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Bozec J, Rousseau-Ralliard D, Jouneau L, Prézelin A, Dahirel M, Richard C, Gelin V, Fournier N, Helies V, Joly T, El Fouikar S, Léandri R, Chavatte-Palmer P, Couturier-Tarrade A. Preconception and/or preimplantation exposure to a mixture of environmental contaminants altered fetoplacental development and placental function in a rabbit model. ENVIRONMENTAL RESEARCH 2024:119829. [PMID: 39179140 DOI: 10.1016/j.envres.2024.119829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 08/19/2024] [Accepted: 08/20/2024] [Indexed: 08/26/2024]
Abstract
Pregnant women are daily exposed to environmental contaminants, including endocrine disruptors that can impact the offspring's health. This study aimed to evaluate the effects of maternal oral exposure to a mixture of contaminants at a dose mimicking women's exposure, during folliculogenesis and/or preimplantation period (FED and ED groups, respectively) on the fetoplacental phenotype in a rabbit model. The mixture (DEHP, pp'DDE, β-HCH, HCB, BDE-47, BPS, PFOS, PFOA) was defined based on data from HELIX and INMA cohorts. FED and ED females or unexposed females (control) were inseminated, their embryos were collected and transferred to unexposed control recipient rabbits at 80 hours post-insemination. The effects of maternal FED and ED exposure were evaluated on fetoplacental growth and development by ultrasound, fetoplacental biometry, fetal metabolism, placental structure and function. The results demonstrated that the mixture weakly affected ultrasound measurements, as only placental volume increased significantly in FED vs ED. Analysis of placental structure demonstrated that the volume fraction of the maternal blood space was increased in FED vs control. Pre- and/or periconception exposure did not affect biometric at the end of gestation, but affected FED fetal biochemistry. Plasma triglyceride concentration was reduced compared to control. However, total cholesterol, urea, ASAT and ALAT in fetal blood were affected in both exposed groups. Multiple factor analysis, including biometric, biochemical, and stereological datasets, indicated that the three groups were significantly different. Additionally, several placental genes were differentially expressed between groups, compared two by two, in a sex-specific manner, with more difference in females than in males. The differentially expressed genes were involved in lipid, cholesterol, and drug/xenobiotic metabolism in both sexes. These results indicate that maternal exposure to environmental contaminants during crucial developmental windows only mildly impaired fetoplacental development but disturbed fetal blood biochemistry and placental gene expression with potential long-term effects on offspring phenotype.
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Affiliation(s)
- Jeanne Bozec
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France; Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - Delphine Rousseau-Ralliard
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France; Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - Luc Jouneau
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France; Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - Audrey Prézelin
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France; Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - Michèle Dahirel
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France; Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - Christophe Richard
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France; Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - Valérie Gelin
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France; Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - Natalie Fournier
- Lip(Sys)2 - EA 7357, Athérosclérose et macrophages: impact des phospholipides et des fonctions mitochondriales sur l'efflux du cholestérol, Université Paris Saclay, UFR de Pharmacie, 91400, Orsay, France, Laboratoire de Biochimie, AP-HP (Assistance Publique-Hôpitaux de Paris), Hôpital Européen Georges Pompidou, 75015, Paris, France
| | - Virginie Helies
- GenPhySE, INRAE, Université de Toulouse, INPT, ENVT, Castanet Tolosan, France
| | - Thierry Joly
- Université de Lyon, VetAgro Sup, UPSP Interaction cellule environnement, 69280 Marcy l'Etoile, France; Université de Lyon, ISARA-Lyon, 69007 Lyon, France
| | - Sara El Fouikar
- ToxAlim (Research Center in Food Toxicology), Université de Toulouse, INRAE, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Roger Léandri
- ToxAlim (Research Center in Food Toxicology), Université de Toulouse, INRAE, ENVT, INP-Purpan, UPS, Toulouse, France; Médecine de la Reproduction, Hôpital Paule de Viguier, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Pascale Chavatte-Palmer
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France; Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - Anne Couturier-Tarrade
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France; Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France.
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Gong C, Bertagnolli LN, Boulton DW, Coppola P. A Literature Review of Changes in Phase II Drug-Metabolizing Enzyme and Drug Transporter Expression during Pregnancy. Pharmaceutics 2023; 15:2624. [PMID: 38004602 PMCID: PMC10674389 DOI: 10.3390/pharmaceutics15112624] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 11/02/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
The purpose of this literature review is to comprehensively summarize changes in the expression of phase II drug-metabolizing enzymes and drug transporters in both the pregnant woman and the placenta. Using PubMed®, a systematic search was conducted to identify literature relevant to drug metabolism and transport in pregnancy. PubMed was searched with pre-specified terms during the period of 26 May 2023 to 10 July 2023. The final dataset of 142 manuscripts was evaluated for evidence regarding the effect of gestational age and hormonal regulation on the expression of phase II enzymes (n = 16) and drug transporters (n = 38) in the pregnant woman and in the placenta. This comprehensive review exposes gaps in current knowledge of phase II enzyme and drug transporter localization, expression, and regulation during pregnancy, which emphasizes the need for further research. Moreover, the information collected in this review regarding phase II drug-metabolizing enzyme and drug transporter changes will aid in optimizing pregnancy physiologically based pharmacokinetic (PBPK) models to inform dose selection in the pregnant population.
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Affiliation(s)
- Christine Gong
- School of Pharmacy, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Lynn N. Bertagnolli
- AstraZeneca LP, Biopharmaceuticals R&D, Clinical Pharmacology & Safety Sciences, Clinical Pharmacology & Quantitative Pharmacology, Gaithersburg, MD 20878, USA
| | - David W. Boulton
- AstraZeneca LP, Biopharmaceuticals R&D, Clinical Pharmacology & Safety Sciences, Clinical Pharmacology & Quantitative Pharmacology, Gaithersburg, MD 20878, USA
| | - Paola Coppola
- AstraZeneca LP, Biopharmaceuticals R&D, Clinical Pharmacology & Safety Sciences, Clinical Pharmacology & Quantitative Pharmacology, Cambridge CB2 0AA, UK
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Activities of xenobiotic metabolizing enzymes in rat placenta and liver in vitro. Toxicol In Vitro 2016; 33:174-9. [PMID: 26944803 DOI: 10.1016/j.tiv.2016.02.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 02/02/2016] [Accepted: 02/29/2016] [Indexed: 01/09/2023]
Abstract
In order to assess whether the placental metabolism of xenobiotic compounds should be taken into consideration for physiologically-based toxicokinetic (PBTK) modelling, the activities of seven phase I and phase II enzymes have been quantified in the 18-day placenta of untreated Wistar rats. To determine their relative contribution, these activities were compared to those of untreated adult male rat liver, using commonly accepted assays. The enzymes comprised cytochrome P450 (CYP), flavin-containing monooxygenase (FMO), alcohol dehydrogenase (ADH), aldehyde dehydrogenase (ALDH), esterase, UDP-glucuronosyltransferase (UGT), and glutathione S-transferase (GST). In contrast to liver, no activities were measurable for 7-ethylresorufin-O-dealkylase (CYP1A), 7-pentylresorufin-O-dealkylase (CYP2B), 7-benzylresorufin-O-dealkylase (CYP2B, 2C and 3 A), UGT1, UGT2 and GST in placenta, indicating that the placental activity of these enzymes was well below their hepatic activity. Low activities in placenta were determined for FMO (4%), and esterase (8%), whereas the activity of placental ADH and ALDH accounted for 35% and 40% of the hepatic activities, respectively. In support of the negligible placental CYP activity, testosterone and six model azole fungicides, which were readily metabolized by rat hepatic microsomes, failed to exhibit any metabolic turnover with rat placental microsomes. Hence, with the possible exception of ADH and ALDH, the activities of xenobiotic-metabolizing enzymes in rat placenta are too low to warrant consideration in PBTK modelling.
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Fouladi-Nashta AA, Jones CJP, Nijjar N, Mohamet L, Smith A, Chambers I, Kimber SJ. Characterization of the uterine phenotype during the peri-implantation period for LIF-null, MF1 strain mice. Dev Biol 2005; 281:1-21. [PMID: 15848385 DOI: 10.1016/j.ydbio.2005.01.033] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2004] [Revised: 01/20/2005] [Accepted: 01/21/2005] [Indexed: 11/18/2022]
Abstract
Leukemia inhibitory factor plays a major role in the uterus and in its absence embryos fail to implant. Our knowledge of the targets for LIF and the consequences of its absence is still very incomplete. In this study, we have examined the ultrastructure of the potential implantation site in LIF-null MF1 female mice compared to that of wild type animals. We also compared expression of proteins associated with implantation in luminal epithelium and stroma. Luminal epithelial cells (LE) of null animals failed to develop apical pinopods, had increased glycocalyx, and retained a columnar shape during the peri-implantation period. Stromal cells of LIF-null animals showed no evidence of decidual giant cell formation even by day 6 of pregnancy. A number of proteins normally expressed in decidualizing stroma did not increase in abundance in the LIF-null animals including desmin, tenascin, Cox-2, bone morphogenetic protein (BMP)-2 and -7, and Hoxa-10. In wild type animals, the IL-6 family member Oncostatin M (OSM) was found to be transiently expressed in the luminal epithelium on late day 4 and then in the stroma at the attachment site on days 5-6 of pregnancy, with a similar but not identical pattern to that of Cox-2. In the LIF-null animals, no OSM protein was detected in either LE or stroma adjacent to the embryo, indicating that expression requires uterine LIF in addition to a blastocyst signal. Fucosylated epitopes: the H-type-1 antigen and those recognized by lectins from Ulex europaeus-1 and Tetragonolobus purpureus were enhanced on apical LE on day 4 of pregnancy. H-type-1 antigen remained higher on day 5, and was not reduced even by day 6 in contrast to wild type uterus. These data point to a profound disturbance of normal luminal epithelial and stromal differentiation during early pregnancy in LIF-nulls. On this background, we also obtained less than a Mendelian ratio of null offspring suggesting developmental failure.
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Affiliation(s)
- A A Fouladi-Nashta
- Faculty of Life Sciences, University of Manchester, 3.239 Stopford Building, Oxford Road, Manchester M13 9PT, UK
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Datta K, Kulkarni AP. Oxidative metabolism of aflatoxin B1 by lipoxygenase purified from human term placenta and intrauterine conceptal tissues. TERATOLOGY 1994; 50:311-7. [PMID: 7716738 DOI: 10.1002/tera.1420500406] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Aflatoxin B1 (AFB1) is a teratogen in rodents and may be a human transplacental carcinogen. Although the presence of DNA adducts of AFB1 in the human placentas has been noted, the enzyme(s) responsible for the bioactivation was not identified. In this investigation, the linoleic acid (LA)-dependent cooxidation of AFB1 catalyzed by lipoxygenase (LO) purified by Con A affinity chromatography from the term placentas of nonsmokers was studied. HPLC chromatograms detected the presence of 5- and 15-HETE as the major metabolites and 12-HETE as a minor metabolite upon incubation of arachidonic acid (AA) with affinity purified human term placental LO. These results suggest that a mixture of LO isozymes is present in the affinity-purified enzyme preparations of term placentas. The optimal assay conditions to observe maximum rate of epoxidation included incubation of 250 microM AFB1 with 80 micrograms LO and 3.5 mM LA at pH 7.2. AFB1-8,9-tris-diol produced in the reaction was estimated spectrofluorimetrically. A Vmax of 432 +/- 26 pmol of AFB1-8,9-tris diol produced/min/mg protein and a Km of 77 microM for AFB1 were observed. The AFB1-8,9-tris-diol formation was dependent on the incubation time, concentration of enzyme protein, AFB1, and LA. LO catalyzed epoxidation of AFB1 was inhibited by NDGA, BHT, BHA, ETI, and gossypol. The evidence presented here clearly demonstrates that placental LO is capable of epoxidation of AFB1. Similar results were observed with LO preparations of human intrauterine conceptal tissues at 8-10 weeks of gestation.
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Affiliation(s)
- K Datta
- Florida Toxicology Research Center, Department of Environmental and Occupational Health, College of Public Health, University of South Florida, Tampa 33612
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