Assessment Metabolic Flexibility by Indirect Calorimetry and Circulating Metabolic Parameters in Middle-aged Individuals: The Nutritional Impact of Cheese From Extensive and Intensive Farming.
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 105
- 试验地点
- 1
- 主要终点
- Changes in plasma levels of DHA and acylethanolamides as Metabolic indices of PPAR-α induction increase in plasma levels of DHA
研究概览
简要总结
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:
- 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);
- Metabolic flexibility, determined by indirect calorimetry in fasting condition during an incremental exercise;
- Body composition, determined by bioimpedance analysis, waist circumference, and waist-to-hip ratio.
详细描述
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.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Double (Participant, Investigator)
入排标准
- 年龄范围
- 45 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •45-65 years of age
- •BMI < 27
- •waist-to-hip ratio female<0.85; male < 0.98
排除标准
- •metabolic diseases
- •Physical activity of competitive nature
- •Vegans and vegetarians
- •Intolerances and allergies to the foods under study
研究组 & 干预措施
"kent'erbas" pecorino from extensive farming with crossover Arm 1
This study was a 4-week, randomized, controlled, crossover clinical trial. Arm 1: Volunteers will be randomize to be allocated to eat 350g/week of "kent'erbas" pecorino from extensive farming with a crossover with arm 2 after 6 weeks of washout.
干预措施: kent'erbas cheese study (Dietary Supplement)
"industrial" pecorino from intensive farming with crossover Arm 2
This study was a 4-week, randomized, controlled, crossover clinical trial. Arm 2 : Volunteers will be randomize to be allocated to eat 350g/week of "industrial" pecorino from intensive farming for 4 weeks in total, with a crossover with arm 1 after 6 weeks of washout.
干预措施: kent'erbas cheese study (Dietary Supplement)
结局指标
主要结局
Changes in plasma levels of DHA and acylethanolamides as Metabolic indices of PPAR-α induction increase in plasma levels of DHA
时间窗: 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
次要结局
- Quotient respiratory changes measurement as metabolic flexibility indices(After 4 weeks of treatment, 8 weeks of washout and 4 weeks of crossover)
研究者
Sebastiano Banni
full professor
University of Cagliari