title: The gastric microenvironment in populations at high risk to stomach cancer.
abstract: The gastric juice of patients with atrophic gastritis from the high-risk gastric cancer region of Nariño, Colombia, was analyzed for nitrate, nitrite, and thiocyanate content. Patients whose gastric juice pH is greater than 5 have significant elevation of nitrite values. The possible role of nitrite in gastric carcinogenesis is discussed.
mesh_terms: D000328:Adult; D000368:Aged; D003105:Colombia; D005260:Female; D005750:Gastric Juice / Q000032:analysis*; D005756:Gastritis / Q000150:complications; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D008875:Middle Aged; D009566:Nitrates / Q000032:analysis; D009573:Nitrites / Q000032:analysis; D011230:Precancerous Conditions / Q000032:analysis*; D012306:Risk; D013274:Stomach Neoplasms / Q000032:analysis* / Q000453:epidemiology / Q000209:etiology
chemical_list: D009566:Nitrates; D009573:Nitrites