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Chen J, Du Y, Hou H, Li W, Sun C, Liang F, Wang H. Unveiling the Correlation Between the Membrane Assembly of P-gp and Drug Resistance in Multiple Myeloma Using Super-Resolution Fluorescence Imaging. Anal Chem 2024; 96:11673-11681. [PMID: 38994836 DOI: 10.1021/acs.analchem.4c00093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2024]
Abstract
Drug resistance in multiple myeloma (MM) poses a significant challenge to treatment efficacy, primarily attributed to P-glycoprotein (P-gp) dysfunction. This study delves into the elusive spatial organization of P-gp, aiming to enhance our understanding of its role in MM drug resistance by exploring the intricate relationship between molecular function and spatial arrangement. Employing super-resolution imaging of P-gp with the inhibitor probe Tariquidar-TAMR labeling on MM cell membranes, the research uncovered a more pronounced clustering distribution of P-gp in drug-resistant cells (MM1R) compared to drug-sensitive counterparts (MM1S). Further exploration revealed the clustering distribution of P-gp was heightened as cellular drug resistance increased in hypoxic condition, directly emphasizing the strong correlation between P-gp cluster morphology and drug resistance. Additionally, stable P-gp cluster formation was influenced by cross-linking of membrane carbohydrates, and disrupting these glycoprotein clusters could reduce cellular drug resistance, suggesting that altering distribution patterns of P-gp can modulate drug responsiveness. Finally, dexamethasone (Dex) treatment was revealed to enhance P-gp clustering distribution, particularly in MM1S cells, indicating that change degree in P-gp distribution correlate with the modifiable space of cellular drug responsiveness. This study provides insights into the correlation between P-gp assembly and cellular drug responsiveness, deepening our understanding of functional changes in MM drug resistance and offering valuable perspectives for overcoming this challenge.
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Affiliation(s)
- Junling Chen
- School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - Yuwei Du
- School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - Hao Hou
- School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - WenFeng Li
- School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - Chunyan Sun
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Dadao, Wuhan 430022, China
| | - Feng Liang
- School of Chemistry & Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Street, Wuhan, Hubei 430081, China
| | - Hongda Wang
- State Key Laboratory of Electroanalytical Chemistry, Research Center of Biomembranomics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China
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2
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Bourdin V, Bigot W, Vanjak A, Burlacu R, Lopes A, Champion K, Depond A, Amador-Borrero B, Sene D, Comarmond C, Mouly S. Drug-Drug Interactions Involving Dexamethasone in Clinical Practice: Myth or Reality? J Clin Med 2023; 12:7120. [PMID: 38002732 PMCID: PMC10672071 DOI: 10.3390/jcm12227120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/04/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023] Open
Abstract
Concomitant administration of multiple drugs frequently causes severe pharmacokinetic or pharmacodynamic drug-drug interactions (DDIs) resulting in the possibility of enhanced toxicity and/or treatment failure. The activity of cytochrome P450 (CYP) 3A4 and P-glycoprotein (P-gp), a drug efflux pump sharing localization and substrate affinities with CYP3A4, is a critical determinant of drug clearance, interindividual variability in drug disposition and clinical efficacy, and appears to be involved in the mechanism of numerous clinically relevant DDIs, including those involving dexamethasone. The recent increase in the use of high doses of dexamethasone during the COVID-19 pandemic have emphasized the need for better knowledge of the clinical significance of drug-drug interactions involving dexamethasone in the clinical setting. We therefore aimed to review the already published evidence for various DDIs involving dexamethasone in vitro in cell culture systems and in vivo in animal models and humans.
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Affiliation(s)
- Venceslas Bourdin
- Internal Medicine Department, Département Médico-Universitaire INVICTUS, Lariboisière Hospital, Assistance Publique-Hôpitaux de Paris (APHP).Nord—Université Paris-Cité, 75010 Paris, France; (V.B.); (W.B.); (A.V.); (R.B.); (A.L.); (K.C.); (A.D.); (B.A.-B.); (D.S.); (C.C.)
| | - William Bigot
- Internal Medicine Department, Département Médico-Universitaire INVICTUS, Lariboisière Hospital, Assistance Publique-Hôpitaux de Paris (APHP).Nord—Université Paris-Cité, 75010 Paris, France; (V.B.); (W.B.); (A.V.); (R.B.); (A.L.); (K.C.); (A.D.); (B.A.-B.); (D.S.); (C.C.)
| | - Anthony Vanjak
- Internal Medicine Department, Département Médico-Universitaire INVICTUS, Lariboisière Hospital, Assistance Publique-Hôpitaux de Paris (APHP).Nord—Université Paris-Cité, 75010 Paris, France; (V.B.); (W.B.); (A.V.); (R.B.); (A.L.); (K.C.); (A.D.); (B.A.-B.); (D.S.); (C.C.)
| | - Ruxandra Burlacu
- Internal Medicine Department, Département Médico-Universitaire INVICTUS, Lariboisière Hospital, Assistance Publique-Hôpitaux de Paris (APHP).Nord—Université Paris-Cité, 75010 Paris, France; (V.B.); (W.B.); (A.V.); (R.B.); (A.L.); (K.C.); (A.D.); (B.A.-B.); (D.S.); (C.C.)
| | - Amanda Lopes
- Internal Medicine Department, Département Médico-Universitaire INVICTUS, Lariboisière Hospital, Assistance Publique-Hôpitaux de Paris (APHP).Nord—Université Paris-Cité, 75010 Paris, France; (V.B.); (W.B.); (A.V.); (R.B.); (A.L.); (K.C.); (A.D.); (B.A.-B.); (D.S.); (C.C.)
| | - Karine Champion
- Internal Medicine Department, Département Médico-Universitaire INVICTUS, Lariboisière Hospital, Assistance Publique-Hôpitaux de Paris (APHP).Nord—Université Paris-Cité, 75010 Paris, France; (V.B.); (W.B.); (A.V.); (R.B.); (A.L.); (K.C.); (A.D.); (B.A.-B.); (D.S.); (C.C.)
| | - Audrey Depond
- Internal Medicine Department, Département Médico-Universitaire INVICTUS, Lariboisière Hospital, Assistance Publique-Hôpitaux de Paris (APHP).Nord—Université Paris-Cité, 75010 Paris, France; (V.B.); (W.B.); (A.V.); (R.B.); (A.L.); (K.C.); (A.D.); (B.A.-B.); (D.S.); (C.C.)
| | - Blanca Amador-Borrero
- Internal Medicine Department, Département Médico-Universitaire INVICTUS, Lariboisière Hospital, Assistance Publique-Hôpitaux de Paris (APHP).Nord—Université Paris-Cité, 75010 Paris, France; (V.B.); (W.B.); (A.V.); (R.B.); (A.L.); (K.C.); (A.D.); (B.A.-B.); (D.S.); (C.C.)
| | - Damien Sene
- Internal Medicine Department, Département Médico-Universitaire INVICTUS, Lariboisière Hospital, Assistance Publique-Hôpitaux de Paris (APHP).Nord—Université Paris-Cité, 75010 Paris, France; (V.B.); (W.B.); (A.V.); (R.B.); (A.L.); (K.C.); (A.D.); (B.A.-B.); (D.S.); (C.C.)
- INSERM U976, Hôpital Saint-Louis, 75010 Paris, France
| | - Chloe Comarmond
- Internal Medicine Department, Département Médico-Universitaire INVICTUS, Lariboisière Hospital, Assistance Publique-Hôpitaux de Paris (APHP).Nord—Université Paris-Cité, 75010 Paris, France; (V.B.); (W.B.); (A.V.); (R.B.); (A.L.); (K.C.); (A.D.); (B.A.-B.); (D.S.); (C.C.)
- INSERM U976, Hôpital Saint-Louis, 75010 Paris, France
| | - Stéphane Mouly
- Internal Medicine Department, Département Médico-Universitaire INVICTUS, Lariboisière Hospital, Assistance Publique-Hôpitaux de Paris (APHP).Nord—Université Paris-Cité, 75010 Paris, France; (V.B.); (W.B.); (A.V.); (R.B.); (A.L.); (K.C.); (A.D.); (B.A.-B.); (D.S.); (C.C.)
- INSERM UMR-S1144, Hôpital Fernand Widal, 75010 Paris, France
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3
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Barta P, Nachtigal P, Maixnerova J, Zemankova L, Trejtnar F. Validation of Freshly Isolated Rat Renal Cells as a Tool for Preclinical Assessment of Radiolabeled Receptor-Specific Peptide Uptake in the Kidney. Pharmaceuticals (Basel) 2023; 16:ph16050696. [PMID: 37242479 DOI: 10.3390/ph16050696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/19/2023] [Accepted: 05/02/2023] [Indexed: 05/28/2023] Open
Abstract
The synthetic analogs of regulatory peptides radiolabeled with adequate radionuclides are perspective tools in nuclear medicine. However, undesirable uptake and retention in the kidney limit their application. Specific in vitro methods are used to evaluate undesirable renal accumulation. Therefore, we investigated the usefulness of freshly isolated rat renal cells for evaluating renal cellular uptake of receptor-specific peptide analogs. Special attention was given to megalin as this transport system is an important contributor to the active renal uptake of the peptides. Freshly isolated renal cells were obtained from native rat kidneys by the collagenase method. Compounds with known accumulation in renal cells were used to verify the viability of cellular transport systems. Megalin expressions in isolated rat renal cells were compared to two other potential renal cell models by Western blotting. Specific tubular cell markers were used to confirm the presence of proximal tubular cells expressing megalin in isolated rat renal cell preparations by immunohistochemistry. Colocalization experiments on isolated rat kidney cells confirmed the presence of proximal tubular cells bearing megalin in preparations. The applicability of the method was tested by an accumulation study with several analogs of somatostatin and gastrin labeled with indium-111 or lutetium-177. Therefore, isolated rat renal cells may be an effective screening tool for in vitro analyses of renal uptake and comparative renal accumulation studies of radiolabeled peptides or other radiolabeled compounds with potential nephrotoxicity.
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Affiliation(s)
- Pavel Barta
- Department of Biophysics and Physical Chemistry, Faculty of Pharmacy in Hradec Kralové, Charles University, Akademika Heyrovskeho 1203, 50005 Hradec Kralove, Czech Republic
| | - Petr Nachtigal
- Department of Biological and Medical Sciences, Faculty of Pharmacy in Hradec Kralové, Charles University, Akademika Heyrovskeho 1203, 50005 Hradec Kralove, Czech Republic
| | - Jana Maixnerova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Kralové, Charles University, Akademika Heyrovskeho 1203, 50005 Hradec Kralove, Czech Republic
| | - Lenka Zemankova
- Department of Cell Biology and Genetics, Faculty of Science, Palacky University, Slechtitelu 27, 78371 Olomouc, Czech Republic
| | - Frantisek Trejtnar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Kralové, Charles University, Akademika Heyrovskeho 1203, 50005 Hradec Kralove, Czech Republic
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4
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Devine K, Villalobos E, Kyle CJ, Andrew R, Reynolds RM, Stimson RH, Nixon M, Walker BR. The ATP-binding cassette proteins ABCB1 and ABCC1 as modulators of glucocorticoid action. Nat Rev Endocrinol 2023; 19:112-124. [PMID: 36221036 DOI: 10.1038/s41574-022-00745-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/23/2022] [Indexed: 01/24/2023]
Abstract
Responses to hormones that act through nuclear receptors are controlled by modulating hormone concentrations not only in the circulation but also within target tissues. The role of enzymes that amplify or reduce local hormone concentrations is well established for glucocorticoid and other lipophilic hormones; moreover, transmembrane transporters have proven critical in determining tissue responses to thyroid hormones. However, there has been less consideration of the role of transmembrane transport for steroid hormones. ATP-binding cassette (ABC) proteins were first shown to influence the accumulation of glucocorticoids in cells almost three decades ago, but observations over the past 10 years suggest that differential transport propensities of both exogenous and endogenous glucocorticoids by ABCB1 and ABCC1 transporters provide a mechanism whereby different tissues are preferentially sensitive to different steroids. This Review summarizes this evidence and the new insights provided for the physiology and pharmacology of glucocorticoid action, including new approaches to glucocorticoid replacement.
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Affiliation(s)
- Kerri Devine
- BHF Centre for Cardiovascular Science, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
- Translational & Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Elisa Villalobos
- BHF Centre for Cardiovascular Science, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Catriona J Kyle
- BHF Centre for Cardiovascular Science, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Ruth Andrew
- BHF Centre for Cardiovascular Science, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Rebecca M Reynolds
- BHF Centre for Cardiovascular Science, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Roland H Stimson
- BHF Centre for Cardiovascular Science, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Mark Nixon
- BHF Centre for Cardiovascular Science, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Brian R Walker
- BHF Centre for Cardiovascular Science, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK.
- Translational & Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK.
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5
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Cetin G, Tras B, Uney K. The Effects of P‐glycoprotein Modulators on the Transition of Levofloxacin to Rat Brain, Testicle, and Plasma: In Vivo and In Silico Studies. ChemistrySelect 2021. [DOI: 10.1002/slct.202102122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Gul Cetin
- Department of Pharmacology Faculty of Pharmacy Erzincan Binali Yıldırım University Erzincan 24100 Turkey
| | - Bunyamin Tras
- Department of Pharmacology and Toxicology Faculty of Veterinary Medicine Selcuk University Konya 42031 Turkey
| | - Kamil Uney
- Department of Pharmacology and Toxicology Faculty of Veterinary Medicine Selcuk University Konya 42031 Turkey
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6
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Smythe MA, Burns C, Liu Q, Garwood CL. Potential Dexamethasone-Direct Oral Anticoagulant Drug Interaction: Is This a Concern in COVID? Ann Pharmacother 2021; 56:319-329. [PMID: 34137279 DOI: 10.1177/10600280211025042] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVE To evaluate the literature on a potential dexamethasone-direct oral anticoagulant (DOAC) drug interaction and provide management considerations with COVID hypercoagulability. DATA SOURCES A search of EMBASE, PubMed, and Google Scholar (January 1990 to May 2021), limited to the English language, using applicable search terms resulted in 137 articles, with 21 relevant articles included. Regulatory agency and clinical guidance documents were also reviewed. STUDY SELECTION AND DATA EXTRACTION Included articles describe in vitro or in vivo animal or human data for dexamethasone induction of cytochrome P450 (CYP) 3A4 or P-glycoprotein (P-gp). DATA SYNTHESIS Dexamethasone has the potential to interact with the DOACs via CYP3A4 and/or P-gp induction. Only apixaban and rivaroxaban have CYP3A4 metabolism. Dexamethasone can increase CYP3A4 activity by up to 70% and reduce the area under the concentration-time curve (AUC) of CYP3A4 substrates by >40%, which is consistent with criteria for a weak CYP inducer. In rodents, dexamethasone P-gp induction is associated with AUC reductions of 20% to 50%. Human data are lacking. RELEVANCE TO PATIENT CARE AND CLINICAL PRACTICE Severe COVID-19 infection is associated with hypercoagulability. Although heparins are the preferred anticoagulants for hospitalized COVID-19 patients, DOACs are being utilized. Dexamethasone is recommended for hospitalized COVID-19 patients requiring supplemental oxygen. The concurrent use of dexamethasone and apixaban or rivaroxaban in such patients carries the potential for reduced anticoagulant effect during a state of heightened thrombotic risk. CONCLUSIONS Concurrent use of dexamethasone and apixaban or rivaroxaban in hospitalized COVID-19 patients with laboratory evidence of COVID coagulopathy should be avoided until higher-quality data are available.
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Affiliation(s)
- Maureen A Smythe
- Wayne State University, Detroit, MI, USA.,Beaumont Hospital, Royal Oak, MI, USA
| | | | | | - Candice L Garwood
- Wayne State University, Detroit, MI, USA.,Detroit Medical Center, MI, USA
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7
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Ogihara T, Mizoi K, Kamioka H, Yano K. Physiological Roles of ERM Proteins and Transcriptional Regulators in Supporting Membrane Expression of Efflux Transporters as Factors of Drug Resistance in Cancer. Cancers (Basel) 2020; 12:E3352. [PMID: 33198344 PMCID: PMC7696277 DOI: 10.3390/cancers12113352] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/06/2020] [Accepted: 11/10/2020] [Indexed: 12/23/2022] Open
Abstract
One factor contributing to the malignancy of cancer cells is the acquisition of drug resistance during chemotherapy via increased expression of efflux transporters, such as P-glycoprotein (P-gp), multidrug resistance-associated proteins (MRPs), and breast cancer resistance protein (BCRP). These transporters operate at the cell membrane, and are anchored in place by the scaffold proteins ezrin (Ezr), radixin (Rdx), and moesin (Msn) (ERM proteins), which regulate their functional activity. The identity of the regulatory scaffold protein(s) differs depending upon the transporter, and also upon the tissue in which it is expressed, even for the same transporter. Another factor contributing to malignancy is metastatic ability. Epithelial-mesenchymal transition (EMT) is the first step in the conversion of primary epithelial cells into mesenchymal cells that can be transported to other organs via the blood. The SNAI family of transcriptional regulators triggers EMT, and SNAI expression is used is an indicator of malignancy. Furthermore, EMT has been suggested to be involved in drug resistance, since drug excretion from cancer cells is promoted during EMT. We showed recently that ERM proteins are induced by a member of the SNAI family, Snail. Here, we first review recent progress in research on the relationship between efflux transporters and scaffold proteins, including the question of tissue specificity. In the second part, we review the relationship between ERM scaffold proteins and the transcriptional regulatory factors that induce their expression.
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Affiliation(s)
- Takuo Ogihara
- Graduate School of Pharmaceutical Sciences, Takasaki University of Health and Welfare, 60, Nakaorui-machi, Takasaki, Gunma 370-0033, Japan;
| | - Kenta Mizoi
- Faculty of Pharmacy, Takasaki University of Health and Welfare, 60, Nakaorui-machi, Takasaki, Gunma 370-0033, Japan; (K.M.); (K.Y.)
| | - Hiroki Kamioka
- Graduate School of Pharmaceutical Sciences, Takasaki University of Health and Welfare, 60, Nakaorui-machi, Takasaki, Gunma 370-0033, Japan;
| | - Kentaro Yano
- Faculty of Pharmacy, Takasaki University of Health and Welfare, 60, Nakaorui-machi, Takasaki, Gunma 370-0033, Japan; (K.M.); (K.Y.)
- Laboratory of Drug Metabolism and Pharmacokinetics, Yokohama University of Pharmacy, 601, Matano-cho, Totsuka-ku, Yokohama, Kanagawa 245-0066, Japan
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8
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Liu Y, Guo L, Zloh M, Zhang Y, Huang J, Wang L. Relevance of Breast Cancer Resistance Protein to Pharmacokinetics of Florfenicol in Chickens: A Perspective from In Vivo and In Vitro Studies. Int J Mol Sci 2018; 19:ijms19103165. [PMID: 30326566 PMCID: PMC6214120 DOI: 10.3390/ijms19103165] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 10/06/2018] [Accepted: 10/12/2018] [Indexed: 02/07/2023] Open
Abstract
Florfenicol (FFC) is a valuable synthetic fluorinated derivative of thiamphenicol widely used to treat infectious diseases in food animals. The aims of the study were to investigate whether FFC is a substrate for the breast cancer resistance protein (BCRP) and whether the transporter influences oral availability of FFC. In vitro transport assays using MDCK-chAbcg2 cells were conducted to assess chicken BCRP-mediated transport of FFC, while in vivo pharmacokinetic experiments with single or combined BCRP inhibitor gefitinib were employed to study the role of BCRP in oral FFC disposition. According to U.S. Food and Drug Administration (FDA) criteria, FFC was found to be a potential BCRP substrate due to the net efflux ratio being over 2.0 (2.37) in MDCK cells stably transfected with chicken BCRP and the efflux completely reversed by a BCRP inhibitor (Gefitinib). The molecular docking results indicated that florfenicol can form favorable interactions with the binding pocket of homology modeled chicken BCRP. Pharmacokinetic studies of FFC in different aged broilers with different expression levels of BCRP showed that higher BCRP expression would cause a lower Area Under Curve (AUC) and a higher clearance of FFC. In addition, more extensive absorption of florfenicol after the co-administration with gefitinib (a BCRP inhibitor) was observed. The overall results demonstrated that florfenicol is a substrate of the chicken breast cancer resistant protein which in turn affects its pharmacokinetic behavior.
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Affiliation(s)
- Yang Liu
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, No. 1 Weigang, Nanjing 210095, China.
| | - Li Guo
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, No. 1 Weigang, Nanjing 210095, China.
| | - Mire Zloh
- Faculty of Pharmacy, University Business Academy, Trg Mladenaca 5, 21000 Novi Sad, Serbia.
| | - Yujuan Zhang
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, No. 1 Weigang, Nanjing 210095, China.
| | - Jinhu Huang
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, No. 1 Weigang, Nanjing 210095, China.
| | - Liping Wang
- Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, No. 1 Weigang, Nanjing 210095, China.
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9
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Yano K, Tomono T, Ogihara T. Advances in Studies of P-Glycoprotein and Its Expression Regulators. Biol Pharm Bull 2018; 41:11-19. [PMID: 29311472 DOI: 10.1248/bpb.b17-00725] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This review deals with recent advances in studies on P-glycoprotein (P-gp) and its expression regulators, focusing especially on our own research. Firstly, we describe findings demonstrating that the distribution of P-gp along the small intestine is heterogeneous, which explains why orally administered P-gp substrate drugs often show bimodal changes of plasma concentration. Secondly, we discuss the post-translational regulation of P-gp localization and function by the scaffold proteins ezrin, radixin and moesin (ERM proteins), together with recent reports indicating that tissue-specific differences in regulation by ERM proteins in normal tissues might be retained in corresponding cancerous tissues. Thirdly, we review evidence that P-gp activity is enhanced in the process of epithelial-to-mesenchymal transition (EMT), which is associated with cancer progression, without any increase in expression of P-gp mRNA. Finally, we describe two examples in which P-gp critically influences the brain distribution of drugs, i.e., oseltamivir, where low levels of P-gp associated with early development allow oseltamivir to enter the brain, potentially resulting in neuropsychiatric side effects in children, and cilnidipine, where impairment of P-gp function in ischemia allows cilnidipine to enter the ischemic brain, where it exerts a neuroprotective action.
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Affiliation(s)
- Kentaro Yano
- Faculty of Pharmacy, Takasaki University of Health and Welfare
| | - Takumi Tomono
- Graduate School of Pharmaceutical Sciences, Takasaki University of Health and Welfare
| | - Takuo Ogihara
- Faculty of Pharmacy, Takasaki University of Health and Welfare.,Graduate School of Pharmaceutical Sciences, Takasaki University of Health and Welfare
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10
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Improvement of intestinal transport, absorption and anti-diabetic efficacy of berberine by using Gelucire44/14: In vitro, in situ and in vivo studies. Int J Pharm 2018; 544:46-54. [DOI: 10.1016/j.ijpharm.2018.04.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 04/09/2018] [Accepted: 04/10/2018] [Indexed: 12/28/2022]
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11
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Gott RC, Kunkel GR, Zobel ES, Lovett BR, Hawthorne DJ. Implicating ABC Transporters in Insecticide Resistance: Research Strategies and a Decision Framework. JOURNAL OF ECONOMIC ENTOMOLOGY 2017; 110:667-677. [PMID: 28334260 DOI: 10.1093/jee/tox041] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Indexed: 06/06/2023]
Abstract
Pest insects damage crops, transmit diseases, and are household nuisances. Historically, they have been controlled with insecticides, but overuse often leads to resistance to one or more of these chemicals. Insects gain resistance to insecticides through behavioral, metabolic, genetic, and physical mechanisms. One frequently overlooked strategy is through the use of ATP-binding cassette (ABC) transporters. ABC transporters, present in all domains of life, perform natural excretory functions, thus the exploitation of these transporters to excrete insecticides and contribute to resistance is highly plausible. Previous work has implicated ABC transporters in some cases of insecticide resistance. Proposed herein is a framework meant as a formal guide for more easily incorporating the analysis of ABC transporters into existing resistance monitoring using suggested simple research methods. This framework functions as a simple decision tree and its utility is demonstrated using case examples. Determining a role for ABC transporters in insecticide resistance would help to shape future resistance management plans and guide the design of new insecticides.
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Affiliation(s)
- Ryan C Gott
- Department of Entomology, University of Maryland, 4112 Plant Sciences Building, College Park, MD 20742 (; ; ; ; )
| | - Grace R Kunkel
- Department of Entomology, University of Maryland, 4112 Plant Sciences Building, College Park, MD 20742 (; ; ; ; )
| | - Emily S Zobel
- Department of Entomology, University of Maryland, 4112 Plant Sciences Building, College Park, MD 20742 (; ; ; ; )
| | - Brian R Lovett
- Department of Entomology, University of Maryland, 4112 Plant Sciences Building, College Park, MD 20742 (; ; ; ; )
| | - David J Hawthorne
- Department of Entomology, University of Maryland, 4112 Plant Sciences Building, College Park, MD 20742 (; ; ; ; )
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12
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Størset E, Hole K, Midtvedt K, Bergan S, Molden E, Åsberg A. The CYP3A biomarker 4β-hydroxycholesterol does not improve tacrolimus dose predictions early after kidney transplantation. Br J Clin Pharmacol 2017; 83:1457-1465. [PMID: 28146606 DOI: 10.1111/bcp.13248] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 01/16/2017] [Accepted: 01/29/2017] [Indexed: 12/22/2022] Open
Abstract
AIMS Tacrolimus is a cornerstone in modern immunosuppressive therapy after kidney transplantation. Tacrolimus dosing is challenged by considerable pharmacokinetic variability, both between patients and over time after transplantation, partly due to variability in cytochrome P450 3A (CYP3A) activity. The aim of this study was to assess the value of the endogenous CYP3A marker 4β-hydroxycholesterol (4βOHC) for tacrolimus dose individualization early after kidney transplantation. METHODS Data were obtained from 79 adult kidney transplant recipients who contributed a total of 625 4βOHC measurements and 1999 tacrolimus whole blood concentrations during the first 2 months after transplantation. The relationships between 4βOHC levels and individual estimates of tacrolimus apparent plasma clearance (CL/Fplasma ) at different time points after transplantation were investigated using scatterplots and population pharmacokinetic modelling. RESULTS There was no significant correlation between pre-transplant 4βOHC levels and tacrolimus CL/Fplasma the first week (r = 0.19 [95% CI -0.03-0.40]) or between 4βOHC and tacrolimus CL/Fplasma 1 week (r = 0.20 [-0.11-0.47]), 4 weeks (r = 0.21 [-0.07-0.46]) or 2 months (r = 0.24 [-0.03-0.48]) after transplantation (P ≥ 0.06). In the population analysis, time-varying 4βOHC was not a statistically significant covariate on tacrolimus CL/Fplasma , neither in terms of absolute values (P = 0.11) nor in terms of changes from baseline (P = 0.17). 4βOHC values increased between 1 week and 2 months after transplantation (median change +57% [IQR +22-83%], P < 0.001), indicating increasing CYP3A activity. Contradictorily, tacrolimus CL/Fplasma decreased over the same period (median change -13% [IQR -3 to -26%], P < 0.001). CONCLUSIONS 4βOHC does not appear to have a clinical potential to improve individualization of tacrolimus doses early after kidney transplantation.
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Affiliation(s)
- Elisabet Størset
- Department of Transplant Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Norway
| | - Kristine Hole
- Center for Psychopharmacology, Diakonhjemmet Hospital, Oslo, Norway
| | - Karsten Midtvedt
- Department of Transplant Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Stein Bergan
- Department of Pharmaceutical Biosciences, School of Pharmacy, University of Oslo, Norway.,Department of Pharmacology, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Espen Molden
- Center for Psychopharmacology, Diakonhjemmet Hospital, Oslo, Norway.,Department of Pharmaceutical Biosciences, School of Pharmacy, University of Oslo, Norway
| | - Anders Åsberg
- Department of Transplant Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway.,Department of Pharmaceutical Biosciences, School of Pharmacy, University of Oslo, Norway
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Effects of 2 Polyoxyethylene Alkyl Ethers on the Function of Intestinal P-glycoprotein and Their Inhibitory Mechanisms. J Pharm Sci 2016; 105:3668-3679. [DOI: 10.1016/j.xphs.2016.09.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 08/13/2016] [Accepted: 09/01/2016] [Indexed: 11/19/2022]
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14
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Petropoulos S, Kalabis GM, Gibb W, Matthews SG. Functional Changes of Mouse Placental Multidrug Resistance Phosphoglycoprotein (ABCB1) With Advancing Gestation and Regulation by Progesterone. Reprod Sci 2016; 14:321-8. [PMID: 17644804 DOI: 10.1177/1933719107303856] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Multidrug resistance phosphoglycoprotein (ABCB1) has been shown to limit maternal-fetal transfer by actively excluding ABCB1 substrates. The authors have previously demonstrated a marked decrease in placental ABCB1 expression in the human and mouse with advancing gestation. In the present study, it is hypothesized that the decrease in ABCB1 expression will result in increased transplacental transfer of ABCB1 substrates over the second half of gestation and that progesterone exhibits a regulatory role on placental ABCB1 expression and function. The authors demonstrate a significant increase in transplacental transfer of [(3)H]digoxin (an ABCB1 substrate) in late gestation (E18.5; P < .001) when compared to earlier embryonic days. Furthermore, maternal plasma progesterone levels did not influence expression or function of ABCB1. The authors conclude that the fetus is increasingly exposed to both endogenous and exogenous substrates of ABCB1 present in the maternal circulation with advancing gestation and that progesterone does not elicit a regulatory role on placental ABCB1 expression or function in vivo.
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15
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Zhao B, Xie GJ, Li RF, Chen Q, Zhang XQ. Dexamethasone protects normal human liver cells from apoptosis induced by tumor necrosis factor-related apoptosis-inducing ligand by upregulating the expression of P-glycoproteins. Mol Med Rep 2015; 12:8093-100. [PMID: 26496964 DOI: 10.3892/mmr.2015.4458] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 09/09/2015] [Indexed: 11/06/2022] Open
Abstract
Glucocorticoids are effective for the treatment of acute-on-chronic pre-liver failure, severe chronic hepatitis B and acute liver failure; however, the mechanism underlying the effects of treatment by glucocorticoids remains to be fully elucidated. The role and detailed mechanism of how glucocorticoids prevent liver disease progression can be elucidated by investigating the apoptosis of hepatocytes following glucocorticoid treatment. P‑glycoproteins (P‑gps) also confer resistance to apoptosis induced by a diverse range of stimuli. Glucocorticoids, particularly dexamethasone (DEX), upregulate the expression of P‑gp in several tissues. In the present study, the normal human L‑02 liver cell line was used, and techniques, including immunocytochemistry, western blot analysis, flow cytometry and reverse transcription‑quantitative polymerase chain reaction analysis were used for determining the expression levels of P‑gps, and for evaluating the effect of DEX pretreatment on the expression of P‑gps. DEX (1‑10 µM) was added to the cell culture media and incubated for 24‑72 h. The results revealed that DEX upregulated the mRNA and protein levels of P‑gp in a dose‑ and time‑dependent manner. Subsequently, tumor necrosis factor‑related apoptosis‑inducing ligand (TRAIL) was used for the induction of apoptosis in the cells, followed by a terminal deoxynucleotidyl transferase dUTP nick end labeling assay to assess the apoptotic stages. The results demonstrated that apoptosis in the group of cells, which were pre‑treated with DEX was significantly lower than that in the control group. Treatment with tariquidar, a P‑gp inhibitor, reduced the anti‑apoptotic effects of DEX. These results established that DEX protects normal human liver cells from TRAIL‑induced apoptosis by upregulating the expression of P-gp. These observations may be useful for elucidating the mechanism of DEX for preventing the progression of liver disease.
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Affiliation(s)
- Bo Zhao
- Department of Infectious Diseases, Southwest Hospital, Third Military Medical University, Chongqing 400038, P.R. China
| | - Gui-Juan Xie
- Department of Infectious Diseases, Southwest Hospital, Third Military Medical University, Chongqing 400038, P.R. China
| | - Rui-Feng Li
- Department of Infectious Diseases, Southwest Hospital, Third Military Medical University, Chongqing 400038, P.R. China
| | - Qing Chen
- Department of Infectious Diseases, Southwest Hospital, Third Military Medical University, Chongqing 400038, P.R. China
| | - Xu-Qing Zhang
- Department of Infectious Diseases, Southwest Hospital, Third Military Medical University, Chongqing 400038, P.R. China
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16
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Lee SH, Kim JS, Ravichandran K, Gil HW, Song HY, Hong SY. P-Glycoprotein Induction Ameliorates Colistin Induced Nephrotoxicity in Cultured Human Proximal Tubular Cells. PLoS One 2015; 10:e0136075. [PMID: 26287374 PMCID: PMC4545883 DOI: 10.1371/journal.pone.0136075] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 07/22/2015] [Indexed: 01/08/2023] Open
Abstract
The pathogenesis of colistin induced nephrotoxicity is poorly understood. Currently there are no effective therapeutic or prophylactic agents available. This study was aimed to determine the mechanism of colistin induced nephrotoxicity and to determine whether P-glycoprotein (P-gp) induction could prevent colistin induced nephrotoxicity. Colistin induced cell toxicity in cultured human proximal tubular cells in both dose and time dependent manner. Colistin provoked ROS in a dose dependent manner as measured by DCF-DA. To investigate apoptosis, caspase 3/7 activity was determined. Caspase 3/7 activity was increased dose dependently (25, 50, 100 μg/ml) at 6 h. Autophagosome formation was assessed by measuring LC3- II/LC3-I ratio. The ratio of LC3-II to LC3- I was increased at 2 h (25 μg/ml). Suppression of autophagosome formation increased colistin induced nephrotoxicity. The expression of P-gp and the cell toxicity was determined in colistin with or without dexamethasone (P-gp inducer) and verapamil (selective P-gp inhibitor). Colistin itself suppressed the expression of P-gp. P-gp expression and activity decreased colistin induced nephrotoxicity with dexamethasone treatment. In addition induced P-gp transporter was shown to improve the efflux effect on colistin treated HK2 cell line, which was demonstrated by calcein-AM fluorescence accumulation assay. The increased activity could be blocked by N-acetylcysteine. In conclusion, colistin induces nephrotoxicity by suppressing P-gp. Induction of P-gp could ameliorate colistin induced nephrotoxicity by decreasing apoptosis.
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Affiliation(s)
- Sun-hyo Lee
- Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
| | - Jin-sun Kim
- Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
| | - Kameswaran Ravichandran
- Division of Renal Diseases and Hypertension, University of Colorado Denver, Aurora, Colorado, United States of America
| | - Hyo-Wook Gil
- Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
- * E-mail:
| | - Ho-yeon Song
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - Sae-yong Hong
- Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
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Kobori T, Harada S, Nakamoto K, Tokuyama S. Role of Scaffold Proteins in Functional Alteration of Small Intestinal P-glycoprotein by Anti-cancer Drugs. YAKUGAKU ZASSHI 2015; 135:687-95. [DOI: 10.1248/yakushi.14-00234-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Takuro Kobori
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University
| | - Shinichi Harada
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University
| | - Kazuo Nakamoto
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University
| | - Shogo Tokuyama
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University
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18
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Kocharyan A, Feldman R, Singleton A, Han X, Bleier BS. P-glycoprotein inhibition promotes prednisone retention in human sinonasal polyp explants. Int Forum Allergy Rhinol 2014; 4:734-8. [DOI: 10.1002/alr.21361] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 05/21/2014] [Accepted: 05/29/2014] [Indexed: 12/29/2022]
Affiliation(s)
- Armine Kocharyan
- Department of Otology and Laryngology, Massachusetts Eye and Ear Infirmary; Harvard Medical School; Boston MA
| | - Rachel Feldman
- Department of Otology and Laryngology, Massachusetts Eye and Ear Infirmary; Harvard Medical School; Boston MA
| | - Amy Singleton
- Department of Biomedical Engineering; Boston University; Boston MA
| | - Xue Han
- Department of Biomedical Engineering; Boston University; Boston MA
| | - Benjamin S. Bleier
- Department of Otology and Laryngology, Massachusetts Eye and Ear Infirmary; Harvard Medical School; Boston MA
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19
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Kobori T, Harada S, Nakamoto K, Tokuyama S. Mechanisms of P-Glycoprotein Alteration During Anticancer Treatment: Role in the Pharmacokinetic and Pharmacological Effects of Various Substrate Drugs. J Pharmacol Sci 2014; 125:242-54. [DOI: 10.1254/jphs.14r01cr] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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20
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Abstract
Organic anions and cations (OAs and OCs, respectively) comprise an extraordinarily diverse array of compounds of physiological, pharmacological, and toxicological importance. The kidney, primarily the renal proximal tubule, plays a critical role in regulating the plasma concentrations of these organic electrolytes and in clearing the body of potentially toxic xenobiotics agents, a process that involves active, transepithelial secretion. This transepithelial transport involves separate entry and exit steps at the basolateral and luminal aspects of renal tubular cells. Basolateral and luminal OA and OC transport reflects the concerted activity of a suite of separate proteins arranged in parallel in each pole of proximal tubule cells. The cloning of multiple members of several distinct transport families, the subsequent characterization of their activity, and their subcellular localization within distinct regions of the kidney, now allows the development of models describing the molecular basis of the renal secretion of OAs and OCs. New information on naturally occurring genetic variation of many of these processes provides insight into the basis of observed variability of drug efficacy and unwanted drug-drug interactions in human populations. The present review examines recent work on these issues.
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Affiliation(s)
- Ryan M Pelis
- Novartis Pharmaceuticals Corp., Translational Sciences, East Hanover, New Jersey, USA
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21
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Guo M, Bughio S, Sun Y, Zhang Y, Dong L, Dai X, Wang L. Age-related P-glycoprotein expression in the intestine and affecting the pharmacokinetics of orally administered enrofloxacin in broilers. PLoS One 2013; 8:e74150. [PMID: 24066110 PMCID: PMC3774662 DOI: 10.1371/journal.pone.0074150] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Accepted: 07/27/2013] [Indexed: 01/02/2023] Open
Abstract
Bioavailability is the most important factor for the efficacy of any drug and it is determined by P- glycoprotein (P-gp) expression. Confirmation of P-gp expression during ontogeny is needed for understanding the differences in therapeutic efficacy of any drug in juvenile and adult animals. In this study, Abcb1 mRNA levels in the liver and intestine of broilers during ontogeny were analysed by RT qPCR. Cellular distribution of P-gp was detected by immunohistochemstry. Age-related differences of enrofloxacin pharmacokinetics were also studied. It was found that broilers aged 4 week-old expressed significantly (P<0.01) higher levels of P-gp mRNA in the liver, jejunum and ileum, than at other ages. However, there was no significant (P>0.05) age-related difference in the duodenum. Furthermore, the highest and lowest levels of Abcb1 mRNA expression were observed in the jejunum, and duodenum, respectively. P-gp immunoreactivity was detected on the apical surface of the enterocytes and in the bile canalicular membranes of the hepatocytes. Pharmacokinetic analysis revealed that the 8 week-old broilers, when orally administrated enrofloxacin, exhibited significantly higher Cmax (1.97 vs. 0.98 μg•ml-1, P=0.009), AUC(14.54 vs. 9.35 μg•ml-1•h, P=0.005) and Ka (1.38 vs. 0.43 h-1, P=0.032), as well as lower Tpeak (1.78 vs. 3.28 h, P=0.048) and T1/2ka (0.6 vs. 1.64 h, P=0.012) than the 4 week-old broilers. The bioavailability of enrofloxacin in 8 week-old broilers was increased by 15.9%, compared with that in 4 week-old birds. Interestingly, combining verapamil, a P-gp modulator, significantly improved pharmacokinetic behaviour of enrofloxacin in all birds. The results indicate juvenile broilers had a higher expression of P-gp in the intestine, affecting the pharmacokinetics and reducing the bioavailability of oral enrofloxacin in broilers. On the basis of our results, it is recommended that alternative dose regimes are necessary for different ages of broilers for effective therapy.
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Affiliation(s)
- Mengjie Guo
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, P. R. China
| | - Shamsuddin Bughio
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, P. R. China
| | - Yong Sun
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, P. R. China
| | - Yu Zhang
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, P. R. China
| | - Lingling Dong
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, P. R. China
| | - Xiaohua Dai
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, P. R. China
| | - Liping Wang
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, P. R. China
- * E-mail:
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22
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Yano K, Tomono T, Sakai R, Kano T, Morimoto K, Kato Y, Ogihara T. Contribution of Radixin to P-Glycoprotein Expression and Transport Activity in Mouse Small Intestine In Vivo. J Pharm Sci 2013; 102:2875-81. [DOI: 10.1002/jps.23637] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 05/14/2013] [Accepted: 05/21/2013] [Indexed: 11/11/2022]
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23
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Kobori T, Harada S, Nakamoto K, Tokuyama S. Time-Dependent Changes in the Activation of RhoA/ROCK and ERM/p-ERM in the Increased Expression of Intestinal P-Glycoprotein by Repeated Oral Treatment with Etoposide. J Pharm Sci 2013; 102:1670-82. [DOI: 10.1002/jps.23503] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 01/30/2013] [Accepted: 02/19/2013] [Indexed: 11/12/2022]
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Shihab FS, Lee ST, Smith LD, Woodle ES, Pirsch JD, Gaber AO, Henning AK, Reisfield R, Fitzsimmons W, Holman J. Effect of corticosteroid withdrawal on tacrolimus and mycophenolate mofetil exposure in a randomized multicenter study. Am J Transplant 2013; 13:474-84. [PMID: 23167508 DOI: 10.1111/j.1600-6143.2012.04327.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Revised: 09/08/2012] [Accepted: 09/27/2012] [Indexed: 01/25/2023]
Abstract
As corticosteroid-sparing protocols are increasingly utilized in kidney transplant recipients, it is crucial to understand potential drug interactions between tacrolimus (TAC) and the effect of corticosteroid withdrawal as well as to characterize dose adjustments of mycophenolate mofetil (MMF) in this setting. This prospective, multicenter, randomized, double-blind study included 397 patients who were randomized on posttransplant day 8 to receive either placebo (CSWD) or corticosteroid continuance (CCS). TAC trough levels at week two posttransplant were significantly greater in the CSWD group whereas TAC doses were comparable to the CCS group. This interaction was not observed in the African American subgroup. Higher serum creatinine and potassium levels were also observed in the CSWD group. MMF dose was significantly reduced in the CSWD group by the investigators because of decreased WBC counts, mostly outside of study protocol criteria, despite similar incidence of neutropenia and reported cytomegalovirus infection. Understanding TAC and MMF exposure in the context of corticosteroid-sparing protocols should allow for improved dosing of immunosuppressants and better management of posttransplant patients.
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Affiliation(s)
- F S Shihab
- University of Utah, Salt Lake City, UT, USA.
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Kobori T, Kobayashi M, Harada S, Nakamoto K, Fujita-Hamabe W, Tokuyama S. RhoA affects oral morphine analgesia depending on functional variation in intestinal P-glycoprotein induced by repeated etoposide treatment. Eur J Pharm Sci 2012; 47:934-40. [DOI: 10.1016/j.ejps.2012.08.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Revised: 07/17/2012] [Accepted: 08/30/2012] [Indexed: 02/05/2023]
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26
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Masereeuw R, Russel FGM. Regulatory pathways for ATP-binding cassette transport proteins in kidney proximal tubules. AAPS JOURNAL 2012; 14:883-94. [PMID: 22961390 DOI: 10.1208/s12248-012-9404-z] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 05/20/2012] [Accepted: 08/15/2012] [Indexed: 01/24/2023]
Abstract
The ATP-binding cassette transport proteins (ABC transporters) represent important determinants of drug excretion. Protective or excretory tissues where these transporters mediate substrate efflux include the kidney proximal tubule. Regulation of the transport proteins in this tissue requires elaborate signaling pathways, including genetic, epigenetic, nuclear receptor mediated, posttranscriptional gene regulation involving microRNAs, and non-genomic (kinases) pathways triggered by hormones and/or growth factors. This review discusses current knowledge on regulatory pathways for ABC transporters in kidney proximal tubules, with a main focus on P-glycoprotein, multidrug resistance proteins 2 and 4, and breast cancer resistance protein. Insight in these processes is of importance because variations in transporter activity due to certain (disease) conditions could lead to significant changes in drug efficacy or toxicity.
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Affiliation(s)
- Rosalinde Masereeuw
- Department of Pharmacology and Toxicology (149), Nijmegen Centre for Molecular Life Sciences/Institute for Genetic and Metabolic Disease, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500, HB, Nijmegen, The Netherlands.
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Zarogoulidis P, Chatzaki E, Porpodis K, Domvri K, Hohenforst-Schmidt W, Goldberg EP, Karamanos N, Zarogoulidis K. Inhaled chemotherapy in lung cancer: future concept of nanomedicine. Int J Nanomedicine 2012; 7:1551-72. [PMID: 22619512 PMCID: PMC3356182 DOI: 10.2147/ijn.s29997] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Regional chemotherapy was first used for lung cancer 30 years ago. Since then, new methods of drug delivery and pharmaceuticals have been investigated in vitro, and in animals and humans. An extensive review of drug delivery systems, pharmaceuticals, patient monitoring, methods of enhancing inhaled drug deposition, safety and efficacy, and also additional applications of inhaled chemotherapy and its advantages and disadvantages are presented. Regional chemotherapy to the lung parenchyma for lung cancer is feasible and efficient. Safety depends on the chemotherapy agent delivered to the lungs and is dose-dependent and time-dependent. Further evaluation is needed to provide data regarding early lung cancer stages, and whether regional chemotherapy can be used as neoadjuvant or adjuvant treatment. Finally, inhaled chemotherapy could one day be administered at home with fewer systemic adverse effects.
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Affiliation(s)
- Paul Zarogoulidis
- Pulmonary Department, G Papanikolaou General Hospital, Aristotle University of Thessaloniki, Greece.
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Protective effect of methylprednisolone on paraquat-induced A549 cell cytotoxicity via induction of efflux transporter, P-glycoprotein expression. Toxicol Lett 2012; 208:101-7. [DOI: 10.1016/j.toxlet.2011.10.019] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Revised: 10/18/2011] [Accepted: 10/25/2011] [Indexed: 11/23/2022]
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Hackenberger BK, Velki M, Stepić S, Hackenberger DK. First evidence for the presence of efflux pump in the earthworm Eisenia andrei. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2012; 75:40-45. [PMID: 22033226 DOI: 10.1016/j.ecoenv.2011.06.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Revised: 06/22/2011] [Accepted: 06/27/2011] [Indexed: 05/31/2023]
Abstract
Efflux pumps are transport proteins involved in the extrusion of toxic substrates from cells to the external environment. Activities of efflux pumps have been found in many organisms, however such activity has not been evidenced in earthworms. Adult Eisenia andrei earthworms were exposed to efflux modulators - verapamil (a known inhibitor of efflux pump protein) and dexamethasone (a known inducer of efflux activity) - and the amount of absorbed fluorescent dye rhodamine B was measured. The results showed that verapamil inhibited efflux activity and decreased removal of rhodamine B, whereas dexamethasone induced efflux activity and increased removal of rhodamine B. This is the first evidence of the presence of efflux pump in earthworm Eisenia andrei. Since earthworms are often used as test organisms due to their sensitive reactions towards environmental influences, the discovery of efflux pump activity can contribute to the better understanding of toxicity of certain pollutants.
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Cantore M, Reinehr R, Sommerfeld A, Becker M, Häussinger D. The Src family kinase Fyn mediates hyperosmolarity-induced Mrp2 and Bsep retrieval from canalicular membrane. J Biol Chem 2011; 286:45014-29. [PMID: 22057277 PMCID: PMC3247936 DOI: 10.1074/jbc.m111.292896] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Revised: 10/23/2011] [Indexed: 12/17/2022] Open
Abstract
In perfused rat liver, hyperosmolarity induces Mrp2- (Kubitz, R., D'urso, D., Keppler, D., and Häussinger, D. (1997) Gastroenterology 113, 1438-1442) and Bsep retrieval (Schmitt, M., Kubitz, R., Lizun, S., Wettstein, M., and Häussinger, D. (2001) Hepatology 33, 509-518) from the canalicular membrane leading to cholestasis. The aim of this study was to elucidate the underlying signaling events. Hyperosmolarity-induced retrieval of Mrp2 and Bsep from the canalicular membrane in perfused rat liver was accompanied by an activating phosphorylation of the Src kinases Fyn and Yes but not of c-Src. Both hyperosmotic transporter retrieval and Src kinase activation were sensitive to apocynin (300 μmol/liter), N-acetylcysteine (NAC; 10 mmol/liter), and SU6656 (1 μmol/liter). Also PP-2 (250 nmol/liter), which inhibited hyperosmotic Fyn but not Yes activation, prevented hyperosmotic transporter retrieval from the canalicular membrane, suggesting that Fyn but not Yes mediates hyperosmotic Bsep and Mrp2 retrieval. Neither hyperosmotic Fyn activation nor Bsep/Mrp2 retrieval was observed in livers from p47(phox) knock-out mice. Hyperosmotic activation of JNKs was sensitive to apocynin and NAC but insensitive to SU6656 and PP-2, indicating that JNKs are not involved in transporter retrieval, as also evidenced by experiments using the JNK inhibitors L-JNKI-1 and SP6001255, respectively. Hyperosmotic transporter retrieval was accompanied by a NAC and Fyn knockdown-sensitive inhibition of biliary excretion of the glutathione conjugate of 1-chloro-2,4-dinitrobenzene in perfused rat liver and of cholyl-L-lysyl-fluorescein secretion into the pseudocanaliculi formed by hepatocyte couplets. Hyperosmolarity triggered an association between Fyn and cortactin and increased the amount of phosphorylated cortactin underneath the canalicular membrane. It is concluded that the hyperosmotic cholestasis is triggered by a NADPH oxidase-driven reactive oxygen species formation that mediates Fyn-dependent retrieval of the Mrp2 and Bsep from the canalicular membrane, which may involve an increased cortactin phosphorylation.
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Affiliation(s)
- Miriam Cantore
- From the Clinic for Gastroenterology, Hepatology, and Infectiology, Heinrich-Heine-University Düsseldorf, D-40225 Düsseldorf, Germany
| | - Roland Reinehr
- From the Clinic for Gastroenterology, Hepatology, and Infectiology, Heinrich-Heine-University Düsseldorf, D-40225 Düsseldorf, Germany
| | - Annika Sommerfeld
- From the Clinic for Gastroenterology, Hepatology, and Infectiology, Heinrich-Heine-University Düsseldorf, D-40225 Düsseldorf, Germany
| | - Martin Becker
- From the Clinic for Gastroenterology, Hepatology, and Infectiology, Heinrich-Heine-University Düsseldorf, D-40225 Düsseldorf, Germany
| | - Dieter Häussinger
- From the Clinic for Gastroenterology, Hepatology, and Infectiology, Heinrich-Heine-University Düsseldorf, D-40225 Düsseldorf, Germany
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The interactions of age, sex, body mass index, genetics, and steroid weight-based doses on tacrolimus dosing requirement after adult kidney transplantation. Eur J Clin Pharmacol 2011; 68:671-80. [PMID: 22101623 DOI: 10.1007/s00228-011-1150-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Accepted: 10/17/2011] [Indexed: 01/17/2023]
Abstract
PURPOSE The aim of this study was to evaluate the effect of different clinical covariates on tacrolimus dose requirements in adult kidney transplant patients with a specific focus on drug interactions. PATIENTS Tacrolimus dosing requirement, normalized by drug levels and expressed as the concentration/dose (C/D) ratio as a surrogate index of tacrolimus bioavailability, was employed to identify four categories of tacrolimus dosing requirement, namely, very high, high, small, and very-small, in very fast, fast, slow, and very slow metabolizers, respectively. Steroid weight-based doses were analyzed instead of fixed doses, and genetic analysis of cytochrome P450 (CYP) 3A5*1/*3 and multi-drug resistance 1 (MDR1) C3435T and C1236T polymorphisms were performed RESULTS Multivariate analysis on 450 adult transplant patients identified six risk factors for being slow metabolizers and therefore requiring small tacrolimus doses: male sex (OR 1.615, p = 0.020); age >60 years (OR 2.456, p = 0.0005); body mass index ≥ 25 (OR 1.546, p = 0.046), hepatitis C virus positivity (OR 2.800, p = 0.0004); low steroid dose <0.06 mg/kg (OR 3.101, p < 0.0001). Patients with a small tacrolimus requirement were at increased risk for multiple infections (OR 1.533, p = 0.0008) and higher systolic blood pressure (OR 1.385, p = 0.022) and showed a significant association with the CYP3A5*3/*3 genotype adjusted by MDR1 polymorphisms C3435T and C1236T (OR 8.104, p = 0.0001). CONCLUSIONS Our results demonstrate the importance of the interaction among genetic and clinical factors in conditioning tacrolimus disposition, with corticosteroid weight-based dose being the only modifiable risk factor for tacrolimus requirement. As the tacrolimus dosing requirement increases with increasing tacrolimus clearance through concomitant steroid use, undesirable changes in tacrolimus levels may occur when steroid doses are tapered, predominantly in slow metabolizers. This often neglected drug interaction has to be monitored to optimize tacrolimus exposure in kidney transplant patients.
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Ferraris JR, Argibay PF, Costa L, Jimenez G, Coccia PA, Ghezzi LFR, Ferraris V, Belloso WH, Redal MA, Larriba JM. Influence of CYP3A5 polymorphism on tacrolimus maintenance doses and serum levels after renal transplantation: age dependency and pharmacological interaction with steroids. Pediatr Transplant 2011; 15:525-32. [PMID: 21711429 DOI: 10.1111/j.1399-3046.2011.01513.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
TAC, MMF and MP are used in pediatric kidney tx. The cytochrome P450 (CYP)3A5 enzyme appears to play a role in TAC metabolism. The aims of this study were to investigate CYP3A5 polymorphism's effect on TAC dosing and the age dependency of TAC dosing by testing blood concentrations, and the interaction between steroids and TAC during the first year after tx. Genomic DNA was extracted and amplified with specific primers. CYP3A5 alleles were confirmed by direct sequencing of PCR products on an automated AB13100 capillary sequencer. We studied 48 renal transplant patients (age at tx 12±0.5yr, 22 boys) receiving TAC, MMF, MP. Of these, 79% were CYP3A5*3/*3 (non-expressers homozygotes) and 21% were CYP3A5*1/*3 (expressers). TAC trough levels were 7.1±0.4ng/mL in CYP3A5*3/*3 patients and 6.5±0.7ng/mL in CYP3A5*1/*3 group (p=0.03). CYP3A5*1/*3 patients had lower levels of dose-adjusted TAC (36.7±5.8ng/mL/mg/kg/day) to achieve target blood concentration and required higher daily dose per weight (0.21±0.03mg/kg/day) than CYP3A5*3/*3 patients, 72.4±8.0ng/mL/mg/kg/day and 0.13±0.01mg/kg/day (p<0.001). Prepubertal patients with different CYP3A5 polymorphisms required significant higher TAC doses and achieved lower dose-normalized concentration compared with pubertal patients. Both TAC dose and adjusted-dose correlated with daily MP dose in CYP3A5*1*3 (r: 0.4, p<0.03 and r: 0.4, p<0.03) and in CYP3A5*3*3 (r: 0.6, p<0.01 and r: 0.47, p<0.001) patients. CYP3A5 polymorphism performed before tx could contribute to a better individualization of TAC therapy. The higher TAC dose in prepubertal patients and the pharmacological interactions between MP and TAC may not be fully explained by different CYP3A5 polymorphisms.
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Affiliation(s)
- Jorge R Ferraris
- Servicio de Nefrología Pediátrica, Hospital Italiano de Buenos Aires Departamento de Pediatría, Universidad de Buenos Aires.
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Yoon EL, Yim HJ, Kim SY, Kim JH, Lee JH, Lee YS, Lee HJ, Jung SW, Lee SW, Choi JH. Clinical courses after administration of oral corticosteroids in patients with severely cholestatic acute hepatitis A; three cases. THE KOREAN JOURNAL OF HEPATOLOGY 2011; 16:329-33. [PMID: 20924218 PMCID: PMC3304601 DOI: 10.3350/kjhep.2010.16.3.329] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Acute hepatitis A is currently outbreaking in Korea. Although prognosis of acute hepatitis A is generally favorable, a minority of patients are accompanied by fatal complications. Severe cholestasis is one of the important causes of prolonged hospitalization in patients with acute hepatitis A. In such cases, higher chances of additional complications and increased medical costs are inevitable. We report three cases of severely cholestatic hepatitis A, who showed favorable responses to oral corticosteroids. Thirty milligram of prednisolone was initiated and tapered according to the responses. Rapid improvement was observed in all cases without side effects. We suggest that corticosteroid administration can be useful in hepatitis A patients with severe cholestasis who do not show improvement by conservative managements. Clinical trial will be needed to evaluate effectiveness of corticosteroids in these patients.
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Affiliation(s)
- Eileen L Yoon
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
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Gu X, Manautou JE. Regulation of hepatic ABCC transporters by xenobiotics and in disease states. Drug Metab Rev 2010; 42:482-538. [PMID: 20233023 DOI: 10.3109/03602531003654915] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The subfamily of ABCC transporters consists of 13 members in mammals, including the multidrug resistance-associated proteins (MRPs), sulfonylurea receptors (SURs), and the cystic fibrosis transmembrane conductance regulator (CFTR). These proteins play roles in chemical detoxification, disposition, and normal cell physiology. ABCC transporters are expressed differentially in the liver and are regulated at the transcription and translation level. Their expression and function are also controlled by post-translational modification and membrane-trafficking events. These processes are tightly regulated. Information about alterations in the expression of hepatobiliary ABCC transporters could provide important insights into the pathogenesis of diseases and disposition of xenobiotics. In this review, we describe the regulation of hepatic ABCC transporters in humans and rodents by a variety of xenobiotics, under disease states and in genetically modified animal models deficient in transcription factors, transporters, and cell-signaling molecules.
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Affiliation(s)
- Xinsheng Gu
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, 06269, USA
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Hayashi Y, Ushijima K, Ando H, Yanagihara H, Ishikawa E, Tsuruoka SI, Sugimoto KI, Fujimura A. Influence of a Time-Restricted Feeding Schedule on the Daily Rhythm of abcb1a Gene Expression and Its Function in Rat Intestine. J Pharmacol Exp Ther 2010; 335:418-23. [DOI: 10.1124/jpet.110.170837] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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36
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Bosquillon C. Drug transporters in the lung--do they play a role in the biopharmaceutics of inhaled drugs? J Pharm Sci 2010; 99:2240-55. [PMID: 19950388 DOI: 10.1002/jps.21995] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The role of transporters in drug absorption, distribution and elimination processes as well as in drug-drug interactions is increasingly being recognised. Although the lungs express high levels of both efflux and uptake drug transporters, little is known of the implications for the biopharmaceutics of inhaled drugs. The current knowledge of the expression, localisation and functionality of drug transporters in the pulmonary tissue and the few studies that have looked at their impact on pulmonary drug absorption is extensively reviewed. The emphasis is on transporters most likely to affect the disposition of inhaled drugs: (1) the ATP-binding cassette (ABC) superfamily which includes the efflux pumps P-glycoprotein (P-gp), multidrug resistance associated proteins (MRPs), breast cancer resistance protein (BCRP) and (2) the solute-linked carrier (SLC and SLCO) superfamily to which belong the organic cation transporter (OCT) family, the peptide transporter (PEPT) family, the organic anion transporter (OAT) family and the organic anion transporting polypeptide (OATP) family. Whenever available, expression and localisation in the intact human tissue are compared with those in animal lungs and respiratory epithelial cell models in vitro. The influence of lung diseases or exogenous agents on transporter expression is also mentioned.
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Affiliation(s)
- Cynthia Bosquillon
- Centre for Biomolecular Sciences, School of Pharmacy, University of Nottingham, University Park, Nottingham NG72RD, United Kingdom.
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37
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Yanagisawa R, Katsuyama Y, Shigemura T, Saito S, Tanaka M, Nakazawa Y, Sakashita K, Shiohara M, Koike K. Engraftment syndrome, but not acute GVHD, younger age, CYP3A5 or MDR1 polymorphisms, increases tacrolimus clearance in pediatric hematopoietic SCT. Bone Marrow Transplant 2010; 46:90-7. [DOI: 10.1038/bmt.2010.64] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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38
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Dexamethasone reduces methotrexate biliary elimination and potentiates its hepatotoxicity in rats. Toxicology 2010; 267:165-71. [DOI: 10.1016/j.tox.2009.11.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2009] [Revised: 11/05/2009] [Accepted: 11/06/2009] [Indexed: 11/21/2022]
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39
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Yin J, Meng Q, Zhang G, Sun Y. Differential methotrexate hepatotoxicity on rat hepatocytes in 2-D monolayer culture and 3-D gel entrapment culture. Chem Biol Interact 2009; 180:368-75. [DOI: 10.1016/j.cbi.2009.04.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2009] [Revised: 04/12/2009] [Accepted: 04/15/2009] [Indexed: 11/24/2022]
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40
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Akagi T, Fukagawa T, Kage Y, To H, Matsunaga N, Koyanagi S, Uchida A, Fujii A, Iba H, Ikemura T, Aramaki H, Higuchi S, Ohdo S. Role of Glucocorticoid Receptor in the Regulation of Cellular Sensitivity to Irinotecan Hydrochloride. J Pharmacol Sci 2009; 109:265-74. [DOI: 10.1254/jphs.08219fp] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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41
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Rassnick K, Bailey D, Flory A, Balkman C, Kiselow M, Intile J, Autio K. Efficacy of Vinblastine for Treatment of Canine Mast Cell Tumors. J Vet Intern Med 2008; 22:1390-6. [DOI: 10.1111/j.1939-1676.2008.0195.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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42
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Szabo DT, Richardson VM, Ross DG, Diliberto JJ, Kodavanti PRS, Birnbaum LS. Effects of perinatal PBDE exposure on hepatic phase I, phase II, phase III, and deiodinase 1 gene expression involved in thyroid hormone metabolism in male rat pups. Toxicol Sci 2008; 107:27-39. [PMID: 18978342 DOI: 10.1093/toxsci/kfn230] [Citation(s) in RCA: 154] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Previous studies demonstrated that perinatal exposure to polybrominated diphenyl ethers (PBDEs), a major class of brominated flame retardants, may affect thyroid hormone (TH) concentrations by inducing hepatic uridinediphosphate-glucoronosyltransferases (UGTs). This study further examines effects of the commercial penta mixture, DE-71, on genes related to TH metabolism at different developmental time points in male rats. DE-71 is predominately composed of PBDE congeners 47, 99, 100, 153, 154 with low levels of brominated dioxin and dibenzofuran contaminants. Pregnant Long-Evans rats were orally administered 1.7 (low), 10.2 (mid), or 30.6 (high) mg/kg/day of DE-71 in corn oil from gestational day (GD) 6 to postnatal day (PND) 21. Serum and liver were collected from male pups at PND 4, 21, and 60. Total serum thyroxine (T(4)) decreased to 57% (mid) and 51% (high) on PND 4, and 46% (mid) dose and 25% (high) on PND 21. Cyp1a1, Cyp2b1/2, and Cyp3a1 enzyme and mRNA expression, regulated by aryl hydrocarbon receptor, constitutive androstane receptor, and pregnane xenobiotic receptor, respectively, increased in a dose-dependent manner. UGT-T(4) enzymatic activity significantly increased, whereas age and dose-dependent effects were observed for Ugt1a6, 1a7, and 2b mRNA. Sult1b1 mRNA expression increased, whereas that of transthyretin (Ttr) decreased as did both the deiodinase I (D1) enzyme activity and mRNA expression. Hepatic efflux transporters Mdr1 (multidrug resistance), Mrp2 (multidrug resistance-associated protein), and Mrp3 and influx transporter Oatp1a4 mRNA expression increased. In this study the most sensitive responses to PBDEs following DE-71 exposure were CYP2B and D1 activities and Cyb2b1/2, d1, Mdr1, Mrp2, and Mrp3 gene expression. All responses were reversible by PND 60. In conclusion, deiodination, active transport, and sulfation, in addition to glucuronidation, may be involved in disruption of TH homeostasis due to perinatal exposure to DE-71 in male rat offspring.
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Affiliation(s)
- David T Szabo
- University of North Carolina Curriculum in Toxicology, United States Environmental Protection Agency, Research Triangle Park, North Carolina 27711, USA
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43
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van de Water FM, Masereeuw R, Russel FGM. Function and Regulation of Multidrug Resistance Proteins (MRPs) in the Renal Elimination of Organic Anions. Drug Metab Rev 2008; 37:443-71. [PMID: 16257830 DOI: 10.1080/03602530500205275] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The reabsorptive and excretory capacity of the kidney has an important influence on the systemic concentration of drugs. Multidrug resistance proteins (MRP/ABCC) expressed in the kidney play a critical role in the tubular efflux of a wide variety of drugs and toxicants, and, in particular, of their negatively charged phase II metabolites. Nine structurally and functionally related MRP family members have been identified (MRP1-9), which differ from each other by their localization, expression levels, and substrate specificity. During altered physiological circumstances, adaptations in these transporters are required to avoid systemic toxicity as well as renal tubular damage. Key players in these events are hormones, protein kinases, nuclear receptors, and disease conditions, which all may affect transporter protein expression levels. This review discusses current knowledge on the renal characteristics of MRP1-9, with specific focus on their regulation.
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Affiliation(s)
- Femke M van de Water
- Department of Pharmacology and Toxicology 233, Nijmegen Centre for Molecular Life Sciences, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
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Micuda S, Fuksa L, Brcakova E, Osterreicher J, Cermanova J, Cibicek N, Mokry J, Staud F, Martinkova J. Zonation of multidrug resistance-associated protein 2 in rat liver after induction with dexamethasone. J Gastroenterol Hepatol 2008; 23:e225-30. [PMID: 17683490 DOI: 10.1111/j.1440-1746.2007.05066.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND AIM The present study was aimed to evaluate the hepatic zonation of multidrug resistance-associated protein 2 (mrp2), an important drug transporter, and its potential changes during the induction of its expression by known inducer, dexamethasone (DEX). METHODS The hepatic expression of mrp2 was studied by immunohistochemistry with consequent quantification by measurement of integral optical densities of mrp2 staining in the periportal and perivenous areas of the liver acinus in control and DEX-pretreated rats (1 mg/kg daily per os for 4 days). Overall changes in mrp2 expression and function produced by DEX were monitored using Western blotting and an in vivo clearance study of endogenous-conjugated bilirubin, a mrp2 substrate. RESULTS In the control animals, a quantitative image analysis revealed the primary periportal localization of mrp2 within the liver acinus with the expression of mrp2 being 16.7-fold of that in the perivenous area. After DEX pretreatment, the expression of mrp2 increased, especially in the perivenous hepatocytes. The overall expression of mrp2 increased 3.2-fold in comparison with the control group. This observation was confirmed by Western blotting, which showed a 1.3-fold increase in the mrp2 protein after DEX pretreatment. The functional consequences of the induced mrp2 protein in the livers of the DEX-pretreated rats were demonstrated by the increased biliary excretion of conjugated bilirubin. CONCLUSION In conclusion, these results indicate the zonation of mrp2 protein expression primarily to periportal hepatocytes. The induction by DEX produced spatially disproportional changes with an increase in the mrp2 protein being most prominent in the perivenous hepatocytes.
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Affiliation(s)
- Stanislav Micuda
- Department of Pharmacology, Charles University in Prague, Faculty of Medicine in Hradec Kralove, Simkova, Czech Republic.
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45
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Narang VS, Fraga C, Kumar N, Shen J, Throm S, Stewart CF, Waters CM. Dexamethasone increases expression and activity of multidrug resistance transporters at the rat blood-brain barrier. Am J Physiol Cell Physiol 2008; 295:C440-50. [PMID: 18524938 DOI: 10.1152/ajpcell.00491.2007] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Brain edema is an important factor leading to morbidity and mortality associated with primary brain tumors. Dexamethasone, a synthetic glucocorticoid, is routinely prescribed with antineoplastic agents to alleviate pain associated with chemotherapy and reduce intracranial pressure. We investigated whether dexamethasone treatment increased the expression and activity of multidrug resistance (MDR) transporters at the blood-brain barrier. Treatment of primary rat brain microvascular endothelial cells with submicromolar concentrations of dexamethasone induced significantly higher levels of drug efflux transporters such as breast cancer resistance protein (abcg2), P-glycoprotein (P-gp; abcb1a/abcb1b), and MDR protein 2 (Mrp2; abcc2) as indicted by protein and mRNA levels as well as by functional activity. The effect of dexamethasone on transporter function was significant within 6 h of treatment, was dose dependent, and was reversible. Dexamethasone-induced upregulation of Bcrp and P-gp expression and function was partially abrogated by the glucocorticoid receptor (GR) antagonist RU486. In contrast, RU486 had no effect on the dexamethasone-induced upregulation of Mrp2, suggesting a GR-independent regulation of Mrp2, and a GR-dependent regulation of P-gp and Bcrp. In addition to the dexamethasone-induced upregulation of MDR transporters, we measured a dose-dependent and reversible increase in the expression of the nuclear transcription factor pregnane xenobiotic receptor (PXR). Administering dexamethasone to rats caused increased expression of PXR in brain microvessels within 24 h. These results suggest that adjuvant therapy with corticosteroids such as dexamethasone in the treatment of brain tumors may increase the expression of MDR transporters at the blood-brain barrier through pathways involving GR and PXR.
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Affiliation(s)
- Vishal S Narang
- Dept. of Physiology, Univ. of Tennessee Health Science Center, 894 Union Ave., Nash 426, Memphis, TN 38163, USA
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46
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Bauer B, Hartz AMS, Lucking JR, Yang X, Pollack GM, Miller DS. Coordinated nuclear receptor regulation of the efflux transporter, Mrp2, and the phase-II metabolizing enzyme, GSTpi, at the blood-brain barrier. J Cereb Blood Flow Metab 2008; 28:1222-34. [PMID: 18349876 DOI: 10.1038/jcbfm.2008.16] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Xenobiotic efflux pumps at the blood-brain barrier are critical modulators of central nervous system pharmacotherapy. We previously found expression of the ligand-activated nuclear receptor, pregnane X receptor (PXR), in rat brain capillaries, and showed increased expression and transport activity of the drug efflux transporter, P-glycoprotein, in capillaries exposed to PXR ligands (pregnenolone-16alpha-carbonitrile (PCN) and dexamethasone) in vitro and in vivo. Here, we show increased protein expression and transport activity of another efflux pump, multidrug resistance-associated protein isoform 2 (Mrp2), in rat brain capillaries after in vitro and in vivo exposure to PCN and dexamethasone. The phase-II drug-metabolizing enzyme, glutathione S-transferase-pi (GSTpi), was found to be expressed in brain capillaries, where it colocalized to a large extent with Mrp2 at the endothelial cell luminal plasma membrane. Like Mrp2, GSTpi protein expression increased with PXR activation. Colocalization and coordinated upregulation suggest functional coupling of the metabolizing enzyme and efflux transporter. These findings indicate that, as in hepatocytes, brain capillaries possess a regulatory network consisting of nuclear receptors, metabolizing enzymes, and efflux transporters, which modulate blood-brain barrier function.
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Affiliation(s)
- Björn Bauer
- Laboratory of Pharmacology and Chemistry, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
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Yang L, Panetta JC, Cai X, Yang W, Pei D, Cheng C, Kornegay N, Pui CH, Relling MV. Asparaginase may influence dexamethasone pharmacokinetics in acute lymphoblastic leukemia. J Clin Oncol 2008; 26:1932-9. [PMID: 18421047 DOI: 10.1200/jco.2007.13.8404] [Citation(s) in RCA: 115] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PURPOSE Dexamethasone is used widely in oncology, but pharmacokinetic studies are lacking. We evaluated dexamethasone pharmacokinetics in children with acute lymphoblastic leukemia. PATIENTS AND METHODS We assessed 214 children with acute lymphoblastic leukemia who received 418 courses of oral dexamethasone (8 mg/m(2)/d) on days 1 and 8 of reinduction. Extensive asparaginase use preceded reinduction in the 101 children in the standard/high-risk treatment arm but not in the 113 children in the low-risk treatment arm. A one-compartment model with first-order absorption and disposition was fit to dexamethasone plasma concentrations by using maximum a posteriori probability estimation; we evaluated covariates by using linear mixed models. RESULTS Interpatient and intrapatient variabilities in apparent clearance were substantial; they were 46% and 53%, respectively. Variability was explained by the serum albumin concentration (P < .0001), concomitant use of fentanyl (P = .008) and ketoconazole (P = .03), and age (P = .006). Apparent clearance was higher in the low-risk arm (P < .001) and was related to a greater serum albumin concentration (P < .001) and to a lower exposure to asparaginase than in the standard/high-risk arm. Hypoalbuminemia, a biomarker of asparaginase activity, was associated with a lower dexamethasone apparent clearance (P = .04) in patients in the standard/high-risk arm that was more pronounced in those not allergic to asparaginase. Ethnicity or gender did not explain apparent clearance variability. CONCLUSION Dexamethasone pharmacokinetics are highly variable and are related to the concurrent use of particular drugs, age, and treatment intensity. Patients allergic to asparaginase may be doubly disadvantaged: they not only suffer from diminished exposure to asparaginase but also, by maintaining high clearance of dexamethasone, may experience fewer antileukemic effects of dexamethasone.
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Affiliation(s)
- Lei Yang
- Department of Pharmaceutical Sciences, St Jude Children's Research Hospital, 332 N Lauderdale, Memphis, TN 38105-2794, USA
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Dinis-Oliveira RJ, Duarte JA, Sánchez-Navarro A, Remião F, Bastos ML, Carvalho F. Paraquat poisonings: mechanisms of lung toxicity, clinical features, and treatment. Crit Rev Toxicol 2008; 38:13-71. [PMID: 18161502 DOI: 10.1080/10408440701669959] [Citation(s) in RCA: 550] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Paraquat dichloride (methyl viologen; PQ) is an effective and widely used herbicide that has a proven safety record when appropriately applied to eliminate weeds. However, over the last decades, there have been numerous fatalities, mainly caused by accidental or voluntary ingestion. PQ poisoning is an extremely frustrating condition to manage clinically, due to the elevated morbidity and mortality observed so far and due to the lack of effective treatments to be used in humans. PQ mainly accumulates in the lung (pulmonary concentrations can be 6 to 10 times higher than those in the plasma), where it is retained even when blood levels start to decrease. The pulmonary effects can be explained by the participation of the polyamine transport system abundantly expressed in the membrane of alveolar cells type I, II, and Clara cells. Further downstream at the toxicodynamic level, the main molecular mechanism of PQ toxicity is based on redox cycling and intracellular oxidative stress generation. With this review we aimed to collect and describe the most pertinent and significant findings published in established scientific publications since the discovery of PQ, focusing on the most recent developments related to PQ lung toxicity and their relevance to the treatment of human poisonings. Considerable space is also dedicated to techniques for prognosis prediction, since these could allow development of rigorous clinical protocols that may produce comparable data for the evaluation of proposed therapies.
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Affiliation(s)
- R J Dinis-Oliveira
- REQUIMTE, Departamento de Toxicologia, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal.
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Nishio N, Katsura T, Inui KI. Thyroid Hormone Regulates the Expression and Function of P-glycoprotein in Caco-2 Cells. Pharm Res 2007; 25:1037-42. [DOI: 10.1007/s11095-007-9495-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2006] [Accepted: 01/26/2007] [Indexed: 10/22/2022]
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Mustacich DJ, Vo AT, Elias VD, Payne K, Sullivan L, Leonard SW, Traber MG. Regulatory mechanisms to control tissue alpha-tocopherol. Free Radic Biol Med 2007; 43:610-8. [PMID: 17640571 PMCID: PMC2693716 DOI: 10.1016/j.freeradbiomed.2007.05.027] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2007] [Revised: 04/25/2007] [Accepted: 05/23/2007] [Indexed: 10/23/2022]
Abstract
To test the hypothesis that hepatic regulation of alpha-tocopherol metabolism would be sufficient to prevent overaccumulation of alpha-tocopherol in extrahepatic tissues and that administration of high doses of alpha-tocopherol would up-regulate extrahepatic xenobiotic pathways, rats received daily subcutaneous injections of either vehicle or 0.5, 1, 2, or 10 mg alpha-tocopherol/100 g body wt for 9 days. Liver alpha-tocopherol increased 15-fold in rats given 10 mg alpha-tocopherol/100 g body wt (mg/100 g) compared with controls. Hepatic alpha-tocopherol metabolites increased with increasing alpha-tocopherol doses, reaching 40-fold in rats given the highest dose. In rats injected with 10 mg/100 g, lung and duodenum alpha-tocopherol concentrations increased 3-fold, whereas alpha-tocopherol concentrations of other extrahepatic tissues increased 2-fold or less. With the exception of muscle, daily administration of less than 2 mg/100 g failed to increase alpha-tocopherol concentrations in extrahepatic tissues. Lung cytochrome P450 3A and 1A levels were unchanged by administration of alpha-tocopherol at any dose. In contrast, lung P-glycoprotein (MDR1) levels increased dose dependently and expression of this xenobiotic transport protein was correlated with lung alpha-tocopherol concentrations (R(2)=0.88, p<0.05). Increased lung MDR1 may provide protection from exposure to environmental toxins by increasing alveolar space alpha-tocopherol.
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Affiliation(s)
- Debbie J Mustacich
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
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