title: The interleukin-8-251 AA genotype is associated with angiogenesis in gastric carcinogenesis in Helicobacter pylori-infected Koreans.
abstract: Helicobacter pylori (H. pylori) is an important risk factor of gastric adenocarcinoma. Interleukin (IL)-8 is a potent angiogenic factor and plays an important role in inflammation of gastric mucosa by H. pylori. Host susceptibility may help to predict H. pylori-infected individuals with a higher risk of gastric adenocarcinoma. The aim of this study was to clarify the effect of IL-8 polymorphism on angiogenesis in the process of gastric carcinogenesis in H. pylori-infected Koreans. The IL-8-251A/T polymorphism was genotyped by PCR-RFLP from a total of 395 subjects; 92 normal controls, 87 H. pylori-infected controls, 108 chronic atrophic gastritis and/or intestinal metaplasia and 108 adenocarcinoma. The gastric mucosal concentrations of IL-8, membrane metalloproteinase (MMP)-9, angiopoietin (Ang)-1, and vascular endothelial growth factor (VEGF) were measured by ELISA. MMP-9 concentrations were increased with disease progression. There was significant correlation between MMP-9 and disease progression in AA (r=0.42, p<0.01) and AT genotype (r=0.43, p<0.01). Ang-1 concentrations were increased in AA genotype (r=0.40, p=0.01). However, there was no significant correlation between VEGF and disease progression in AA genotype. In conclusion, IL-8-251 AA genotype may be associated with angiogenesis in gastric carcinogenesis in H. pylori-infected Koreans.
authors.affiliation: Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Republic of Korea.
authors.forename: Ji Hyun
authors.initials: JH
authors.lastname: Song
authors.forename: Sang Gyun
authors.initials: SG
authors.lastname: Kim
authors.forename: Sung-Ae
authors.initials: SA
authors.lastname: Jung
authors.forename: Mi Kyoung
authors.initials: MK
authors.lastname: Lee
authors.forename: Hyun Chae
authors.initials: HC
authors.lastname: Jung
authors.forename: In Sung
authors.initials: IS
authors.lastname: Song
mesh_terms: D000230:Adenocarcinoma / Q000209:etiology / Q000235:genetics / Q000473:pathology*; D000328:Adult; D000368:Aged; D042683:Angiopoietin-1 / Q000378:metabolism; D044466:Asian People / Q000235:genetics; D018450:Disease Progression; D005260:Female; D005753:Gastric Mucosa / Q000378:metabolism; D005757:Gastritis, Atrophic / Q000235:genetics; D020022:Genetic Predisposition to Disease; D016481:Helicobacter Infections / Q000235:genetics / Q000473:pathology*; D016480:Helicobacter pylori; D006801:Humans; D016209:Interleukin-8 / Q000235:genetics*; D007723:Korea; D008297:Male; D020780:Matrix Metalloproteinase 9 / Q000378:metabolism; D008679:Metaplasia / Q000473:pathology; D008875:Middle Aged; D009389:Neovascularization, Pathologic / Q000235:genetics*; D011110:Polymorphism, Genetic; D013274:Stomach Neoplasms / Q000209:etiology / Q000235:genetics / Q000473:pathology*; D042461:Vascular Endothelial Growth Factor A / Q000378:metabolism
chemical_list: C467630:ANGPT1 protein, human; D042683:Angiopoietin-1; D016209:Interleukin-8; C467484:VEGFA protein, human; D042461:Vascular Endothelial Growth Factor A; D020780:Matrix Metalloproteinase 9