Published in:
Open Access
01-12-2007 | Short report
Temporomandibular disorder is associated with a serotonin transporter gene polymorphism in the Japanese population
Authors:
Kiyomi Ojima, Nagaoki Watanabe, Naoko Narita, Masaaki Narita
Published in:
BioPsychoSocial Medicine
|
Issue 1/2007
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Abstract
Aims
Recent genetic studies have linked serotonin-related genetic polymorphisms with diverse disorders characterized by functional somatic symptoms, including chronic fatigue syndrome, irritable bowel syndrome, and premenstrual dysphoric disorder.
Methods
We investigated three serotonin-related genetic polymorphisms by screening genomic DNA of 36 temporomandibular disorder (TMD) patients.
Results
A significant increase of longer alleles (l and xl) was found in the TMD patients compared to the controls both by the genotype-wise and the allele-wise analyses (both p < 0.01 by χ2 test and Fisher's exact test).
Conclusion
Genetic factors that involve the serotonergic system may play a role in the pathogenesis of TMD.