- ICH GCP
- US-Register für klinische Studien
- Klinische Studie 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.
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Studientyp
Einschreibung (Tatsächlich)
Phase
- Unzutreffend
Kontakte und Standorte
Studienorte
-
-
Limburg
-
Maastricht, Limburg, Niederlande, 6229HX
- Maastricht University Medical Center
-
-
Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
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
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Verdreifachen
Waffen und Interventionen
Teilnehmergruppe / Arm |
Intervention / Behandlung |
|---|---|
|
Placebo-Komparator: Placebo
Zellulose
|
|
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Experimental: Citric flavonoid
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Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Endothelial function
Zeitfenster: 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
|
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Endothelial function
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
|
Mitarbeiter und Ermittler
Ermittler
- Hauptermittler: A.A.M. Masclee, MD, PhD, Department of Internal Medicine, Division of Gastroenterology-Hepatology
Publikationen und hilfreiche Links
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Schätzen)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Schätzen)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
- 13-3-019
Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
Produkt, das in den USA hergestellt und aus den USA exportiert wird
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