Abstract
This presentation describes the metabolism of triphenylethylene derivatives, chlorotrianisene (TACE) and tamoxifen by hepatic microsomal enzymes in rat and human. Both compounds appear to exhibit partial agonist/antagonist estrogen activity in the rat. The antiestrogenic activity of triphenylethylenes is thought to involve the interactions of these compounds and/or of their respective metabolites with the estrogen receptor (ER). However, the exact mechanism of their antiestrogenic action, has not been fully elucidated.
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References
Kupfer D, (1985) Role of hepatic monooxygenases in generating estrogenic metabolites from methoxychlor and from its identified contaminants. Mol Pharmacol 27: 115–124
Fisher B, Redmond C, (1991) New perspective on cancer of the contralateral breast: A marker for assessing tamoxifen as a preventive agent. J Nat Cancer Inst 83: 1278–1280
Foster AB, Griggs LJ, Jarman M, vanMaanen JMS, Schulten HR, (1980) Metabolism of tamoxifen by rat liver microsomes: formation of the oxide, a new metabolite. Biochem Pharmacol 29: 1977–1979
Han XL, Liehr JG, (1992) Induction of covalent DNA adducts in rodents by tamoxifen. Cancer Res 52: 1360–1363
Jacolot F, Simon I, Dreano Y, Beaune P, Riche C, Berthou F, (1991) Identification of the cytochrome P-450 IILA family as the enzymes involved in the N- demethylation of tamoxifen in human liver microsomes. Biochem Pharmacol 41: 1911–1919
Jordan VC, Lieberman ME, (1984) Estrogen-stimulated prolacten synthesis in vitro. Mol Pharmacol 26: 279–285
Juedes MJ, Bulger WH, Kupfer D, (1987) Monooxygenase-mediated activation of chlorotrianisene ( TACE) in covalent binding to rat hepatic microsomal proteins. Drug Metab Disp 15: 786–793
Juedes MJ, Kupfer D, (1990) Role of P-450c in the formation of a reactive intermediate of chlorotrianisene ( TACE) by hepatic microsomes from methylcholanthrene-treated rats. Drug Metab Dispos 18: 131–137
Kupfer D, Mani C, Lee CA, Rifkind AB, (1993) Identification of P450 TCDDaa as the catalyst of tamoxifen 4-hydroxylation (TAM-4-OH) induced by 2,3,7,8- tetrachlorodibenzo-p-dioxin and (β-naphthoflavone (BNF) in avian liver. Faseb J (7): Abstract 878, pA1203
Kupfer D, Bulger WH, (1990) Inactivation of the uterine estrogen receptor binding of estradiol during P-450 catalyzed metabolism of chlorotrianisene (TACE). Speculation that TACE antiestrogenic activity involves covalent binding to the estrogen receptor. Febs Lett 261: 59–62
Lyman SD, Jordan VC, (1986) Metabolism of nonsteroidal antiestrogens in estrogen/antiestrogen action and breast cancer therapy. In: Jordan VC, (ed) Estrogen/antiestrogen Action and Breast Cancer. The University of Wisconsi42n Press, Madison, WI. pp 191–219
Lamoureux CH, Feil VJ, (1980) Gas chromatographic and mass spectrometric characterization of impurities in technical methoxychlor. J Assoc Off Anal Chem 63: 1007–1037
Mani C, Kupfer D, (1991) Cytochrome P-450-mediated activation and irreversible binding of the antiestrogen tamoxifen to proteins in rat and human liver: Possible involvement of flavin-containing monooxygenases in tamoxifen activation. Cancer Res 51: 6052-6058
Mani C, Hodgson E, Kupfer D, (1993a) Metabolism of 53the antimammary cancer antiestrogenic agent tamoxifen. II. Flavin-containing monooxygenase-mediated N-oxidation. Drug Metab Disp 21: 657–661
Mani C, Gelboin HV, Park SS, Pearce R, Parkinson A, Kupfer D, (1993b) Metabolism of the antimammary cancer antiestrogenic agent tamoxifen. I. Cytochrome P-450 -catalyzed N-demethylation and 4-hydroxylation. Drug Metab Disp 21: 645–656
McCague R, Seago A, (1986) Aspects of metabolism of tamoxifen by rat liver microsomes. Biochem Pharmacol 35: 827–345
Nakai K, Ward AM, Gannon M, Rifkind AB, (1992) (β-naphthaflavone induction of a cytochrome P-450 arachidonic acid epoxygenase in chick embryo liver distinct from the aryl hydrocarbon hydroxylase and from phenobarbital induced arachidonate epoxygenase. J Biol Chem 267: 19503–19512
Powers CA, Hatala MA, Pagano PJ, (1989) Differential responses of pituitary kallikrein and prolactin to tamoxifen and chlorotrianisene. Mol Cell Endocrinol 66: 93–100
Reunitz PC, Toledo MM, (1981) Chemical and biochemical characteristics of O-demethylation of chlorotrianisene in the rat. Biochem Pharmacol 30: 2203 - 2207
Reunitz PC, Bagley JR, Pape CW, (1984) Some chemical and biochemical aspects of liver microsomal metabolism of tamoxifen. Drug Metab Disp 12: 478–483
Turner MJ III, Fields CE, Everman DB, (1991) Evidence for superoxide formation during hepatic metabolism of tamoxifen. Biochem Pharmacol 41: 1701–1705
White, IN, deMatteis F, Davies A, Smith LL, Crofton-Sleigh C, Venitt S, Hewer A, Phillips DH, (1992) Genotoxic potential of tamoxifen and analogues in female Fischer F344/2 rats, DBA/2 and C57BL/6 mice in human MCL-5 cells. Carcinogenesis 13: 2197–2203
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Kupfer, D. (1995). Metabolism of Antiestrogenic Anti-Cancer Agents by Cytochromne P450 and Flavin-Containing Monooxygenases. Mechanism of Action Involving Metabolites. In: Arinç, E., Schenkman, J.B., Hodgson, E. (eds) Molecular Aspects of Oxidative Drug Metabolizing Enzymes. NATO ASI Series, vol 90. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-79528-2_23
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DOI: https://doi.org/10.1007/978-3-642-79528-2_23
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