- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT02228291
The Effect of Citric Flavonoid on Endothelial Function
The Effect of Citric Flavonoid Administration on Endothelial Function and Gut Barrier Function
This randomized, double-blind, placebo-controlled, parallel study aims to determine the 6-week and acute effects of daily administration of a citrus flavonoid on cardiovascular and intestinal health as assessed by investigation of endothelial function, blood pressure and heart rate, glucose/insulin metabolism, lipid profile and gut barrier function in overweigh subjects.
Futhermore we aim to relate the specific intestinal (microbial) metabolism with final serum levels of specific metabolites of the study product.
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Type d'étude
Inscription (Réel)
Phase
- N'est pas applicable
Contacts et emplacements
Lieux d'étude
-
-
Limburg
-
Maastricht, Limburg, Pays-Bas, 6229HX
- Maastricht University Medical Center
-
-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria:
- Overweight men/women (BMI 25-35 kg/m2)
- Healthy individuals
- Age between 18 and 70 years
- Fasting glucose < 7.0 mmol/L
- Normal HbA1c (4.4 to 6.2%)
Exclusion Criteria:
- Type 2 diabetes mellitus (defined as fasting plasma glucose ≥ 7.0 mmol/L)
- Gastroenterological diseases or abdominal surgery
- Cardiovascular diseases, cancer, liver or kidney malfunction, thyroid disorders, disease with a life expectancy shorter than 5 years
- Self-admitted HIV-positive status
- Abuse of products; alcohol (> 20 alcoholic consumptions per week) and drugs
- Smoking
- Plans to lose weight or following a hypocaloric diet during the study period
- Weight gain or loss > 3 kg in previous 3 months
- Use of medication interfering with endpoints
- Intake of antihypertensive medication, statins, corticosteroids, NSAIDs, ciclosporin A, rifampicin are strictly forbidden
- Use of antioxidants, minerals and vitamin supplements available in pharmacies, drugstores, food markets or in alternative medicine
- Hormone replacement therapy (women)
- Use of antibiotics in the 90 days prior to the start of study
- Administration of investigational drugs or participation in any scientific intervention study which may interfere with this study (to be decided by the principle investigator) in the 180 days prior to the study
- Known pregnancy (assessed by a pregnancy test before start of study), lactation
- Blood donation within 3 months before study period
- Failure to comply prohibited intake of hesperidin containing food products during study period and prohibited intake of food products that are able to influence the FMD measurements one day prior to test days.
- History of any side effects towards the intake of flavonoids or citrus fruits
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Traitement
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Tripler
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Comparateur placebo: Placebo
Cellulose
|
|
|
Expérimental: Citric flavonoid
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Endothelial function
Délai: 6 weeks
|
The primary objective of this study is to evaluate the efficacy on endothelial function, as assessed by flow mediated dilatation (FMD) measurements, after 6 weeks of administration of study product.
|
6 weeks
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Endothelial function
Délai: 6 weeks
|
The second secondary objective of this study is to determine the 6-week effect on plasma biomarkers of endothelial dysfunction and low-grade inflammation.
|
6 weeks
|
|
Blood pressure & heart rate
Délai: 6 weeks
|
The third objective of this study is to assess the 6-week effect on blood pressure and heart rate by measuring systolic and diastolic blood pressure and heart rate.
|
6 weeks
|
|
Glucose / insulin metabolism
Délai: 6 weeks
|
The fourth secondary objective of this study is to determine the 6-week effect on glucose / insulin metabolism by blood measurements.
|
6 weeks
|
|
Lipid profile
Délai: 6 weeks
|
The fourth secondary objective of this study is to determine the 6-week effect on lipid profile by blood measurements.
|
6 weeks
|
|
Gut barrier function
Délai: 6 weeks
|
The fifth secondary objective of this study is to assess the acute and 6-week effect on gut barrier function by measuring plasma and fecal endotoxin (LPS) and zonulin.
|
6 weeks
|
|
Gut barrier function
Délai: 6 weeks
|
The sixth secondary objective of this study is to assess the 6-week effect of on gut barrier function by performing a gut sugar permeability test.
|
6 weeks
|
|
Colonic inflammation
Délai: 6 weeks
|
The seventh secondary objective of this study is to assess the 6-week effect on colonic inflammation, by measuring fecal calprotectin.
|
6 weeks
|
|
Bioavailability and metabolism
Délai: 5 days
|
The eight secondary objective of this study is to enlarge the understanding of the bioavailability and metabolism of this study product in human beings, by relating specific intestinal (microbial) metabolism with serum levels of its metabolites.
|
5 days
|
Collaborateurs et enquêteurs
Parrainer
Les enquêteurs
- Chercheur principal: A.A.M. Masclee, MD, PhD, Department of Internal Medicine, Division of Gastroenterology-Hepatology
Publications et liens utiles
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 13-3-019
Informations sur les médicaments et les dispositifs, documents d'étude
Étudie un produit pharmaceutique réglementé par la FDA américaine
Étudie un produit d'appareil réglementé par la FDA américaine
produit fabriqué et exporté des États-Unis.
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