Metabolism, Nutrition
Conditions
Keywords
metabolic flexibility, lipid metabolism
Brief summary
The aim of the study will be to evaluate the impact of consumption of meat and dairy products from extensive or intensive farming on apparently healthy individuals aged between 45 and 65 years, a stage of life associated with reduced metabolic flexibility and changes in lipid metabolism. The study will analyze: 1. The transcription factor PPAR-α determined by the gene expression of PPAR-α in white blood cells, variations in circulating fatty acid metabolism, and the endocannabinoid system determined by circulating analysis of N-acylethanolamine (NAE), and 2-monoacylglycerols (2-MG); 2. Metabolic flexibility, determined by indirect calorimetry in fasting condition during an incremental exercise; 3. Body composition, determined by bioimpedance analysis, waist circumference, and waist-to-hip ratio.
Detailed description
The study will be a double-blind crossover intervention clinical trial conducted on the aforementioned individuals, who will consume kent'erbas cheese products, from extensive and intensive farming. The study will include 105 individuals aged between 45 and 65 years, apparently in good health, recruited from the UTIC cardiology unit of A.O.U.CA Cagliari (Italy). All participants will be provided with a detailed explanation of the study procedures and its purpose, and their participation will be contingent upon signing an informed consent form. Throughout the study, subjects will maintain their regular lifestyle and unrestricted food intake. At the outset of the study, relevant information necessary for an appropriate approach to each participant will be collected, including a comprehensive medical history, measurement of anthropometric parameters, and blood sampling for a thorough hematological, inflammatory, and lipid-metabolomic analysis. In the pecorino study, subjects will consume 350g/week of kent'erbas pecorino from extensive farming or 350g/week of industrial pecorino from intensive farming for 4 weeks in total. At the end of this period, a blood sample will be taken. Subsequently, there will be a 8 weeks washout period during which participants will follow their usual diet without consuming either type of pecorino. At the end of the washout period, an additional blood sample will be taken. Following this, the participants who had consumed kent'erbas pecorino will switch to industrial pecorino for 4 weeks, and vice versa. At the end of this second period, a final blood sample will be collected. The quantities of pecorino cheese chosen for intake are representative of the average consumption in Italy.
Interventions
DIETARY_SUPPLEMENTkent'erbas cheese study
Nutritional intervention with kent'erbas pecorino from extensive farming with crossover and industrial pecorino from intensive farming
Sponsors
University of Cagliari
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)
Eligibility
Sex/Gender
ALL
Age
45 Years to 65 Years
Healthy volunteers
Yes
Inclusion criteria
* 45-65 years of age * BMI \< 27 * waist-to-hip ratio female\<0.85; male \< 0.98
Exclusion criteria
* metabolic diseases * Physical activity of competitive nature * Vegans and vegetarians * Intolerances and allergies to the foods under study
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Changes in plasma levels of DHA and acylethanolamides as Metabolic indices of PPAR-α induction increase in plasma levels of DHA | After 4 weeks of treatment, 8 weeks of washout and 4 weeks of crossover | Changes in plasma levels of DHA)and modulation of the endocannabinoid system, through the biosynthesis of AEA, PEA, and OEA. All these parameters will be assessed as pmoles/ml of plasma |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Quotient respiratory changes measurement as metabolic flexibility indices | After 4 weeks of treatment, 8 weeks of washout and 4 weeks of crossover | Metabolic flexibility indices, through fasting differences in the respiratory quotient, measured as Liter/min of Oxygen consumption and carbon dioxide |
Countries
Italy
Contacts
Primary ContactSebastiano Banni
Outcome results
None listed