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Healthy MenCranberryNCT02517775

Effects of Cranberry Consumption in Vascular Function in Healthy Individuals

A study testing Cranberry 320, Cranberry 640 and Cranberry 960 in people with Healthy Men, run by Heinrich-Heine University, Duesseldorf at 1 site in Germany.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Accumulating evidence from epidemiological and human intervention studies indicates that the cardiovascular health benefits of diets rich in fruits and vegetables are (in part) related to their (poly)phenol content. Cranberries are rich in (poly)phenols compounds, in particular anthocyanins, but also phenolic acids. Read more about this study

Who is it for?
Ages 18 to 40 years, men onlyHealthy volunteers can take part
Conditions the study is for
Healthy Men
What is being tested?
Cranberry 320, Cranberry 640 and Cranberry 960
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
10 participants
Where
1 siteGermany
Study dates
Oct 2014to Sep 2015
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 40 years
  • Men only
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • healthy male subjects without clinical signs or symptoms of cardiovascular disease

Who cannot join

  • cardiovascular disease
  • acute inflammation
  • cardiac arrhythmia
  • renal failure
  • heart failure (NYHA II-IV)
  • diabetes mellitus
Show all 10Show fewer
  • C-reactive protein > 05 mg/dL
  • malignant disease
  • cranberry allergy/intolerance
  • hypotension (≤100 / 60 mm Hg)

Trial locations and contacts

1 site in 1 country.

Germany1 site
  • Division of Cardiology, Pulmonary Disease and Vascular Medicine, University Hospital Duesseldorf

    Düsseldorf, 40225

Other trials in Germany

About this study

Official title: Intake and Time-dependent Effects of Cranberry (Poly)Phenol Consumption in Vascular Function in Healthy Individuals

Accumulating evidence from epidemiological and human intervention studies indicates that the cardiovascular health benefits of diets rich in fruits and vegetables are (in part) related to their (poly)phenol content. Cranberries are rich in (poly)phenols compounds, in particular anthocyanins, but also phenolic acids. At present, a small number of randomized controlled trials investigating the effects of berry (poly)phenols on validated surrogate markers of cardiovascular disease risk has shown promising results. However, to date, very few human studies have specifically investigated the effects of cranberry (poly)phenols on cardiovascular function in healthy subjects. To our knowledge, no study has investigated the time and intake-dependent effect of cranberry consumption on vascular function in healthy subjects. This information is necessary for the planning of long-term studies aiming to assess the potential beneficial effects of cranberries, using optimal amounts at optimal time points. Therefore, this study aims to investigate the potential role of cranberry (poly)phenols in the modulation of vascular function by monitoring changes in vascular function together with the major (poly)phenol derivatives/metabolites in plasma and urine.

Conditions
Healthy Men
Being tested
Cranberry 320, Cranberry 640, Cranberry 960, Cranberry 1280, Cranberry 1600
Keywords
polyphenols, vascular function, endothelial function, cranberry, healthy

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Cranberry 320Dietary supplement

    Dietary Supplement: Cranberry beverage with 320 mg of (poly)phenols Acute intake of 500 mL (1x daily)

  • Cranberry 640Dietary supplement

    Dietary Supplement: Cranberry beverage with 640 mg of (poly)phenols Acute intake of 500 mL (1x daily)

  • Cranberry 960Dietary supplement

    Dietary Supplement: Cranberry beverage with 960 mg of (poly)phenols Acute intake of 500 mL (1x daily)

  • Cranberry 1280Dietary supplement

    Dietary Supplement: Cranberry beverage with 1280 mg of (poly)phenols Acute intake of 500 mL (1x daily)

  • Cranberry 1600Dietary supplement

    Dietary Supplement: Cranberry beverage with 1600 mg of (poly)phenols Acute intake of 500 mL (1x daily)

  • Cranberry deprived supplementDietary supplement

    Cranberry deprived supplement Acute intake of 500 mL (1x daily)

Study groups in NCT02517775
Study groupRoleWhat they receive
Cranberry 320Active comparatorDietary Supplement: Cranberry beverage with 320 mg of (poly)phenols Acute intake of 500 mL (1x daily)
Receives: Dietary Supplement: Cranberry 320
Cranberry 640Active comparatorDietary Supplement: Cranberry beverage with 640 mg of (poly)phenols Acute intake of 500 mL (1x daily)
Receives: Dietary Supplement: Cranberry 640
Cranberry 960Active comparatorDietary Supplement: Cranberry beverage with 960 mg of (poly)phenols Acute intake of 500 mL (1x daily)
Receives: Dietary Supplement: Cranberry 960
Cranberry 1280Active comparatorDietary Supplement: Cranberry beverage with 1280 mg of (poly)phenols Acute intake of 500 mL (1x daily)
Receives: Dietary Supplement: Cranberry 1280
Cranberry 1600Active comparatorDietary Supplement: Cranberry beverage with 1600 mg of (poly)phenols Acute intake of 500 mL (1x daily)
Receives: Dietary Supplement: Cranberry 1600
Cranberry deprived supplementPlacebo comparatorPlacebo comparator: Cranberry deprived supplement Acute intake of 500 mL (1x daily)
Receives: Dietary Supplement: Cranberry deprived supplement

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Endothelial function

    measured by Flow mediated dilation at 1, 2, 4, 6 and 8 hours after intake

    Measured: Baseline, on week 1, 2, 3, 4 and 5 postconsumption

Secondary outcomes (4)
  1. pulse wave velocity

    measured by SphygmoCor at 0, 1, 2, 4, 6 and 8 hours after intake

    Measured: Baseline, on week 1, 2, 3, 4 and 5 postconsumption

  2. Central blood pressure

    measured by SphygmoCor at 0, 1.5, 4, 6 and 8 hours after intake

    Measured: Baseline, on week 1, 2, 3, 4 and 5 postconsumption

  3. Peripheral blood pressure

    measured by automatic sphygmomanometer at 0, 1, 2, 4, 6 and 8 hours after intake

    Measured: Baseline, on week 1, 2, 3, 4 and 5 postconsumption

  4. Heart Rate

    measured by SphygmoCor 0, 1, 2, 4, 6 and 8 hours after intake

    Measured: Baseline, on week 1, 2, 3, 4 and 5 postconsumption

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted7 Aug 2015 (estimated)
  2. Study startOct 2014
  3. Primary completionSep 2015
  4. Study completionSep 2015

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
10 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02517775
Sponsor's protocol ID
14-012
Acronym
Cranberry
Status last verified
Nov 2015
First submitted
8 Jul 2015
Last updated
3 Nov 2015
Results posted
No
Data monitoring committee
No

Publications

  • Mena P, Favari C, Acharjee A, Chernbumroong S, Bresciani L, Curti C, Brighenti F, Heiss C, Rodriguez-Mateos A, Del Rio D. Metabotypes of flavan-3-ol colonic metabolites after cranberry intake: elucidation and statistical approaches. Eur J Nutr. 2022 Apr;61(3):1299-1317. doi: 10.1007/s00394-021-02692-z. Epub 2021 Nov 9.

    PubMed 34750642

Questions about this trial

What is this clinical trial studying?

A study testing Cranberry 320, Cranberry 640 and Cranberry 960 in people with Healthy Men, run by Heinrich-Heine University, Duesseldorf at 1 site in Germany.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 3 Nov 2015. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Germany. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Endothelial function (time frame: Baseline, on week 1, 2, 3, 4 and 5 postconsumption). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02517775, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Nov 2015.

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