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Adam N, Desroziers E, Hanine R, Bascarane K, Naulé L, Mhaouty-Kodja S. Developmental exposure to environmentally relevant doses of phthalates alters the neural control of male and female reproduction in mice. ENVIRONMENTAL RESEARCH 2024; 258:119476. [PMID: 38909949 DOI: 10.1016/j.envres.2024.119476] [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: 01/03/2024] [Revised: 06/14/2024] [Accepted: 06/20/2024] [Indexed: 06/25/2024]
Abstract
The present study aims to analyze the effects of developmental exposure to phthalates at environmentally relevant doses on the neural control of male and female reproduction. For this purpose, C57Bl/6J mice were exposed to di-(2-ethylexyl) phthalate (DEHP) alone (5 or 50 μg/kg/d), or DEHP (5 μg/kg/d) in a phthalate mixture. Exposure through diet started 6 weeks before the first mating and lasted until weaning of litters from the second gestation (multiparous dams). Analyses of offspring born from multiparous dams exposed to DEHP alone or in a phthalate mixture showed that females experienced a delayed pubertal onset, and as adults they had prolonged estrous cyclicity and reduced Kiss1 expression in the preoptic area and mediobasal hypothalamus. Male littermates showed a reduced anogenital distance and delayed pubertal onset compared with controls. However, in adulthood the weight of androgen-sensitive organs and hypothalamic Kiss1 expression were unaffected, suggesting normal functioning of the male gonadotropic axis. Developmental exposure to DEHP alone or in a phthalate mixture reduced the ability of intact males and ovariectomized and hormonally primed females to attract a sexual partner and to express copulatory behaviors. In addition, females were unable to discriminate between male and female stimuli in the olfactory preference test. Social interaction was also impaired in females, while locomotor activity and anxiety-like behavior in both sexes were unaffected by the treatment. The sexual deficiencies were associated with reduced expression of the androgen receptor in the preoptic area and progesterone receptor in the mediobasal hypothalamus, the key regions involved in male and female sexual behavior, respectively. Thus, the neural structures controlling reproduction are vulnerable to developmental exposure to phthalates at environmentally relevant doses in male and female mice. Adult females had an impaired gonadotropic axis and showed more affected behaviors than adult males.
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Affiliation(s)
- Nolwenn Adam
- Sorbonne Université, CNRS UMR 8246, INSERM U1130, Neuroscience Paris Seine - Institut de Biologie Paris Seine, 75005, Paris, France
| | - Elodie Desroziers
- Sorbonne Université, CNRS UMR 8246, INSERM U1130, Neuroscience Paris Seine - Institut de Biologie Paris Seine, 75005, Paris, France
| | - Rita Hanine
- Sorbonne Université, CNRS UMR 8246, INSERM U1130, Neuroscience Paris Seine - Institut de Biologie Paris Seine, 75005, Paris, France
| | - Karouna Bascarane
- Sorbonne Université, CNRS UMR 8246, INSERM U1130, Neuroscience Paris Seine - Institut de Biologie Paris Seine, 75005, Paris, France
| | - Lydie Naulé
- Sorbonne Université, CNRS UMR 8246, INSERM U1130, Neuroscience Paris Seine - Institut de Biologie Paris Seine, 75005, Paris, France
| | - Sakina Mhaouty-Kodja
- Sorbonne Université, CNRS UMR 8246, INSERM U1130, Neuroscience Paris Seine - Institut de Biologie Paris Seine, 75005, Paris, France.
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Kolena B, Hlisníková H, Nagyová M, Orendáčová K, Vondráková M, Petrovičová I, Mlynček M, Weiss P, Pfaus JG. Endocrine effect of phthalate metabolites and a butterfly effect of prenatal exposure to androgens on qualitative aspects of female sexual response- an initial survey. Int J Impot Res 2024:10.1038/s41443-024-00919-1. [PMID: 38806628 DOI: 10.1038/s41443-024-00919-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 05/10/2024] [Accepted: 05/16/2024] [Indexed: 05/30/2024]
Abstract
There is growing evidence that endocrine disruptive chemicals have deleterious effects on sexual and reproductive function. To examine subjective sexual functions in human females and their relationship to postnatal phthalate exposure and perinatal androgenization, a Sexuality Score (SS) was established from a first-stage survey questionnaire of subjective sexual function filled out by female university students (n = 68; average age 25.23 ± 5.17 years; rural 25.51 ± 6.74 vs. urban 25.85 ± 1.43 years). Seventeen phthalate metabolites in urine samples were analyzed by high-performance liquid chromatography (HPLC) and tandem mass spectrometry (MS/MS). Females were also assessed for the 2D:4D digit ratio as an index of perinatal androgenization. The mean age of menarche was 12.82 ± 1.35 years (rural 12.59 ± 1.39 vs. urban 13.18 ± 1.27; p = 0.01). The mean age at first sexual intercourse was 14.88 ± 6.89 years (rural 14.62 ± 7.20 vs. urban 15.24 ± 6.55), and as the age of first sexual intercourse increases, the SS score tends to increase as well, albeit moderately (r = 0.25, p = 0.037). Mono-iso-butyl phthalate, mono(2-ethyl-5-carboxypentyl) phthalate, mono(hydroxy-n-butyl) phthalate, mono(2-ethyl-5-oxohexyl) phthalate (p ≤ 0.05) and mono(2-carboxymethylhexyl) phthalate (p ≤ 0.01) were negatively associated with SS. A compounding butterfly effect of prenatal exposure to androgens was observed with disruptive effects of mono(2-ethyl-5-oxohexyl) phthalate and mono(2-ethyl-5-carboxypentyl) phthalate on sexual function. Exposure to phthalates in adult females may lead to disruption of subjective sexual function, especially concerning sexual desire and sexual satisfaction, and perinatal androgenization could augment these effects.
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Affiliation(s)
- Branislav Kolena
- Department of Zoology and Anthropology, Constantine the Philosopher University, Nitra, Slovakia.
| | - Henrieta Hlisníková
- Department of Zoology and Anthropology, Constantine the Philosopher University, Nitra, Slovakia
| | - Miroslava Nagyová
- Department of Zoology and Anthropology, Constantine the Philosopher University, Nitra, Slovakia
| | - Katarína Orendáčová
- Department of Zoology and Anthropology, Constantine the Philosopher University, Nitra, Slovakia
| | - Mária Vondráková
- Department of Zoology and Anthropology, Constantine the Philosopher University, Nitra, Slovakia
| | - Ida Petrovičová
- Department of Zoology and Anthropology, Constantine the Philosopher University, Nitra, Slovakia
| | - Miloš Mlynček
- Department of Nursing, Constantine the Philosopher University, Nitra, Slovakia
| | - Petr Weiss
- Department of Psychology, Charles University, Prague, Czech Republic
- Deaprtment of Psychology, Comenius University, Bratislava, Slovakia
| | - James G Pfaus
- Department of Psychology and Life Sciences, Faculty of Humanities, Charles University, Prague, Czech Republic
- Center for Sexual Health and Intervention, Czech National Institute of Mental Health, Klecany, Czech Republic
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Behavioral Effects of Exposure to Phthalates in Female Rodents: Evidence for Endocrine Disruption? Int J Mol Sci 2022; 23:ijms23052559. [PMID: 35269705 PMCID: PMC8910129 DOI: 10.3390/ijms23052559] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 12/18/2022] Open
Abstract
Phthalates have been widely studied for their reprotoxic effects in male rodents and in particular on testosterone production, for which reference doses were established. The female rodent brain can also represent a target for exposure to these environmental endocrine disruptors. Indeed, a large range of behaviors including reproductive behaviors, mood-related behaviors, and learning and memory are regulated by sex steroid hormones. Here we review the experimental studies addressing the effects and mechanisms of phthalate exposure on these behaviors in female rodents, paying particular attention to the experimental conditions (period of exposure, doses, estrous stage of analyses etc.). The objective of this review is to provide a clear picture of the consistent effects that can occur in female rodents and the gaps that still need to be filled in terms of effects and mode(s) of action for a better risk assessment for human health.
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Adam N, Mhaouty-Kodja S. [Disruption of sexual behavior by phthalates in mice: Females are more vulnerable than males]. Med Sci (Paris) 2021; 37:973-976. [PMID: 34851270 DOI: 10.1051/medsci/2021135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Nolwenn Adam
- Sorbonne Université, CNRS UMR 8246, Inserm U1130, Neuroscience Paris Seine - Institut de biologie Paris Seine, 7 quai Saint-Bernard, 75005 Paris, France
| | - Sakina Mhaouty-Kodja
- Sorbonne Université, CNRS UMR 8246, Inserm U1130, Neuroscience Paris Seine - Institut de biologie Paris Seine, 7 quai Saint-Bernard, 75005 Paris, France
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Adam N, Brusamonti L, Mhaouty-Kodja S. Exposure of Adult Female Mice to Low Doses of di(2-ethylhexyl) Phthalate Alone or in an Environmental Phthalate Mixture: Evaluation of Reproductive Behavior and Underlying Neural Mechanisms. ENVIRONMENTAL HEALTH PERSPECTIVES 2021; 129:17008. [PMID: 33502250 PMCID: PMC7839353 DOI: 10.1289/ehp7662] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
BACKGROUND We have previously shown that adult male mice exposure to low doses of an ubiquitous endocrine disruptor, di(2-ethylhexyl) phthalate (DEHP), alters courtship behavior. OBJECTIVE The effects of adult exposure to low doses of DEHP alone or in an environmental phthalate mixture on estrous cyclicity, reproductive behavior, and underlying neural structures were analyzed in female mice. METHODS Two-month-old C57BL/6J females were exposed orally for 6 wk to DEHP alone (0, 5 or 50μg/kg/d) or to DEHP (5μg/kg/d) in a phthalate mixture. Estrous cyclicity was analyzed in intact mice, and behavior [lordosis, olfactory preference, partner preference, ability to stimulate male ultrasonic vocalizations (USVs)] was measured in ovariectomized mice primed with estradiol and progesterone. Immunohistochemical studies were conducted in the neural structures involved in behavior for estrogen receptor (ER) α and progesterone receptor (PR). RESULTS Exposure to DEHP alone or in mixture lengthened the estrous cycle duration, with a shorter proestrus and longer estrus and metestrus stages. Under normalized hormonal levels, females exposed to DEHP alone or in mixture exhibited altered olfactory preference. A lower lordosis behavior and ability to attract and stimulate male emission of courtship USVs was observed, probably due to modifications of pheromonal emission in exposed females. The behavioral alterations were associated with a lower number of PR-expressing neurons, without changes in ERα, in the neural circuitry underlying sexual behavior. The majority of effects observed was comparable between the two DEHP doses and were driven by DEHP in the mixture. CONCLUSIONS Exposure to environmental doses of DEHP alone or in mixture altered several components of female sexual behavior in mice, probably through selective disruption of neural PR signaling. Together with the previously reported vulnerability of male mice, this finding suggests a major impact of exposure to phthalates on sexual reproduction, including in other species with similar neural regulatory processes. https://doi.org/10.1289/EHP7662.
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Affiliation(s)
- Nolwenn Adam
- Sorbonne Université, CNRS, Institut national de la santé et de la recherche médicale (Inserm); Neuroscience Paris Seine — Institut de Biologie Paris Seine, Paris, France
| | - Linda Brusamonti
- Sorbonne Université, CNRS, Institut national de la santé et de la recherche médicale (Inserm); Neuroscience Paris Seine — Institut de Biologie Paris Seine, Paris, France
| | - Sakina Mhaouty-Kodja
- Sorbonne Université, CNRS, Institut national de la santé et de la recherche médicale (Inserm); Neuroscience Paris Seine — Institut de Biologie Paris Seine, Paris, France
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Baken KA, Lambrechts N, Remy S, Mustieles V, Rodríguez-Carrillo A, Neophytou CM, Olea N, Schoeters G. A strategy to validate a selection of human effect biomarkers using adverse outcome pathways: Proof of concept for phthalates and reproductive effects. ENVIRONMENTAL RESEARCH 2019; 175:235-256. [PMID: 31146096 DOI: 10.1016/j.envres.2019.05.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/09/2019] [Accepted: 05/10/2019] [Indexed: 05/21/2023]
Abstract
Human biomonitoring measures the concentrations of environmental chemicals or their metabolites in body fluids or tissues. Complementing exposure biomarkers with mechanistically based effect biomarkers may further elucidate causal pathways between chemical exposure and adverse health outcomes. We combined information on effect biomarkers previously implemented in human observational studies with mechanisms of action reported in experimental studies and with information from published Adverse Outcome Pathways (AOPs), focusing on adverse reproductive effects of phthalate exposure. Phthalates constitute a group of chemicals that are ubiquitous in consumer products and have been related to a wide range of adverse health effects. As a result of a comprehensive literature search, we present an overview of effect biomarkers for reproductive toxicity that are substantiated by mechanistic information. The activation of several receptors, such as PPARα, PPARγ, and GR, may initiate events leading to impaired male and female fertility as well as other adverse effects of phthalate exposure. Therefore, these receptors appear as promising targets for the development of novel effect biomarkers. The proposed strategy connects the fields of epidemiology and toxicology and may strengthen the weight of evidence in observational studies that link chemical exposures to health outcomes.
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Affiliation(s)
- Kirsten A Baken
- Unit Health, Flemish Institute for Technological Research (VITO NV), Mol, Belgium.
| | - Nathalie Lambrechts
- Unit Health, Flemish Institute for Technological Research (VITO NV), Mol, Belgium
| | - Sylvie Remy
- Unit Health, Flemish Institute for Technological Research (VITO NV), Mol, Belgium; Department of Epidemiology and Social Medicine, University of Antwerp, Antwerp, Belgium
| | - Vicente Mustieles
- Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada, Granada, Spain; Center for Biomedical Research (CIBM), University of Granada, Granada, Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Spain
| | | | - Christiana M Neophytou
- Department of Biological Sciences, School of Pure and Applied Sciences, University of Cyprus, Nicosia, Cyprus
| | - Nicolas Olea
- Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada, Granada, Spain; Center for Biomedical Research (CIBM), University of Granada, Granada, Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Spain
| | - Greet Schoeters
- Unit Health, Flemish Institute for Technological Research (VITO NV), Mol, Belgium; Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium; Department of Environmental Medicine, Institute of Public Health, University of Southern Denmark, Odense, Denmark
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7
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Capela D, Mhaouty-Kodja S. [When exposure to an environmental endocrine disrupter reduces male courtship behavior]. Med Sci (Paris) 2018; 34:211-214. [PMID: 29547105 DOI: 10.1051/medsci/20183403007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Daphné Capela
- Sorbonne universités, Université Pierre et Marie Curie, Paris 06, Inserm, CNRS, neuroscience Paris Seine - Institut de biologie Paris Seine, 7, quai St-Bernard, Bâtiment A, 75005 Paris, France
| | - Sakina Mhaouty-Kodja
- Sorbonne universités, Université Pierre et Marie Curie, Paris 06, Inserm, CNRS, neuroscience Paris Seine - Institut de biologie Paris Seine, 7, quai St-Bernard, Bâtiment A, 75005 Paris, France
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8
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Seltenrich N. Love Song Blues: DEHP Alters Courtship Vocalizations in Mice. ENVIRONMENTAL HEALTH PERSPECTIVES 2018; 126:014001. [PMID: 29351545 PMCID: PMC6014691 DOI: 10.1289/ehp2923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 10/11/2017] [Indexed: 06/07/2023]
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9
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Mhaouty-Kodja S, Naulé L, Capela D. Sexual Behavior: From Hormonal Regulation to Endocrine Disruption. Neuroendocrinology 2018; 107:400-416. [PMID: 30326485 DOI: 10.1159/000494558] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 10/16/2018] [Indexed: 11/19/2022]
Abstract
Sexual behavior constitutes a chain of behavioral responses beginning with courtship and leading to copulation. These responses, which are exhibited in a sexually dimorphic manner by the two partners, are tightly regulated by sex steroid hormones as early as the perinatal period. Hormonal changes or exposure to exogenous factors exhibiting hormone-mimetic activities, such as endocrine disrupting compounds (EDC), can therefore interfere with their expression. Here we review the experimental studies in rodents performed to address the potential effects of exposure to EDC on sexual behavior and underlying mechanisms, with particular attention to molecules with estrogenic and/or anti-androgenic activities.
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10
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Barrett ES, Patisaul HB. Endocrine disrupting chemicals and behavior: Re-evaluating the science at a critical turning point. Horm Behav 2017; 96:A1-A6. [PMID: 28947077 DOI: 10.1016/j.yhbeh.2017.09.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 09/16/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Emily S Barrett
- Department of Epidemiology, Rutgers School of Public Health, Piscataway, NJ 08854, United States; Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ 08854, United States.
| | - Heather B Patisaul
- Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695, United States; Center for Human Health and the Environment, North Carolina State University, Raleigh, NC 27695, United States
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11
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Dombret C, Capela D, Poissenot K, Parmentier C, Bergsten E, Pionneau C, Chardonnet S, Hardin-Pouzet H, Grange-Messent V, Keller M, Franceschini I, Mhaouty-Kodja S. Neural Mechanisms Underlying the Disruption of Male Courtship Behavior by Adult Exposure to Di(2-ethylhexyl) Phthalate in Mice. ENVIRONMENTAL HEALTH PERSPECTIVES 2017; 125:097001. [PMID: 28934723 PMCID: PMC5915199 DOI: 10.1289/ehp1443] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 06/08/2017] [Accepted: 06/09/2017] [Indexed: 05/05/2023]
Abstract
BACKGROUND Courtship behavior plays a critical role in attracting females and reproduction success. However, the effects of exposure to a ubiquitous contaminant di(2-ethylhexyl) phthalate (DEHP) on these behaviors and, in particular, on courtship vocalizations have not been examined. OBJECTIVE The effects of adult exposure to DEHP on courtship and mating behaviors and gonadotropic axis and neural mechanisms involved in DEHP-induced effects were analyzed in male mice. METHODS Adult C57BL/6J males were orally exposed to DEHP (0, 0.5, 5, and 50μg/kg/d) for 4 wk. Olfactory preference, ultrasonic vocalizations (USVs), partner preference and mating, as well as locomotor activity and motor coordination, were measured. The kisspeptin system and testosterone levels were analyzed. Proteomic and molecular studies were conducted on the hypothalamic preoptic nucleus, the key region involved in sexual motivation to vocalize and mate. RESULTS DEHP at 50μg/kg/d reduced the emission of USVs, whereas lower doses changed the ratio of syllable categories. This was associated with diminished sexual interest of female partners toward males exposed to 5 or 50μg/kg/d and increased latency to mate, despite normal olfactory preference. The kisspeptin system and circulating testosterone levels were unaffected. In DEHP-exposed males, proteomic analysis of the preoptic nucleus identified differentially expressed proteins connected to the androgen receptor (AR). Indeed, exposure to 5 or 50μg/kg/d of DEHP induced selective AR downregulation in this nucleus and upstream chemosensory regions. The involvement of AR changes in the observed alterations was further supported by the reduced emission of courtship vocalizations in males with disrupted neural AR expression. CONCLUSIONS These data demonstrate the critical role of neural AR in courtship vocalizations and raises the possibility that the vulnerability of this signaling pathway to exposure to endocrine disrupters may be detrimental for courtship communication and mating in several species. https://doi.org/10.1289/EHP1443.
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Affiliation(s)
- Carlos Dombret
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS , Neuroscience Paris Seine - Institut de Biologie Paris Seine, Paris, France
| | - Daphné Capela
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS , Neuroscience Paris Seine - Institut de Biologie Paris Seine, Paris, France
| | - Kevin Poissenot
- Institut National de la Recherche Agronomique, Unité Mixte de Recherche 85 , Nouzilly, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7247 , Nouzilly, France
- Université François Rabelais , Tours, France
- Institut Français du Cheval et de l'Equitation , Nouzilly, France
| | - Caroline Parmentier
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS , Neuroscience Paris Seine - Institut de Biologie Paris Seine, Paris, France
| | - Emma Bergsten
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS , Neuroscience Paris Seine - Institut de Biologie Paris Seine, Paris, France
| | | | | | - Hélène Hardin-Pouzet
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS , Neuroscience Paris Seine - Institut de Biologie Paris Seine, Paris, France
| | - Valérie Grange-Messent
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS , Neuroscience Paris Seine - Institut de Biologie Paris Seine, Paris, France
| | - Matthieu Keller
- Institut National de la Recherche Agronomique, Unité Mixte de Recherche 85 , Nouzilly, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7247 , Nouzilly, France
- Université François Rabelais , Tours, France
- Institut Français du Cheval et de l'Equitation , Nouzilly, France
| | - Isabelle Franceschini
- Institut National de la Recherche Agronomique, Unité Mixte de Recherche 85 , Nouzilly, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7247 , Nouzilly, France
- Université François Rabelais , Tours, France
- Institut Français du Cheval et de l'Equitation , Nouzilly, France
| | - Sakina Mhaouty-Kodja
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS , Neuroscience Paris Seine - Institut de Biologie Paris Seine, Paris, France
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12
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Lopez DS, Advani S, Tsilidis KK, Wang R, Baillargeon J, Dobs A, Symanski E, Canfield S. Association of Urinary Phthalate Metabolites With Erectile Dysfunction in Racial and Ethnic Groups in the National Health and Nutrition Examination Survey 2001-2004. Am J Mens Health 2016; 11:576-584. [PMID: 27036411 DOI: 10.1177/1557988316641370] [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] [Indexed: 11/17/2022] Open
Abstract
Phthalates are endocrine-disrupting compounds detectable in more than 75% of the U.S. population with differential distributions across racial and ethnic groups, and they have been linked with reduced levels of serum testosterone. This study aims to investigate the associations of phthalate metabolites with erectile dysfunction (ED) and to determine whether these associations vary by race/ethnicity among men in the United States. Analyzed data for 12 phthalate metabolites from 3,746 men (≥20 years old), who participated in the National Health and Nutrition Examination Survey 2001-2004 cross-sectional study, were included. Metabolites included MBP, MCHP, MEP, MEHP, MiNP, MBzP, MMP, MCPP, MEHHP, MEOHP, MiBP, and MECPP. Racial/ethnic groups included non-Hispanic Blacks ( n = 770), non-Hispanic Whites ( n = 2,147), and Mexican Americans ( n = 829). ED was assessed by a single question during a self-paced, computer-assisted self-interview. In racial/ethnic stratified analyses, there were higher MBP and MBzP concentrations that had a strong-dose response association with lower prevalence odds of ED among Mexican Americans, ptrend < .01, and ptrend = .03, respectively. Similarly, a significant inverse association between MEHHP and likelihood of ED among non-Hispanic Black men ( ptrend < .04) was observed. Furthermore, significant inverse associations between higher concentrations of phthalates and ED were identified only in minority populations. Further investigations, particularly prospective studies, are warranted to determine the role of phthalates on the biological mechanism(s) associated with ED. A focus may be placed on testosterone levels which are suggested to be affected by phthalates, and also low levels of testosterone are suggested to increase the risk of ED.
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Affiliation(s)
- David S Lopez
- 1 The University of Texas School of Public Health, Houston, TX, USA.,2 The University of Texas Medical School, Houston, TX, USA
| | - Shailesh Advani
- 1 The University of Texas School of Public Health, Houston, TX, USA
| | - Konstantinos K Tsilidis
- 3 University of Ioannina School of Medicine, Ioannina, Greece.,4 Imperial College London, London, UK
| | - Run Wang
- 2 The University of Texas Medical School, Houston, TX, USA
| | | | - Adrian Dobs
- 6 Johns Hopkins University, Baltimore, MD, USA
| | - Elaine Symanski
- 1 The University of Texas School of Public Health, Houston, TX, USA
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The Inflammation Response to DEHP through PPARγ in Endometrial Cells. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:ijerph13030318. [PMID: 26985901 PMCID: PMC4808981 DOI: 10.3390/ijerph13030318] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 02/28/2016] [Accepted: 03/09/2016] [Indexed: 12/16/2022]
Abstract
Epidemiological studies have shown the possible link between phthalates and endometrium-related gynecological diseases, however the molecular mechanism(s) behind this is/are still unclear. In the study, both primary cultured endometrial cells and an endometrial adenocarcinoma cell line (Ishikawa) were recruited to investigate the effects of di-(2-ethylhexyl) phthalate (DEHP) at human-relevant concentrations. The results showed that DEHP did not affect the viability of either type of cell, which showed different responses to inflammation. Primary cultured cells showed stronger inflammatory reactions than the Ishikawa cell line. The expression of inflammatory factors was induced both at the mRNA and protein levels, however the inflammation did not induce the progress of epithelial-mesenchymal transition (EMT) as the protein levels of EMT markers were not affected after exposure to either cell type. Further study showed that the mRNA levels of peroxisome proliferator-activated receptor gamma (PPARγ) wereup-regulated after exposure. In all, our study showed that human-relevant concentrations of DEHP could elicit the inflammatory response in primary cultured endometrial cells rather than in Ishikawa cell line. PPARγ may act as the mediating receptor in the inflammation reaction.
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Beronius A, Vandenberg LN. Using systematic reviews for hazard and risk assessment of endocrine disrupting chemicals. Rev Endocr Metab Disord 2015; 16:273-87. [PMID: 26847432 PMCID: PMC4803521 DOI: 10.1007/s11154-016-9334-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The possibility that endocrine disrupting chemicals (EDCs) in our environment contribute to hormonally related effects and diseases observed in human and wildlife populations has caused concern among decision makers and researchers alike. EDCs challenge principles traditionally applied in chemical risk assessment and the identification and assessment of these compounds has been a much debated topic during the last decade. State of the science reports and risk assessments of potential EDCs have been criticized for not using systematic and transparent approaches in the evaluation of evidence. In the fields of medicine and health care, systematic review methodologies have been developed and used to enable objectivity and transparency in the evaluation of scientific evidence for decision making. Lately, such approaches have also been promoted for use in the environmental health sciences and risk assessment of chemicals. Systematic review approaches could provide a tool for improving the evaluation of evidence for decision making regarding EDCs, e.g. by enabling systematic and transparent use of academic research data in this process. In this review we discuss the advantages and challenges of applying systematic review methodology in the identification and assessment of EDCs.
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Affiliation(s)
- Anna Beronius
- Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm, Sweden
| | - Laura N. Vandenberg
- Department of Environmental Health Sciences, University of Massachusetts Amherst School of Public Health & Health Sciences, Amherst, MA, USA
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Kim S, Hong SH, Bong CK, Cho MH. Characterization of air freshener emission: the potential health effects. J Toxicol Sci 2015; 40:535-50. [DOI: 10.2131/jts.40.535] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Sanghwa Kim
- Laboratory of Toxicology, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, Korea
- Graduate Group of Tumor Biology, Seoul National University, Korea
| | - Seong-Ho Hong
- Laboratory of Toxicology, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, Korea
| | | | - Myung-Haing Cho
- Laboratory of Toxicology, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, Korea
- Graduate Group of Tumor Biology, Seoul National University, Korea
- Graduate School of Convergence Science and Technology, Seoul National University, Korea
- Advanced Institute of Convergence Technology, Seoul National University, Korea
- Institute of GreenBio Science Technology, Seoul National University, Korea
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