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Lack of Association between Oxytocin Receptor (OXTR) Gene Polymorphisms and Alexithymia: Evidence from Patients with Obsessive-Compulsive Disorder

Authors
 Min Jung Koh  ;  Wonji Kim  ;  Jee In Kang  ;  Kee Namkoong  ;  Se Joo Kim 
Citation
 PLOS ONE, Vol.10(11) : e0143168, 2015 
Journal Title
 PLOS ONE 
Issue Date
2015
MeSH
Adult ; Affective Symptoms/complications* ; Affective Symptoms/genetics* ; Demography ; Female ; Genetic Association Studies* ; Genetic Predisposition to Disease* ; Haplotypes/genetics ; Humans ; Linkage Disequilibrium/genetics ; Male ; Obsessive-Compulsive Disorder/complications ; Obsessive-Compulsive Disorder/genetics* ; Polymorphism, Single Nucleotide/genetics* ; Quantitative Trait Loci/genetics ; Receptors, Oxytocin/genetics*
Abstract
Oxytocin receptor gene single nucleotide polymorphisms have been associated with structural and functional alterations in brain regions, which involve social-emotional processing. Therefore, oxytocin receptor gene polymorphisms may contribute to individual differences in alexithymia, which is considered to be a dysfunction of emotional processing. The aim of this study was to evaluate the association between oxytocin receptor gene single nucleotide polymorphisms or haplotypes and alexithymia in patients with obsessive-compulsive disorder. We recruited 355 patients with obsessive-compulsive disorder (234 men, 121 women). Alexithymia was measured by using the Toronto Alexithymia Scale. We performed single-marker and haplotype association analyses with eight single nucleotide polymorphisms (rs237885, rs237887, rs2268490, rs4686301, rs2254298, rs13316193, rs53576, and rs2268498) in the oxytocin receptor gene. There were no significant associations between any of the eight single nucleotide polymorphism of the oxytocin receptor gene and alexithymia. In addition, a six-locus haplotype block (rs237885-rs237887-rs2268490-rs4686301-rs2254298-rs13316193) was not significantly associated with alexithymia. These findings suggest that genetic variations in the oxytocin receptor gene may not explain a significant part of alexithymia in patients with obsessive-compulsive disorder.
Files in This Item:
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DOI
10.1371/journal.pone.0143168
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Psychiatry (정신과학교실) > 1. Journal Papers
Yonsei Authors
Kang, Jee In(강지인) ORCID logo https://orcid.org/0000-0002-2818-7183
Kim, Se Joo(김세주) ORCID logo https://orcid.org/0000-0002-5438-8210
Namkoong, Kee(남궁기) ORCID logo https://orcid.org/0000-0003-1400-8057
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/156835
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