Chlorogenic acid prevented a stepwise conversion of plasmid pUC18 DNA, from I-->form II-->form III, induced by 3 mM monochloramine with a half inhibition of 67.4 microM. Chlorogenic acid reacted with monochloramine in a time-dependent manner, and the reaction rate increased with decreasing pH. These results suggest that chlorogenic acid prevents genotoxicity of monochloramine in gastric mucosa.
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Shibata et al. (1999) studied this question.
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