BIOMARKER FOR PSYCHIATRIC AND NEUROLOGICAL DISORDERS

摘要

The purpose of the present invention is to provide: a biomarker for psychiatric and neurological disorders, in particular, a biomarker for diagnosing psychiatric and neurological disorders; and a test kit and test method for psychiatric and neurological disorders. The inventors discovered that there is a significant increase in the concentration of free º immunoglobulin chains and free » immunoglobulin chains in the blood samples from patients with psychiatric and neurological disorders. Consequently, the present invention provides a biomarker for psychiatric and neurological disorders that includes at least one selected from the group consisting of free º immunoglobulin chains, free » immunoglobulin chains, and fragments thereof. Using this biomarker for psychiatric and neurological disorders enables the psychiatric and neurological disorders to be easily tested and diagnosed with the blood samples from the subjects. The biomarker enables more effective tests and diagnoses to be conducted combining inflammatory cytokines in the blood of patients with psychiatric and neurological disorders.