandial response for blood hormones (insulin, c-peptide, ghrelin, Glucagon-like peptide 1 (GLP-1), Gastric inhibitory peptide (GIP), peptide YY (PYY), leptin)

Incremental area under the curve for blood inflammatory markers (IL-6, IL-8, IL-10, IL-17, TNF-α, hsCRP, MCP-1) postprandial response (IAUC)

incremental blood inflammatory markers (IL-6, IL-8, IL-10, IL-17, TNF-α, hsCRP, MCP-1) concentration at each timepoint of the curve

IAUC postprandial blood oxidative stress related markers glutathione (GSH) and antioxidant capacity (Ferric ion reducing antioxidant power (FRAP))

Incremental area under the curve for blood oxidative stress related markers glutathione (GSH) and antioxidant capacity (Ferric ion reducing antioxidant power (FRAP))

Postprandial response for blood oxidative stress related markers glutathione (GSH) and antioxidant capacity (Ferric ion reducing antioxidant power (FRAP))

incremental blood oxidative stress related markers glutathione (GSH) and antioxidant capacity (Ferric ion reducing antioxidant power (FRAP)) concentration at each timepoint of the curve

Differences in subject-rated satiety using a 100mm visual analog scale (centimeter) Range 0-10 centimeter. Higher are the values of satiety in each timepoints better is the product.

Palatability using a 100mm visual analog scale (centimeter). Range 0-10 centimeter. Higher is the value of palatability better is the product.

gastrointestinal symptoms using a 100mm visual analog scale (centimeter). range 0-10 centimeter. Lower are the values of gastrointestinal symptoms better is the product.

Inclusion Criteria: - Healthy male and female adult subjects Exclusion Criteria: BMI > 30 kg/m2 Metabolic disorders (diabetes, hypertension, dyslipidemia, glucidic intolerance) Chronic drug therapies for any pathologies (including psychiatric diseases) Dietary supplements affecting metabolism of glucose and lipid Celiac disease Pregnancy or lactation Lactose intolerance Food allergies

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