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Strategy for CYP3A Induction Risk Assessment from Preclinical Signal to Human: a Case Example of a Late-Stage Discovery Compound. Pharm Res 2017; 34:2403-2414. [DOI: 10.1007/s11095-017-2246-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 08/08/2017] [Indexed: 01/09/2023]
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2
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Haarhoff ZE, Kramer MA, Zvyaga TA, Zhang J, Bhutani P, Subramanian M, Rodrigues AD. Comprehensive evaluation of liver microsomal cytochrome P450 3A (CYP3A) inhibition: comparison of cynomolgus monkey and human. Xenobiotica 2016; 47:470-478. [DOI: 10.1080/00498254.2016.1203042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | | | | | - Jun Zhang
- Bristol-Myers Squibb, Wallingford, CT, USA,
| | - Priyadeep Bhutani
- Biocon Bristol-Myers Squibb Research and Development Center, Syngene International Limited, Bangalore, Karnataka, India
| | - Murali Subramanian
- Biocon Bristol-Myers Squibb Research and Development Center, Syngene International Limited, Bangalore, Karnataka, India
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3
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Kosugi Y, Takahashi J. Species differences and substrate specificity of CYP3A heteroactivation by efavirenz. Xenobiotica 2014; 45:345-52. [DOI: 10.3109/00498254.2014.981610] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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4
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Suenderhauf C, Tuffin G, Lorentsen H, Grimm HP, Flament C, Parrott N. Pharmacokinetics of Paracetamol in Göttingen Minipigs: In Vivo Studies and Modeling to Elucidate Physiological Determinants of Absorption. Pharm Res 2014; 31:2696-707. [DOI: 10.1007/s11095-014-1367-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 03/21/2014] [Indexed: 12/11/2022]
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Kanazu T, Sato N, Kadono K, Touchi A, Takeda Y, Yamaguchi Y, Baba T. Investigation of drug-drug interaction via mechanism-based inhibition of cytochrome P450 3A by macrolides in dexamethasone-treated female rats. Biopharm Drug Dispos 2012; 33:195-206. [DOI: 10.1002/bdd.1785] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2011] [Revised: 02/21/2012] [Accepted: 03/20/2012] [Indexed: 11/09/2022]
Affiliation(s)
- Takushi Kanazu
- Drug Metabolism and Pharmacokinetics, Drug Developmental Research Laboratories; Shionogi & Co., Ltd; Toyonaka; Osaka; Japan
| | - Norihito Sato
- Drug Metabolism and Pharmacokinetics, Drug Developmental Research Laboratories; Shionogi & Co., Ltd; Toyonaka; Osaka; Japan
| | - Kyoko Kadono
- Drug Metabolism and Pharmacokinetics, Drug Developmental Research Laboratories; Shionogi & Co., Ltd; Toyonaka; Osaka; Japan
| | - Akira Touchi
- Drug Metabolism and Pharmacokinetics, Drug Developmental Research Laboratories; Shionogi & Co., Ltd; Toyonaka; Osaka; Japan
| | - Yuri Takeda
- Drug Metabolism and Pharmacokinetics, Drug Developmental Research Laboratories; Shionogi & Co., Ltd; Toyonaka; Osaka; Japan
| | - Yoshitaka Yamaguchi
- Drug Metabolism and Pharmacokinetics, Drug Developmental Research Laboratories; Shionogi & Co., Ltd; Toyonaka; Osaka; Japan
| | - Takahiko Baba
- Drug Metabolism and Pharmacokinetics, Drug Developmental Research Laboratories; Shionogi & Co., Ltd; Toyonaka; Osaka; Japan
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Komura H, Iwaki M. In vitro and in vivo small intestinal metabolism of CYP3A and UGT substrates in preclinical animals species and humans: species differences. Drug Metab Rev 2011; 43:476-98. [PMID: 21859377 DOI: 10.3109/03602532.2011.597401] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Intestinal first-pass metabolism has a great impact on the bioavailability of cytochrome P450 3A4 (CYP3A) and/or uridine 5'-diphosphate (UDP)-glucoronosyltranferase (UGT) substrates in humans. In vitro and in vivo intestinal metabolism studies are essential for clarifying pharmacokinetics in animal species and for predicting the effects of human intestinal metabolism. We review species differences in intestinal metabolism both in vitro and in vivo. Based on mRNA expression levels, the major intestinal CYP3A isoform is CYP3A4 for humans, CYP3A4 (3A8) for monkeys, CYP3A9 for rats, cyp3a13 for mice, and CYP3A12 for dogs. Additionally, the intestinal-specific UGT would be UGT1A10 for humans, UGT1A8 for monkeys, and UGT1A7 for rats. In vitro and in vivo intestinal metabolism of CYP3A substrates were larger in monkeys than in humans, although a correlation in intestinal availability between monkeys and humans has been reported. Little information is available regarding species differences in in vitro and in vivo UGT activities; however, UGT-mediated in vivo intestinal metabolism has been demonstrated for raloxifene in humans and for baicalein in rats. Further assessment of intestinal metabolism, particularly for UGT substrates, is required to clarify the entire picture of species differences.
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Affiliation(s)
- Hiroshi Komura
- Drug Metabolism and Pharmacokinetics Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Osaka, Japan.
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Helms CM, Grant KA. The effect of age on the discriminative stimulus effects of ethanol and its GABA(A) receptor mediation in cynomolgus monkeys. Psychopharmacology (Berl) 2011; 216:333-43. [PMID: 21340471 PMCID: PMC3134136 DOI: 10.1007/s00213-011-2219-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Accepted: 02/05/2011] [Indexed: 02/07/2023]
Abstract
RATIONALE Excessive alcohol consumption is less common among aged compared to young adults, with aged adults showing greater sensitivity to many behavioral effects of ethanol. OBJECTIVES This study compared the discriminative stimulus effects of ethanol in young and middle-aged adult cynomolgus monkeys (Macaca fascicularis) and its γ-aminobutyric acid (GABA)(A) receptor mediation. METHODS Two male and two female monkeys trained to discriminate ethanol (1.0 g/kg, i.g.; 60-min pre-treatment interval) from water at 5-6 years of age (Grant et al. in Psychopharmacology 152:181-188, 2000) were re-trained in the current study more than a decade later (19.3 ± 1.0 years of age) for a within-subjects comparison. Also, four experimentally naïve middle-aged (mean ± SEM, 17.0 ± 1.5 years of age) female monkeys were trained to discriminate ethanol for between-subjects comparison with published data from young adult naïve monkeys. RESULTS Two of the naïve middle-aged monkeys attained criterion performance, with weak stimulus control and few discrimination tests, despite greater blood-ethanol concentration 60 min after 1.0 g/kg ethanol in middle-aged compared to young adult female monkeys (Green et al. in Alcohol Clin Exp Res 23:611-616, 1999). The efficacy of the GABA(A) receptor positive modulators pentobarbital, midazolam, allopregnanolone, pregnanolone, and androsterone to substitute for the discriminative stimulus effects of 1.0 g/kg ethanol was maintained from young adulthood to middle age. CONCLUSIONS The data suggest that 1.0 g/kg ethanol is a weak discriminative stimulus in naive middle-aged monkeys. Nevertheless, the GABA(A) receptor mechanisms mediating the discriminative stimulus effects of ethanol, when learned as a young adult, appear stable across one third of the primate lifespan.
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Affiliation(s)
- Christa M Helms
- Division of Neuroscience, Oregon National Primate Research Center, Oregon Health & Science University, 505 NW 185th Avenue, Beaverton, OR 97006-6448, USA.
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8
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Ohtsuka T, Yoshikawa T, Kozakai K, Tsuneto Y, Uno Y, Utoh M, Yamazaki H, Kume T. Alprazolam as an In Vivo Probe for Studying Induction of CYP3A in Cynomolgus Monkeys. Drug Metab Dispos 2010; 38:1806-13. [DOI: 10.1124/dmd.110.032656] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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9
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Tang C, Prueksaritanont T. Use of in vivo animal models to assess pharmacokinetic drug-drug interactions. Pharm Res 2010; 27:1772-87. [PMID: 20428930 DOI: 10.1007/s11095-010-0157-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2010] [Accepted: 04/08/2010] [Indexed: 12/31/2022]
Abstract
Animal models are used commonly in various stages of drug discovery and development to aid in the prospective assessment of drug-drug interaction (DDI) potential and the understanding of the underlying mechanism for DDI of a drug candidate. In vivo assessments in an appropriate animal model can be very valuable, when used in combination with in vitro systems, to help verify in vivo relevance of the in vitro animal-based results, and thus substantiate the extrapolation of in vitro human data to clinical outcomes. From a pharmacokinetic standpoint, a key consideration for rational selection of an animal model is based on broad similarities to humans in important physiological and biochemical parameters governing drug absorption, distribution, metabolism or excretion (ADME) processes in question for both the perpetrator and victim drugs. Equally critical are specific in vitro and/or in vivo experiments to demonstrate those similarities, usually both qualitative and quantitative, in the ADME properties/processes under investigation. In this review, theoretical basis and specific examples are presented to illustrate the utility of the animal models in assessing the potential and understanding the mechanisms of DDIs.
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Affiliation(s)
- Cuyue Tang
- Department of Drug Metabolism and Pharmacokinetics, Merck Research Laboratories, Merck & Co., Inc., WP75A-203, West Point, Pennsylvania 19486, USA
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Takahashi M, Washio T, Suzuki N, Igeta K, Yamashita S. Investigation of the Intestinal Permeability and First-Pass Metabolism of Drugs in Cynomolgus Monkeys Using Single-Pass Intestinal Perfusion. Biol Pharm Bull 2010; 33:111-6. [DOI: 10.1248/bpb.33.111] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Masayuki Takahashi
- Drug Metabolism and Pharmacokinetics Research Laboratories, Daiichi-Sankyo Co., Ltd
| | - Takuo Washio
- Asia Development Department, Daiichi-Sankyo Co., Ltd
| | - Norio Suzuki
- Drug Metabolism and Pharmacokinetics Research Laboratories, Daiichi-Sankyo Co., Ltd
| | - Katsuhiro Igeta
- Drug Metabolism and Pharmacokinetics Research Laboratories, Daiichi-Sankyo Co., Ltd
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11
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Marathe PH, Rodrigues AD. Examination of CYP3A and P-glycoprotein-mediated drug-drug interactions using animal models. Methods Mol Biol 2010; 596:385-403. [PMID: 19949933 DOI: 10.1007/978-1-60761-416-6_17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
With the advent of polytherapy for cancer treatment it has become prudent to minimize, as much as possible, the potential for drug-drug interactions (DDI). Toward this end, the metabolic and transporter pathways involved in the disposition of a drug candidate (phenotyping) and potential for inhibition and induction of drug-metabolizing enzymes and transporters are evaluated in vitro. Such in vitro human data can be made available prior to human dosing and enable in vitro to in vivo-based predictions of clinical outcomes. Despite some success, however, in vitro systems are not dynamic and sometimes fail to predict drug-drug interactions for a variety of reasons. In comparison, relatively less effort has been made to evaluate predictions based on data derived from in vivo animal models. This chapter will attempt to summarize different examples from the literature where animal models have been used to predict cytochrome P450 3A (CYP3A)- and P-glycoprotein-based DDI. When employing data from animal models one needs to be aware of species differences in enzyme- and transporter-activity leading to differences in pharmacokinetics, clearance pathways as well as species differences in selectivity and affinity of probe substrates and inhibitors. Because of these differences, in vivo animal studies alone, cannot be predictive of human DDI. Despite these caveats, the information obtained from validated in vivo animal models may prove useful when used in conjunction with in vitro-in vivo extrapolation methods. Such an integrated data set can be used to select drug candidates with a reduced DDI potential.
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Affiliation(s)
- Punit H Marathe
- Metabolism and Pharmacokinetics, Bristol-Myers Squibb, Pennington, NJ, USA.
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Kim S, Dinchuk JE, Anthony MN, Orcutt T, Zoeckler ME, Sauer MB, Mosure KW, Vuppugalla R, Grace JE, Simmermacher J, Dulac HA, Pizzano J, Sinz M. Evaluation of Cynomolgus Monkey Pregnane X Receptor, Primary Hepatocyte, and in Vivo Pharmacokinetic Changes in Predicting Human CYP3A4 Induction. Drug Metab Dispos 2009; 38:16-24. [DOI: 10.1124/dmd.109.029637] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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13
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Ogasawara A, Negishi I, Kozakai K, Kume T. In Vivo Evaluation of Drug-Drug Interaction via Mechanism-Based Inhibition by Macrolide Antibiotics in Cynomolgus Monkeys. Drug Metab Dispos 2009; 37:2127-36. [DOI: 10.1124/dmd.109.028969] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Zhang H, Wu X, Naraharisetti SB, Chung F, Whittington D, Mirfazaelian A, Unadkat JD. Pregnancy does not increase CYP3A or P-glycoprotein activity in the non-human primate, Macaca nemestrina. J Pharmacol Exp Ther 2009; 330:586-95. [PMID: 19478134 DOI: 10.1124/jpet.109.153569] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Plasma concentrations of protease inhibitors are lower in pregnant women than in nonpregnant women or men. Using nelfinavir as a model protease inhibitor, we have shown that this phenomenon can be reproduced in a representative non-human primate model, Macaca nemestrina (J Pharmacol Exp Ther 329:1016-1022, 2009). Nelfinavir is cleared from the body predominantly by CYP3A metabolism and P-glycoprotein (P-gp) efflux. Therefore, using midazolam (MDZ) as a CYP3A probe and digoxin (DIG) as a P-gp probe, we determined the antepartum (73-118 days) and postpartum (61-130 days) in vivo intestinal and hepatic CYP3A or P-gp activity in the macaque. Although the systemic clearance of MDZ was significantly increased ( approximately 70%) during pregnancy after intra-arterial (IA) administration of the drug ((15)N-labeled MDZ; 40 microg/kg), pregnancy did not affect the oral clearance of the drug administered simultaneously (1 mg/kg p.o.) with the IA dose. In vitro studies in hepatic and intestinal S-9 fractions indicated no effect of pregnancy on CYP3A activity or protein expression in the small intestine or liver. In contrast, neither the oral (100 microg/kg) nor the IA (10 microg/kg) clearance of DIG was significantly altered by pregnancy, indicating no effect of pregnancy on P-gp activity. Assuming that MDZ and DIG are selective substrates of the macaque CYP3A enzymes and P-gp, respectively, these results suggest that factors other than increased CYP3A or P-gp activity contribute to the increased clearance of protease inhibitors during M. nemestrina pregnancy.
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Affiliation(s)
- Huixia Zhang
- Department of Pharmaceutics, University of Washington, Seattle, Washington 98195, USA
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Zhang H, Wu X, Chung F, Naraharisetti SB, Whittington D, Mirfazaelian A, Unadkat JD. As in humans, pregnancy increases the clearance of the protease inhibitor nelfinavir in the nonhuman primate Macaca nemestrina. J Pharmacol Exp Ther 2009; 329:1016-22. [PMID: 19293388 DOI: 10.1124/jpet.109.151746] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The apparent oral clearance of protease inhibitors (PIs) is increased in pregnant women. Although this phenomenon is reproduced in the mouse, because of the multiplicity of mouse cytochrome P450 isoforms, lack of information on their substrate and inhibitor selectivity, and lack of reagents (e.g., antibodies, purified protein), it is difficult to study the mechanistic basis of this phenomenon in this animal model. To investigate the mechanistic basis of this phenomenon in a more representative model, the nonhuman primate, we first determined whether this phenomenon could be reproduced in Macaca nemestrina, using nelfinavir as a model PI. Consistent with the human and mouse studies, we found that the apparent oral clearance of nelfinavir (NFV) in the macaques was significantly increased (3.14-fold) antepartum (n = 3) versus postpartum (n = 4). This increased apparent oral clearance was a result of an increased systemic clearance (1.9-fold) and a decreased bioavailability (approximately 45%) during pregnancy. In vitro, pregnancy significantly enhanced the rate of NFV depletion in hepatic, but not intestinal S-9 fractions. Human CYP3A inhibitors erythromycin (0.5 mM), ketoconazole (0.5 microM), and troleandomycin (0.01-1 mM), but not the CYP2C inhibitor, sulfaphenazole (3 microM), significantly inhibited the depletion of NFV in hepatic S-9 fractions and expressed rhesus CYP3A64 enzyme. Based on these data, we conclude that increased hepatic activity of NFV-metabolizing enzymes (perhaps CYP3A enzymes) results in increased clearance of PIs during pregnancy in the macaques. The M. nemestrina should be further investigated as a model to study the mechanisms by which the clearance of PIs is increased during pregnancy.
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Affiliation(s)
- Huixia Zhang
- Department of Pharmaceutics, University of Washington, Box 357610, Seattle, WA 98195, USA
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Ogasawara A, Utoh M, Nii K, Ueda A, Yoshikawa T, Kume T, Fukuzaki K. Effect of Oral Ketoconazole on Oral and Intravenous Pharmacokinetics of Simvastatin and Its Acid in Cynomolgus Monkeys. Drug Metab Dispos 2008; 37:122-8. [DOI: 10.1124/dmd.108.022574] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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17
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Sekiguchi N, Kato M, Takada M, Watanabe H, Higashida A, Sakai S, Ishigai M, Aso Y. In vivoapproach for the evaluation of mechanism-based inhibition of cytochrome P450 3A in rats. Xenobiotica 2008; 38:368-81. [DOI: 10.1080/00498250701851891] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Mandlekar SV, Rose AV, Cornelius G, Sleczka B, Caporuscio C, Wang J, Marathe PH. Development of anin vivorat screen model to predict pharmacokinetic interactions of CYP3A4 substrates. Xenobiotica 2008; 37:923-42. [PMID: 17896322 DOI: 10.1080/00498250701570269] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
With the advent of polytherapy, drug interactions have become a common clinical problem. Although in vitro data are routinely used for the prediction of drug interactions, in vitro systems are not dynamic and sometimes fail to predict drug interactions. We sought to use the rat as an in vivo screening model to predict pharmacokinetic interactions with ketoconazole. The pharmacokinetic studies were conducted following an oral dose of CYP3A substrates and an optimized oral regimen of ketoconazole. In vitro reaction phenotyping was conducted using individual human and rat cDNA-expressed CYP enzymes and human or rat liver microsomes in the presence of ketoconazole. The in vitro experiments indicated that the test compounds were largely metabolized by CYP3A in both human and rat. The compounds could be rank-ordered with respect to the increase in C(max) and area under the curve (AUC) values relative to midazolam in the presence of ketoconazole. The degree of pharmacokinetic interaction with ketoconazole was dependent, in part, upon their in vitro metabolism in the presence of rat CYP3A1/3A2 and in rat and human microsomes, co-incubated with ketoconazole, and on their fraction metabolized (f(m)) in the rat relative to other disposition pathways. Based on the rank-order of interaction, the compounds could be prioritized for further preclinical development.
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Affiliation(s)
- S V Mandlekar
- Pharmaceutical Candidate Optimization, Bristol-Myers Squibb Pharmaceutical Research Institute, Princeton, NJ, USA
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Komura H, Iwaki M. Species Differences in In Vitro and In Vivo Small Intestinal Metabolism of CYP3A Substrates. J Pharm Sci 2008; 97:1775-800. [PMID: 17853429 DOI: 10.1002/jps.21121] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Intestinal first-pass metabolism has a great impact on the bioavailability of CYP3A substrates in humans, and the in vivo impact has quantitatively been evaluated using CYP3A inhibitors or inducers. In vitro and in vivo preclinical investigations for intestinal metabolism are essential in clarifying pharmacokinetic behavior in animal species and predicting the effect of intestinal metabolism in the human. In this review, we will discuss species differences in intestinal CYP3A enzymes, and CYP3A-mdediated intestinal elimination. Identical CYP3A4 enzyme is expressed in human intestine and liver, but different CYP3A enzymes in both tissues of the mouse and rat are found, that is, respective intestinal enzyme is considered as cyp3a13 and CYP3A62. There is little information on CYP3A enzymes in the monkey and dog intestine, unlike the liver. In vitro metabolic activities of midazolam and nisoldipine are higher in the human and monkey than in the rat. In vivo assessment of cyclosporine, midazolam, nifedipine, tacrolimus, and verapamil has been reported in various species (monkey, rat, mouse, and/or dog) including the human. For midazolam, the monkey shows significant in vivo intestinal metabolism, as evidenced in the human. The monkey might be an appropriate animal model for evaluating small intestinal first-pass metabolism of CYP3A substrates.
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Affiliation(s)
- Hiroshi Komura
- Department of Pharmacy, Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
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20
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Tang C, Carr BA, Poignant F, Ma B, Polsky-Fisher SL, Kuo Y, Strong-Basalyga K, Norcross A, Richards K, Eisenhandler R, Carlini EJ, Di Marco CN, Kuduk SD, Yu NX, Raab CE, Rushmore T, Frederick CB, Bock MG, Prueksaritanont T. CYP2C75-Involved Autoinduction of Metabolism in Rhesus Monkeys of Methyl 3-Chloro-3′-fluoro-4′-{(1R)-1-[({1-[(trifluoroacetyl)amino]cyclopropyl}carbonyl)amino]ethyl}-1,1′-biphenyl-2-carboxylate (MK-0686), a Bradykinin B1 Receptor Antagonist. J Pharmacol Exp Ther 2008; 325:935-46. [DOI: 10.1124/jpet.107.136044] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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21
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Nishimura T, Amano N, Kubo Y, Ono M, Kato Y, Fujita H, Kimura Y, Tsuji A. Asymmetric Intestinal First-Pass Metabolism Causes Minimal Oral Bioavailability of Midazolam in Cynomolgus Monkey. Drug Metab Dispos 2007; 35:1275-84. [PMID: 17470527 DOI: 10.1124/dmd.106.013037] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Oral bioavailability of some drugs is substantially lower in cynomolgus monkeys than in various other species, including humans. In the present study, midazolam was used as a model drug to investigate the reason for the lower bioavailability in these monkeys. The bioavailability of midazolam after oral administration was minimal in monkeys and rats, being only 2.1 and 1.1%, respectively. In monkeys, this low bioavailability could not be explained simply in terms of a hepatic first-pass effect. To examine the roles of intestinal metabolism and transport, we evaluated apical-to-basal and basal-to-apical transport of midazolam, and the formation of metabolites in small intestinal tissues using an Ussing-type chamber. The values of mucosal extraction ratio were estimated to be 0.97, 0.93, and 0.89 during apical-to-basal transport in the upper, middle, and lower small intestine of monkeys, respectively, whereas the corresponding values for rats were close to zero, indicating that extensive metabolism of midazolam occurs, particularly in the upper region of the small intestine in monkeys, but not rats. Interestingly, formation of the metabolites was much greater during transport in the apical-to-basal direction than in the basal-to-apical direction, and this could be well explained by a mathematical model based on the assumption that extensive metabolism is associated with the uptake process of midazolam from the apical cell surface. Thus, we conclude that an asymmetric distribution of metabolic activity in the small intestine, leading to extensive metabolism during uptake from the apical cell surface, accounts for the minimal oral bioavailability of midazolam in cynomolgus monkeys.
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Affiliation(s)
- Tomohiro Nishimura
- Division of Pharmaceutical Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Japan
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Tang C, Fang Y, Booth-Genthe C, Kuo Y, Kuduk SD, Rushmore TH, Carr BA. Diclofenac hydroxylation in monkeys: Efficiency, regioselectivity, and response to inhibitors. Biochem Pharmacol 2007; 73:880-90. [PMID: 17223083 DOI: 10.1016/j.bcp.2006.11.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2006] [Revised: 11/19/2006] [Accepted: 11/21/2006] [Indexed: 10/23/2022]
Abstract
The catalytic efficiency, regioselectivity, and response to chemical inhibitors of diclofenac (DF) hydroxylation in three Old World monkey liver microsomes (rhesus, cynomolgus, and African green monkey) are different from those determined with human liver microsomes. In contrast to the high affinity-high capacity (low Km-high Vmax) characteristics of DF 4'-hydroxylation in humans, this reaction proceeded in all monkey species with catalytic efficiencies >20-fold lower. However, DF 5-hydroxylation, a negligible reaction in human liver microsomes, was kinetically favored in monkeys mainly due to the increased Vmax values. Chemical inhibitors (reversible or mechanism-based) selective to human CYP3A4 and CYP2C9 failed to differentiate monkey orthologs involved in DF hydroxylation. Immunoinhibition studies with monoclonal antibodies against human CYPs revealed the major contribution of CYP2C and CYP3A to 4'- and to 5-hydroxylation, respectively, in rhesus and cynomolgus liver microsomes. However, in African green monkeys, in addition to CYP2C, CYP3A also appeared to be involved in 4'-hydroxylation. Further studies with recombinant rhesus and African green monkey CYP2C and CYP3A enzymes (rhesus CYP2C75, 2C74, and 3A64; African green monkey CYP2C9agm and CYP3A4agm) confirmed the major role of CYP enzymes of these two subfamilies in DF 4'- and 5-hydroxylation. Clearly, while monkey CYP2C and 3A enzymes retain the same substrate selectivity towards DF hydroxylation as their human orthologs, their altered catalytic efficiency and response to chemical inhibitors may indicate different structural features of active sites as opposed to human orthologs.
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Affiliation(s)
- Cuyue Tang
- Departments of Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, USA.
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Zhang H, Zhang D, Li W, Yao M, D'Arienzo C, Li YX, Ewing WR, Gu Z, Zhu Y, Murugesan N, Shyu WC, Humphreys WG. Reduction of Site-Specific CYP3A-Mediated Metabolism for Dual Angiotensin and Endothelin Receptor Antagonists in Various in Vitro Systems and in Cynomolgus Monkeys. Drug Metab Dispos 2007; 35:795-805. [PMID: 17303626 DOI: 10.1124/dmd.106.012781] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
2-{Butyryl-[2'-(4,5-dimethyl-isoxazol-3-ylsulfamoyl)-biphenyl-4-ylmethyl]-amino}-N-isopropyl-3-methyl-butyramide (BMS-1) is a potent dual acting angiotensin-1 and endothelin-A receptor antagonist. The compound was subject to rapid metabolic clearance in monkey and human liver microsomes and exhibited low systemic exposure and marked interanimal variability in cynomolgus monkeys after p.o. administration. The variability pattern was identical to that of midazolam given p.o. in the same monkeys, as measured by area under the curve and Cmax values, suggesting that CYP3A-mediated metabolism might play a role in the rapid clearance and observed interanimal variability. Subsequent in vitro metabolism studies using human liver microsomes and cDNA-expressed human cytochrome P450 (P450) enzymes revealed that BMS-1 was a CYP3A4 substrate and was not metabolized by other human P450 enzymes. Mass spectral and NMR analyses of key metabolites led to the identification of the dimethyl isoxazole group as a major metabolic soft spot for BMS-1. Replacement of the 4-methyl group on the isoxazole ring with halogens not only improved overall metabolic stability but also decreased CYP3A-mediated hydroxylation of the isoxazole 5-methyl group. As exemplified by 2-{butyryl-[2'-(4-fluoro-5-methyl-isoxazol-3-ylsulfamoyl)-biphenyl-4-ylmethyl]-amino}-N-isopropyl-3-methyl-butyramide (BMS-3), a fluorinated analog of BMS-1, the structural modification resulted in an increase in the systemic exposure relative to previous analogs and a dramatic reduction in interanimal variability in the monkeys after p.o. administration. In addition, BMS-3 could be metabolized by both CYP2C9 and CYP3A4, thus avoiding the reliance on a single P450 enzyme for metabolic clearance. Integration of results obtained from in vitro metabolism studies and in vivo pharmacokinetic evaluations enabled the modulation of site-specific CYP3A-mediated metabolism, yielding analogs with improved overall metabolic profiles.
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Affiliation(s)
- Hongjian Zhang
- Metabolism and Pharmacokinetics, Pharmaceutical Research Institute, Bristol-Myers Squibb Company, P.O. Box 4000, Princeton, NJ 08543, USA.
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Ogasawara A, Kume T, Kazama E. Effect of oral ketoconazole on intestinal first-pass effect of midazolam and fexofenadine in cynomolgus monkeys. Drug Metab Dispos 2006; 35:410-8. [PMID: 17142564 DOI: 10.1124/dmd.106.011288] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Because the expression of drug-metabolizing enzymes and drug efflux transporters has been shown in the intestine, the contribution of this tissue to the first-pass effect has become of significant interest. Consequently, a comprehensive understanding of the absorption barriers in key preclinical species would be useful for the precise characterization of drug candidates. In the present investigation, we evaluated the intestinal first-pass effect of midazolam (MDZ) and fexofenadine (FEX), typical substrates for CYP3A and P-glycoprotein (P-gp), respectively, with ketoconazole (KTZ) as a potent dual CYP3A/P-gp inhibitor in cynomolgus monkeys. When MDZ or FEX was administered i.v. at doses of 0.3 or 1 mg/kg, respectively, the plasma concentration-time profiles were not influenced by p.o. coadministration of KTZ (20 mg/kg). On the other hand, when MDZ or FEX was administered p.o. at doses of 1 or 5 mg/kg, respectively, concomitant with a dose p.o. of KTZ (20 mg/kg), significant increases were observed in the area under the plasma concentration-time curves of MDZ or FEX (22-fold in MDZ and 3-fold in FEX). These findings indicate that both CYP3A and P-gp play a key role in the intestinal barrier and that inhibition of intestinal CYP3A/P-gp activities contributes exclusively toward the drug-drug interactions (DDI) with KTZ. Additionally, the K(i) values of the antifungal agents, KTZ, itraconazole, and fluconazole, for MDZ 1'-hydroxylation in monkey intestinal and liver microsomes were comparable with those in the respective human samples. These results suggest that monkeys may be an appropriate animal species for evaluating the intestinal first-pass effect of p.o. administered drugs and predicting intestinal DDI related to CYP3A4 and P-gp in humans.
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Affiliation(s)
- Akihito Ogasawara
- Exploratory DMPK, Exploratory Toxicology and DMPK Research Laboratories, Tanabe Seiyaku Co., Ltd., 2-2-50, Kawagishi, Toda, Saitama, 335-8505, Japan.
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Prueksaritanont T, Kuo Y, Tang C, Li C, Qiu Y, Lu B, Strong-Basalyga K, Richards K, Carr B, Lin JH. In vitro and in vivo CYP3A64 induction and inhibition studies in rhesus monkeys: a preclinical approach for CYP3A-mediated drug interaction studies. Drug Metab Dispos 2006; 34:1546-55. [PMID: 16782766 DOI: 10.1124/dmd.106.009878] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
In this study, induction and inhibition of rhesus monkey CYP3A64 versus human CYP3A4 were characterized in vitro, and the corresponding pharmacokinetic consequences were evaluated in rhesus monkeys. In monkey hepatocytes, rifampin markedly induced CYP3A64 mRNA (EC50 = 0.5 microM; Emax = 6-fold) and midazolam (MDZ) 1'-hydroxylase activity (EC50 = 0.2 microM; Emax = 2-fold). Compound A (N-[2(R)-hydroxy-1(S)-indanyl-5-[2(S)-(1,1-dimethylethylaminocarbonyl)-4-[(furo[2,3-b]pyridin-5-yl)-methyl]piperazin-1-yl]-4(S)-hydroxy-2(R)-phenylmethylpentanamide), a known potent and mechanism-based inhibitor of CYP3A4, strongly inhibited the formation of 1'-hydroxy MDZ by recombinant CYP3A64 in a concentration- and time-dependent manner (KI = 0.25 microM; k(inact) = 0.4 min(-1)). Similar corresponding results also were obtained with human CYP3A4 in the presence of rifampin or compound A. In rhesus monkeys, MDZ exhibited a relatively high metabolic clearance (primarily via 1'-hydroxylation followed by glucuronidation) and a low hepatic availability (Fh = 16%). Consistent with the induction of hepatic metabolism of a high-clearance compound, pretreatment with rifampin (18 mg/kg p.o. for 5 days) did not significantly affect the i.v. kinetics of MDZ, but caused a pronounced reduction (approximately 10-fold) in the systemic exposure to MDZ and, consequently, its Fh following intrahepatic portal vein administration (i.pv.) of MDZ. A comparable extent of the pharmacokinetic interaction also was obtained after a 1.8 mg/kg rifampin dose. Also consistent with the in vitro CYP3A64 inhibition finding, compound A (6 mg/kg i.v.) markedly increased (10-fold) the i.pv. administered MDZ exposure. At the doses studied, plasma concentrations of rifampin or compound A reached or exceeded their respective in vitro EC50 or KI values. These findings suggest the potential applicability of the in vitro-in vivo relationship approach in rhesus monkeys for studying CYP3A-mediated interactions in humans.
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