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HealthyNCT05931237

Cranberry Flavan-3-ols Consumption and Gut Microbiota in Healthy Adults

A study testing Cranberry extract capsules in people with Healthy, run by Laval University at 1 site in Canada.

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

Consumption of (poly)phenols is recognized to have beneficial effects on health. However, heterogeneous results are obtained in clinical trials due to high inter-individual variability. Read more about this study

Who is it for?
Any ageHealthy volunteers can take part
Conditions the study is for
Healthy
What is being tested?
Cranberry extract capsules
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
39 participants
Where
1 siteCanada
Study dates
9 Sep 2021to 19 Nov 2021
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 Any age
  • All sexes
  • Healthy volunteers accepted
  • Child, Adult, Older adult

Who may be able to join

  • Stable weight
  • Stable or no medication
  • Stable diet
  • Stable physical activity

Who cannot join

  • Pregnant women
  • Antibiotic and/or probiotic use three months prior to the study
  • Smokers

Trial locations and contacts

1 site in 1 country.

Canada1 site
  • Laval University

    Québec, G1V 0A6

Other trials in Canada

About this study

Official title: Evaluation of the Inter-individual Variability Associated With the Interaction Between Flavan-3-ols From Cranberry and Gut Microbiota - an Exploratory Study

Consumption of (poly)phenols is recognized to have beneficial effects on health. However, heterogeneous results are obtained in clinical trials due to high inter-individual variability. The objective of this pilot study is to characterize the inter-individual variability associated with the interaction of (poly)phenols from cranberry and gut microbiota.

The participants (n=39) of this study are healthy adults aged between 23 and 63 years old and consumed cranberry extract rich in (poly)phenols for 4 days. Plasma, urine and feces were collected to quantify gut microbial (poly)phenols metabolites and to profile the fecal microbiota.

Conditions
Healthy
Being tested
Cranberry extract capsules

What participants receive

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

  • Cranberry extract capsulesDietary supplement

    Also called Prebiocran cranberry extract

    Cranberry extract capsules (Prebiocran(TM))

Study groups in NCT05931237
Study groupRoleWhat they receive
Cranberry extract capsules (PREBIOCRAN(TM))ExperimentalCranberry extract capsules consumed twice a day providing 82.3 mg of flavan-3-ols daily.
Receives: Dietary Supplement: Cranberry extract capsules

What is being measured

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

  1. Targeted metabolomic assessment (UPLC-QToF-MS) of the change in gut microbial flavan-3-ols metabolites concentration in 24h urine before and after supplementation of a cranberry extract.

    Determine the change in concentration of flavan-3-ols metabolites generated by the gut microbial metabolism before and after the consumption of 82.3 mg/day of cranberry extract in 24h urine samples (µmol/24h). The following microbial metabolites of flavan-3-ols will be determined by UPLC-QToF-MS: 5-(3´-hydroxyphenyl)-γ-valerolactone (3-HPVL), 5-(3´,4´-dihydroxyphenyl)-γ-valerolactone (3,4-DHPVL), 5-(3´-hydroxyphenyl)valeric acid (3-HPVA),and 5-(3´,4´-dihydroxyphenyl)valeric acid (3,4-DHPVA), 1-(3',4'-Dihydroxyphenyl)-3-(2",4",6"-trihydroxyphenyl)-propan-2-ol (3,4-DHPP-2-ol), 1-(3'-Hydroxyphenyl)-3-(2",4",6"-trihydroxyphenyl)-propan-2-ol (3-HPP-2-ol), 3-(3',4'-Dihydroxyphenyl)propanoic acid (3,4-DHPPA), and 3-(3'-Hydroxyphenyl)propanoic acid (3-HPPA).

    Measured: Change from Baseline concentration in flavan-3-ols gut metabolites at 4 days

  2. Targeted metabolomic assessment (UPLC-QToF-MS) of the change in gut microbial flavan-3-ols metabolites concentration in plasma before and after supplementation of a cranberry extract.

    Determine the change in concentration of flavan-3-ols metabolites generated by the gut microbial metabolism before and after the consumption of 82.3 mg/day of cranberry extract in plasma samples (nmol/L). The following microbial metabolites of flavan-3-ols will be determined by UPLC-QToF-MS: 5-(3´-hydroxyphenyl)-γ-valerolactone (3-HPVL), 5-(3´,4´-dihydroxyphenyl)-γ-valerolactone (3,4-DHPVL), 5-(3´-hydroxyphenyl)valeric acid (3-HPVA),and 5-(3´,4´-dihydroxyphenyl)valeric acid (3,4-DHPVA), 1-(3',4'-Dihydroxyphenyl)-3-(2",4",6"-trihydroxyphenyl)-propan-2-ol (3,4-DHPP-2-ol), 1-(3'-Hydroxyphenyl)-3-(2",4",6"-trihydroxyphenyl)-propan-2-ol (3-HPP-2-ol), 3-(3',4'-Dihydroxyphenyl)propanoic acid (3,4-DHPPA), and 3-(3'-Hydroxyphenyl)propanoic acid (3-HPPA).

    Measured: Change from Baseline concentration in flavan-3-ols gut metabolites at 4 days

  3. Targeted metabolomic assessment (UPLC-QToF-MS) of the change in gut microbial flavan-3-ols metabolites concentration in fecal samples before and after supplementation of a cranberry extract.

    Determine the change in concentration of flavan-3-ols metabolites generated by the gut microbial metabolism before and after the consumption of 82.3 mg/day of cranberry extract in fecal samples (nmol/g). The following microbial metabolites of flavan-3-ols will be determined by UPLC-QToF-MS: 5-(3´-hydroxyphenyl)-γ-valerolactone (3-HPVL), 5-(3´,4´-dihydroxyphenyl)-γ-valerolactone (3,4-DHPVL), 5-(3´-hydroxyphenyl)valeric acid (3-HPVA),and 5-(3´,4´-dihydroxyphenyl)valeric acid (3,4-DHPVA), 1-(3',4'-Dihydroxyphenyl)-3-(2",4",6"-trihydroxyphenyl)-propan-2-ol (3,4-DHPP-2-ol), 1-(3'-Hydroxyphenyl)-3-(2",4",6"-trihydroxyphenyl)-propan-2-ol (3-HPP-2-ol), 3-(3',4'-Dihydroxyphenyl)propanoic acid (3,4-DHPPA), and 3-(3'-Hydroxyphenyl)propanoic acid (3-HPPA).

    Measured: Change from Baseline concentration in flavan-3-ols gut metabolites at 4 days

Secondary outcomes (6)
  1. Change in the gut microbiota composition before and after supplementation of a cranberry extract.

    Determine the effect of a 4-day supplementation of cranberry extract on the composition of the gut microbiota through 16S ribosomal ribonucleic acid (rRNA) sequencing. Evaluate the changes in composition of the major microbial families and genus of participants' fecal samples. Changes in microbiota functional profile will be assessed by comparing over and under-expressed Amplicon Sequence Variants (ASV) against the SILVA databased based on the Kyoto Encyclopedia of Genes and Genomes (KEGG) Ontology (KO) functional and pathway profiles.

    Measured: Change from Baseline microbial composition at 4 days

  2. Targeted metabolomic assessment (UPLC-QToF-MS) of the change in short-chain fatty acids (SCFA) concentration in 24h urine before and after supplementation of a cranberry extract.

    Determine the effect of a 4-day cranberry extract supplementation on the changes in concentration (nmol/24h) in SCFA (acetate, propionate, butyrate, valerate), in 24h urine samples (UPLC-QToF-MS).

    Measured: Change from Baseline SCFA at 4 days

  3. Targeted metabolomic assessment (UPLC-QToF-MS) of the change in bile acids concentration in plasma before and after supplementation of a cranberry extract.

    Determine the effect of a 4-day cranberry extract supplementation on the changes in bile acids (cholic acid, chenodeoxycholic acid, ursodeoxycholic acid, lithocholic) concentration in plasma samples (nmol/L) (UPLC-QToF-MS).

    Measured: Change from Baseline bile acids at 4 days

  4. Targeted metabolomic assessment (UPLC-QToF-MS) of the change in tryptophan metabolites concentration in fecal samples before and after supplementation of a cranberry extract.

    Determine the effect of a 4-day cranberry extract supplementation on the changes in tryptophan metabolites (serotonin, kynurenine, tryptamine, quinolinic acid) concentration in fecal samples (nmol/g) (UPLC-QToF-MS).

    Measured: Change from Baseline tryptophan metabolites at 4 days

  5. Targeted metabolomic assessment (UPLC-QToF-MS) of the change in short-chain fatty acids (SCFA) concentration in the plasma before and after supplementation of a cranberry extract.

    Determine the effect of a 4-day cranberry extract supplementation on the changes in concentration (nmol/24h) in SCFA (acetate, propionate, butyrate, valerate), in plasma samples (nmol/L)(UPLC-QToF-MS).

    Measured: Change from Baseline SCFA at 4 days

  6. Determine the effect of a 4-day cranberry extract supplementation on the changes in bile acid concentration in fecal samples (UPLC-QToF-MS).

    Determine the effect of a 4-day cranberry extract supplementation on the changes in bile acids (cholic acid, chenodeoxycholic acid, ursodeoxycholic acid, lithocholic) concentration in fecal samples (nmol/g) (UPLC-QToF-MS).

    Measured: Change from Baseline bile acids at 4 days

Timeline

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

  1. First posted5 Jul 2023
  2. Study start9 Sep 2021
  3. Primary completion19 Nov 2021
  4. Study completion19 Nov 2021

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
Basic science
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
39 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05931237
Sponsor's protocol ID
Metacann
Status last verified
Jun 2023
First submitted
7 Jun 2023
Last updated
5 Jul 2023
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Lessard-Lord J, Roussel C, Guay V, Desjardins Y. Assessing the Gut Microbiota's Ability to Metabolize Oligomeric and Polymeric Flavan-3-ols from Aronia and Cranberry. Mol Nutr Food Res. 2024 Mar;68(5):e2300641. doi: 10.1002/mnfr.202300641. Epub 2024 Feb 13.

    PubMed 38350729

Questions about this trial

What is this clinical trial studying?

A study testing Cranberry extract capsules in people with Healthy, run by Laval University at 1 site in Canada.

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 4 inclusion and 3 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 5 Jul 2023. 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 Canada. 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. 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?

Targeted metabolomic assessment (UPLC-QToF-MS) of the change in gut microbial flavan-3-ols metabolites concentration in 24h urine before and after supplementation of a cranberry extract. (time frame: Change from Baseline concentration in flavan-3-ols gut metabolites at 4 days). The study lists 3 primary outcomes in all. 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 NCT05931237, 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 5 Jul 2023.

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