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esophogeal cancer

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https://www.readbyqxmd.com/read/9276639/evidence-for-cytochrome-p450-2a6-and-3a4-as-major-catalysts-for-n-nitrosonornicotine-alpha-hydroxylation-by-human-liver-microsomes
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C J Patten, T J Smith, M J Friesen, R E Tynes, C S Yang, S E Murphy
The tobacco specific carcinogen N'-nitrosonornicotine (NNN), is believed to be a causative agent for esophageal cancer in smokers. NNN requires metabolic activation to exert its carcinogenic potential. Metabolism occurs through cytochrome P450 (P450) catalyzed 2'- and 5'-hydroxylation, which generates unstable metabolites that decompose to 4-hydroxy-1-(3-pyridyl)-1-butanone ('keto alcohol') and 4-hydroxy-4-(3-pyridyl)butanal, respectively. The latter cyclyzes to 5-(3-pyridyl)-2-hydroxytetrahydrofuran ('lactol')...
August 1997: Carcinogenesis
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