NCT04876261

Brief Summary

The aim of this cross-over study is to assess the bioavailability of hydroxytyrosol in healthy males after the intake of two olive watery extract supplements and one olive oil. Blood and urine samples will be collected before and after intake of the investigational products. Sample will be analysed regarding the level of hydroxytyrosol and preventing lipid peroxidation.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
13

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started May 2021

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

May 3, 2021

Completed
3 days until next milestone

First Posted

Study publicly available on registry

May 6, 2021

Completed
4 days until next milestone

Study Start

First participant enrolled

May 10, 2021

Completed
2 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 2, 2021

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

July 2, 2021

Completed
Last Updated

July 14, 2021

Status Verified

July 1, 2021

Enrollment Period

2 months

First QC Date

May 3, 2021

Last Update Submit

July 13, 2021

Conditions

Keywords

Olives

Outcome Measures

Primary Outcomes (2)

  • Bioavailability of hydroxytyrosol in urine

    The primary objective is the bioavailability of hydroxytyrosol and its derivatives from both food supplements (OliPhenolia® bitter and OliPhenolia®) in urine when compared to extra virgin olive oil.

    -2 hrs to IP intake, 0 to 30 min, 30 to 60 min, 60 to 90 min, 90 to 120 min, 120 to 240 min and +4h to +12h

  • Bioavailability of hydroxytyrosol in blood

    The primary objective is the bioavailability of hydroxytyrosol and its derivatives from both food supplements (OliPhenolia® bitter and OliPhenolia®) in urine when compared to extra virgin olive oil.

    5 min. before IP intake, 30, 60, 90, 120, 240 min and 12 h

Secondary Outcomes (2)

  • Oxidative damages to lipids in blood

    5 min. before IP intake, 30, 60, 90, 120, 240 min and 12 h

  • changes in F2alpha-isoprostanes in urine

    -2 hrs to IP intake, 0 to 30 min, 30 to 60 min, 60 to 90 min, 90 to 120 min, 120 to 240 min and +4h to +12h

Study Arms (3)

Group A

ACTIVE COMPARATOR

Group A will receive Oliphenolia® bitter on intervention visit 1 followed by Oliphenolia® on intervention visit 2 and followed by La Vialla Extra Virgin Olive Oil with 5 mg hydroxytyrosol on the third and final intervention visit

Dietary Supplement: Oliphenolia® bitterDietary Supplement: Oliphenolia®Dietary Supplement: La Vialla Extra Virgin Olive Oil containing 5 mg hydroxytyrosol

Group B

ACTIVE COMPARATOR

Group B will receive Oliphenolia® on intervention visit 1 followed by La Vialla Extra Virgin Olive Oil with 5 mg hydroxytyrosol on intervention visit 2 and followed by Oliphenolia® bitter on the third and final intervention visit

Dietary Supplement: Oliphenolia® bitterDietary Supplement: Oliphenolia®Dietary Supplement: La Vialla Extra Virgin Olive Oil containing 5 mg hydroxytyrosol

Group C

ACTIVE COMPARATOR

Group C will receive La Vialla Extra Virgin Olive Oil with 5 mg hydroxytyrosol on intervention visit 1 followed by Oliphenolia® bitter on intervention visit 2 and followed by Oliphenolia® on the third and final intervention visit

Dietary Supplement: Oliphenolia® bitterDietary Supplement: Oliphenolia®Dietary Supplement: La Vialla Extra Virgin Olive Oil containing 5 mg hydroxytyrosol

Interventions

Oliphenolia® bitterDIETARY_SUPPLEMENT

* ingredients: concentrated watery extract of olives 94%, lemon juice 6% * 35 mg hydroxytyrosol, 0,24 mg Oleuropein

Group AGroup BGroup C
Oliphenolia®DIETARY_SUPPLEMENT

* ingredients: grape juice concentrate 70%, concentrated watery extract of olives 30% * 38 mg hydroxytyrosol, 0,28 mg Oleuropein

Group AGroup BGroup C

* extra virgin olive oil * 5 mg hydroxytyrosol

Group AGroup BGroup C

Eligibility Criteria

Age21 Years - 50 Years
Sexmale
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Self-reported healthy men aged 21-50,
  • subject has an adequate understanding of the study and signs the informed consent to participate in the study,
  • willingness to follow dietary and physical activity restrictions during study participation,
  • body mass index range: \>18.5 and \<29.9 kg/m2.

You may not qualify if:

  • Any known allergies to IPs (olives and their derivates),
  • any acute and chronic diseases (e.g. diagnosis of diabetes mellitus, hypertension, dyslipidemia or other cardiometabolic disorders, diagnosed hepatic, renal, or cardiovascular disease),
  • any kind of eating disorders,
  • not fluent in German,
  • any previous (last 14 days prior to screening) and any ongoing pharmacological therapy (e.g. any medication, vaccination, infusion),
  • any intake of nutritional supplements,
  • any known addiction to drugs and/or alcohol,
  • smoker,
  • Investigator or physician doubts truthfulness of self-reported health information.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

daacro GmbH & Co. KG

Trier, Rhineland-Palatinate, 54296, Germany

Location

Related Publications (12)

  • D'Angelo S, Manna C, Migliardi V, Mazzoni O, Morrica P, Capasso G, Pontoni G, Galletti P, Zappia V. Pharmacokinetics and metabolism of hydroxytyrosol, a natural antioxidant from olive oil. Drug Metab Dispos. 2001 Nov;29(11):1492-8.

    PMID: 11602527BACKGROUND
  • Caruso D, Visioli F, Patelli R, Galli C, Galli G. Urinary excretion of olive oil phenols and their metabolites in humans. Metabolism. 2001 Dec;50(12):1426-8. doi: 10.1053/meta.2001.28073.

    PMID: 11735087BACKGROUND
  • Covas MI, Nyyssonen K, Poulsen HE, Kaikkonen J, Zunft HJ, Kiesewetter H, Gaddi A, de la Torre R, Mursu J, Baumler H, Nascetti S, Salonen JT, Fito M, Virtanen J, Marrugat J; EUROLIVE Study Group. The effect of polyphenols in olive oil on heart disease risk factors: a randomized trial. Ann Intern Med. 2006 Sep 5;145(5):333-41. doi: 10.7326/0003-4819-145-5-200609050-00006.

    PMID: 16954359BACKGROUND
  • Covas MI, de la Torre R, Fito M. Virgin olive oil: a key food for cardiovascular risk protection. Br J Nutr. 2015 Apr;113 Suppl 2:S19-28. doi: 10.1017/S0007114515000136.

    PMID: 26148918BACKGROUND
  • de Bock M, Thorstensen EB, Derraik JG, Henderson HV, Hofman PL, Cutfield WS. Human absorption and metabolism of oleuropein and hydroxytyrosol ingested as olive (Olea europaea L.) leaf extract. Mol Nutr Food Res. 2013 Nov;57(11):2079-85. doi: 10.1002/mnfr.201200795. Epub 2013 Jun 14.

    PMID: 23766098BACKGROUND
  • Hohmann CD, Cramer H, Michalsen A, Kessler C, Steckhan N, Choi K, Dobos G. Effects of high phenolic olive oil on cardiovascular risk factors: A systematic review and meta-analysis. Phytomedicine. 2015 Jun 1;22(6):631-40. doi: 10.1016/j.phymed.2015.03.019. Epub 2015 Apr 20.

    PMID: 26055128BACKGROUND
  • Karkovic Markovic A, Toric J, Barbaric M, Jakobusic Brala C. Hydroxytyrosol, Tyrosol and Derivatives and Their Potential Effects on Human Health. Molecules. 2019 May 24;24(10):2001. doi: 10.3390/molecules24102001.

    PMID: 31137753BACKGROUND
  • Mateos R, Martinez-Lopez S, Baeza Arevalo G, Amigo-Benavent M, Sarria B, Bravo-Clemente L. Hydroxytyrosol in functional hydroxytyrosol-enriched biscuits is highly bioavailable and decreases oxidised low density lipoprotein levels in humans. Food Chem. 2016 Aug 15;205:248-56. doi: 10.1016/j.foodchem.2016.03.011. Epub 2016 Mar 4.

    PMID: 27006237BACKGROUND
  • Miro-Casas E, Covas MI, Fito M, Farre-Albadalejo M, Marrugat J, de la Torre R. Tyrosol and hydroxytyrosol are absorbed from moderate and sustained doses of virgin olive oil in humans. Eur J Clin Nutr. 2003 Jan;57(1):186-90. doi: 10.1038/sj.ejcn.1601532.

    PMID: 12548315BACKGROUND
  • Suarez M, Valls RM, Romero MP, Macia A, Fernandez S, Giralt M, Sola R, Motilva MJ. Bioavailability of phenols from a phenol-enriched olive oil. Br J Nutr. 2011 Dec;106(11):1691-701. doi: 10.1017/S0007114511002200. Epub 2011 Jun 21.

    PMID: 21736768BACKGROUND
  • Visioli F, Galli C, Bornet F, Mattei A, Patelli R, Galli G, Caruso D. Olive oil phenolics are dose-dependently absorbed in humans. FEBS Lett. 2000 Feb 25;468(2-3):159-60. doi: 10.1016/s0014-5793(00)01216-3.

    PMID: 10692578BACKGROUND
  • Visioli F, Galli C, Grande S, Colonnelli K, Patelli C, Galli G, Caruso D. Hydroxytyrosol excretion differs between rats and humans and depends on the vehicle of administration. J Nutr. 2003 Aug;133(8):2612-5. doi: 10.1093/jn/133.8.2612.

    PMID: 12888646BACKGROUND

MeSH Terms

Interventions

3,4-dihydroxyphenylethanol

Study Officials

  • Juliane Hellhammer, PhD

    Daacro

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, OUTCOMES ASSESSOR
Masking Details
Participants and the laboratory will be blinded. Laboratory staff will be unblinded after samples are being analysed. Participants will be unblinded after study end.
Purpose
BASIC SCIENCE
Intervention Model
CROSSOVER
Model Details: Three-armed study with a cross-over design. Participants will be randomly assigned to either group A, B or C. The group allocation will define the sequence of product intake: * Group A: first OliPhenolia® bitter, second OliPhenolia®, third La Vialla Extra Virgin Olive Oil * Group B: first OliPhenolia®, second La Vialla Extra Virgin Olive Oil, third OliPhenolia® bitter * Group C: first La Vialla Extra Virgin Olive Oil, second OliPhenolia® bitter, third OliPhenolia®
Sponsor Type
NETWORK
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 3, 2021

First Posted

May 6, 2021

Study Start

May 10, 2021

Primary Completion

July 2, 2021

Study Completion

July 2, 2021

Last Updated

July 14, 2021

Record last verified: 2021-07

Data Sharing

IPD Sharing
Will not share

Locations