- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT03741218
Grape Polyphenols and Second-meal Effect (GRAPESECOND)
Potential Modulatory Effect of Whole Grape on Second-meal Tolerance in Obese Subjects: Role of Polyphenols
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
Twenty-five subjects with obesity will be were recruited. Detailed inclusion and exclusion criteria are provided below.
The subjects will receive, after overnight fasting, either a monodose of freeze-dried grapes (equivalent to 300 g of fresh grapes) or isocaloric placebo solved in water, together with a high-fat breakfast. Blood samples will be collected before the intake, up to 5 h after breakfast, then a medium-fat lunch will be provided and blood samples will be collected for three additional hours. Both interventions will be separated by two weeks. The following determinations will be performed in blood samples collected at different periods: glucose, insulin, triglycerides, uric acid, viscosity, antioxidant capacity. Additionally, a satiety test will be provided. It is expected that grape supplementation, as compared with an isocaloric placebo, causes significant modifications in all the parameters indicated. Nevertheless, the primary outcome of this study is the area under the curve for glucose after the second meal (300-420 min from basal time).
Type d'étude
Inscription (Réel)
Phase
- N'est pas applicable
Contacts et emplacements
Lieux d'étude
-
-
-
Madrid, Espagne, 28040
- Institute of Food Science, Technology and Nutrition, National Research Council (ICTAN-CSIC)
-
-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria:
- Obesity (BMI = 30-40 kg/m2).
Exclusion Criteria:
- Subjects with a pharmaceutical treatment set to modify blood pressure, lipid profile or glucose.
- Subjects with diagnoses of type 2 diabetes, cardiovascular diseases or thyroid diseases.
- Values above the following ones: glucose, > 115 mg/dL; triglycerides, > 350 mg/dL; total cholesterol, > 280 mg/dL; systolic blood pressure, > 150 mmHg; diastolic blood pressure, > 100 mmHg
- Previous bariatric surgery.
- Volunteers participating in other studies (currently or during last year) or weight loss plans.
- Pregnant or breastfeeding women.
- Adherence to vegetarian diets or usual consumption of dietary supplements.
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Science basique
- Répartition: Randomisé
- Modèle interventionnel: Affectation croisée
- Masquage: Double
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
---|---|
Expérimental: 1
All subjects will receive a high-fat breakfast and a medium-fat lunch twice.
They will consume together with the breakfast the placebo (PLA) the first time and grape (GRAP) the second time.
|
The subjects will receive, after overnight fasting, either a monodose of freeze-dried grapes (equivalent to 300 g of fresh grapes) or isocaloric placebo solved in water, together with a high-fat breakfast.
Blood samples will be collected before the intake, up to 5 h after breakfast, then a medium-fat lunch will be provided and blood samples will be collected for three additional hours.
A total of 10 samples will be collected: 0-30-60-120-180-240-300-330-360-420 min.
Both interventions will be separated by two weeks.
Subjects will be instructed not to modify their dietary habits during the development of the study, but during the 72 h before each visit they will have to restrict the intake of polyphenol-rich foods (a detailed list will be provided).
|
Expérimental: 2
All subjects will receive a high-fat breakfast and a medium-fat lunch twice.
They will consume together with the breakfast grape (GRAP) the first time and the placebo (PLA) the second time.
|
The subjects will receive, after overnight fasting, either a monodose of freeze-dried grapes (equivalent to 300 g of fresh grapes) or isocaloric placebo solved in water, together with a high-fat breakfast.
Blood samples will be collected before the intake, up to 5 h after breakfast, then a medium-fat lunch will be provided and blood samples will be collected for three additional hours.
A total of 10 samples will be collected: 0-30-60-120-180-240-300-330-360-420 min.
Both interventions will be separated by two weeks.
Subjects will be instructed not to modify their dietary habits during the development of the study, but during the 72 h before each visit they will have to restrict the intake of polyphenol-rich foods (a detailed list will be provided).
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
---|---|---|
Postprandial glucose (300-420 min)
Délai: Up to two months
|
Changes of postprandial blood glucose as result of supplementation with grapes, measured area under the curve for the period 300-420 min
|
Up to two months
|
Autres mesures de résultats
Mesure des résultats |
Description de la mesure |
Délai |
---|---|---|
Postprandial glucose and insulin
Délai: Up to four months
|
Changes of blood glucose (0-320 min) and insulin (0-300 and 300-420 min) as result of supplementation with grapes
|
Up to four months
|
Plasma triglycerides
Délai: Up to four months
|
Changes of plasma triglycerides (0-300 and 300-420 min) as result of supplementation with grapes
|
Up to four months
|
Plasma uric acid
Délai: Up to four months
|
Changes of plasma uric acid (0-300 and 300-420 min) as result of supplementation with grapes
|
Up to four months
|
Plasma antioxidant capacity
Délai: Up to five months
|
Changes of plasma antioxidant capacity (0-300 and 300-420 min) as result of supplementation with grapes
|
Up to five months
|
Plasma viscosity
Délai: Up to six months
|
Changes of plasma viscosity (0-300 and 300-420 min) as result of supplementation with grapes.
|
Up to six months
|
Satiety
Délai: Up to three months
|
Changes of satiety (0-300 and 300-420 min) as result of supplementation with grapes.
|
Up to three months
|
Collaborateurs et enquêteurs
Parrainer
Collaborateurs
Les enquêteurs
- Chercheur principal: Jara Pérez-Jiménez, PhD, Institute of Food Science, Technology and Nutrition (ICTAN-CSIC)
Publications et liens utiles
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
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 (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
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
- HRG_2018
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
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
Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .