Abstract
Gastric juice and urine samples from consecutive patients who underwent endoscopy for upper GI tract complaints were examined for the presence of mutagens. Patients endoscopically and histologically diagnosed as having either chronic atrophic gastritis (CAG) or gastric cancer (GC) had higher than normal levels of mutagens in their gastric juice and urine. The gastric juice pH of these patients was also elevated and, in the case of the CAG patients, contained detectable levels of nitrites. No correlation was however found between gastric mutagen levels and urinary mutagen excretion in the individuals examined.
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