1
|
Moreno-Ortiz G, Aguilar L, Caamal-Monsreal C, Noreña-Barroso E, Rosas C, Rodríguez-Fuentes G. Benzophenone-3 does not Cause Oxidative Stress or B-esterase Inhibition During Embryo Development of Octopus maya (Voss and Solís Ramírez, 1966). BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2023; 111:60. [PMID: 37903889 PMCID: PMC10615918 DOI: 10.1007/s00128-023-03788-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 08/12/2023] [Indexed: 11/01/2023]
Abstract
Benzophenone-3 (BP-3) is an active ingredient in sunscreen lotions and personal-care products that protects against the damaging effects of ultraviolet rays. Given its worldwide dissemination, it has been linked with harmful effects on aquatic biota; however, its impact is not fully understood calling for further studies. To understand the impacts on an important economically and ecologically species, we evaluated the toxicity of BP-3 during the embryonic development of Octopus maya. Embryos were exposed to increasing concentrations of up to 500 µg BP-3/L until hatching. Antioxidant enzyme activities, oxidative-stress indicators, and B-esterases activities were measured at different developmental phases (organogenesis, activation, and growth). There were no significant differences between treatments, suggesting the lack of production of toxic metabolites that may be related to a protective chorion, an underdeveloped detoxification system, and the experimental conditions that limited phototoxicity.
Collapse
Affiliation(s)
- Gissela Moreno-Ortiz
- Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Av. Universidad 3000, Ciudad Universitaria, Coyoacán, Ciudad de México, C.P. 04510, México
| | - Letícia Aguilar
- Unidad de Química en Sisal, Facultad de Química, Universidad Nacional Autónoma de México, Puerto de Abrigo s/n, Sisal, Yucatán, México
| | - Claudia Caamal-Monsreal
- Unidad Disciplinaria de Docencia e investigación, Facultad de Ciencias, Universidad Nacional Autónoma de México, Puerto de Abrigo s/n, Sisal, Yucatán, México
| | - Elsa Noreña-Barroso
- Unidad de Química en Sisal, Facultad de Química, Universidad Nacional Autónoma de México, Puerto de Abrigo s/n, Sisal, Yucatán, México
| | - Carlos Rosas
- Unidad Disciplinaria de Docencia e investigación, Facultad de Ciencias, Universidad Nacional Autónoma de México, Puerto de Abrigo s/n, Sisal, Yucatán, México
| | - Gabriela Rodríguez-Fuentes
- Unidad de Química en Sisal, Facultad de Química, Universidad Nacional Autónoma de México, Puerto de Abrigo s/n, Sisal, Yucatán, México.
| |
Collapse
|
2
|
Santovito A, Pappalardo A, Nota A, Prearo M, Schleicherová D. Lymnaea stagnalis and Ophryotrocha diadema as Model Organisms for Studying Genotoxicological and Physiological Effects of Benzophenone-3. TOXICS 2023; 11:827. [PMID: 37888678 PMCID: PMC10610920 DOI: 10.3390/toxics11100827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/22/2023] [Accepted: 09/28/2023] [Indexed: 10/28/2023]
Abstract
Benzophenone-3 (BP-3) is a lipophilic organic compound that occurs naturally in flower pigments. Since it adsorbs ultraviolet (UV) radiation in the UVA and UVB regions, it is one of the most common UV filters found in sunscreen and cosmetic products. We explored by in vivo micronuclei (MNi) assay the genotoxic effects of BP-3 on hemocytes from the freshwater gastropod Lymnaea stagnalis. We also studied its possible toxic effects on life-history traits: body growth in L. stagnalis and egg production of both L. stagnalis and the marine polychaete worm Ophryotrocha diadema. Adult individuals were exposed to increasing concentrations of BP-3 (0.025, 0.050, 0.100, and 0.200 mg/L) once a week for 4 weeks. In L. stagnalis, exposure to BP-3 at concentrations of both 0.2 and 0.1 mg/L produced genotoxic effects on the micronuclei frequencies, but only concentrations of 0.2 mg/L affected the NBUDs frequencies. Similarly, negative effects on body growth were observed at the concentrations of 0.2 and 0.1 mg/L and a significant reduction of egg production at 0.2 mg/L. In O. diadema, a negative correlation between egg production and increasing BP-3 concentrations was observed. Our findings suggest the need for more stringent measures to reduce the presence of BP-3 in the environment.
Collapse
Affiliation(s)
- Alfredo Santovito
- Department of Life Sciences and Systems Biology, Via Accademia Albertina 13, 10123 Turin, Italy; (A.P.); (A.N.); (D.S.)
| | - Alessia Pappalardo
- Department of Life Sciences and Systems Biology, Via Accademia Albertina 13, 10123 Turin, Italy; (A.P.); (A.N.); (D.S.)
| | - Alessandro Nota
- Department of Life Sciences and Systems Biology, Via Accademia Albertina 13, 10123 Turin, Italy; (A.P.); (A.N.); (D.S.)
| | - Marino Prearo
- IZS PLV (Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta), Via Bologna 148, 10154 Torino, Italy;
| | - Dáša Schleicherová
- Department of Life Sciences and Systems Biology, Via Accademia Albertina 13, 10123 Turin, Italy; (A.P.); (A.N.); (D.S.)
- IZS PLV (Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta), Via Bologna 148, 10154 Torino, Italy;
| |
Collapse
|
3
|
Broniowska Ż, Tomczyk I, Grzmil P, Bystrowska B, Skórkowska A, Maciejska A, Kazek G, Budziszewska B. Benzophenone-2 exerts reproductive toxicity in male rats. Reprod Toxicol 2023; 120:108450. [PMID: 37543253 DOI: 10.1016/j.reprotox.2023.108450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 07/25/2023] [Accepted: 07/29/2023] [Indexed: 08/07/2023]
Abstract
Benzophenone derivatives such as benzophenone-2 (BP-2) belong to the group of endocrine disrupting compounds (EDCs). Increased exposure to EDCs is considered to be an important factor behind the decline of human fertility. The main aim of the present study was to determine the effect of BP-2 on testicular function specified by sperm analysis, the level of sex hormones and their receptors. Since BP-2 has been shown to activate the immune system, another aim of the research was to verify the hypothesis that the immune system may be contributing to the testis toxicity of this compound and for this purpose changes in macrophage and lymphocyte populations in the testes were determined. BP-2 at a dose of 100 mg/kg was administered dermally, twice daily at a dose of 100 mg/kg for 4-weeks. It was shown that BP-2 reduced the number and motility of sperm and increased the number of sperm showing morphological changes. By determining the concentration of sex hormones, a significant decrease in testosterone levels and an increase in the blood levels of 17β-estradiol were demonstrated. Similar to the results obtained from the blood samples, testosterone levels in the testes were lowered, which could affect sperm parameters. The effect of BP-2 on lowering testosterone levels and the number of sperm cells may be due to immunoactivation in the testes, because it has been detected that this compound significantly decreased the number of the immunosuppressive resident testicular macrophages (TMs) (CD68-CD163+), but increased pro-inflammatory TMs with monocyte-like properties (CD68+CD163-).
Collapse
Affiliation(s)
- Żaneta Broniowska
- Department of Biochemical Toxicology Medical College, Jagiellonian University, Medyczna 9, 30-688 Kraków, PL, Poland.
| | - Igor Tomczyk
- Department of Genetics and Evolution, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
| | - Paweł Grzmil
- Department of Genetics and Evolution, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
| | - Beata Bystrowska
- Department of Biochemical Toxicology Medical College, Jagiellonian University, Medyczna 9, 30-688 Kraków, PL, Poland
| | - Alicja Skórkowska
- Department of Biochemical Toxicology Medical College, Jagiellonian University, Medyczna 9, 30-688 Kraków, PL, Poland
| | - Alicja Maciejska
- Department of Biochemical Toxicology Medical College, Jagiellonian University, Medyczna 9, 30-688 Kraków, PL, Poland
| | - Grzegorz Kazek
- Department of Pharmacodynamics, Medical College, Jagiellonian University, Medyczna 9, 30-688 Krakow, Poland
| | - Bogusława Budziszewska
- Department of Biochemical Toxicology Medical College, Jagiellonian University, Medyczna 9, 30-688 Kraków, PL, Poland
| |
Collapse
|
4
|
Morin SM, Gregory KJ, Medeiros B, Terefe T, Hoshyar R, Alhusseiny A, Chen S, Schwartz RC, Jerry DJ, Vandenberg LN, Schneider SS. Benzophenone-3 exposure alters composition of tumor infiltrating immune cells and increases lung seeding of 4T1 breast cancer cells. ADVANCES IN CANCER BIOLOGY - METASTASIS 2023; 7:100080. [PMID: 37593105 PMCID: PMC10434833 DOI: 10.1016/j.adcanc.2022.100080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 08/19/2023]
Abstract
Environmental chemicals are a persistent and pervasive part of everyday life. A subset of environmental chemicals are xenoestrogens, compounds that bind to the estrogen receptor (ER) and drive estrogen-related processes. One such chemical, benzophenone-3 (BP3), is a common chemical in sunscreen. It is a potent UV protectant but also is quickly absorbed through the skin. While it has been approved by the FDA, there is a renewed interest in the safety of BP3, particularly in relation to breast cancer. The focus of this study was to examine the impact that BP3 has on triple negative breast cancer (TNBC) through alterations to cells in the immune microenvironment. In this study, we exposed female mice to one of two doses of BP3 before injecting them with a TNBC cell line. Several immune endpoints were examined both in the primary tissues and from in vitro studies of T cell behavior. Our studies revealed that in the lung tumor microenvironment, exposure to BP3 not only increased the number of metastases, but also the total area of tumor coverage. We also found that BP3 caused alterations in immune populations in a tissue-dependent manner, particularly in T cells. Taken together, our data suggest that while BP3 may not directly affect the proliferation of TNBC, growth and metastasis of TNBC-derived tumors can be altered by BP3 exposures via the alterations in the immune populations of the tumor microenvironment.
Collapse
Affiliation(s)
- Stephanie M. Morin
- Pioneer Valley Life Sciences Institute, Springfield, MA, 01199, USA
- Dept of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA
| | - Kelly J. Gregory
- Pioneer Valley Life Sciences Institute, Springfield, MA, 01199, USA
| | - Brenda Medeiros
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Amherst, 01003, USA
| | - Tigist Terefe
- Pioneer Valley Life Sciences Institute, Springfield, MA, 01199, USA
| | - Reyhane Hoshyar
- Breast Cancer and the Environment Research Program, Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, USA
| | - Ahmed Alhusseiny
- University of Massachusetts Chan Medical School-Baystate, Department of Pathology, Springfield, MA, 01199, USA
| | - Shiuan Chen
- Department of Cancer Biology and Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Richard C. Schwartz
- Breast Cancer and the Environment Research Program, Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, USA
| | - D. Joseph Jerry
- Dept of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA
| | - Laura N. Vandenberg
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Amherst, 01003, USA
| | - Sallie S. Schneider
- Pioneer Valley Life Sciences Institute, Springfield, MA, 01199, USA
- Dept of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA
- University of Massachusetts Chan Medical School-Baystate, Department of Surgery, Springfield, MA, 01199, USA
| |
Collapse
|
5
|
Mustieles V, Balogh RK, Axelstad M, Montazeri P, Márquez S, Vrijheid M, Draskau MK, Taxvig C, Peinado FM, Berman T, Frederiksen H, Fernández MF, Marie Vinggaard A, Andersson AM. Benzophenone-3: Comprehensive review of the toxicological and human evidence with meta-analysis of human biomonitoring studies. ENVIRONMENT INTERNATIONAL 2023; 173:107739. [PMID: 36805158 DOI: 10.1016/j.envint.2023.107739] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 01/03/2023] [Accepted: 01/05/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Benzophenone-3 (BP-3) and its major metabolite benzophenone-1 (BP-1) are widely used as UV filters in sunscreens and cosmetics to prevent sunburn and skin damage, or as stabilizers to prevent photodegradation in many commercial products. As a result, their presence is ubiquitous in the environment, wildlife and humans. Based on endocrine disruption concerns, international regulatory agencies are performing a closer evaluation. OBJECTIVE AND METHODS This work aimed to comprehensively review the available human relevant evidence for safety issues in MEDLINE/PubMed in order to create a structured database of studies, as well as to conduct an integrative analysis as part of the Human Biomonitoring for Europe (HBM4EU) Initiative. RESULTS A total of 1,635 titles and abstracts were screened and 254 references were evaluated and tabulated in detail, and classified in different categories: i) exposure sources and predictors; ii) human biomonitoring (HBM) exposure levels to perform a meta-analysis; iii) toxicokinetic data in both experimental animals and humans; iv) in vitro and in vivo rodent toxicity studies; and v) human data on effect biomarkers and health outcomes. Our integrative analysis showed that internal peak BP-3 concentrations achieved after a single whole-body application of a commercially available sunscreen (4% w/w) may overlap with concentrations eliciting endocrine disrupting effects in vitro, and with internal concentrations causing in vivo adverse female reproductive effects in rodents that were supported by still limited human data. The adverse effects in rodents included prolonged estrous cycle, altered uterine estrogen receptor gene expression, endometrium hyperplasia and altered proliferation and histology of the mammary gland, while human data indicated menstrual cycle hormonal alterations and increased risk of uterine fibroids and endometriosis. Among the modes of action reported (estrogenic, anti-androgenic, thyroid, etc.), BP-3 and especially BP-1 showed estrogenic activity at human-relevant concentrations, in agreement with the observed alterations in female reproductive endpoints. The meta-analysis of HBM studies identified a higher concern for North Americans, showing urinary BP-3 concentrations on average 10 and 20 times higher than European and Asian populations, respectively. DISCUSSION AND CONCLUSIONS Our work supports that these benzophenones present endocrine disrupting properties, endorsing recent European regulatory efforts to limit human exposure. The reproducible and comprehensive database generated may constitute a point of departure in future risk assessments to support regulatory initiatives. Meanwhile, individuals should not refrain from sunscreen use. Commercially available formulations using inorganic UV filters that are practically not absorbed into systemic circulation may be recommended to susceptible populations.
Collapse
Affiliation(s)
- Vicente Mustieles
- University of Granada, Biomedical Research Center (CIBM), Granada, Spain; Instituto de Investigación Biosanitaria (ibs. GRANADA), Granada, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Spain.
| | - Ria K Balogh
- Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Marta Axelstad
- National Food Institute, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Parisa Montazeri
- CIBER de Epidemiología y Salud Pública (CIBERESP), Spain; ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Sandra Márquez
- CIBER de Epidemiología y Salud Pública (CIBERESP), Spain; ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Martine Vrijheid
- CIBER de Epidemiología y Salud Pública (CIBERESP), Spain; ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Monica K Draskau
- National Food Institute, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Camilla Taxvig
- National Food Institute, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Francisco M Peinado
- University of Granada, Biomedical Research Center (CIBM), Granada, Spain; Instituto de Investigación Biosanitaria (ibs. GRANADA), Granada, Spain
| | - Tamar Berman
- Department of Environmental Health, Ministry of Health, Jerusalem 9101002, Israel
| | - Hanne Frederiksen
- Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Mariana F Fernández
- University of Granada, Biomedical Research Center (CIBM), Granada, Spain; Instituto de Investigación Biosanitaria (ibs. GRANADA), Granada, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Spain.
| | | | - Anna-Maria Andersson
- Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| |
Collapse
|
6
|
Abdul Aziz M, Brini F, Rouached H, Masmoudi K. Genetically engineered crops for sustainably enhanced food production systems. FRONTIERS IN PLANT SCIENCE 2022; 13:1027828. [PMID: 36426158 PMCID: PMC9680014 DOI: 10.3389/fpls.2022.1027828] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
Genetic modification of crops has substantially focused on improving traits for desirable outcomes. It has resulted in the development of crops with enhanced yields, quality, and tolerance to biotic and abiotic stresses. With the advent of introducing favorable traits into crops, biotechnology has created a path for the involvement of genetically modified (GM) crops into sustainable food production systems. Although these plants heralded a new era of crop production, their widespread adoption faces diverse challenges due to concerns about the environment, human health, and moral issues. Mitigating these concerns with scientific investigations is vital. Hence, the purpose of the present review is to discuss the deployment of GM crops and their effects on sustainable food production systems. It provides a comprehensive overview of the cultivation of GM crops and the issues preventing their widespread adoption, with appropriate strategies to overcome them. This review also presents recent tools for genome editing, with a special focus on the CRISPR/Cas9 platform. An outline of the role of crops developed through CRSIPR/Cas9 in achieving sustainable development goals (SDGs) by 2030 is discussed in detail. Some perspectives on the approval of GM crops are also laid out for the new age of sustainability. The advancement in molecular tools through plant genome editing addresses many of the GM crop issues and facilitates their development without incorporating transgenic modifications. It will allow for a higher acceptance rate of GM crops in sustainable agriculture with rapid approval for commercialization. The current genetic modification of crops forecasts to increase productivity and prosperity in sustainable agricultural practices. The right use of GM crops has the potential to offer more benefit than harm, with its ability to alleviate food crises around the world.
Collapse
Affiliation(s)
- Mughair Abdul Aziz
- Department of Integrative Agriculture, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Al−Ain, Abu−Dhabi, United Arab Emirates
| | - Faical Brini
- Biotechnology and Plant Improvement Laboratory, Centre of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Hatem Rouached
- Michigan State University, Plant and Soil Science Building, East Lansing, MI, United States
| | - Khaled Masmoudi
- Department of Integrative Agriculture, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Al−Ain, Abu−Dhabi, United Arab Emirates
| |
Collapse
|
7
|
A Cross-Sectional Study on Ethical Buyer Behavior towards Cruelty-Free Cosmetics: What Consequences for Female Leadership Practices? SUSTAINABILITY 2022. [DOI: 10.3390/su14137786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
This study extends the theory of planned behavior model and examines the humane factors (altruism, environmental knowledge, personal appearance concerns, attitude, perceived behavioral control, and subjective norms) that shape attitudes and buyer behavior toward cruelty-free cosmetics and the consumer characteristics that reflect their behavior toward such products. Recent global occurrences have affected human behavioral patterns, namely, the COVID-19 pandemic, which we aim to study. Has behavior changed to become more ethical? A survey was carried out involving a sample of 425 Portuguese participants (a feminine culture), following a convenience- and snowball-sampling procedure. Significant correlations were found between environmental knowledge, subjective norms, and buyer behavior toward cruelty-free cosmetics with attitude and environmental knowledge and buyer behavior. Through structural equation modeling to evaluate the conceptual model, a good model fit was found, being that standardized values in the model are significant except for regressions from perceived behavior control and personal appearance concerns to buyer behavior toward cruelty-free cosmetics. Women present higher values than men on attitude, altruism, environmental knowledge, and buyer behavior, in line with what is expected in a traditional and conservative feminine culture such as that to be found in Portugal. Such a result points to the need to promote increased gender equality, for example, in senior leadership roles, as women are seen to have the desirable qualities required for a more sustainable, cruelty-free, and humane society. This is an alert for human-resource managers in the region.
Collapse
|
8
|
Matouskova K, Bugos J, Schneider SS, Vandenberg LN. Exposure to Low Doses of Oxybenzone During Perinatal Development Alters Mammary Gland Stroma in Female Mice. FRONTIERS IN TOXICOLOGY 2022; 4:910230. [PMID: 35669359 PMCID: PMC9163781 DOI: 10.3389/ftox.2022.910230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/02/2022] [Indexed: 12/02/2022] Open
Abstract
Mammary stroma is a prominent modulator of epithelial development, and a complex set of interactions between these tissue compartments is essential for normal development, which can be either permissive or restrictive in tumor initiation and progression. During perinatal development, exposures of mice to oxybenzone, a common UV filter, environmental pollutant and endocrine disruptor, induce alterations in mammary epithelium. Our prior research indicates that oxybenzone alters mammary epithelial structures at puberty and in adulthood. We had also previously observed changes in the expression of hormone receptors at puberty (e.g., oxybenzone induced a decrease in the number of epithelial cells positive for progesterone receptor) and in adulthood (e.g., oxybenzone induced a decrease in the number of estrogen receptor-positive epithelial cells), and increased body weight in adulthood. Here, we investigated mammary stromal changes in BALB/c animals exposed during gestation and perinatal development to 0, 30, or 3000 μg oxybenzone/kg/day. In mice exposed to 30 μg/kg/day, we observed morphological changes in adulthood (e.g., a thicker periductal stroma and adipocytes that were considerably larger). We also observed an increased number of mast cells in the mammary stroma at puberty which may represent a transient influence of oxybenzone exposure. These results provide additional evidence that even low doses of oxybenzone can disrupt hormone sensitive outcomes in the mammary gland when exposures occur during critical windows of development, and some of these effects manifest in later life.
Collapse
Affiliation(s)
- Klara Matouskova
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA, United States
| | - Jennifer Bugos
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA, United States
| | | | - Laura N. Vandenberg
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA, United States
- *Correspondence: Laura N. Vandenberg,
| |
Collapse
|