Monoamine oxidases catalyse the oxidative degradation of biogenic amines including neurotransmitters such as noradrenaline, dopamine, and 5-hydroxytryptamine (5-HT). Three groups have reported positive associations of the monoamine oxidase A (MAOA) gene with bipolar affective disorder although other
Study of a possible role of the monoamine oxidase A (MAOA) gene in paranoid schizophrenia among a Chinese population
β Scribed by Yuhui Sun; Jiexu Zhang; Yanbo Yuan; Xin Yu; Yan Shen; Qi Xu
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 235 KB
- Volume
- 159B
- Category
- Article
- ISSN
- 1552-4841
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β¦ Synopsis
Abstract
Monoamine oxidase A (MAOA) is the enzyme responsible for degradation of several monoamines, such as dopamine and serotonin that are considered as being two of the most important neurotransmitters involved in the pathophysiology of schizophrenia. To study a possible role of the MAOA gene in conferring susceptibility to schizophrenia, the present study genotyped the variable number of tandem repeat (VNTR) polymorphism and 41 SNPs across this gene among 555 unrelated patients with paranoid schizophrenia and 567 unrelated healthy controls. Quantitative realβtime PCR analysis was employed to quantify expression of MAOA mRNA in 73 drugβfree patients. While none of these genotyped DNA markers showed allelic association with paranoid schizophrenia, haplotypic association was found for the VNTRβrs6323, VNTRβrs1137070, and VNTRβrs6323βrs1137070 haplotypes in female subjects. Nevertheless, no significant change of the expression of MAOA mRNA was detected in either female or male patients with paranoid schizophrenia. Our study suggests that the interaction between genetic variants within the MAOA gene may contribute to an increased risk of paranoid schizophrenia, but the precise mechanism needs further investigation. Β© 2011 Wiley Periodicals, Inc.
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