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Álvarez-Fernández L, Blanco-Paniagua E, Millán-García A, Velasco-Díez M, Álvarez AI, Merino G. The ABCG2 protein in vitro transports the xenobiotic thiabendazole and increases the appearance of its residues in milk. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 107:104421. [PMID: 38493880 DOI: 10.1016/j.etap.2024.104421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/13/2024] [Accepted: 03/15/2024] [Indexed: 03/19/2024]
Abstract
Thiabendazole (TBZ) is a broad-spectrum anthelmintic and fungicide used in humans, animals, and agricultural commodities. TBZ residues are present in crops and animal products, including milk, posing a risk to food safety and public health. ABCG2 is a membrane transporter which affects bioavailability and milk secretion of xenobiotics. Therefore, the aim of this work was to characterize the role of ABCG2 in the in vitro transport and secretion into milk of 5-hydroxythiabendazole (5OH-TBZ), the main TBZ metabolite. Using MDCK-II polarized cells transduced with several species variants of ABCG2, we first demonstrated that 5OH-TBZ is efficiently in vitro transported by ABCG2. Subsequently, using Abcg2 knockout mice, we demonstrated that 5OH-TBZ secretion into milk was affected by Abcg2, with a more than 2-fold higher milk concentration and milk to plasma ratio in wild-type mice compared to their Abcg2-/- counterpart.
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Affiliation(s)
- Laura Álvarez-Fernández
- Department of Biomedical Sciences-Physiology, Faculty of Veterinary Medicine, Animal Health Institute (INDEGSAL), 24071, Universidad de León, Campus de Vegazana, León, Spain
| | - Esther Blanco-Paniagua
- Department of Biomedical Sciences-Physiology, Faculty of Veterinary Medicine, Animal Health Institute (INDEGSAL), 24071, Universidad de León, Campus de Vegazana, León, Spain
| | - Alicia Millán-García
- Department of Biomedical Sciences-Physiology, Faculty of Veterinary Medicine, Animal Health Institute (INDEGSAL), 24071, Universidad de León, Campus de Vegazana, León, Spain
| | - Miriam Velasco-Díez
- Department of Biomedical Sciences-Physiology, Faculty of Veterinary Medicine, Animal Health Institute (INDEGSAL), 24071, Universidad de León, Campus de Vegazana, León, Spain
| | - Ana I Álvarez
- Department of Biomedical Sciences-Physiology, Faculty of Veterinary Medicine, Animal Health Institute (INDEGSAL), 24071, Universidad de León, Campus de Vegazana, León, Spain
| | - Gracia Merino
- Department of Biomedical Sciences-Physiology, Faculty of Veterinary Medicine, Animal Health Institute (INDEGSAL), 24071, Universidad de León, Campus de Vegazana, León, Spain.
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2
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Álvarez-Fernández L, Gomez-Gomez A, Haro N, García-Lino AM, Álvarez AI, Pozo OJ, Merino G. ABCG2 transporter plays a key role in the biodistribution of melatonin and its main metabolites. J Pineal Res 2023; 74:e12849. [PMID: 36562106 PMCID: PMC10078363 DOI: 10.1111/jpi.12849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/07/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
The ATP-binding cassette G2 (ABCG2) is an efflux transporter expressed in the apical membrane of cells from a large number of tissues, directly affecting bioavailability, tissue accumulation, and secretion into milk of both xenobiotics and endogenous compounds. The aim of this work was to characterize the role of ABCG2 in the systemic distribution and secretion into milk of melatonin and its main metabolites, 6-hydroxymelatonin, and 6-sulfatoxymelatonin. For this purpose, we first showed that these three molecules are transported by this transporter using in vitro transepithelial assays with MDCK-II polarized cells transduced with different species variants of ABCG2. Second, we tested the in vivo effect of murine Abcg2 in the systemic distribution of melatonin and its metabolites using wild-type and Abcg2-/- mice. Our results show that after oral administration of melatonin, the plasma concentration of melatonin metabolites in Abcg2-/- mice was between 1.5 and 6-fold higher compared to the wild-type mice. We also evaluated in these animals differences in tissue accumulation of melatonin metabolites. The most relevant differences between both types of mice were found for small intestine and kidney (>sixfold increase for 6-sulfatoxymelatonin in Abcg2-/- mice). Finally, melatonin secretion into milk was also affected by the murine Abcg2 transporter, with a twofold higher milk concentration in wild-type compared with Abcg2-/- lactating female mice. In addition, melatonin metabolites showed a higher milk-to-plasma ratio in wild-type mice. Overall, our results show that the ABCG2 transporter plays a critical role in the biodistribution of melatonin and its main metabolites, thereby potentially affecting their biological and therapeutic activity.
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Affiliation(s)
- Laura Álvarez-Fernández
- Department of Biomedical Sciences-Physiology, Animal Health Institute (INDEGSAL), Faculty of Veterinary Medicine, Universidad de León, León, Spain
| | - Alex Gomez-Gomez
- Applied Metabolomics Research Group, IMIM-Hospital del Mar Medical Research Institute, Barcelona, Spain
| | - Noemí Haro
- Applied Metabolomics Research Group, IMIM-Hospital del Mar Medical Research Institute, Barcelona, Spain
| | - Alba M García-Lino
- Department of Biomedical Sciences-Physiology, Animal Health Institute (INDEGSAL), Faculty of Veterinary Medicine, Universidad de León, León, Spain
| | - Ana I Álvarez
- Department of Biomedical Sciences-Physiology, Animal Health Institute (INDEGSAL), Faculty of Veterinary Medicine, Universidad de León, León, Spain
| | - Oscar J Pozo
- Applied Metabolomics Research Group, IMIM-Hospital del Mar Medical Research Institute, Barcelona, Spain
| | - Gracia Merino
- Department of Biomedical Sciences-Physiology, Animal Health Institute (INDEGSAL), Faculty of Veterinary Medicine, Universidad de León, León, Spain
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Nicklisch SC, Hamdoun A. Disruption of small molecule transporter systems by Transporter-Interfering Chemicals (TICs). FEBS Lett 2020; 594:4158-4185. [PMID: 33222203 PMCID: PMC8112642 DOI: 10.1002/1873-3468.14005] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 11/17/2020] [Accepted: 11/17/2020] [Indexed: 12/25/2022]
Abstract
Small molecule transporters (SMTs) in the ABC and SLC families are important players in disposition of diverse endo- and xenobiotics. Interactions of environmental chemicals with these transporters were first postulated in the 1990s, and since validated in numerous in vitro and in vivo scenarios. Recent results on the co-crystal structure of ABCB1 with the flame-retardant BDE-100 demonstrate that a diverse range of man-made and natural toxic molecules, hereafter termed transporter-interfering chemicals (TICs), can directly bind to SMTs and interfere with their function. TIC-binding modes mimic those of substrates, inhibitors, modulators, inducers, and possibly stimulants through direct and allosteric mechanisms. Similarly, the effects could directly or indirectly agonize, antagonize or perhaps even prime the SMT system to alter transport function. Importantly, TICs are distinguished from drugs and pharmaceuticals that interact with transporters in that exposure is unintended and inherently variant. Here, we review the molecular mechanisms of environmental chemical interaction with SMTs, the methodological considerations for their evaluation, and the future directions for TIC discovery.
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Affiliation(s)
- Sascha C.T. Nicklisch
- Department of Environmental Toxicology, University of California, Davis, Davis, CA 95616
| | - Amro Hamdoun
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093-0202
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Garcia-Lino AM, Gomez-Gomez A, Garcia-Mateos D, de la Fuente A, Alvarez AI, Pozo OJ, Merino G. Analysis of the interaction between tryptophan-related compounds and ATP-binding cassette transporter G2 (ABCG2) using targeted metabolomics. Food Chem 2020; 344:128665. [PMID: 33250293 DOI: 10.1016/j.foodchem.2020.128665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 11/04/2020] [Accepted: 11/14/2020] [Indexed: 12/19/2022]
Abstract
ATP-binding cassette transporter G2 (ABCG2) is involved in the secretion of several compounds in milk. The in vitro and in vivo interactions between tryptophan-related compounds and ABCG2 were investigated. The tryptophan metabolome was determined by liquid chromatography-tandem mass spectrometry in milk and plasma from wild-type and Abcg2-/- mice as well as dairy cows carrying the ABCG2 Y581S polymorphism (Y/S) and noncarrier animals (Y/Y). The milk-to-plasma ratios of tryptophan, kynurenic acid, kynurenine, anthranilic acid, and xanthurenic acid were higher in wild-type mice than in Abcg2-/- mice. The ratio was 2-fold higher in Y/S than in Y/Y cows for kynurenine. In vitro transport assays confirmed that some of these compounds were in vitro substrates of the transporter and validated the differences observed between the two variants of the bovine protein. These findings show that the secretion of metabolites belonging to the kynurenine pathway into milk is mediated by ABCG2.
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Affiliation(s)
- Alba M Garcia-Lino
- Department of Biomedical Sciences-Physiology, Faculty of Veterinary Medicine, Animal Health Institute (INDEGSAL), University of Leon, Campus de Vegazana, 24071 Leon, Spain
| | - Alex Gomez-Gomez
- Integrative Pharmacology and Systems Neuroscience Group, IMIM-Hospital del Mar Medical Research Institute, 88 Doctor Aiguader, 08003 Barcelona, Spain
| | - Dafne Garcia-Mateos
- Department of Biomedical Sciences-Physiology, Faculty of Veterinary Medicine, Animal Health Institute (INDEGSAL), University of Leon, Campus de Vegazana, 24071 Leon, Spain
| | - Alvaro de la Fuente
- Department of Biomedical Sciences-Physiology, Faculty of Veterinary Medicine, Animal Health Institute (INDEGSAL), University of Leon, Campus de Vegazana, 24071 Leon, Spain
| | - Ana I Alvarez
- Department of Biomedical Sciences-Physiology, Faculty of Veterinary Medicine, Animal Health Institute (INDEGSAL), University of Leon, Campus de Vegazana, 24071 Leon, Spain
| | - Oscar J Pozo
- Integrative Pharmacology and Systems Neuroscience Group, IMIM-Hospital del Mar Medical Research Institute, 88 Doctor Aiguader, 08003 Barcelona, Spain
| | - Gracia Merino
- Department of Biomedical Sciences-Physiology, Faculty of Veterinary Medicine, Animal Health Institute (INDEGSAL), University of Leon, Campus de Vegazana, 24071 Leon, Spain.
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Transporters in the Mammary Gland-Contribution to Presence of Nutrients and Drugs into Milk. Nutrients 2019; 11:nu11102372. [PMID: 31590349 PMCID: PMC6836069 DOI: 10.3390/nu11102372] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 09/19/2019] [Accepted: 09/25/2019] [Indexed: 02/07/2023] Open
Abstract
A large number of nutrients and bioactive ingredients found in milk play an important role in the nourishment of breast-fed infants and dairy consumers. Some of these ingredients include physiologically relevant compounds such as vitamins, peptides, neuroactive compounds and hormones. Conversely, milk may contain substances-drugs, pesticides, carcinogens, environmental pollutants-which have undesirable effects on health. The transfer of these compounds into milk is unavoidably linked to the function of transport proteins. Expression of transporters belonging to the ATP-binding cassette (ABC-) and Solute Carrier (SLC-) superfamilies varies with the lactation stages of the mammary gland. In particular, Organic Anion Transporting Polypeptides 1A2 (OATP1A2) and 2B1 (OATP2B1), Organic Cation Transporter 1 (OCT1), Novel Organic Cation Transporter 1 (OCTN1), Concentrative Nucleoside Transporters 1, 2 and 3 (CNT1, CNT2 and CNT3), Peptide Transporter 2 (PEPT2), Sodium-dependent Vitamin C Transporter 2 (SVCT2), Multidrug Resistance-associated Protein 5 (ABCC5) and Breast Cancer Resistance Protein (ABCG2) are highly induced during lactation. This review will focus on these transporters overexpressed during lactation and their role in the transfer of products into the milk, including both beneficial and harmful compounds. Furthermore, additional factors, such as regulation, polymorphisms or drug-drug interactions will be described.
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Virkel G, Ballent M, Lanusse C, Lifschitz A. Role of ABC Transporters in Veterinary Medicine: Pharmaco- Toxicological Implications. Curr Med Chem 2019; 26:1251-1269. [DOI: 10.2174/0929867325666180201094730] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 11/14/2017] [Accepted: 12/22/2017] [Indexed: 01/10/2023]
Abstract
Unlike physicians, veterinary practitioners must deal with a number of animal species with crucial differences in anatomy, physiology and metabolism. Accordingly, the pharmacokinetic behaviour, the clinical efficacy and the adverse or toxic effects of drugs may differ across domestic animals. Moreover, the use of drugs in food-producing species may impose a risk for humans due to the generation of chemical residues in edible products, a major concern for public health and consumer's safety. As is clearly known in human beings, the ATP binding cassette (ABC) of transport proteins may influence the bioavailability and elimination of numerous drugs and other xenobiotics in domestic animals as well. A number of drugs, currently available in the veterinary market, are substrates of one or more transporters. Therefore, significant drug-drug interactions among ABC substrates may have unpredictable pharmacotoxicological consequences in different species of veterinary interest. In this context, different investigations revealed the major relevance of P-gp and other transport proteins, like breast cancer resistance protein (BCRP) and multidrug resistance-associated proteins (MRPs), in both companion and livestock animals. Undoubtedly, the discovery of the ABC transporters and the deep understanding of their physiological role in the different species introduced a new paradigm into the veterinary pharmacology. This review focuses on the expression and function of the major transport proteins expressed in species of veterinary interest, and their impact on drug disposition, efficacy and toxicity.
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Affiliation(s)
- Guillermo Virkel
- Laboratorio de Farmacologia, Centro de Investigacion Veterinaria de Tandil (CIVETAN-CONICETCICPBA), Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires (FCV-UNCPBA), Campus Universitario (Los Ombues y Reforma Universitaria), (7000) Tandil, Prov. de Buenos Aires, Argentina
| | - Mariana Ballent
- Laboratorio de Farmacologia, Centro de Investigacion Veterinaria de Tandil (CIVETAN-CONICETCICPBA), Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires (FCV-UNCPBA), Campus Universitario (Los Ombues y Reforma Universitaria), (7000) Tandil, Prov. de Buenos Aires, Argentina
| | - Carlos Lanusse
- Laboratorio de Farmacologia, Centro de Investigacion Veterinaria de Tandil (CIVETAN-CONICETCICPBA), Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires (FCV-UNCPBA), Campus Universitario (Los Ombues y Reforma Universitaria), (7000) Tandil, Prov. de Buenos Aires, Argentina
| | - Adrián Lifschitz
- Laboratorio de Farmacologia, Centro de Investigacion Veterinaria de Tandil (CIVETAN-CONICETCICPBA), Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires (FCV-UNCPBA), Campus Universitario (Los Ombues y Reforma Universitaria), (7000) Tandil, Prov. de Buenos Aires, Argentina
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7
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Garcia-Mateos D, Garcia-Lino AM, Alvarez-Fernandez I, Blanco-Paniagua E, de la Fuente A, Alvarez AI, Merino G. Role of ABCG2 in Secretion into Milk of the Anti-Inflammatory Flunixin and Its Main Metabolite: In Vitro-In Vivo Correlation in Mice and Cows. Drug Metab Dispos 2019; 47:516-524. [PMID: 30858238 DOI: 10.1124/dmd.118.085506] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 03/07/2019] [Indexed: 01/10/2023] Open
Abstract
Flunixin meglumine is a nonsteroidal anti-inflammatory drug (NSAID) widely used in veterinary medicine. It is indicated to treat inflammatory processes, pain, and pyrexia in farm animals. In addition, it is one of the few NSAIDs approved for use in dairy cows, and consequently gives rise to concern regarding its milk residues. The ABCG2 efflux transporter is induced during lactation in the mammary gland and plays an important role in the secretion of different compounds into milk. Previous reports have demonstrated that bovine ABCG2 Y581S polymorphism increases fluoroquinolone levels in cow milk. However, the implication of this transporter in the secretion into milk of anti-inflammatory drugs has not yet been studied. The objective of this work was to study the role of ABCG2 in the secretion into milk of flunixin and its main metabolite, 5-hydroxyflunixin, using Abcg2(-/-) mice, and to investigate the implication of the Y581S polymorphism in the secretion of these compounds into cow milk. Correlation with the in vitro situation was assessed by in vitro transport assays using Madin-Darby canine kidney II cells overexpressing murine and the two variants of the bovine transporter. Our results show that flunixin and 5-hydroxyflunixin are transported by ABCG2 and that this protein is responsible for their secretion into milk. Moreover, the Y581S polymorphism increases flunixin concentration into cow milk, but it does not affect milk secretion of 5-hydroxyflunixin. This result correlates with the differences in the in vitro transport of flunixin between the two bovine variants. These findings are relevant to the therapeutics of anti-inflammatory drugs.
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Affiliation(s)
- Dafne Garcia-Mateos
- Department of Biomedical Sciences-Physiology, Veterinary Faculty (D.G.-M., A.M.G.-L., I.A.-F., A.I.A., G.M.), and Instituto de Desarrollo Ganadero y Sanidad Animal (D.G.-M., A.M.G.-L., I.A.-F., E.B.-P., A.F., A.I.A., G.M.), Universidad de León, Campus de Vegazana, Leon, Spain
| | - Alba Maria Garcia-Lino
- Department of Biomedical Sciences-Physiology, Veterinary Faculty (D.G.-M., A.M.G.-L., I.A.-F., A.I.A., G.M.), and Instituto de Desarrollo Ganadero y Sanidad Animal (D.G.-M., A.M.G.-L., I.A.-F., E.B.-P., A.F., A.I.A., G.M.), Universidad de León, Campus de Vegazana, Leon, Spain
| | - Indira Alvarez-Fernandez
- Department of Biomedical Sciences-Physiology, Veterinary Faculty (D.G.-M., A.M.G.-L., I.A.-F., A.I.A., G.M.), and Instituto de Desarrollo Ganadero y Sanidad Animal (D.G.-M., A.M.G.-L., I.A.-F., E.B.-P., A.F., A.I.A., G.M.), Universidad de León, Campus de Vegazana, Leon, Spain
| | - Esther Blanco-Paniagua
- Department of Biomedical Sciences-Physiology, Veterinary Faculty (D.G.-M., A.M.G.-L., I.A.-F., A.I.A., G.M.), and Instituto de Desarrollo Ganadero y Sanidad Animal (D.G.-M., A.M.G.-L., I.A.-F., E.B.-P., A.F., A.I.A., G.M.), Universidad de León, Campus de Vegazana, Leon, Spain
| | - Alvaro de la Fuente
- Department of Biomedical Sciences-Physiology, Veterinary Faculty (D.G.-M., A.M.G.-L., I.A.-F., A.I.A., G.M.), and Instituto de Desarrollo Ganadero y Sanidad Animal (D.G.-M., A.M.G.-L., I.A.-F., E.B.-P., A.F., A.I.A., G.M.), Universidad de León, Campus de Vegazana, Leon, Spain
| | - Ana Isabel Alvarez
- Department of Biomedical Sciences-Physiology, Veterinary Faculty (D.G.-M., A.M.G.-L., I.A.-F., A.I.A., G.M.), and Instituto de Desarrollo Ganadero y Sanidad Animal (D.G.-M., A.M.G.-L., I.A.-F., E.B.-P., A.F., A.I.A., G.M.), Universidad de León, Campus de Vegazana, Leon, Spain
| | - Gracia Merino
- Department of Biomedical Sciences-Physiology, Veterinary Faculty (D.G.-M., A.M.G.-L., I.A.-F., A.I.A., G.M.), and Instituto de Desarrollo Ganadero y Sanidad Animal (D.G.-M., A.M.G.-L., I.A.-F., E.B.-P., A.F., A.I.A., G.M.), Universidad de León, Campus de Vegazana, Leon, Spain
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Brito AF, Zang Y. A Review of Lignan Metabolism, Milk Enterolactone Concentration, and Antioxidant Status of Dairy Cows Fed Flaxseed. Molecules 2018; 24:E41. [PMID: 30583523 PMCID: PMC6337492 DOI: 10.3390/molecules24010041] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 12/16/2018] [Accepted: 12/18/2018] [Indexed: 12/31/2022] Open
Abstract
Lignans are polyphenolic compounds with a wide spectrum of biological functions including antioxidant, anti-inflammatory, and anticarcinogenic activities, therefore, there is an increasing interest in promoting the inclusion of lignan-rich foods in humans' diets. Flaxseed is the richest source of the lignan secoisolariciresinol diglucoside-a compound found in the outer fibrous-containing layers of flax. The rumen appears to be the major site for the conversion of secoisolariciresinol diglucoside to the enterolignans enterodiol and enterolactone, but only enterolactone has been detected in milk of dairy cows fed flaxseed products (whole seeds, hulls, meal). However, there is limited information regarding the ruminal microbiota species involved in the metabolism of secoisolariciresinol diglucoside. Likewise, little is known about how dietary manipulation such as varying the nonstructural carbohydrate profile of rations affects milk enterolactone in dairy cows. Our review covers the gastrointestinal tract metabolism of lignans in humans and animals and presents an in-depth assessment of research that have investigated the impacts of flaxseed products on milk enterolactone concentration and animal health. It also addresses the pharmacokinetics of enterolactone consumed through milk, which may have implications to ruminants and humans' health.
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Affiliation(s)
- André F Brito
- Department of Agriculture, Nutrition, and Food Systems, University of New Hampshire, Durham, NH 03824, USA.
| | - Yu Zang
- Department of Agriculture, Nutrition, and Food Systems, University of New Hampshire, Durham, NH 03824, USA.
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9
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Wang Q, Bovenhuis H. Genome-wide association study for milk infrared wavenumbers. J Dairy Sci 2018; 101:2260-2272. [DOI: 10.3168/jds.2017-13457] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 11/20/2017] [Indexed: 12/28/2022]
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10
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Lopdell TJ, Tiplady K, Struchalin M, Johnson TJJ, Keehan M, Sherlock R, Couldrey C, Davis SR, Snell RG, Spelman RJ, Littlejohn MD. DNA and RNA-sequence based GWAS highlights membrane-transport genes as key modulators of milk lactose content. BMC Genomics 2017; 18:968. [PMID: 29246110 PMCID: PMC5731188 DOI: 10.1186/s12864-017-4320-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 11/21/2017] [Indexed: 12/30/2022] Open
Abstract
Background Lactose provides an easily-digested energy source for neonates, and is the primary carbohydrate in milk in most species. Bovine lactose is also a key component of many human food products. However, compared to analyses of other milk components, the genetic control of lactose has been little studied. Here we present the first GWAS focussed on analysis of milk lactose traits. Results Using a discovery population of 12,000 taurine dairy cattle, we detail 27 QTL for lactose concentration and yield, and subsequently validate the effects of 26 of these loci in a distinct population of 18,000 cows. We next present data implicating causative genes and variants for these QTL. Fine mapping of these regions using imputed, whole genome sequence-resolution genotypes reveals protein-coding candidate causative variants affecting the ABCG2, DGAT1, STAT5B, KCNH4, NPFFR2 and RNF214 genes. Eleven of the remaining QTL appear to be driven by regulatory effects, suggested by the presence of co-locating, co-segregating eQTL discovered using mammary RNA sequence data from a population of 357 lactating cows. Pathway analysis of genes representing all lactose-associated loci shows significant enrichment of genes located in the endoplasmic reticulum, with functions related to ion channel activity mediated through the LRRC8C, P2RX4, KCNJ2 and ANKH genes. A number of the validated QTL are also found to be associated with additional milk volume, fat and protein phenotypes. Conclusions Overall, these findings highlight novel candidate genes and variants involved in milk lactose regulation, whose impacts on membrane transport mechanisms reinforce the key osmo-regulatory roles of lactose in milk. Electronic supplementary material The online version of this article (doi:10.1186/s12864-017-4320-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Thomas J Lopdell
- Research and Development, Livestock Improvement Corporation, Ruakura Road, Newstead, Hamilton, New Zealand.,School of Biological Sciences, University of Auckland, Symonds Street, Auckland, New Zealand
| | - Kathryn Tiplady
- Research and Development, Livestock Improvement Corporation, Ruakura Road, Newstead, Hamilton, New Zealand
| | - Maksim Struchalin
- Research and Development, Livestock Improvement Corporation, Ruakura Road, Newstead, Hamilton, New Zealand
| | - Thomas J J Johnson
- Research and Development, Livestock Improvement Corporation, Ruakura Road, Newstead, Hamilton, New Zealand
| | - Michael Keehan
- Research and Development, Livestock Improvement Corporation, Ruakura Road, Newstead, Hamilton, New Zealand
| | - Ric Sherlock
- Research and Development, Livestock Improvement Corporation, Ruakura Road, Newstead, Hamilton, New Zealand
| | - Christine Couldrey
- Research and Development, Livestock Improvement Corporation, Ruakura Road, Newstead, Hamilton, New Zealand
| | - Stephen R Davis
- Research and Development, Livestock Improvement Corporation, Ruakura Road, Newstead, Hamilton, New Zealand
| | - Russell G Snell
- School of Biological Sciences, University of Auckland, Symonds Street, Auckland, New Zealand
| | - Richard J Spelman
- Research and Development, Livestock Improvement Corporation, Ruakura Road, Newstead, Hamilton, New Zealand
| | - Mathew D Littlejohn
- Research and Development, Livestock Improvement Corporation, Ruakura Road, Newstead, Hamilton, New Zealand.
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11
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Manzini L, Halwachs S, Girolami F, Badino P, Honscha W, Nebbia C. Interaction of mammary bovine ABCG2 with AFB1 and its metabolites and regulation by PCB 126 in a MDCKII in vitro model. J Vet Pharmacol Ther 2017; 40:591-598. [PMID: 28198024 DOI: 10.1111/jvp.12397] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 12/23/2016] [Indexed: 12/27/2022]
Abstract
The ATP-binding cassette efflux transporter ABCG2 plays a key role in the mammary excretion of drugs and toxins in humans and animals. Aflatoxins (AF) are worldwide contaminants of food and feed commodities, while PCB 126 is a dioxin-like PCB which may contaminate milk and dairy products. Both compounds are known human carcinogens. The interactions between AF and bovine ABCG2 (bABCG2) as well as the effects of PCB 126 on its efflux activity have been investigated by means of the Hoechst H33342 transport assay in MDCKII cells stably expressing mammary bABCG2. Both AFB1 and its main milk metabolite AFM1 showed interaction with bABCG2 even at concentrations approaching the legal limits in feed and food commodities. Moreover, PCB 126 significantly enhanced bABCG2 functional activity. Specific inhibitors of either AhR (CH233191) or ABCG2 (Ko143) were able to reverse the PCB 126-induced increase in bABCG2 transport activity, showing the specific upregulation of the efflux protein by the AhR pathway. The incubation of PCB 126-pretreated cells with AFM1 was able to substantially reverse such effect, with still unknown mechanism(s). Overall, results from this study point to AFB1 and AFM1 as likely bABCG2 substrates. The PCB 126-dependent increased activity of the transporter could enhance the ABCG2-mediated excretion into dairy milk of chemicals (i.e., drugs and toxins) potentially harmful to neonates and consumers.
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Affiliation(s)
- L Manzini
- Department of Veterinary Sciences, University of Torino, Grugliasco, Italy
| | - S Halwachs
- Institute of Veterinary Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - F Girolami
- Department of Veterinary Sciences, University of Torino, Grugliasco, Italy
| | - P Badino
- Department of Veterinary Sciences, University of Torino, Grugliasco, Italy
| | - W Honscha
- Institute of Veterinary Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - C Nebbia
- Department of Veterinary Sciences, University of Torino, Grugliasco, Italy
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Otero JA, García-Mateos D, de la Fuente A, Prieto JG, Álvarez AI, Merino G. Effect of bovine ABCG2 Y581S polymorphism on concentrations in milk of enrofloxacin and its active metabolite ciprofloxacin. J Dairy Sci 2016; 99:5731-5738. [PMID: 27157572 DOI: 10.3168/jds.2015-10593] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 03/24/2016] [Indexed: 01/16/2023]
Abstract
The ATP-binding cassette transporter G2 (ABCG2) is involved in the secretion of several drugs into milk. The bovine Y581S ABCG2 polymorphism increases the secretion into milk of the fluoroquinolone danofloxacin in Holstein cows. Danofloxacin and enrofloxacin are the fluoroquinolones most widely used in veterinary medicine. Both enrofloxacin (ENRO) and its active metabolite ciprofloxacin (CIPRO) reach milk at relatively high concentrations. The aim of this work was to study the effect of the bovine Y581S ABCG2 polymorphism on in vitro transport as well as on concentrations in plasma and in milk of ENRO and CIPRO. Experiments using cells overexpressing bovine ABCG2 showed the effects of ABCG2 on the transport of CIPRO, demonstrating more efficient in vitro transport of this antimicrobial by the S581 variant as compared with the Y581 variant. Animal studies administering 2.5mg/kg of ENRO subcutaneously to Y/Y 581 and Y/S 581 cows revealed that concentrations in plasma of ENRO and CIPRO were significantly lower in Y/S animals. Regardless of the genotype, the antimicrobial profile in milk after the administration of ENRO was predominantly of CIPRO. With respect to the genotype effects on the amounts of drugs present in milk, AUC0-24 values were more than 1.2 times higher in Y/S cows for ENRO and 2.2 times for CIPRO, indicating a greater capacity of Y581S to transfer these drugs into milk. These results emphasize the clinical relevance of this polymorphism as a factor affecting the concentrations in plasma and in milk of drugs of importance in veterinary medicine.
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Affiliation(s)
- J A Otero
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain; Instituto de Desarrollo Ganadero y Sanidad Animal (INDEGSAL), University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - D García-Mateos
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - A de la Fuente
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - J G Prieto
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain; Instituto de Biomedicina (IBIOMED), University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - A I Álvarez
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - G Merino
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain; Instituto de Desarrollo Ganadero y Sanidad Animal (INDEGSAL), University of Leon, Campus de Vegazana 24071, Leon, Spain.
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13
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Mahnke H, Ballent M, Baumann S, Imperiale F, von Bergen M, Lanusse C, Lifschitz AL, Honscha W, Halwachs S. The ABCG2 Efflux Transporter in the Mammary Gland Mediates Veterinary Drug Secretion across the Blood-Milk Barrier into Milk of Dairy Cows. ACTA ACUST UNITED AC 2016; 44:700-8. [PMID: 26956640 DOI: 10.1124/dmd.115.068940] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 03/07/2016] [Indexed: 12/23/2022]
Abstract
In human and mice ATP-binding cassette efflux transporter ABCG2 represents the main route for active drug transport into milk. However, there is no detailed information on the role of ABCG2 in drug secretion and accumulation in milk of dairy animals. We therefore examined ABCG2-mediated drug transport in the bovine mammary gland by parallel pharmacokinetic studies in lactating Jersey cows and in vitro flux studies using the anthelmintic drug monepantel (MNP) as representative bovine ABCG2 (bABCG2) drug substrate. Animals received MNP (Zolvix, Novartis Animal Health Inc.) once (2.5 mg/kg per os) and the concentrations of MNP and the active MNP metabolite MNPSO2 were assessed by high-performance liquid chromatography. Compared with the parent drug MNP, we detected higher MNPSO2 plasma concentrations (expressed as area under the concentration-versus-time curve). Moreover, we observed MNPSO2 excretion into milk of dairy cows with a high milk-to-plasma ratio of 6.75. In mechanistic flux assays, we determined a preferential time-dependent basolateral-to-apical (B > A) MNPSO2 transport across polarized Madin-Darby canine kidney II cells-bABCG2 monolayers using liquid chromatography coupled with tandem mass spectrometry analysis. The B > A MNPSO2 transport was significantly inhibited by the ABCG2 inhibitor fumitremorgin C in bABCG2- but not in mock-transduced MDCKII cells. Additionally, the antibiotic drug enrofloxacin, the benzimidazole anthelmintic oxfendazole and the macrocyclic lactone anthelmintic moxidectin caused a reduction in the MNPSO2(B > A) net efflux. Altogether, this study indicated that therapeutically relevant drugs like the anthelmintic MNP represent substrates of the bovine mammary ABCG2 transporter and may thereby be actively concentrated in dairy milk.
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Affiliation(s)
- Hanna Mahnke
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Mariana Ballent
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Sven Baumann
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Fernanda Imperiale
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Martin von Bergen
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Carlos Lanusse
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Adrian L Lifschitz
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Walther Honscha
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Sandra Halwachs
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
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14
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Effect of bovine ABCG2 polymorphism Y581S SNP on secretion into milk of enterolactone, riboflavin and uric acid. Animal 2016; 10:238-47. [DOI: 10.1017/s1751731115002141] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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15
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A model of secreting murine mammary epithelial HC11 cells comprising endogenous Bcrp/Abcg2 expression and function. Cell Biol Toxicol 2015; 31:111-20. [DOI: 10.1007/s10565-015-9298-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 03/09/2015] [Indexed: 12/30/2022]
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16
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Otero JA, Barrera B, de la Fuente A, Prieto JG, Marqués M, Álvarez AI, Merino G. Short communication: The gain-of-function Y581S polymorphism of the ABCG2 transporter increases secretion into milk of danofloxacin at the therapeutic dose for mastitis treatment. J Dairy Sci 2014; 98:312-7. [PMID: 25465626 DOI: 10.3168/jds.2014-8288] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 09/23/2014] [Indexed: 01/16/2023]
Abstract
The ATP-binding cassette transporter ABCG2 restricts the exposure of certain drugs and natural compounds in different tissues and organs. Its expression in the mammary gland is induced during lactation and is responsible for the active secretion of many compounds into milk, including antimicrobial agents. This particular function of ABCG2 may affect drug efficacy against mastitis and the potential presence of drug residues in the milk. Previous in vitro and in vivo studies showed increased transport of several compounds, including fluoroquinolones, by the bovine ABCG2 Y581S polymorphism. Our main purpose was to study the potential effect of this bovine ABCG2 polymorphism on the secretion into milk of the antimicrobial danofloxacin administered at the therapeutic dose of 6mg/kg used for mastitis treatment. In addition, the effect of this polymorphism on the relative mRNA and protein levels of ABCG2 by quantitative real-time PCR and Western blot were studied. Danofloxacin 18% (6mg/kg) was administered to 6 Y/Y homozygous and 5 Y/S heterozygous cows. Danofloxacin levels in milk and milk-to-plasma concentration ratios were almost 1.5- and 2-fold higher, respectively, in Y/S cows compared with the Y/Y cows, showing a higher capacity of this variant to transport danofloxacin into milk. Furthermore, the higher activity of this polymorphism is not linked to higher ABCG2 mRNA or protein levels. These results demonstrate the relevant effect of the Y581S polymorphism of the bovine ABCG2 transporter in the secretion into milk of danofloxacin after administration of 6mg/kg, with potentially important consequences for mastitis treatment and for milk residue handling.
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Affiliation(s)
- J A Otero
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain; Instituto de Desarrollo Ganadero y Sanidad Animal (INDEGSAL), University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - B Barrera
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain; Instituto de Desarrollo Ganadero y Sanidad Animal (INDEGSAL), University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - A de la Fuente
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - J G Prieto
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain; Instituto de Biomedicina (IBIOMED), University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - M Marqués
- Instituto de Desarrollo Ganadero y Sanidad Animal (INDEGSAL), University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - A I Álvarez
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - G Merino
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain; Instituto de Desarrollo Ganadero y Sanidad Animal (INDEGSAL), University of Leon, Campus de Vegazana 24071, Leon, Spain.
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17
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González-Lobato L, Real R, Herrero D, de la Fuente A, Prieto J, Marqués M, Álvarez A, Merino G. Novelin vitrosystems for prediction of veterinary drug residues in ovine milk and dairy products. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2014; 31:1026-37. [DOI: 10.1080/19440049.2014.908261] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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18
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Miguel V, Otero JA, García-Villalba R, Tomás-Barberán F, Espín JC, Merino G, Álvarez AI. Role of ABCG2 in transport of the mammalian lignan enterolactone and its secretion into milk in Abcg2 knockout mice. Drug Metab Dispos 2014; 42:943-6. [PMID: 24568887 DOI: 10.1124/dmd.113.055970] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Lignans are phytoestrogens that are metabolized by the gut microbiota to enterodiol and enterolactone, the main biologically active enterolignans. Substantial interindividual variation in plasma concentration and urinary excretion of enterolignans has been reported, this being determined, at least in part, by the intake of lignan precursors, the gut microbiota, and the host's phase 2 conjugating enzyme activity. However, the role of ATP-binding cassette (ABC) transporters in the transport and disposition of enterolactone has not been reported so far. Active transport assays using parental and Madin-Darby canine kidney epithelial cells transduced with murine and human ABCG2 showed a significant increase in apically directed translocation of enterolactone in transduced cells, which was confirmed by using the selective ABCG2 inhibitor Ko143. In addition, enterolactone also inhibited transport of the antineoplastic agent mitoxantrone as a model substrate, with inhibition percentages of almost 40% at 200 μM for human ABCG2. Furthermore, the endogenous levels in plasma and milk of enterolactone in wild-type and Abcg2((-/-)) knockout female mice were analyzed. The milk/plasma ratio decreased significantly in the Abcg2((-/-)) phenotype, as compared with the wild-type mouse group (0.4 ± 0.1 as against 6.4 ± 2.6). This paper is the first to report that enterolactone is a transported substrate and therefore most probably a competitive inhibitor of ABCG2, which suggests it has a role in the interindividual variations in the disposition of enterolactone and its secretion into milk. The inhibitory activity identified provides a solid basis for further investigation in possible food-drug interactions.
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Affiliation(s)
- Verónica Miguel
- Department of Biomedical Sciences, Physiology, Veterinary Faculty (V.M., A.I.A., J.A.O., G.M.) and Instituto de Desarrollo Ganadero y Sanidad Animal (J.A.O., G.M.), University of Leon, Leon, Spain; and Research Group on Quality, Safety, and Bioactivity of Plant Foods, Centro de Edafología y Biología Aplicada del Segura, Murcia, Spain (R.G.-V., F.T.-B., J.C.E.)
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19
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Barrera B, González-Lobato L, Otero JA, Real R, Prieto JG, Álvarez AI, Merino G. Effects of triclabendazole on secretion of danofloxacin and moxidectin into the milk of sheep: Role of triclabendazole metabolites as inhibitors of the ruminant ABCG2 transporter. Vet J 2013; 198:429-36. [DOI: 10.1016/j.tvjl.2013.07.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 07/18/2013] [Accepted: 07/28/2013] [Indexed: 01/16/2023]
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20
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Reply to the comment of Ana I. Alvarez and Gracia Merino regarding "Assessment of ABCG2-mediated transport of xenobiotics across the blood-milk barrier of dairy animals using a new MDCKII in vitro model" by Wassermann et al. 2013. Arch Toxicol 2013; 87:1865-7. [PMID: 24043267 DOI: 10.1007/s00204-013-1126-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Accepted: 09/05/2013] [Indexed: 10/26/2022]
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Alvarez AI, Merino G. Comments on Wassermann et al. (2013): Assessment of ABCG2-mediated transport of xenobiotics across the blood-milk barrier of dairy animals using a new MDCKII in vitro model. Arch Toxicol 2013; 87:1863-4. [PMID: 23995093 DOI: 10.1007/s00204-013-1121-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 08/22/2013] [Indexed: 11/26/2022]
Affiliation(s)
- Ana I Alvarez
- Department of Biomedical Sciences-Physiology, University of Leon, 24071, Leon, Spain
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22
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González-Sarrías A, Miguel V, Merino G, Lucas R, Morales JC, Tomás-Barberán F, Alvarez AI, Espín JC. The gut microbiota ellagic acid-derived metabolite urolithin A and its sulfate conjugate are substrates for the drug efflux transporter breast cancer resistance protein (ABCG2/BCRP). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:4352-4359. [PMID: 23586460 DOI: 10.1021/jf4007505] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The breast cancer resistance protein (BCRP/ABCG2) is a drug efflux transporter that can affect the pharmacological and toxicological properties of many molecules. Urolithins, metabolites produced by the gut microbiota from ellagic acid (EA) and ellagitannins, have been acknowledged with in vivo anti-inflammatory and cancer chemopreventive properties. This study evaluated whether urolithins (Uro-A, -B, -C, and -D) and their main phase II metabolites Uro-A sulfate, Uro-A glucuronide, and Uro-B glucuronide as well as their precursor EA were substrates for ABCG2/BCRP. Parental and Bcrp1-transduced MDCKII cells were used for active transport assays. Uro-A and, to a lesser extent, Uro-A sulfate showed a significant increase in apically directed translocation in Bcrp1-transduced cells. Bcrp1 did not show affinity for the rest of the tested compounds. Data were confirmed for murine, human, bovine, and ovine BCRP-transduced subclones as well as with the use of the selective BCRP inhibitor Ko143. The transport inhibition by Uro-A was analyzed by flow cytometry compared to Ko143 using the antineoplastic agent mitoxantrone as a model substrate. Results showed that Uro-A was able to inhibit mitoxantrone transport in a dose-dependent manner. This study reports for the first time that Uro-A and its sulfate conjugate are ABCG2/BCRP substrates. The results suggest that physiologically relevant concentrations of these gut microbiota-derived metabolites could modulate ABCG2/BCRP-mediated transport processes and mechanisms of cancer drug resistance. Further in vivo investigations are warranted.
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Affiliation(s)
- Antonio González-Sarrías
- Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS-CSIC, Campus de Espinardo, Murcia, Spain
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23
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Perez M, Otero JA, Barrera B, Prieto JG, Merino G, Alvarez AI. Inhibition of ABCG2/BCRP transporter by soy isoflavones genistein and daidzein: effect on plasma and milk levels of danofloxacin in sheep. Vet J 2013; 196:203-8. [PMID: 23083838 DOI: 10.1016/j.tvjl.2012.09.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Revised: 09/11/2012] [Accepted: 09/17/2012] [Indexed: 01/07/2023]
Abstract
Danofloxacin is a synthetic fluoroquinolone antibacterial agent and a substrate for ATP-binding cassette transporter G2/breast cancer resistance protein (ABCG2/BCRP). This protein actively extrudes drugs from cells in the intestine, liver, kidney, and other organs, such as the mammary gland. The purpose of this study was to determine whether genistein and daidzein, isoflavones present in soy and known inhibitors of ABCG2, could diminish danofloxacin secretion into milk. The results obtained from BCRP-transduced MDCK-II cells (Mardin-Darby canine kidney) showed that both isoflavones efficiently inhibited the in vitro transport of the drug. In addition, danofloxacin transport into milk was studied in Assaf sheep. The experimental design with ewes (n = 18) included ewes fed with standard forage, soy-enriched forage for 15 days prior to the experiment or standard forage paired with orally administered exogenous genistein and daidzein. The danofloxacin levels in the milk of ewes in the soy-enriched diet group were decreased. The area under concentration-time curve AUC (0-24 h) was 9.3 ± 4.6 vs. 16.58 ± 4.44 μgh/mL in the standard forage or control group. The plasma levels of danofloxacin were unmodified. The AUC (0-24 h) milk/plasma ratio decreased by over 50% in the soy-enriched diet group, compared to the control group (4.90 ± 2.65 vs. 9.58 ± 2.17). Exogenous administration of isoflavones did not modify danofloxacin secretion into milk. This study showed that milk excretion of a specific substrate of BCRP, such as danofloxacin, can be diminished by the presence of isoflavones in the diet.
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Affiliation(s)
- Miriam Perez
- Departamento de Ciencias Biomédicas-Fisiología, Facultad de Veterinaria, Campus de Vegazana s/n, Universidad de León, León, Spain
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24
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Lindner S, Halwachs S, Wassermann L, Honscha W. Expression and subcellular localization of efflux transporter ABCG2/BCRP in important tissue barriers of lactating dairy cows, sheep and goats. J Vet Pharmacol Ther 2013; 36:562-70. [PMID: 23473424 DOI: 10.1111/jvp.12045] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Accepted: 02/06/2013] [Indexed: 12/20/2022]
Abstract
Expression of efflux transporter ABCG2/BCRP in tissues barriers has shown to be associated with altered pharmaco- and toxicokinetics of xenobiotics. Until now, little is known about the functional expression of this transporter in dairy animals. We therefore systematically examined the expression and subcellular localization of ABCG2/BCRP in small intestine, colon, lung, liver, kidney and mammary gland in lactating cows, sheep and goats. Carrier expression was investigated by RT-PCR and Western blot analysis showing highest expression of ABCG2/BCRP in small intestine and mammary gland, high levels in liver and moderate amounts of protein in lung, colon and kidney. Regarding subcellular localization, BCRP was predominantly found at the apical plasma membrane of small intestine, colon, bronchial epithelium, bile ducts and overall in endothelial structures in all tested species. In the mammary gland, there was strong apical staining of the alveolar epithelial cells and most of the ducts in all dairy ruminants. We also detected significantly elevated protein expression in lactating mammary gland compared with nonlactating cows, sheep and goats. Our results contribute to the role of BCRP in cytoprotection and disposition in important tissue barriers and may have important implications for veterinary pharmacotherapy of dairy animals using drugs identified as BCRP substrates.
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Affiliation(s)
- S Lindner
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, University of Leipzig, Leipzig, Germany
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Wassermann L, Halwachs S, Lindner S, Honscha KU, Honscha W. Determination of Functional ABCG2 Activity and Assessment of Drug–ABCG2 Interactions in Dairy Animals Using a Novel MDCKII In Vitro Model. J Pharm Sci 2013. [DOI: 10.1002/jps.23399] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Otero JA, Real R, de la Fuente Á, Prieto JG, Marqués M, Álvarez AI, Merino G. The Bovine ATP-Binding Cassette Transporter ABCG2 Tyr581Ser Single-Nucleotide Polymorphism Increases Milk Secretion of the Fluoroquinolone Danofloxacin. Drug Metab Dispos 2012; 41:546-9. [DOI: 10.1124/dmd.112.049056] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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Wei J, Geale PF, Sheehy PA, Williamson P. The impact of ABCG2 on bovine mammary epithelial cell proliferation. Anim Biotechnol 2012; 23:221-4. [PMID: 22870877 DOI: 10.1080/10495398.2012.696567] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The ATP-binding cassette transporter, ABCG2, has been identified as a gene of significance in the regulation of bovine lactation by a number of gene mapping studies yet its role in lactational physiology remains unclear. We have used the potent ABCG2 specific inhibitor, Ko143, to investigate role of ABCG2 in primary bovine mammary epithelial cell (BMEC) proliferation and differentiation. After incubation with Ko143, the proliferation rate of BMECs was reduced at 48 and 72 hours by up to 80% (P < 0.001), and the effect was dose-dependent (approximately 40% with 10 nM Ko143 and 80% with 20 nM Ko143). Morphological changes in BMEC mammosphere formation were not observed when co-incubated with Ko143. Our results suggested that ABCG2 plays a role in mammary epithelial cell proliferation and that functional polymorphisms in this gene may influence the cellular compartment of the mammary gland and potentially milk production.
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Affiliation(s)
- Jerry Wei
- Veterinary Science, The University of Sydney, Sydney, Australia
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