HELICOBACTER PYLORI AND N-NITROSO COMPOUNDS

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The objective of this project is to determine whether or not ammonia generated by Helicobacter pylori urease contributes to the formation of nitrate and N-nitroso compounds. A total of 20 patients infected with Helicobacter pylori will be recruited for the study. Study subjects will be given an oral dose of N-urea before and after receiving anti-H. pylori triple therapy. The concentration of N-nitrate and N-nitrosoproline will be measured in a 24 hour urine specimen on each occasion. A significant decrease of the urinary concentration of these compounds is hypothesized after clearance of the infection.