CClinicalTrials.gg
Status unknownNCT02865278BIOPUpdated Aug 12, 2016

Bioavailability of the Polyphenols Contained in a Red Grape Extract-based Drink and Their Metabolic Effects

An interventional study of Standard meal in Healthy, sponsored by Federico II University. Status unknown. Open to participants aged 20 Years to 60 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2016-08-12.

Sponsored by Federico II University · Not applicable, Interventional, and Prevention

The sponsor has not verified this record recently (last verified Jul 2016), so the status shown — last known as Active, not recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
10
Allocation
Randomized
Ages
20 Years to 60 Years
Sex
All
01

Study summary

Randomized placebo-controlled crossover study during which participants undergo two different experimental days. The participants consume a red grape based- drink (polyphenols: 300 mg/100 ml and sugar: 9.8g/100 ml) or a placebo (no polyphenols and sugar: 9.8g/100 ml). After 3 hours they consume a test meal (905 kcal, 15% protein, 46% fat, 39% CHO). Blood samples are taken at fasting, over 3 hours after drink consumption and over 5 hours after the test meal to evaluate metabolic response. Fasting and 48h-urine are collected to evaluate bioavailability.

02

Conditions studied

  • Healthy
03

In context

Lead sponsor

Federico II University is the lead sponsor of 356 studies on the registry; 60 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • BMI >25 and \<35 kg/m2
  • Total cholesterol \<250 mg/dl
  • Triglyceride \< 200 mg/dl.
  • Fasting glucose \<100 mg/dl

Exclusion criteria

Exclusion Criteria:

  • Cardiovascular events (IMA or stroke) in the 6 months prior to the study
  • Kidney or liver failure
  • Anemia (Hb \<12 g/dl)
  • Any chronic disease
  • Intense physical activity
  • Dietary supplements
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Single (Outcomes assessor)
Enrollment
10 participants (actual)

Study arms

  • Experimental
    Polyphenol-rich drink

    The participants consume the polyphenol-rich drink. After 3 hours they consume a standard meal to evaluate whether the metabolic response may be influenced by polyphenols.

    Other: Standard meal

  • Placebo comparator
    Placebo drink

    The participants consume the control drink.After 3 hours they consume a standard meal to evaluate the metabolic response after a placebo.

    Other: Standard meal

Interventions

  • OtherStandard meal

    The participants consume the drink, experimental or placebo drink. After 3 hours they consume a standard meal (905 kcal, 15% protein, 46% fat, 39% CHO). Blood samples are taken at fasting, over 3 hours after drink consumption and over 5 hours after the test meal to evaluate metabolic response. Fasting and 48h-urine are collected to evaluate bioavailability of polyphenol.

06

What researchers measure

Primary outcomes

  1. Phenolic metabolites in urine

    GCxGC-MS

    Time frame: 48 hours

Secondary outcomes

  1. Glucose response

    Enzymatic colorimetric methods

    Time frame: 8 hours

  2. Inflammation

    Multiplex Detection Immunoassays

    Time frame: 8 hours

  3. Oxidative stress (urinary isoprostanes)

    EIA

    Time frame: 8 hours

  4. Triglyceride response

    Enzymatic colorimetric methods

    Time frame: 8 hours

07

Study locations

No study locations are listed for this record.

08

References and documents

Publications

  • Costabile G, Vitale M, Luongo D, Naviglio D, Vetrani C, Ciciola P, Tura A, Castello F, Mena P, Del Rio D, Capaldo B, Rivellese AA, Riccardi G, Giacco R. Grape pomace polyphenols improve insulin response to a standard meal in healthy individuals: A pilot study. Clin Nutr. 2019 Dec;38(6):2727-2734. doi: 10.1016/j.clnu.2018.11.028. Epub 2018 Dec 7. PubMed 30573355 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 12, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02865278
Lead sponsor
Federico II University
Responsible party
rivellese angela (Full professor, Federico II University) — Principal investigator
First posted
Aug 12, 2016
Start date
Mar 2016
Primary completion
Jul 2016
Last update
Aug 12, 2016

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Jul 2016. You cannot join it, but the record below documents what was studied.

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