Glucuronidation of benzidine and its metabolites by cDNA-expressed human UDP-glucuronosyltransferases and pH stability of glucuronides.

@article{Ciotti1999GlucuronidationOB,
  title={Glucuronidation of benzidine and its metabolites by cDNA-expressed human UDP-glucuronosyltransferases and pH stability of glucuronides.},
  author={Marco Ciotti and Vijaya M. Lakshmi and Nikhil Kumar Basu and Bernard B. Davis and Ida S. Owens and Terry V. Zenser},
  journal={Carcinogenesis},
  year={1999},
  volume={20 10},
  pages={
          1963-9
        }
}
Although glucuronidation is considered a necessary step in aromatic amine-induced bladder cancer, the specific enzymes involved are not known. This study assessed the capacity of five different human recombinant UDP-glucuronosyltransferases expressed in COS-1 cells to glucuronidate benzidine, its metabolites and 4-aminobiphenyl. [(14)C]UDP-glucuronic acid was used as co-substrate. UGT1A1, UGT1A4 and UGT1A9 each metabolized all of the aromatic amines. UGT1A9 exhibited the highest relative rates… 

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