ClinicalTrials.gg
CompletedNCT02975856Updated Nov 29, 2016

Bioavailability of Red Wine Anthocyanins

A Phase 1 interventional study of Table Red Wine and Young Port Red Wine in Healthy, sponsored by Universidade do Porto. Completed at 1 site in Portugal. Open to male participants aged 18 Years to 45 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2016-11-29.

Sponsored by Universidade do Porto · Phase 1, Interventional, and Basic science

Phase
Phase 1
Study type
Interventional
Enrollment
6
Ages
18 Years to 45 Years
Sex
Male
01

Study summary

The main aim of this study is to evaluate the bioavailability of table red wine and young Port red wine anthocyanins in healthy men.

Read the detailed description

Anthocyanins (ANT) are water soluble pigments found in plants, flowers and fruits that are consumed as part of the human diet, many times in higher amounts than other flavonoid classes. Red wine is also an important source of anthocyanins, especially Mv3glc.

Several epidemiological studies have suggested that the consumption of anthocyanin-rich foods, including the moderate consumption of red wine, is positively associated with the prevention of cardiovascular heart disease.

It has become clear that the flavonoid bioactive forms in vivo are not necessarily those which occur in nature, but metabolites arising after absorption takes place.Therefore, studying the bioavailability of red wine ANT is very important to identify which metabolites (originated in vivo) can actually reach the target organs (and in which concentrations) and may be responsible for the postulated health benefits of red wine.

Intervention protocol:

Urine samples and peripheral venous blood (10 ml) will be collected from 10 h-fasting subjects. Afterwards, each volunteer will consume 250 ml of table red wine or 150 ml of young Port red wine and blood samples will be collected 15, 30, 60 and 120 min after wines ingestion. Another urine sample will be collected at 120 min.

Table red wine 12 % (250 ml) and young Port red wine 20 % (150 ml), two different food matrices rich in ANT, provided the same amount of ethanol (24 g of ethanol).

A thorough screening analysis for ANT will be performed in plasma and urine samples collected from the volunteers at different time points.

02

Conditions studied

  • Healthy

Keywords

  • Anthocyanins
  • Bioavailability
  • Flavonoids
  • Port wine
  • Red wine
03

In context

Lead sponsor

Universidade do Porto is the lead sponsor of 172 studies on the registry; 53 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 45 Years
Sexes eligible
Male
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Men
  • Age 18-65 years
  • BMI \< 25 kg/m2
  • Willing and able to provide written consent

Exclusion criteria

Exclusion Criteria:

  • Subjects with current or previous CVD, diabetes or other severe chronic disease
  • Subjects under prescription of any chronic medication
  • Intake of red fruits or red wine in the last 24 h prior to the beginning of the intervention
  • Subjects involved in any clinical or food study within the preceding month
05

Study design

Phase
Phase 1
Primary purpose
Basic science
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
6 participants (actual)

Study arms

  • Experimental
    Table Red Wine

    250 ml Table Red Wine (12% ethanol)

    Dietary Supplement: Table Red Wine

  • Experimental
    Young Port Red Wine

    150 ml Young Port Red Wine (20% ethanol)

    Dietary Supplement: Young Port Red Wine

Interventions

  • Dietary supplementTable Red Wine
  • Dietary supplementYoung Port Red Wine
06

What researchers measure

Primary outcomes

  1. Plasma concentrations of anthocyanins and anthocyanins metabolites

    Time frame: At baseline and 15, 30, 60 and 120 minutes after wines consumption

Secondary outcomes

  1. Urinary concentrations of anthocyanins and anthocyanins metabolites

    Time frame: At baseline and 120 minutes after wines consumption

07

Study locations

1 site
  • CINTESIS - Faculty of Medicine of the University of Porto
    Porto, 4200-450, Portugal
08

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Dec 2015, a primary completion of Mar 2016 and a completion of Jul 2016. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 23, 2016
First posted
Nov 29, 2016
Start
Dec 2015
Primary completionActual
Mar 2016
CompletionActual
Jul 2016
Last update
Nov 29, 2016
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Nov 29, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02975856
Collaborators
REQUIMTE/LAQV, Departamento de Química e Bioquímica, FCUP, Center for Health Technology and Services Research, Vinoflavo
Responsible party
Sponsor
First posted
Nov 29, 2016
Start date
Dec 2015
Primary completion
Mar 2016
Completion
Jul 2016
Last update
Nov 29, 2016

Study contacts

Conceição Calhau, PhD
principal investigator · CINTESIS - Faculty of Medicine of University of Porto
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

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

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion