| 3977942 |
Dahl AR, Brezinski DA: Inhibition of rabbit nasal and hepatic cytochrome P-450-dependent hexamethylphosphoramide (HMPA) N-demethylase by methylenedioxyphenyl compounds. Biochem Pharmacol. 1985 Mar 1;34(5):631-6.
Eighteen methylenedioxyphenyl (MDP) compounds, including some commonly inhaled by people, were tested for the ability to inhibit rabbit nasal microsomal cytochrome P-450-dependent hexamethylphosphoramide (HMPA) N-demethylase. For comparison, liver microsomes were also used. Nasal cytochrome P-450 from rabbits metabolized MDP compounds to form cytochrome P-450-metabolite (P-450-MI) complexes as indicated by difference spectra in the Soret region. Several of the MDP compounds were potent inhibitors of nasal P-450-dependent N-demethylase. If inhibition of nasal P-450 also occurs in vivo after inhibiting MDP compounds are inhaled, the metabolism of concurrently or subsequently inhaled compounds may be altered. |
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