Table 2

Glucuronidation activity towards S-(−)-nicotine and S-(−)-cotinine in liver microsomes prepared from eight different species

SpeciesS-(−)-NicotineN1-glucuronideS-(−)-CotinineN1-glucuronide
V pmol/min/mg protein
Human94.6  ± 6.419.9 ± 1.1
Monkey
Rhesus9.97  ± 3.81N.D.
Cynomolgus6.84  ± 2.04tr
MinipigYucatan2.50  ± 0.42N.D.
DogBeagleN.D.N.D.
RabbitNew Zealand Whitetrtr
MouseCD1N.D.N.D.
Guinea pigDunken-Hartley3.91  ± 0.13tr
Rat
Fischer 344N.D.N.D.
WistarN.D.N.D.
Sprague-Dawley2-150 N.D.N.D.
  • N.D., below the limit of detection (1.5 pmol/min/mg protein for each N-glucuronide); tr, below the limit of quantification (2.0 pmol/min/mg protein for each N-glucuronide); V, UGT activity.

  • 2-150  Untreated or chronically treated with phenobarbital, 3-methylcholanthrene, dexamethasone, or β-naphthoflavone.