Metabolic Syndrome
Conditions
Keywords
bioactive, enriched foods, anthocyanins (AC), beta-glucans (BG), docosahexaenoic acid (DHA)
Brief summary
This is a multi-centre, randomised, double-blind, placebo-controlled, parallel-arm dietary intervention study. In total, 800 men and women at risk for Metabolic Syndrome (MS) will be recruited. Subjects will be eligible to the study if they present with two to four of the MS diagnostic criteria, at least one of them being: * fasting triglycerides ≥150 mg/dL but ≤400 mg/dL OR * HDL-cholesterol ≤50 mg/mL in women, ≤ 40mg/mL in men (with fasting triglycerides ≥110 mg/dL). Each of the four recruiting centres will recruit 200 volunteers. Participants will be randomly assigned to one of four groups to receive either: * Dairy BEF + egg placebo + bakery placebo * Egg BEF + dairy placebo + bakery placebo * Bakery BEF + dairy placebo + egg placebo * Dairy, egg and bakery placebo Participants will be required to consume all three of the allocated products each day for 12 weeks. Eligible volunteers will be included and randomly allocated to one of the four groups. At baseline, 6 weeks and 12 weeks after inclusion, each participant will visit the recruiting centre for clinical and biochemical investigations. At 3 weeks and 9 weeks participants will complete questionnaires relating to their satisfaction with the food products, compliance to consumption of the study food products, and any gastrointestinal side effects or health-related adverse events that have occurred in the previous 3 weeks. At each recruiting centre 40 participants will be required to take part in additional activities, these are: stool sample collection, adipose tissue aspiration, body composition analysis by dual energy x-ray absorptiometry (DEXA) and assessment of physical activity.
Interventions
DIETARY_SUPPLEMENTDairy BEF
Dairy BEF: Milkshake powder enriched with 250 mg of DHA and 3g beta-glucans
DIETARY_SUPPLEMENTEgg BEF
Egg BEF: Frozen pancakes enriched with 250 mg of DHA and 320 mg of anthocyanins
DIETARY_SUPPLEMENTBakery BEF
Bakery BEF: Biscuits enriched with 250 mg of DHA and 320 mg of anthocyanins
DIETARY_SUPPLEMENTBakery placebo
Bakery placebo: Biscuits without enrichment
DIETARY_SUPPLEMENTDairy placebo
Dairy placebo: Milkshake powder without enrichment
DIETARY_SUPPLEMENTEgg placebo
Egg placebo: Frozen pancakes without enrichment
Sponsors
Max Rubner-Institut
University of Leeds
Centre de Recherche en Nutrition Humaine d'Auvergne
University of Bologna
IRCCS Azienda Ospedaliero-Universitaria di Bologna
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Investigator)
Eligibility
Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
Yes
Inclusion criteria
* subjects presenting with two to four diagnostic criteria for metabolic syndrome, at least one of them being elevated fasting triglycerides OR HDL-cholesterol ≤50 mg/mL in women, ≤ 40mg/mL in men (with fasting triglycerides ≥110 mg/dL).
Exclusion criteria
* subjects with five clinical criteria for metabolic syndrome * Regular drug therapy with impact on serum lipids; * Diabetes (fasting glucose \> 1.26 g/L, or anti-diabetic treatment); * Celiac disease, lactose intolerance, allergy to milk or egg proteins; * Antibiotic treatment within the last 3 months; * Recent history of cancer or cancer treatment (less than 2 years); * Active or recently diagnosed intestinal malabsorption; * Diagnosis of organ failure * Familial dyslipidemia (TG ≥ 4.5 mmol/l or 400 mg/dl); * Illegal drug use or chronic alcoholism or smoking; * Intensive physical exercise (≥ 5 hour/week); * Consumption of nutritional supplements containing DHA, BG or AC; * History of allergy or intolerance to any components used in BEF; * Women who are pregnant or lactating;
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Triglycerides blood levels (mg/dl) | Baseline and 12 weeks | Change from baseline in triglycerides blood levels after 12 weeks of consumption of foods enriched with DHA, alone or in combination with AC or BG, in subjects at risk for or affected by MS. |
| HDL-cholesterol blood levels (mg/dl) | Baseline and 12 weeks | Change from baseline in HDL-cholesterol blood levels after 12 weeks of consumption of foods |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Waist circumference (cm). | Baseline and 12 weeks | Change from baseline in waist circumference after 12 weeks of consumption of foods enriched with DHA, alone or in combination with AC or BG, in subjects at risk for or affected by MS. |
| Urinary food metabolite levels (parts per millions). | Baseline and 12 weeks | Changes from baseline in urinary food metabolite levels, after 12 weeks of consumption of foods enriched with DHA, alone or in combination with AC or BG, in subjects at risk for or affected by MS. |
| Fecal microbiota composition (analysis of principal coordinates - PCOA) | Baseline and 12 weeks | Changes in fecal bacterial composition and diversity will be determined at baseline and after 12 weeks of consumption of foods enriched with DHA, alone or in combination with AC or BG, in subjects at risk for or affected by MS. The predominant microbial community and specific functional groups will be characterized by next-generation sequencing (NGS) of the 16S rDNA gene. The interindividual differences in the composition of the intestinal microbiota (beta-diversity) will be evaluated with the analysis of principal coordinates (PCOA). Appropriate statistical analysis will be performed to evaluate significant differences in the relative abundance of the microbial groups of intestinal microbiota between different groups of subjects. |
| Fecal Short Chain Fatty Acids (parts per million). | Baseline and 12 weeks | Change from baseline in production/uptake in the stool of Short Chain Fatty Acids, after 12 weeks of consumption of foods enriched with DHA, alone or in combination with AC or BG, in subjects at risk for or affected by MS. |
| Blood glucose (mg/dl). | Baseline and 12 weeks | Change from baseline in blood glucose levels after 12 weeks of consumption of foods enriched with DHA, alone or in combination with AC or BG, in subjects at risk for or affected by MS. |
| Serum Hemoglobin A1c (HbA1c) levels (%) | Baseline and 12 weeks | Change from baseline in HbA1c levels, after 12 weeks of consumption of foods enriched with DHA, alone or in combination with AC or BG, in subjects at risk for or affected by MS. |
| Homeostasis Model Assessment (HOMA) Index levels. | Baseline and 12 weeks | Change from baseline in Homeostasis Model Assessment Index levels, after 12 weeks of consumption of foods enriched with DHA, alone or in combination with AC or BG, in subjects at risk for or affected by MS. |
| Fecal metabolite levels (parts per millions). | Baseline and 12 weeks | Change from baseline in food metabolite levels in the stools after 12 weeks of consumption of foods enriched with DHA, alone or in combination with AC or BG, in subjects at risk for or affected by MS. |
| Dna methylation levels (%). | Baseline and 12 weeks | To test whether lymphocytes may be useful as a surrogate for adipose tissue to detect changes in DNA methylation and gene expression, genome-wide methylation differences will be performed in parallel in lymphocytes and fat cells from baseline and after 12 weeks of consumption of foods enriched with DHA, alone or in combination with AC or BG, in subjects at risk for or affected by MS. Expression of affected genes will be evaluated by qRT-PCR. |
| Blood pressure (mmHg) | Baseline and 12 weeks | Change from baseline in blood pressure after 12 weeks of consumption of foods enriched with DHA, alone or in combination with AC or BG, in subjects at risk for or affected by MS. |
Countries
France, Germany, Italy, United Kingdom
Outcome results
None listed