Effect of Probiotic on Comorbidity of Depression and Constipation

September 25, 2020 updated by: Fazheng Ren, China Agricultural University

Effect of Probiotic on Chinese Patients With Depression and Constipated Comorbidity

Depressive disorder, also known as depression, is a type of mood disorder characterized by persistent low mood. The incidence of depression worldwide is about 6%. The high comorbidity rate between depression and constipation indicated the role of the gut-brain axis in depression. Growing evidence suggested that the gut microbiota plays a key role in the development of depression. Probiotics can effectively improve constipation and regulate gut microbiota, and showed potential in alleviating depression. This study investigated the effect of formula probiotic (containing Lactobacillus paracasei, Bifidobacterium animals, Bifidobacterium longum, Bifidobacterium bifidum, and Lactobacillus plantarum) on the comorbidity of depression and constipation.

Study Overview

Study Type

Interventional

Enrollment (Anticipated)

200

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

    • Jiangsu
      • Nanjing, Jiangsu, China, 210001
        • The Affiliated Nanjing Hospital of Nanjing University of Chinese Medicine
        • Contact:
          • Min Ni, PhD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Normal body mass index ≥ 18.5 until ≤ 29.9
  • Hamilton Rating Scale for Depression (HAMD-17) score not less than 8
  • Meet the ROME III criteria for functional constipation
  • Agreed to intake study product during the study period
  • Agreed to sign written informed consent

Exclusion Criteria:

  • Use of systemic antibiotics or antimycotics medication in the 30 days prior to the study
  • Investigator's uncertainty about the willingness or ability of subject to comply with the protocol requirements
  • Persons with a milk protein allergy, lactose intolerance
  • Pregnant or breastfeeding women
  • Subject had other serious diseases

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Placebo Comparator: Placebo
Placebo made with only the excipients. The placebo sachet was matched to the study probiotic products for taste, color, and size.
Patients receive the placebo identical to probiotic for consecutive 8 weeks ( one sachet per day ).
Experimental: Probiotic
Formula probiotic contains freeze-dried Lactobacillus paracasei, Bifidobacterium animals, Bifidobacterium longum, Bifidobacterium bifidum, and Lactobacillus plantarum, each at a dosage of 3.0 × 10^10 colony forming unit per 2g sachet.
Patients receive the formula probiotic for consecutive 8 weeks ( one sachet per day ).

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Hamilton Depression Rating Scale
Time Frame: Change from baseline score to intervention measurements at 4 and 8 weeks
Depressive symptoms as measured with the Hamilton Rating Scale for Depression. The score rangs from 0 to 53. The higher score means severer depressive symptoms.
Change from baseline score to intervention measurements at 4 and 8 weeks

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Patient Assessment of Constipation Symptom
Time Frame: changes from baseline score to intervention measurements at 4 and 8 weeks
Constipation symptoms as measured with the Patient Assessment of Constipation Symptom. The score ranges from 0 to 48. The higher score means severer constipated symptoms.
changes from baseline score to intervention measurements at 4 and 8 weeks
Serum Il-1β
Time Frame: changes from baseline level to intervention measurements at 4 and 8 weeks
Serum Il-1β levels before and after intervention assessed by ELISA.
changes from baseline level to intervention measurements at 4 and 8 weeks
Serum Il-6
Time Frame: changes from baseline level to intervention measurements at 4 and 8 weeks
Serum Il-6 levels before and after intervention assessed by ELISA.
changes from baseline level to intervention measurements at 4 and 8 weeks
Serum TNF-α
Time Frame: changes from baseline level to intervention measurements at 4 and 8 weeks
Serum TNF-α levels before and after intervention assessed by ELISA.
changes from baseline level to intervention measurements at 4 and 8 weeks
Serum cortisol
Time Frame: changes from baseline level to intervention measurements at 4 and 8 weeks
Serum cortisol levels before and after intervention assessed by ELISA.
changes from baseline level to intervention measurements at 4 and 8 weeks
Serum Brain-derived neurotrophic factor
Time Frame: changes from baseline level to intervention measurements at 4 and 8 weeks
Serum Brain-derived neurotrophic factor levels before and after intervention assessed by ELISA.
changes from baseline level to intervention measurements at 4 and 8 weeks
Serum concentrations of tryptophan metabolites
Time Frame: Changes from baseline level to intervention measurements at 4 and 8 weeks
Serum concentrations of tryptophan metabolites quantified by High-Performance Liquid Chromatography and Mass Spectrometry
Changes from baseline level to intervention measurements at 4 and 8 weeks
Serum concentrations of bile acid
Time Frame: Changes from baseline level to intervention measurements at 4 and 8 weeks
Quantification by High-Performance Liquid Chromatography and Mass Spectrometry
Changes from baseline level to intervention measurements at 4 and 8 weeks
Fecal microbiome
Time Frame: Changes from baseline to intervention measurements at 4 and 8 weeks
Fecal microbiome measured by next generation sequencing
Changes from baseline to intervention measurements at 4 and 8 weeks
Stool form
Time Frame: Change from baseline score to intervention measurements at 4 and 8 weeks
Stool form measured with the Bristol Stool Form Scale, which classify the form of human faeces into seven types, successively named type 1 to type 7. Types 1 and 2 indicate constipation, with 3 and 4 being the ideal stools as they are easy to defecate while not containing excess liquid, 5 indicating lack of dietary fiber, and 6 and 7 indicate diarrhoea.
Change from baseline score to intervention measurements at 4 and 8 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Fazhen Ren, PhD, China Agricultural University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Anticipated)

November 1, 2020

Primary Completion (Anticipated)

June 30, 2021

Study Completion (Anticipated)

December 30, 2021

Study Registration Dates

First Submitted

September 22, 2020

First Submitted That Met QC Criteria

September 25, 2020

First Posted (Actual)

September 30, 2020

Study Record Updates

Last Update Posted (Actual)

September 30, 2020

Last Update Submitted That Met QC Criteria

September 25, 2020

Last Verified

September 1, 2020

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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