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Clinical Trial Summary

Affective disorders (mainly including major depressive disorder and bipolar disorder) are common, chronic and highly disabling mental disorders, which lack of objective biological markers. It is believed that genetic and environmental factors are involved in the development of affective disorders. Gut microbes can affect the function of brain neural circuits by mediating metabolic, immune, endocrine and autonomic changes along the brain-gut axis. The brain can also regulate intestinal microbes through endocrine, neural structure, neurogenic exosomes and other pathways. Based on the brain-gut axis, this study intends to establish a large cohort of affective disorders, and screen out efficient and convenient biomarkers for clinical diagnosis and efficacy prediction by studying key indicators such as intestinal microbes, serum metabolites and immune indexes, brain-derived exosomes, and brain functional imaging.


Clinical Trial Description

Mental health is a major public health problem affecting the whole social and economic development. According to a 2019 report in The Lancet Psychiatry, the weighted lifetime prevalence of mental disorders (excluding dementia) in China is 16.6%, with the lifetime prevalence of emotional disorders as high as 7.4%.Affective disorders (mainly including depression and bipolar disorder) are common, chronic and highly disabling mental disorders.Back in 2008, the World Health Organization listed MDD(Major Depressive Disorder) as one of the three major contributors to the overall global burden of disease. It is expected that by 2030, the number of MDD patients will exceed the total number of cardiovascular disease patients combined and become the leading cause of disability in the world. At present, the diagnostic criteria of mental disorders, including DSM-5 and ICD-11, still mainly rely on the evaluation of symptoms, lacking objective and intuitive biomarkers. Therefore psychiatrists are prone to disagreement in diagnosis and treatment of diseases, which is a realistic bottleneck hindering the development of psychiatry. The differential diagnosis of MDD and BD depressive episodes is an unavoidable clinical challenge, which often leads to misdiagnosis and affects the treatment and prognosis of the disease. Therefore, it is one of the important directions for the development of brain science to strengthen scientific research in the field of mental health, especially to explore the mechanism of disease occurrence and development, develop objective new auxiliary diagnostic technologies and innovate precise treatment strategies around major emotional disorders. It is believed that genetic and environmental factors are involved in the development of affective disorders. Gut microbes can affect the function of brain neural circuits by mediating metabolic, immune, endocrine and autonomic changes along the brain-gut axis. The brain can also regulate intestinal microbes through endocrine, neural structure, neurogenic exosomes and other pathways. This study based on brain - im axis, intends to create an emotional disorder large queue, through the study of gut microbes (diversity and abundance of species), serum metabolites, and immune index, brain outside source sex secretion, brain imaging and other key indicators, select high efficiency and convenient for clinical diagnosis and curative effect of prediction of biomarkers. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05480150
Study type Interventional
Source First Affiliated Hospital of Zhejiang University
Contact Shaohua Hu
Phone 086-13957162903
Email dorhushaohua@zju.edu.cn
Status Recruiting
Phase N/A
Start date November 1, 2021
Completion date December 31, 2026

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