Effects of MAOA promoter methylation on susceptibility to paranoid schizophrenia.

Abstract:

:This study was undertaken to analyze DNA methylation profiling at the monoamine oxidase A (MAOA) locus, in order to determine whether abnormal DNA methylation is involved in the development of schizophrenia. We recruited a total of 371 patients with paranoid schizophrenia (199 males and 172 females) and 288 unrelated control subjects (123 males and 165 females) for analysis of DNA methylation. Diagnosis was made based on the Structured Clinical Interview for DSM-VI. Genomic DNA extracted from peripheral blood was chemically modified using bisulfite, and DNA methylation profiles of the MAOA promoter were determined by BSP-sequencing. DNA methylation ratios of individual CpG residues and overall methylation ratios were measured on each subject. The results showed that there was no significant difference in overall DNA methylation ratios between patients and controls either in the female group (P = 0.42) or in the male group (P = 0.24). Of 15 CpG residues that showed significant differences in DNA methylation status between the patient group and the control group in females, eight of which had an increased level and seven, a decreased level, with a combined P value of 1 (df = 160). In male subjects, however, six individual CpG residues showed an increased methylation level with a combined P value of 5.80E-35 (df = 158). In conclusion, abnormalities of DNA methylation at the MAOA promoter may be associated with schizophrenia in males.

journal_name

Hum Genet

journal_title

Human genetics

authors

Chen Y,Zhang J,Zhang L,Shen Y,Xu Q

doi

10.1007/s00439-011-1131-5

subject

Has Abstract

pub_date

2012-07-01 00:00:00

pages

1081-7

issue

7

eissn

0340-6717

issn

1432-1203

journal_volume

131

pub_type

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