Title
Bioactivity of Olive Oils Enriched With Their Own Phenolic Compounds (VOHF1)
Bioavailability and Bioactivity of Olive Oils Enriched With Their Own Phenolic Compounds in a Dose-response Study (VOHF1)
Phase
Phase 1/Phase 2Lead Sponsor
Rovira i Virgili UniversityStudy Type
InterventionalStatus
Unknown statusIndication/Condition
Polyphenol Absorption in Healthy PeopleIntervention/Treatment
olive oilStudy Participants
12Hypothesis: A functional olive oil tailored to provide the best relationship between phenolic compounds (amount and type) phenolic bioavailability and bioactivity (antioxidant and anti-endothelial dysfunction) will be a useful tool for increasing not only circulating HDL cholesterol concentration, but also the functionality (antioxidant, anti-inflammatory, and reverse cholesterol transport capacity) of human HDL in vivo.
The first step is to determine, in healthy human subjects in postprandial condition, the best relationship between phenolic compounds (amount and type) / bioavailability and bioactivity (antioxidant, anti-inflammatory and anti-endothelial dysfunction) using olive oils enriched with its own broad-spectrum phenolic compounds.
Each volunteer will be given, in random order, a single dose of 30 ml on a base of 80 g bread, of the following functional olive oils (FOO): FOO750 ppm, FOO500 ppm, which are enriched with two different amounts of broad-spectrum phenolic compounds from the virgin FOO250 ppm; all prepared at the Universitat de Lleida. Post-ingestion the volunteers will rest for 8h in a comfortable warm room. During the run-in period of 2 weeks prior the first postprandial study and 1 week between each FOO treatment period, all subjects will undergo a 2-day pre-treatment wash-out period of a phenol-free diet (saturated fatty acids in the diet will be 10-13% of energy in an isocaloric diet). Volunteers will avoid non-essential physical activity during the 3 days prior to the treatment day.
Inclusion Criteria: healthy volunteers aged 20 to 70 years Exclusion Criteria: LDL cholesterol levels above 189 mg/dL Triglycerides ≥350 mg/dL (the upper limit for correctly determining LDL-c by the Friedewald formula) Physical examination and routine biochemical laboratory determinations will be carried out to exclude co-morbidities Intake of antioxidant supplement or acetylsalicylic acid or any other drug with known antioxidative properties Chronic alcoholism Body mass index (BMI)≥30 kg/m2 Statin treatment prior to initiating the trial; stopped at least 2 months before starting the study Antihypertensive treatment prior to initiating the trial; stopped at least 2 months before starting the study Diabetes mellitus (fasting blood glucose > 126 mg/dL; measurements repeated for confirmation) Renal disease (plasma creatinine levels > 1.4 mg/dL for women and > 1.5 mg/dL for men Acute infectious diseases, malignancies, severe liver insufficiency, chronic respiratory insufficiency or associated endocrine diseases Other conditions with special nutritional requirements Having participated in a clinical trial in the last 3 months, or currently participating in a clinical trial Inability to continue in the study History of gastrointestinal disease that can impair the absorption of nutrients Depression syndrome or self-injuring ideation High plasma C-reactive protein and ESR concentrations Immunization in the last 2 months Anemia