Cardiovascular Diseases
Conditions
Keywords
flavanols, cardiovascular effects, nutrition-nutrition interaction
Brief summary
Epidemiological studies suggest that certain foods rich in flavanols, including cocoa products, red wine, and tea, are associated with decreased cardiovascular mortality and morbidity. Dietary interventional studies have corroborated this finding and showed that flavanols can acutely and after sustained ingestion improve surrogate markers of cardiovascular risk including endothelial function. Endothelial dysfunction is the key event in the development and progression of cardiovascular disease. Aging is the major non-modifiable cardiovascular risk factor associated with progressive decline in endothelial function, vascular stiffening and increase in blood pressure. However, in addition to flavanols, other potentially bioactive compounds are present in cocoa, in particular methylxanthines. Little is known about the vascular effects of cocoa methylxanthines, i.e. mainly theobromine, in particular when consumed together with flavanols in cocoa products. The aim of the study is to characterize the nutrient-nutrient interaction between cocoa flavanols and cocoa methylxanthines.
Interventions
Sponsors
Study design
Eligibility
Inclusion criteria
* healthy male subjects * \>18 years
Exclusion criteria
* acute inflammation * cardiac arrhythmia * renal failure * heart failure (NYHA II-IV) * diabetes mellitus * CRP \> 1 mg/dl * malignant disease
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Endothelial function | 2 hours | Flow mediated dilatation (FMD) |
| Plasma flavanol metabolites | 2 hours | Measured by HPLC |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Pulse wave velocity | 2 hours | Measured by SphygmoCor |
| Ambulatory blood pressure | 2 hours | automatical measurements |
| Circulation angiogenetic cells | 2 hours | — |
Countries
Germany