Study on the Gut Microbial Mechanism of Negative Symptoms of Schizophrenia
Primary Purpose
Negative Symptom, Schizophrenia, Amisulpride
Status
Unknown status
Phase
Early Phase 1
Locations
Study Type
Interventional
Intervention
Amisulpride
Sponsored by
About this trial
This is an interventional treatment trial for Negative Symptom focused on measuring Gut microbiota-brain axis, Negative symptom, Schizophrenia, Amisulpride
Eligibility Criteria
Inclusion Criteria:
- 18-45 years old, Han nationality, no gender limit;
- Meet the diagnostic criteria of "Schizophrenia" in the American Diagnostic Standards for Mental Disorders (DSM-V);
- The first attack, no antipsychotic drugs have been used in the past six months;
- The PANSS negative symptom subscale has at least 3 items with 4 points and above or at least two items with 5 points and above, and the positive symptoms score is less than 19 points;
- The negative symptom score is at least 6 points or more higher than the positive symptom score;
- The cultural, social and educational background is sufficient to understand informed consent and research content.
Exclusion Criteria:
- 1.Combined with DSM-V diagnosis other than schizophrenia;
- .G6≥4 points in PANSS, or CDSS≥6 points;
- .SAS Side Reaction Scale> 3 points;
- Organic diseases of the central nervous system;
- In the past two months, there were people who were dependent or abused on alcohol or other substances, which caused significant impairment of social and cognitive function;
- In the past year, there have been major life events such as widowhood;
- Serious suicide attempts;
- .The current patient's severe and unstable physical disease;
- .Pregnant and lactating women;
- Have a history of antibiotic use of more than 3 days within 3 months;
- Use probiotics (lactic acid products, etc.) for more than 3 days within 3 months;
- Type 1 diabetes and severe diabetes complications;
- .Digestive system diseases such as gastrointestinal inflammation, acute or chronic hepatitis;
- .Severe organ diseases, such as cancer, coronary heart disease, myocardial infarction, cerebral hemorrhage;
- .Have infectious diseases, such as tuberculosis, AIDS;
- Drug treatment of cholecystitis, peptic ulcer, urinary tract infection, acute nephritis, cystitis or hyperthyroidism.
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm Type
Experimental
No Intervention
Arm Label
Study group
Healthy control group
Arm Description
Recruit 30 outpatient/inpatient schizophrenia patients (dominant negative symptoms) in Shanghai Mental Health Center .
15 cases of normal healthy people (control group) with similar eating habits and ages in the same region were matched with study group.
Outcomes
Primary Outcome Measures
The change of intestinal microbial flora
The main evaluation index is the difference between the change of intestinal microbial flora in the study group and the control group before and after treatment.
Secondary Outcome Measures
PANSS negative symptom scale score reduction rate
The secondary evaluation index is the PANSS negative symptom scale score reduction rate ≥ 20%
Full Information
NCT ID
NCT04533724
First Posted
August 22, 2020
Last Updated
August 26, 2020
Sponsor
Shanghai Mental Health Center
1. Study Identification
Unique Protocol Identification Number
NCT04533724
Brief Title
Study on the Gut Microbial Mechanism of Negative Symptoms of Schizophrenia
Official Title
Study on the Gut Microbial Mechanism of Negative Symptoms of Schizophrenia
Study Type
Interventional
2. Study Status
Record Verification Date
August 2020
Overall Recruitment Status
Unknown status
Study Start Date
October 1, 2020 (Anticipated)
Primary Completion Date
September 1, 2022 (Anticipated)
Study Completion Date
September 30, 2022 (Anticipated)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Shanghai Mental Health Center
4. Oversight
Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Product Manufactured in and Exported from the U.S.
No
Data Monitoring Committee
Yes
5. Study Description
Brief Summary
Negative symptoms are one of the five-dimensional symptoms of patients with schizophrenia, and medications are not effective in treating negative symptoms. The mechanism of negative symptoms of schizophrenia is unknown, which may be related to insufficient dopamine function of the prefrontal cortex. Amisulpride is a D2/D3 receptor antagonist, which can improve negative symptoms. Intestinal microbes are related to central nervous system mental diseases. Animal studies have found that changes in the intestinal microflora are related to schizophrenia. Clinical studies have found that the gut microbes of patients with schizophrenia are different from those of normal healthy people. Therefore, we are trying to discover the changes of gut microbes in patients with effective amisulpride treatment, and to improve the negative symptoms of schizophrenia patients through the intestinal immune system. The mechanism of brain relationship provides direction, and also provides a new way for the drug treatment of negative symptoms.
Detailed Description
Negative symptoms are one of the five-dimensional symptoms of patients with schizophrenia. Drug treatment of negative symptoms is not effective. Even if the positive symptoms are relieved, the negative symptoms continue to exist, which seriously affects the personal family social function and is an important risk factor for poor prognosis. The mechanism of negative symptoms of schizophrenia is unknown, which may be related to insufficient dopamine function of the prefrontal cortex, but the pathogenesis is still not fully explained. Amisulpride is a D2/D3 receptor antagonist, which can improve negative symptoms, but the mechanism is not clear. Intestinal microbes are related to central nervous system psychiatric diseases, and intestinal flora imbalance may be an important cause of autism, anxiety, depression, schizophrenia and other mental and psychological diseases. Under pathological conditions, when the intestinal microbiome is disturbed or the intestinal mucosal barrier is destroyed, microbial-related molecules stimulate macrophages and dendritic cells to produce pro-inflammatory cytokines, which in turn activate adaptive immune cells, leading to the destruction of immune homeostasis and enteric nerves The system can also interact with the central nervous system through the brain-gut axis. Intestinal microbes may also influence the occurrence of mental illness through metabolites. Animal studies have found that changes in the intestinal microflora are related to schizophrenia. Clinical studies have found that the gut microbes of patients with schizophrenia are different from those of normal healthy people. Therefore, we are trying to discover the changes of gut microbes in patients with effective amisulpride treatment, and to improve the negative symptoms of schizophrenia patients through the intestinal immune system. The mechanism of brain relationship provides direction, and also provides a new way for the drug treatment of negative symptoms. This study intends to select 30 patients with schizophrenia with dominant negative symptoms (study group) and 15 healthy people with similar living environment (control group), and the study group will be treated with amisulpride (flexible treatment), negative symptom factor The score reduction rate reached 20% for the effective group. Followed up for 8 weeks, fresh stool samples were collected at the baseline, 2, 4, and 8 weekends for 16S rRNA sequencing and short-chain fatty acid detection, and whole blood samples for immune factors (IL-1β, IL-6, IL-10, TNF) -α) Test to assess the negative symptom factor scores of PANSS, CDSS, CGI, TESS, SAS, and Barnes akathisia, and evaluate the patient's negative symptoms, depressive symptoms, efficacy and adverse reactions in turn. Comparing the differences in the intestinal microflora of the two groups at baseline, the correlation between the changes of the intestinal microflora of the effective group of amisulpride and the immune factors and negative symptoms. To understand the pathogenesis of schizophrenia patients with dominant negative symptoms through the gut microbiota-brain axis.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Negative Symptom, Schizophrenia, Amisulpride, Gut Microbiomes
Keywords
Gut microbiota-brain axis, Negative symptom, Schizophrenia, Amisulpride
7. Study Design
Primary Purpose
Treatment
Study Phase
Early Phase 1
Interventional Study Model
Parallel Assignment
Masking
None (Open Label)
Allocation
Non-Randomized
Enrollment
6 (Anticipated)
8. Arms, Groups, and Interventions
Arm Title
Study group
Arm Type
Experimental
Arm Description
Recruit 30 outpatient/inpatient schizophrenia patients (dominant negative symptoms) in Shanghai Mental Health Center .
Arm Title
Healthy control group
Arm Type
No Intervention
Arm Description
15 cases of normal healthy people (control group) with similar eating habits and ages in the same region were matched with study group.
Intervention Type
Drug
Intervention Name(s)
Amisulpride
Intervention Description
The amisulpride treatment group was given amisulpride tablets. The dose: the initial dose was 50 mg/d. The doctor titrated the dose to the therapeutic amount within 1 to 2 weeks according to the patient's condition. The maximum dose was 300 mg/d, taken with a single meal. Observe for 8 weeks.
Primary Outcome Measure Information:
Title
The change of intestinal microbial flora
Description
The main evaluation index is the difference between the change of intestinal microbial flora in the study group and the control group before and after treatment.
Time Frame
12 weeks
Secondary Outcome Measure Information:
Title
PANSS negative symptom scale score reduction rate
Description
The secondary evaluation index is the PANSS negative symptom scale score reduction rate ≥ 20%
Time Frame
12 weeks
10. Eligibility
Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
45 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria:
18-45 years old, Han nationality, no gender limit;
Meet the diagnostic criteria of "Schizophrenia" in the American Diagnostic Standards for Mental Disorders (DSM-V);
The first attack, no antipsychotic drugs have been used in the past six months;
The PANSS negative symptom subscale has at least 3 items with 4 points and above or at least two items with 5 points and above, and the positive symptoms score is less than 19 points;
The negative symptom score is at least 6 points or more higher than the positive symptom score;
The cultural, social and educational background is sufficient to understand informed consent and research content.
Exclusion Criteria:
1.Combined with DSM-V diagnosis other than schizophrenia;
.G6≥4 points in PANSS, or CDSS≥6 points;
.SAS Side Reaction Scale> 3 points;
Organic diseases of the central nervous system;
In the past two months, there were people who were dependent or abused on alcohol or other substances, which caused significant impairment of social and cognitive function;
In the past year, there have been major life events such as widowhood;
Serious suicide attempts;
.The current patient's severe and unstable physical disease;
.Pregnant and lactating women;
Have a history of antibiotic use of more than 3 days within 3 months;
Use probiotics (lactic acid products, etc.) for more than 3 days within 3 months;
Type 1 diabetes and severe diabetes complications;
.Digestive system diseases such as gastrointestinal inflammation, acute or chronic hepatitis;
.Severe organ diseases, such as cancer, coronary heart disease, myocardial infarction, cerebral hemorrhage;
.Have infectious diseases, such as tuberculosis, AIDS;
Drug treatment of cholecystitis, peptic ulcer, urinary tract infection, acute nephritis, cystitis or hyperthyroidism.
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Qinyu Lv
Phone
18616550357
Email
lvqinyu_louis@163.com
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Qinyu Lv
Organizational Affiliation
Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine
Official's Role
Principal Investigator
First Name & Middle Initial & Last Name & Degree
Qi Zhang
Organizational Affiliation
Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine
Official's Role
Study Chair
First Name & Middle Initial & Last Name & Degree
Zhenghui Yi
Organizational Affiliation
Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine
Official's Role
Study Chair
First Name & Middle Initial & Last Name & Degree
Congze Wang
Organizational Affiliation
Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine
Official's Role
Study Chair
First Name & Middle Initial & Last Name & Degree
Huanling Zhang
Organizational Affiliation
Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine
Official's Role
Study Chair
First Name & Middle Initial & Last Name & Degree
Xinxin Huang
Organizational Affiliation
Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine
Official's Role
Study Chair
12. IPD Sharing Statement
Plan to Share IPD
No
Learn more about this trial
Study on the Gut Microbial Mechanism of Negative Symptoms of Schizophrenia
We'll reach out to this number within 24 hrs