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Genetic Polymorphism of MDM2 SNP309 in Patients with Helicobacter Pylori-Associated Gastritis

  • Tongtawee, Taweesak (Department of Surgery, Suranaree University of Technology) ;
  • Dechsukhum, Chavaboon (Pathological Unit, Institute of Medicine, Suranaree University of Technology) ;
  • Leeanansaksiri, Wilairat (Parasite Research Unit and Institute of Science, Suranaree University of Technology) ;
  • Kaewpitoon, Soraya (Family Medicine and Community Medicine, Suranaree University of Technology) ;
  • Kaewpitoon, Natthawut (Parasite Research Unit and Institute of Science, Suranaree University of Technology) ;
  • Loyd, Ryan A (Family Medicine and Community Medicine, Suranaree University of Technology) ;
  • Matrakool, Likit (Department of Surgery, Suranaree University of Technology) ;
  • Panpimanmas, Sukij (Department of Surgery, Suranaree University of Technology)
  • Published : 2015.11.04

Abstract

Background: Helicobacter pylori plays an important role in gastric cancer, which has a relatively low inciduence in Thailand. MDM2 is a major negative regulator of p53, the key tumor suppressor involved in tumorigenesis of the majority of human cancers. Whether its expression might explain the relative lack of gastric cancer in Thailand was assessed here. Materials and Methods: This single-center study was conducted in the northeast region of Thailand. Gastric mucosa from 100 patients with Helicobacter pylori associated gastritis was analyzed for MDM2 SNP309 using real-time PCR hybridization (light-cycler) probes. Results: In the total 100 Helicobacter pylori associated gastritis cases the incidence of SNP 309 T/T homozygous was 78 % with SNP309 G/T heterozygous found in 19% and SNP309 G/G homozygous in 3%. The result show SNP 309 T/T and SNP 309 G/T to be rather common in the Thai population. Conclusions: Our study indicates that the MDM2 SNP309 G/G homozygous genotype might be a risk factor for gastric cancer in Thailand and the fact that it is infrequent could explain to some extent the low incidence of gastric cancer in the Thai population.

Keywords

MDM2 SNIP 309;Helicobacter pylori;gastric cancer

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