- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03127176
Dysbiosis in Bipolar Disorder (MOB)
August 25, 2021 updated by: Iria Grande, Hospital Clinic of Barcelona
Dysbiosis in Bipolar Disorder: MicrObiota Bipolar Study
The gut microbiota is a complex community comprising around 10^14 bacteria that live in the gut lumen.
The imbalance of the normal structure and function of the microbiota, defined as dysbiosis, has been related to a wide diversity of pathologies, including mental health disorders.
However, clinical evidence of the relationship between microbiota and mood disorders is lacking.
The aim of this project is to examine the possible relationship of gut dysbiosis and the diagnosis of bipolar disorder (BD), of gut dysbiosis and mood relapses and of gut dysbiosis and cognitive impairment in bipolar patients.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
A prospective longitudinal study will be carried out with three groups of patients: a group of euthymic bipolar I or II patients without cognitive impairment (n=50), a second group of euthymic bipolar I or II patients with cognitive impairment (n=50) and a control group of healthy volunteers (n=50).
Cognitive impairment will be defined as performance in any test of a domain below 2 standard deviations or more from the mean of normative data of each test assessed in the control group.
Subjects will be recruited in the Hospital Clinic of Barcelona.
At baseline clinical variables and diet patterns (ROME III) will be collected and neuropsychological performance (WCST, FAS, Stroop Colour-Word Interference test, TMT, WAIS-III, CVLT-II) and functionality (FAST) will be assessed.
All subjects will be reassessed at 12 months follow-up.
The mood state and possible affective relapses will be evaluated and treatments will be registered.
All patients will receive standard psychiatric care according to international guidelines on bipolar disorders.
Fecal samples will be collected and then frozen in the morning pre-prandial after having fasted overnight.
DNA will be separated and stored at -80°C until assayed.
Sequencing will be performed on an Illumina MiSeqTM platform.
Statistical analysis will be performed with the latest existing version of the SPSS.
Study Type
Observational
Enrollment (Actual)
80
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
-
Barcelona, Spain, 08036
- Hospital Clinic Barcelona
-
-
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 55 years (ADULT)
Accepts Healthy Volunteers
Yes
Genders Eligible for Study
All
Sampling Method
Non-Probability Sample
Study Population
Subjects with BD will be recruited in the Bipolar Unit outpatient clinic in the Hospital Clinic of Barcelona.
Healthy volunteers will be selected from the community.
Description
Inclusion Criteria:
Patients:
- Diagnosis of bipolar disorder type I or II according to DSM-IV criteria (SCID);
- Age between 18-55 years;
- Euthymia (YMRS<6 and HMDRS<8) for at least 3 months;
- Signed informed consent.
Healthy controls:
- No psychiatric diagnosis (SCID);
- Age between 18-55 years; euthymia (YMRS<6 and HMDRS<8);
- Signed informed consent.
Exclusion Criteria:
- Use of any type of antibiotics, antifungals or pro/prebiotics within at least one month prior to recruitment;
- IQ<85;
- Neurological illness;
- Stomach/gut problems;
- Current diagnosis of substance abuse or dependence according to DSM-IV criteria (SCID);
- Electroconvulsive therapy in the last year.
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
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
BD with cognitive impairment
This group will include euthymic patients with bipolar disorder type I or II (YMRS<6 and HMDRS<8) and cognitive impairment. Intervention: Genome sequencing of fecal samples |
Fecal samples will be collected and then frozen in the morning pre-prandial after having fasted overnight.
DNA will be separated and stored at -80°C in our center (Biobanc) until assayed.
Sequencing will be performed with the most appropriate platform.
|
BD without cognitive impairment
This group will include euthymic patients with bipolar disorder type I or II (YMRS<6 and HMDRS<8) without cognitive impairment. Intervention: Genome sequencing of fecal samples |
Fecal samples will be collected and then frozen in the morning pre-prandial after having fasted overnight.
DNA will be separated and stored at -80°C in our center (Biobanc) until assayed.
Sequencing will be performed with the most appropriate platform.
|
Control group
This group will include healthy volunteers.
Intervention: Genome sequencing of fecal samples
|
Fecal samples will be collected and then frozen in the morning pre-prandial after having fasted overnight.
DNA will be separated and stored at -80°C in our center (Biobanc) until assayed.
Sequencing will be performed with the most appropriate platform.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Composition of the gut microbiota.
Time Frame: 12 months
|
To determine if patients diagnosed with BD present gut dysbiosis compared to controls through genome sequencing of fecal samples.
|
12 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Composition of the gut microbiota according to mood state.
Time Frame: 12 months
|
Gut dysbiosis will be determined according to mood state, assessed using clinical evaluation.
|
12 months
|
Composition of the gut microbiota according to cognitive state.
Time Frame: 12 months
|
Gut dysbiosis will be determined according to cognitive state, assessed using a pre-defined neuropsychological battery.
|
12 months
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Collaborators
Investigators
- Principal Investigator: Iria Grande, MD, PhD, Bipolar Disorders Unit, Hospital Clinic, Institute of Neurosciences, University of Barcelona, IDIBAPS, CIBERSAM
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 (ACTUAL)
October 1, 2019
Primary Completion (ACTUAL)
June 30, 2021
Study Completion (ACTUAL)
June 30, 2021
Study Registration Dates
First Submitted
March 29, 2017
First Submitted That Met QC Criteria
April 24, 2017
First Posted (ACTUAL)
April 25, 2017
Study Record Updates
Last Update Posted (ACTUAL)
August 26, 2021
Last Update Submitted That Met QC Criteria
August 25, 2021
Last Verified
August 1, 2021
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- PI 16/00187
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
UNDECIDED
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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