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Published on: March 16, 2017
Endothelial nitric oxide synthase gene polymorphisms are not associated with recurrent aphthous stomatitis
Jumana A Karasneh1, Reza Baszrafshani, Martin Thornhill
1Department of Oral Medicine & Oral Surgery, Dental School, Jordan University of Science & Technology, PO Box 3030, Irbid, Jordan. jumana2003@yahoo.com
Endothelial nitric oxide synthase (eNOS) gene variations are not linked to recurrent aphthous stomatitis (RAS). This suggests different genetic causes for oral ulcers in RAS compared to Behçet's disease (BD).
Area of Science:
- Genetics
- Immunology
- Oral Medicine
Background:
- Recurrent aphthous stomatitis (RAS) is a common oral mucosal disease.
- Oral ulceration is a key feature of Behçet's disease (BD).
- Endothelial nitric oxide synthase (eNOS) gene polymorphisms have been associated with BD.
Purpose of the Study:
- To investigate the association between eNOS gene polymorphisms and RAS.
- To determine if genetic factors underlying BD are also involved in RAS.
Main Methods:
- A case-control study involving 91 RAS patients and 91 healthy controls.
- Genotyping for eNOS -786 and +894 single nucleotide polymorphisms (SNPs) and a VNTR polymorphism.
- Comparison of allele and genotype frequencies using Chi-square analysis.
Main Results:
- No significant differences in allele or genotype frequencies for the studied eNOS polymorphisms were observed between RAS patients and controls.
- The investigated eNOS gene variations are not associated with recurrent aphthous stomatitis.
Conclusions:
- The genetic factors associated with Behçet's disease, specifically eNOS polymorphisms, do not appear to play a role in recurrent aphthous stomatitis.
- The common oral ulceration in RAS and BD may stem from distinct genetic etiologies.
- While eNOS gene polymorphisms are not linked to RAS, nitric oxide's involvement via other pathways, such as inducible nitric oxide synthase (iNOS), remains possible.
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