- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01182103
Epigenetic Regulation of BDNF in Major Depression
Epigenetic Regulation of Brain-Derived Neurotropic Factor (BDNF) in Patients With Major Depression
Study Overview
Status
Conditions
Detailed Description
Brain-derived neurotrophic factor (BDNF) had been chosen as a candidate gene for a development of major depressive disorder (MDD). BDNF had been reported to have an important role on neuronal plasticity, axonal growth and connectivity, and participating in the local response to various types of neuronal stressors. BDNF also influences the differentiation of neurons.
In the past studies, the investigators had found that major depressive women had lower serum BDNF protein levels than healthy controls, and their BDNF levels became significantly increased after antidepressant treatments. In addition, some authors had found that reduced expression of BDNF was noted in postmortem brain of completed suicide subjects. Suicidal major depressive patients also had lower plasma BDNF levels than non-suicidal major depressive patients. These findings suggested that BDNF might play an important role in the suicidal behavior.
However, in past studies, the results did not fully explain why major depressive patients with same genotypes had different clinical expression, including the severity of depression, with/without suicide, and the treatment response. Recently, some papers found that there were relationships between epigenetic regulation, including DNA methylation and histone modification, and psychopathology of major depression. Therefore, we try to investigate the relationships between epigenetic regulation of BDNF and major depression.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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Kaohsiung, Taiwan, 833
- Department of Psychiatry, Chang Gung Memorial Hospital
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
The clinical screening and assessment in patients with major depression:
- 40 major depression will be recruited in psychiatric inpatients according to DSM-IV criteria by a semi-structured interview. The assessment will be done by two senior psychiatrists. The intra-rater and inter-rater reliability will be done before this project started.
- The patients had the ability to complete the written inform consent.
- The choice of antidepressant drugs depended on the need of patients in natural treatment procedure. They included selective serotonin reuptake inhibitors (SSRI), eg. fluoxetine or paroxetine.
- The 17-item Hamilton Depression Rating Scale (HAM-D) was used to assess severity of depression. The minimum baseline score of the 17-item HAM-D was 18.
Exclusion Criteria:
- The patients had systemic diseases, including metabolic, heart, and liver diseases。
- The patients had received any drugs before entering this protocol.
- The patients were heavy smokers or dependent on alcohol.
- The use of secondary generation anti-psychotic drugs and mood stabilizers.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
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Healthy subjects
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Major depressive patients
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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Brain-derived Neurotrophic Factor (BDNF) DNA Methylation of Major Depressive Disorder (MDD) Patients and Healthy Controls
Time Frame: 2 years
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averaged percentage of methylation at each CpG site listed
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2 years
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Histone Modification of MDD Patients Before and After Treatment and With Healthy Controls
Time Frame: 2 years
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Chromatin immunoprecipitation (ChIP) was used to measure histone modification. The unit of our given machine is relative quantification, and a higher value indicated increased histone modification. The detailed method could be found in: Huebert DJ, Kamal M, O'Donovan A, Bernstein BE: Genome-wide analysis of histone modifications by ChIP-on-chip. Methods 2006; 40: 365-369. |
2 years
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
BDNF Levels of MDD Patients Before and After Treatment and Healthy Controls
Time Frame: 2 years
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Serum BDNF levels were measured. MDD patients received antidepressant treatment, a standard biological management. Nothing novel (such as experimental drugs or management) is introduced in the treatment, so the research design is observational (of standard treatment). The choice of antidepressant drugs depended on the need of patients in natural treatment procedure. They included selective serotonin reuptake inhibitors (SSRI), eg. fluoxetine or paroxetine. |
2 years
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Tiao-Lai Huang, M.D., Chang-Gung Memorial Hospital, Kaohsiung
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- NSC99-2628-B-182-002-MY2
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