NCT04756544

Brief Summary

The trial will be a four-arm, parallel group, prospective, randomized, double-blind, controlled design that will include 200 participants and will last 20 weeks. The probiotic preparation will contain Lactobacillus helveticus Rosell®-52, Bifidobacterium longum Rosell®-175. We will assess the level of depression, anxiety and stress, quality of life, blood pressure, body mass index and waist circumference, white blood cells count, serum levels of C-reactive protein, HDL cholesterol, triglicerides, fasting glucose, faecal microbiota composition and the level of some faecal microbiota metabolites, as well as inflammation markers and oxidative stress parameters in serum. The trial may establish a safe and easy-to-use treatment option as an adjunct in a subpopulation of depressive patients only partially responsive to pharmacologic treatment.

Trial Health

43
At Risk

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
200

participants targeted

Target at P25-P50 for phase_3

Timeline
Completed

Started Dec 2020

Typical duration for phase_3

Geographic Reach
1 country

1 active site

Status
unknown

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

December 17, 2020

Completed
2 months until next milestone

First Submitted

Initial submission to the registry

February 11, 2021

Completed
5 days until next milestone

First Posted

Study publicly available on registry

February 16, 2021

Completed
1.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2022

Completed
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2023

Completed
Last Updated

February 16, 2021

Status Verified

February 1, 2021

Enrollment Period

2 years

First QC Date

February 11, 2021

Last Update Submit

February 11, 2021

Conditions

Keywords

depression; metabolic syndrome; probiotics; microbiota; inflammation; oxidative stress

Outcome Measures

Primary Outcomes (1)

  • depressive symptoms

    MADRS score

    2 years

Study Arms (4)

Depressive Disorders + probiotic

EXPERIMENTAL
Dietary Supplement: Lactobacillus helveticus Rosell®-52, Bifidobacterium longum Rosell®-175

Depressive Disorders + placebo

PLACEBO COMPARATOR
Other: placebo

Depressive disorder + metabolic syndrome + probiotic

EXPERIMENTAL
Dietary Supplement: Lactobacillus helveticus Rosell®-52, Bifidobacterium longum Rosell®-175

Depressive disorder + metabolic syndrome + placebo

PLACEBO COMPARATOR
Other: placebo

Interventions

probiotic

Depressive Disorders + probioticDepressive disorder + metabolic syndrome + probiotic
placeboOTHER

placebo

Depressive Disorders + placeboDepressive disorder + metabolic syndrome + placebo

Eligibility Criteria

Age18 Years - 120 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Depressive disorders diagnosed according to ICD Age between 18 and 70 years MADRS score \>=13 Antidepressant and antianxiety medications or psychotherapy not changed 3 weeks prior to the beginning of the study DMS study groups: MetS diagnosed according to International Diabetes Federation (IDF)

You may not qualify if:

  • Pregnancy; An infection and/or treatment with antibiotics in the previous 4 weeks; Supplementation with pro- or prebiotics in the previous 4 weeks; Having a diagnosis of autoimmune, serious immunocompromised, inflammatory bowel diseases, cancer, IgE-dependent allergy, severe kidney failure or unstable thyroid dysfunction in the previous 4 weeks; Psychiatric comorbidities (except for specific personality disorder, additional specific anxiety disorder and caffeine or nicotine addiction); Regular treatment (more than 3 days a week) with proton-pump inhibitors (PPIs), metformin, laxatives, systemic steroids or nonsteroidal anti-inflammatory drugs (NSAIDs) in the previous 4 weeks; Following a specific diet or a significant change in dietary pattern in the previous 4 weeks; Significant change in daily physical activity or an extreme sport activity in the previous 4 weeks; Significant change in dietary supplementation in the previous 4 weeks; Significant change in smoking pattern in the previous 4 weeks; A major neurological disorder or any medical disability that may interfere with a subject's ability to complete study procedures; High risk of suicide according to Tool of Assessment of Suicide Risk (TASR); Is participating in, or has recently participated in, another research study involving an intervention which may alter outcomes of interest to this study; Any other condition or situation which, in the view of investigators, would affect the compliance or safety of the individual taking part; D study groups: MetS diagnosed according to International Diabetes Federation (IDF).

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Oliwia Gawlik-Kotelnicka

Lodz, 92216, Poland

RECRUITING

Related Publications (6)

  • Kotelnicka OG, Wysokinski A, Gajewska A, Czarnecka-Chrebelska K, Kopacz K, Skowronska A, Pikus E, Brzezianska-Lasota E, Strzelecki D. Probiotics Decrease C-Reactive Protein Levels in Depression Depending on Metabolic Syndrome Presence or Antidepressant Treatment - Secondary Results of a Randomized Clinical Trial. Curr Neuropharmacol. 2025 Oct 29. doi: 10.2174/011570159X371175251002220658. Online ahead of print.

  • Gawlik-Kotelnicka O, Sobczak M, Palma J, Poplawska M, Skonieczna-Zydecka K, Plewka M, Pawliczak R, Strzelecki D. Does isovaleric acid play a key role in the interaction between probiotics and antidepressants? A secondary analysis of a randomized clinical trial. Comput Struct Biotechnol J. 2025 May 27;27:2275-2287. doi: 10.1016/j.csbj.2025.05.035. eCollection 2025.

  • Gawlik-Kotelnicka O, Rogalski J, Czarnecka-Chrebelska KH, Burzynski J, Jakubowska P, Skowronska A, Strzelecki D. The Interplay Between Depression, Probiotics, Diet, Immunometabolic Health, the Gut, and the Liver-A Secondary Analysis of the Pro-Demet Randomized Clinical Trial. Nutrients. 2024 Nov 24;16(23):4024. doi: 10.3390/nu16234024.

  • Gawlik-Kotelnicka O, Burzynski J, Rogalski J, Skowronska A, Strzelecki D. Probiotics may be useful for drug-induced liver dysfunction in patients with depression - A secondary analysis of a randomized clinical trial. Clin Nutr ESPEN. 2024 Oct;63:604-614. doi: 10.1016/j.clnesp.2024.07.1024. Epub 2024 Jul 30.

  • Gawlik-Kotelnicka O, Margulska A, Pleska K, Skowronska A, Strzelecki D. Metabolic Status Influences Probiotic Efficacy for Depression-PRO-DEMET Randomized Clinical Trial Results. Nutrients. 2024 May 3;16(9):1389. doi: 10.3390/nu16091389.

  • Gawlik-Kotelnicka O, Skowronska A, Margulska A, Czarnecka-Chrebelska KH, Loniewski I, Skonieczna-Zydecka K, Strzelecki D. The Influence of Probiotic Supplementation on Depressive Symptoms, Inflammation, and Oxidative Stress Parameters and Fecal Microbiota in Patients with Depression Depending on Metabolic Syndrome Comorbidity-PRO-DEMET Randomized Study Protocol. J Clin Med. 2021 Mar 24;10(7):1342. doi: 10.3390/jcm10071342.

MeSH Terms

Conditions

Depressive DisorderDepressionAnxiety DisordersMetabolic SyndromeNon-alcoholic Fatty Liver DiseaseInflammation

Condition Hierarchy (Ancestors)

Mood DisordersMental DisordersBehavioral SymptomsBehaviorInsulin ResistanceHyperinsulinismGlucose Metabolism DisordersMetabolic DiseasesNutritional and Metabolic DiseasesFatty LiverLiver DiseasesDigestive System DiseasesPathologic ProcessesPathological Conditions, Signs and Symptoms

Central Study Contacts

Oliwia Gawlik-kotelnicka

CONTACT

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Dr.

Study Record Dates

First Submitted

February 11, 2021

First Posted

February 16, 2021

Study Start

December 17, 2020

Primary Completion

December 31, 2022

Study Completion

December 31, 2023

Last Updated

February 16, 2021

Record last verified: 2021-02

Locations