期刊
IRISH JOURNAL OF MEDICAL SCIENCE
卷 192, 期 2, 页码 775-783出版社
SPRINGER LONDON LTD
DOI: 10.1007/s11845-022-03030-w
关键词
Bipolar disorder; DNA methylation; PCR-RFLP; qMS-PCR; Schizophrenia; SOCS-1
This study investigated the methylation levels of the SOCS-1 gene in patients with schizophrenia (SCZ) and bipolar disorder (BD), and found that these levels were significantly lower in patients compared to the control group. The study also found a correlation between the SOCS-1 gene polymorphism and clinical manifestations in BD patients.
Background We aimed to investigate the quantitative detection of methylated suppressor of cytokine signaling-1 (SOCS-1) in schizophrenia (SCZ) and bipolar disorder (BD), considering SOCS-1 -1478CA/del polymorphism and clinical parameters. Methods Our research is a case-control study in which 114 patients with SCZ, 86 patients with BD, and 80 volunteers as a healthy group participated. Bisulfite-converted DNA samples were analyzed using the real-time quantitative methylation-specific PCR (qMS-PCR) method to measure the methylation level of the SOCS-1 gene. In addition, SOCS-1 -1478CA/del gene polymorphism was analyzed with the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Results When the SOCS-1 promoter methylation levels of SCZ and BD patients were compared with the control group, the methylation levels of SCZ and BD were significantly lower than the control group. An earlier age of illness onset was significantly related to the SOCS-1 promoter hypermethylation in DNA samples of SCZ patients. Again, SOCS-1 promoter hypermethylation was significantly associated with the higher Young Mania Rating Scale (YMRS) score in BD patients. While the SOCS-1 CA/CA genotype frequency was significantly higher in the control group than in the BD group, the del/del genotype was significantly related to a higher frequency of rapid cycling and a lower frequency of family history in the BD patient group. Conclusion In summary, the methylated SOCS-1 quantity in DNA samples of SCZ and BD patients were significantly lower than in control samples. Whereas the SOCS-1 -1478CA/del polymorphism was not related to SCZ, it may be associated with the BD.
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