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Polymorphisms in oxidative stress-related genes are associated with nasopharyngeal carcinoma susceptibility
Arij Ben Chaaben1, Christina Mariaselvam, Sofiane Salah
1Department of Clinical Biology, Salah Azaiz Institut of Cancer, Tunis, Tunisia; INSERM, U940, Saint-Louis Hospital, Paris, France; Biochemistry Department, ISBAT, Science University of Tunis, Tunisia.
Abstract:
Nasopharyngeal carcinoma (NPC) is a complex multifactorial disorder involving both genetic and environmental factors. Polymorphisms of genes encoding nitric oxide synthase (NOS) and antioxidant glutathione-S transferases (GSTs) have been associated with various tumors. We examined the combined role of NOS3, NOS2 and GST polymorphisms in NPC risk in Tunisians. We found that NOS3−786C allele and −786 CC genotype, NOS3+894T allele and +894 GT+TT genotypes, NOS2−277 G allele and −277 GG genotype, and GSTT1 del/del genotype, are more prevalent in NPC patients as compared to healthy controls. Our results suggest that genetically driven dysfunction in red–ox stress pathway could augment the risk in NPC-susceptible individuals.
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