NCT05432362

Brief Summary

The purpose of this study is to assess the effects of polyphenols from natural aronia juice on the immune system. Therefore, the study aims to distinguish the effects of natural juices that are rich in phytonutrients such as polyphenols and carotenoids in healthy and depressive subjects in order to use the known positive effects of these food sources in the therapeutic setting. The consumption of natural fruit juices that are rich in polyphenols and carotenoids mirror a model of vegetarian diet due to the increased micronutrient density derived from plant food. Results obtained here can be seen as preliminary explanation models for the beneficial effects of vegetarian diet. It is hypothesized, that the consumption of naturally polyphenol rich aronia juice changes the expression of regulatory T cells, specific cells of the immune system that contribute to immunomodulation. Furthermore, beneficial changes in the gut microbiome, the metabolome and the nutritional status are expected in the studied groups. The study was registered retrospectively (after start of recruitment) on Clinicaltrials.gov.

Trial Health

57
Monitor

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
120

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Feb 2019

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

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

Study Start

First participant enrolled

February 25, 2019

Completed
3.3 years until next milestone

First Submitted

Initial submission to the registry

June 13, 2022

Completed
14 days until next milestone

First Posted

Study publicly available on registry

June 27, 2022

Completed
3.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 31, 2026

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

January 31, 2026

Completed
Last Updated

November 27, 2024

Status Verified

November 1, 2024

Enrollment Period

6.9 years

First QC Date

June 13, 2022

Last Update Submit

November 25, 2024

Conditions

Keywords

polyphenolsAronia melanocarpaimmunomodulationplant based foodnatural food

Outcome Measures

Primary Outcomes (2)

  • Change of baseline regulatory T cells (Tregs) at 6 weeks (after the intervention)

    Tregs are involved in modulating the immune system and maintaining tolerance to self-antigens and preventing autoimmune diseases. Regulatory T cells (Treg) will be quantified using multiparameter flow cytometry. Monoclonal antibodies specific for surface markers such as CD3, CD4, CD45RA, CD39 and CD25 will be combined with intracellular anti-Foxp3 for the identification of human Treg.

    Determination at baseline (day 0) and after 6 weeks (after the intervention)

  • Change of baseline regulatory T cells (Tregs) at 12 weeks (after the intervention and another 6 weeks of wash out)

    Tregs are involved in modulating the immune system and maintaining tolerance to self-antigens and preventing autoimmune diseases. The assessment of Tregs after 12 weeks aims to identify any persisting effects of the intervention.

    Determination at baseline and after 12 weeks (after the 6-weeks intervention and another 6 weeks of wash out)

Secondary Outcomes (2)

  • Change of baseline gut microbiome at 6 weeks (after the intervention)

    Determination at baseline (day 0) and after 6 weeks (after the intervention)

  • Change of baseline gut microbiome at 12 weeks (after the 6-weeks intervention and another 6 weeks of wash out)

    Determination at baseline and after 12 weeks (after the 6-weeks intervention and another 6 weeks of wash out)

Other Outcomes (2)

  • Change of baseline metabolome at 6 weeks (after the intervention)

    Determination at baseline (day 0) and after 6 weeks (after the intervention)

  • Change of baseline metabolome at 12 weeks (after the 6 weeks intervention and another 6 weeks of wash out)

    Determination at baseline and after 12 weeks (after the 6-weeks intervention and another 6 weeks of wash out)

Study Arms (6)

Verum Normal Weight

EXPERIMENTAL

Normal weight participants receiving polyphenol-rich Aronia juice (verum) (n=20) The aronia juice is derived from a local producer, a common food and commercially available.

Other: Aronia Juice

Verum Obesity

EXPERIMENTAL

Adipose participants receiving polyphenol-rich Aronia juice (verum) (n=20) The aronia juice is derived from a local producer, a common food and commercially available.

Other: Aronia Juice

Verum Depression

EXPERIMENTAL

Depressive participants receiving polyphenol-rich Aronia juice (verum) (n=20) The aronia juice is derived from a local producer, a common food and commercially available.

Other: Aronia Juice

Placebo Normal Weight

PLACEBO COMPARATOR

Normal weight participants receiving placebo (control) (n=20) The placebo drink is prepared according to a published recipe and contains nutrients such as sugars, vitamins and minerals. It has a comparable nutrients profile as the aronia juice but is completely polyphenol-free.

Other: Placebo

Placebo Obesity

PLACEBO COMPARATOR

Obese participants receiving placebo (control) (n=20) The placebo drink is prepared according to a published recipe and contains nutrients such as sugars, vitamins and minerals. It has a comparable nutrients profile as the aronia juice but is completely polyphenol-free

Other: Placebo

Placebo Depression

PLACEBO COMPARATOR

Depressive participants receiving placebo (control) (n=20) The placebo drink is prepared according to a published recipe and contains nutrients such as sugars, vitamins and minerals. It has a comparable nutrients profile as the aronia juice but is completely polyphenol-free

Other: Placebo

Interventions

The intervention is based an the additional consumption of 200 ml natural juice a day for a period of six weeks. The participants are asked to drink the natural and commercially available juice in addition to their regular diet. Further, they are asked not to change their diets and lifestyle behaviour during the intervention.

Verum DepressionVerum Normal WeightVerum Obesity
PlaceboOTHER

A beverage is prepared according to a known recipe. It contains macro- and micronutrients in comparable amounts like the aronia juice. It is completely polyphenol free.

Placebo DepressionPlacebo Normal WeightPlacebo Obesity

Eligibility Criteria

Age18 Years - 40 Years
Sexfemale
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Socio-demographic criteria:
  • Gender: female
  • Age: 18-40 years
  • Confirmation of the study settings
  • receives of information on
  • the aims,
  • methods,
  • anticipated benefits,
  • potential risks, and
  • entailed discomforts of the study
  • signed declaration of consent
  • Subgroup of depressive patients:
  • diagnosis of depression according to the ICD-10 criteria for depression
  • diagnosed by an experienced psychiatrist
  • a structured diagnostic interview
  • +6 more criteria

You may not qualify if:

  • Formal criteria:
  • lack of informed consent
  • Health criteria
  • alcohol- or drug abuse
  • major cognitive deficits (which do not allow adequate testing)
  • according to Mini Mental Status Examination (MMSE) \<20
  • patients which are currently in the locked ward of the clinic
  • acute or chronic diseases or infections within the previous two months
  • upper respiratory tract infections
  • fever
  • chronic inflammatory disorders
  • autoimmune-disorders
  • blood diseases
  • mitochondrial diseases
  • Digestive disorders
  • +9 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Medical Universtiy of Graz

Graz, Styria, 8010, Austria

RECRUITING

Related Publications (16)

  • Meyrel M, Varin L, Detaint B, Mouaffak F. [The intestinal microbiota: A new player in depression?]. Encephale. 2018 Feb;44(1):67-74. doi: 10.1016/j.encep.2017.03.005. Epub 2017 Apr 24. French.

    PMID: 28438331BACKGROUND
  • Koopman M, El Aidy S; MIDtrauma consortium. Depressed gut? The microbiota-diet-inflammation trialogue in depression. Curr Opin Psychiatry. 2017 Sep;30(5):369-377. doi: 10.1097/YCO.0000000000000350.

    PMID: 28654462BACKGROUND
  • De Rosa V, Galgani M, Santopaolo M, Colamatteo A, Laccetti R, Matarese G. Nutritional control of immunity: Balancing the metabolic requirements with an appropriate immune function. Semin Immunol. 2015 Sep;27(5):300-9. doi: 10.1016/j.smim.2015.10.001. Epub 2015 Oct 29.

    PMID: 26527507BACKGROUND
  • Abella V, Scotece M, Conde J, Pino J, Gonzalez-Gay MA, Gomez-Reino JJ, Mera A, Lago F, Gomez R, Gualillo O. Leptin in the interplay of inflammation, metabolism and immune system disorders. Nat Rev Rheumatol. 2017 Feb;13(2):100-109. doi: 10.1038/nrrheum.2016.209. Epub 2017 Jan 5.

    PMID: 28053336BACKGROUND
  • Perez-Perez A, Vilarino-Garcia T, Fernandez-Riejos P, Martin-Gonzalez J, Segura-Egea JJ, Sanchez-Margalet V. Role of leptin as a link between metabolism and the immune system. Cytokine Growth Factor Rev. 2017 Jun;35:71-84. doi: 10.1016/j.cytogfr.2017.03.001. Epub 2017 Mar 4.

    PMID: 28285098BACKGROUND
  • Bettelli E, Carrier Y, Gao W, Korn T, Strom TB, Oukka M, Weiner HL, Kuchroo VK. Reciprocal developmental pathways for the generation of pathogenic effector TH17 and regulatory T cells. Nature. 2006 May 11;441(7090):235-8. doi: 10.1038/nature04753. Epub 2006 Apr 30.

    PMID: 16648838BACKGROUND
  • Kim W, Lee H. Advances in nutritional research on regulatory T-cells. Nutrients. 2013 Oct 28;5(11):4305-15. doi: 10.3390/nu5114305.

    PMID: 24169507BACKGROUND
  • Kim YS, Sayers TJ, Colburn NH, Milner JA, Young HA. Impact of dietary components on NK and Treg cell function for cancer prevention. Mol Carcinog. 2015 Sep;54(9):669-78. doi: 10.1002/mc.22301. Epub 2015 Apr 1.

    PMID: 25845339BACKGROUND
  • Xue Z, Li D, Yu W, Zhang Q, Hou X, He Y, Kou X. Mechanisms and therapeutic prospects of polyphenols as modulators of the aryl hydrocarbon receptor. Food Funct. 2017 Apr 19;8(4):1414-1437. doi: 10.1039/c6fo01810f.

    PMID: 28287659BACKGROUND
  • Shanahan F, van Sinderen D, O'Toole PW, Stanton C. Feeding the microbiota: transducer of nutrient signals for the host. Gut. 2017 Sep;66(9):1709-1717. doi: 10.1136/gutjnl-2017-313872. Epub 2017 Jun 29.

    PMID: 28663354BACKGROUND
  • Vauzour D, Rodriguez-Mateos A, Corona G, Oruna-Concha MJ, Spencer JP. Polyphenols and human health: prevention of disease and mechanisms of action. Nutrients. 2010 Nov;2(11):1106-31. doi: 10.3390/nu2111106. Epub 2010 Nov 8.

    PMID: 22254000BACKGROUND
  • Mullan A, Delles C, Ferrell W, Mullen W, Edwards CA, McColl JH, Roberts SA, Lean ME, Sattar N. Effects of a beverage rich in (poly)phenols on established and novel risk markers for vascular disease in medically uncomplicated overweight or obese subjects: A four week randomized placebo-controlled trial. Atherosclerosis. 2016 Mar;246:169-76. doi: 10.1016/j.atherosclerosis.2016.01.004. Epub 2016 Jan 6.

    PMID: 26797134BACKGROUND
  • Aguirre L, Fernandez-Quintela A, Arias N, Portillo MP. Resveratrol: anti-obesity mechanisms of action. Molecules. 2014 Nov 14;19(11):18632-55. doi: 10.3390/molecules191118632.

    PMID: 25405284BACKGROUND
  • Chrubasik C, Li G, Chrubasik S. The clinical effectiveness of chokeberry: a systematic review. Phytother Res. 2010 Aug;24(8):1107-14. doi: 10.1002/ptr.3226.

    PMID: 20572194BACKGROUND
  • Morkl S, Lackner S, Muller W, Gorkiewicz G, Kashofer K, Oberascher A, Painold A, Holl A, Holzer P, Meinitzer A, Mangge H, Holasek S. Gut microbiota and body composition in anorexia nervosa inpatients in comparison to athletes, overweight, obese, and normal weight controls. Int J Eat Disord. 2017 Dec;50(12):1421-1431. doi: 10.1002/eat.22801. Epub 2017 Nov 13.

  • Lackner S, Mahnert A, Moissl-Eichinger C, Madl T, Habisch H, Meier-Allard N, Kumpitsch C, Lahousen T, Kohlhammer-Dohr A, Morkl S, Strobl H, Holasek S. Interindividual differences in aronia juice tolerability linked to gut microbiome and metabolome changes-secondary analysis of a randomized placebo-controlled parallel intervention trial. Microbiome. 2024 Mar 9;12(1):49. doi: 10.1186/s40168-024-01774-4.

MeSH Terms

Conditions

DepressionObesityCommunicable Diseases

Condition Hierarchy (Ancestors)

Behavioral SymptomsBehaviorOverweightOvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and SymptomsPathological Conditions, Signs and SymptomsInfectionsDisease AttributesPathologic Processes

Study Officials

  • Sandra Holasek, Prof.

    Medical Universtiy of Graz

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Masking Details
The randomizer (online tool of the Medical University of Graz) will be used for randomisation of group assignment. The two juices are provided in the same containers.
Purpose
PREVENTION
Intervention Model
PARALLEL
Model Details: This monocentric study is a food product study (comparison between in trade available polyphenol-rich juice and a placebo). Aronia juice is a locally produced, commercially available natural source of various secondary plant nutrients. It naturally contains high amounts of polyphenols. The placebo juice is prepared according to a published recipe and contains comparable amounts of nutrients such as vitamins and minerals but is totally polyphenol-free. Six study groups are designated: Group VN = normal weight participants receiving polyphenol-rich juice (verum) (n=20) Group VA = adipose participants receiving polyphenol-rich juice (verum) (n=20) Group VD = depressive patients receiving polyphenol-rich juice (verum) (n=20) Group CN = normal weight participants receiving placebo (control) (n=20) Group CA = adipose participants receiving placebo (control) (n=20) Group CD = depressive patients receiving placebo (control) (n=20)
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

June 13, 2022

First Posted

June 27, 2022

Study Start

February 25, 2019

Primary Completion

January 31, 2026

Study Completion

January 31, 2026

Last Updated

November 27, 2024

Record last verified: 2024-11

Locations