1
|
Thambirajah AA, Wade MG, Verreault J, Buisine N, Alves VA, Langlois VS, Helbing CC. Disruption by stealth - Interference of endocrine disrupting chemicals on hormonal crosstalk with thyroid axis function in humans and other animals. ENVIRONMENTAL RESEARCH 2022; 203:111906. [PMID: 34418447 DOI: 10.1016/j.envres.2021.111906] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 08/04/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
Thyroid hormones (THs) are important regulators of growth, development, and homeostasis of all vertebrates. There are many environmental contaminants that are known to disrupt TH action, yet their mechanisms are only partially understood. While the effects of Endocrine Disrupting Chemicals (EDCs) are mostly studied as "hormone system silos", the present critical review highlights the complexity of EDCs interfering with TH function through their interactions with other hormonal axes involved in reproduction, stress, and energy metabolism. The impact of EDCs on components that are shared between hormone signaling pathways or intersect between pathways can thus extend beyond the molecular ramifications to cellular, physiological, behavioral, and whole-body consequences for exposed organisms. The comparatively more extensive studies conducted in mammalian models provides encouraging support for expanded investigation and highlight the paucity of data generated in other non-mammalian vertebrate classes. As greater genomics-based resources become available across vertebrate classes, better identification and delineation of EDC effects, modes of action, and identification of effective biomarkers suitable for HPT disruption is possible. EDC-derived effects are likely to cascade into a plurality of physiological effects far more complex than the few variables tested within any research studies. The field should move towards understanding a system of hormonal systems' interactions rather than maintaining hormone system silos.
Collapse
Affiliation(s)
- Anita A Thambirajah
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, V8P 5C2, Canada
| | - Michael G Wade
- Environmental Health Science & Research Bureau, Health Canada, Ottawa, ON, K1A 0K9, Canada
| | - Jonathan Verreault
- Centre de Recherche en Toxicologie de l'environnement (TOXEN), Département des Sciences Biologiques, Université du Québec à Montréal, Succursale Centre-ville, Montréal, QC, H3C 3P8, Canada
| | - Nicolas Buisine
- UMR7221 Physiologie Moléculaire et Adaptation, Centre National de la Recherche Scientifique, Muséum National d'Histoire Naturelle, Paris Cedex 05, France
| | - Verônica A Alves
- Centre Eau Terre Environnement, Institut National de La Recherche Scientifique (INRS), Québec City, QC, G1K 9A9, Canada
| | - Valerie S Langlois
- Centre Eau Terre Environnement, Institut National de La Recherche Scientifique (INRS), Québec City, QC, G1K 9A9, Canada
| | - Caren C Helbing
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, V8P 5C2, Canada.
| |
Collapse
|
2
|
Mikó Z, Nemesházi E, Ujhegyi N, Verebélyi V, Ujszegi J, Kásler A, Bertalan R, Vili N, Gál Z, Hoffmann OI, Hettyey A, Bókony V. Sex reversal and ontogeny under climate change and chemical pollution: are there interactions between the effects of elevated temperature and a xenoestrogen on early development in agile frogs? ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 285:117464. [PMID: 34380212 DOI: 10.1016/j.envpol.2021.117464] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/21/2021] [Accepted: 05/23/2021] [Indexed: 06/13/2023]
Abstract
Anthropogenic environmental change poses a special threat to species in which genetic sex determination can be overwritten by the thermal and chemical environment. Endocrine disrupting chemicals as well as extreme temperatures can induce sex reversal in such species, with potentially wide-ranging consequences for fitness, demography, population viability and evolution. Despite accumulating evidence suggesting that chemical and thermal effects may interact in ecological contexts, little is known about their combined effects on sex reversal. Here we assessed the simultaneous effects of high temperature (female-to-male sex-reversing agent) and 17α-ethinylestradiol (EE2), a widespread xenoestrogen (male-to-female sex-reversing agent), on sexual development and fitness-related traits in agile frogs (Rana dalmatina). We exposed tadpoles to a six-days heat wave (30 °C) and/or an ecologically relevant concentration of EE2 (30 ng/L) in one of three consecutive larval periods, and diagnosed sex reversals two months after metamorphosis using species-specific markers for genetic sexing. We found that high temperature induced female-to-male sex reversal, decreased survival, delayed metamorphosis, decreased body mass at metamorphosis, and increased the proportion of animals that had no fat bodies, while EE2 had no effect on these traits. Simultaneous exposure to heat and EE2 had non-additive effects on juvenile body mass, which were dependent on treatment timing and further complicated by a negative effect of sex reversal on body mass. These results show that environmentally relevant exposure to EE2 does not diminish the female-to-male sex-reversing effects of high temperature. Instead, our findings on growth suggest that climate change and chemical pollution may have complex consequences for individual fitness and population persistence in species with environment-sensitive sex determination.
Collapse
Affiliation(s)
- Zsanett Mikó
- Lendület Evolutionary Ecology Research Group, Plant Protection Institute, Centre for Agricultural Research, Eötvös Loránd Research Network, Herman Ottó u. 15, H-1022, Budapest, Hungary.
| | - Edina Nemesházi
- Lendület Evolutionary Ecology Research Group, Plant Protection Institute, Centre for Agricultural Research, Eötvös Loránd Research Network, Herman Ottó u. 15, H-1022, Budapest, Hungary; Conservation Genetics Research Group, Department of Ecology Institute for Biology, University of Veterinary Medicine, Budapest, István utca 2, H-1078, Budapest, Hungary; Konrad Lorenz Institute of Ethology, Department of Interdisciplinary Life Sciences, University of Veterinary Medicine, Savoyenstr. 1a, A-1160, Vienna, Austria
| | - Nikolett Ujhegyi
- Lendület Evolutionary Ecology Research Group, Plant Protection Institute, Centre for Agricultural Research, Eötvös Loránd Research Network, Herman Ottó u. 15, H-1022, Budapest, Hungary
| | - Viktória Verebélyi
- Lendület Evolutionary Ecology Research Group, Plant Protection Institute, Centre for Agricultural Research, Eötvös Loránd Research Network, Herman Ottó u. 15, H-1022, Budapest, Hungary; Fish Parasitology Research Team, Veterinary Medical Research Institute, Eötvös Loránd Research Network, Hungária körút 21, H-1143, Budapest, Hungary
| | - János Ujszegi
- Lendület Evolutionary Ecology Research Group, Plant Protection Institute, Centre for Agricultural Research, Eötvös Loránd Research Network, Herman Ottó u. 15, H-1022, Budapest, Hungary
| | - Andrea Kásler
- Lendület Evolutionary Ecology Research Group, Plant Protection Institute, Centre for Agricultural Research, Eötvös Loránd Research Network, Herman Ottó u. 15, H-1022, Budapest, Hungary; Department of Systematic Zoology and Ecology, Institute of Biology, Eötvös Loránd University, Pázmány Péter Sétány 1/c, H-1117, Budapest, Hungary
| | - Réka Bertalan
- Lendület Evolutionary Ecology Research Group, Plant Protection Institute, Centre for Agricultural Research, Eötvös Loránd Research Network, Herman Ottó u. 15, H-1022, Budapest, Hungary
| | - Nóra Vili
- Conservation Genetics Research Group, Department of Ecology Institute for Biology, University of Veterinary Medicine, Budapest, István utca 2, H-1078, Budapest, Hungary
| | - Zoltán Gál
- Animal Biotechnology Department, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Science, Szent-Györgyi Albert u. 4, H-2100, Gödöllő, Hungary
| | - Orsolya I Hoffmann
- Animal Biotechnology Department, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Science, Szent-Györgyi Albert u. 4, H-2100, Gödöllő, Hungary
| | - Attila Hettyey
- Lendület Evolutionary Ecology Research Group, Plant Protection Institute, Centre for Agricultural Research, Eötvös Loránd Research Network, Herman Ottó u. 15, H-1022, Budapest, Hungary
| | - Veronika Bókony
- Lendület Evolutionary Ecology Research Group, Plant Protection Institute, Centre for Agricultural Research, Eötvös Loránd Research Network, Herman Ottó u. 15, H-1022, Budapest, Hungary; Department of Systematic Zoology and Ecology, Institute of Biology, Eötvös Loránd University, Pázmány Péter Sétány 1/c, H-1117, Budapest, Hungary
| |
Collapse
|
3
|
Alcaraz AJG, Mikulášek K, Potěšil D, Park B, Shekh K, Ewald J, Burbridge C, Zdráhal Z, Schneider D, Xia J, Crump D, Basu N, Hecker M. Assessing the Toxicity of 17α-Ethinylestradiol in Rainbow Trout Using a 4-Day Transcriptomics Benchmark Dose (BMD) Embryo Assay. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:10608-10618. [PMID: 34292719 DOI: 10.1021/acs.est.1c02401] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
There is an urgent demand for more efficient and ethical approaches in ecological risk assessment. Using 17α-ethinylestradiol (EE2) as a model compound, this study established an embryo benchmark dose (BMD) assay for rainbow trout (RBT; Oncorhynchus mykiss) to derive transcriptomic points-of-departure (tPODs) as an alternative to live-animal tests. Embryos were exposed to graded concentrations of EE2 (measured: 0, 1.13, 1.57, 6.22, 16.3, 55.1, and 169 ng/L) from hatch to 4 and up to 60 days post-hatch (dph) to assess molecular and apical responses, respectively. Whole proteome analyses of alevins did not show clear estrogenic effects. In contrast, transcriptomics revealed responses that were in agreement with apical effects, including excessive accumulation of intravascular and hepatic proteinaceous fluid and significant increases in mortality at 55.1 and 169 ng/L EE2 at later time points. Transcriptomic BMD analysis estimated the median of the 20th lowest geneBMD to be 0.18 ng/L, the most sensitive tPOD. Other estimates (0.78, 3.64, and 1.63 ng/L for the 10th percentile geneBMD, first peak geneBMD distribution, and median geneBMD of the most sensitive over-represented pathway, respectively) were within the same order of magnitude as empirically derived apical PODs for EE2 in the literature. This 4-day alternative RBT embryonic assay was effective in deriving tPODs that are protective of chronic effects of EE2.
Collapse
Affiliation(s)
- Alper James G Alcaraz
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5B3
| | - Kamil Mikulášek
- Central European Institute of Technology, Masaryk University, Brno CZ-625 00, Czech Republic
| | - David Potěšil
- Central European Institute of Technology, Masaryk University, Brno CZ-625 00, Czech Republic
| | - Bradley Park
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5B3
| | - Kamran Shekh
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5B3
| | - Jessica Ewald
- Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, Quebec, Canada H9X 3V9
| | - Connor Burbridge
- Global Institute for Food Security, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 0W9
| | - Zbyněk Zdráhal
- Central European Institute of Technology, Masaryk University, Brno CZ-625 00, Czech Republic
| | - David Schneider
- Global Institute for Food Security, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 0W9
- School of the Environment and Sustainability, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5C8
| | - Jianguo Xia
- Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, Quebec, Canada H9X 3V9
| | - Doug Crump
- Environment and Climate Change Canada, National Wildlife Research Centre, Ottawa, Ontario, Canada K1A 0H3
| | - Niladri Basu
- Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, Quebec, Canada H9X 3V9
| | - Markus Hecker
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5B3
- School of the Environment and Sustainability, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5C8
| |
Collapse
|
4
|
Alcaraz AJG, Potěšil D, Mikulášek K, Green D, Park B, Burbridge C, Bluhm K, Soufan O, Lane T, Pipal M, Brinkmann M, Xia J, Zdráhal Z, Schneider D, Crump D, Basu N, Hogan N, Hecker M. Development of a Comprehensive Toxicity Pathway Model for 17α-Ethinylestradiol in Early Life Stage Fathead Minnows ( Pimephales promelas). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:5024-5036. [PMID: 33755441 DOI: 10.1021/acs.est.0c05942] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
There is increasing pressure to develop alternative ecotoxicological risk assessment approaches that do not rely on expensive, time-consuming, and ethically questionable live animal testing. This study aimed to develop a comprehensive early life stage toxicity pathway model for the exposure of fish to estrogenic chemicals that is rooted in mechanistic toxicology. Embryo-larval fathead minnows (FHM; Pimephales promelas) were exposed to graded concentrations of 17α-ethinylestradiol (water control, 0.01% DMSO, 4, 20, and 100 ng/L) for 32 days. Fish were assessed for transcriptomic and proteomic responses at 4 days post-hatch (dph), and for histological and apical end points at 28 dph. Molecular analyses revealed core responses that were indicative of observed apical outcomes, including biological processes resulting in overproduction of vitellogenin and impairment of visual development. Histological observations indicated accumulation of proteinaceous fluid in liver and kidney tissues, energy depletion, and delayed or suppressed gonad development. Additionally, fish in the 100 ng/L treatment group were smaller than controls. Integration of omics data improved the interpretation of perturbations in early life stage FHM, providing evidence of conservation of toxicity pathways across levels of biological organization. Overall, the mechanism-based embryo-larval FHM model showed promise as a replacement for standard adult live animal tests.
Collapse
Affiliation(s)
- Alper James G Alcaraz
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada
| | - David Potěšil
- Central European Institute of Technology, Masaryk University, Brno 625 00, Czech Republic
| | - Kamil Mikulášek
- Central European Institute of Technology, Masaryk University, Brno 625 00, Czech Republic
| | - Derek Green
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada
| | - Bradley Park
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada
| | - Connor Burbridge
- Global Institute for Food Security, University of Saskatchewan, Saskatoon, Saskatchewan S7N 0W9, Canada
| | - Kerstin Bluhm
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada
| | - Othman Soufan
- Computer Science Department, St. Francis Xavier University, Antigonish, Nova Scotia B2G 2W5, Canada
| | - Taylor Lane
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada
- Department of Environment and Geography, York University, York YO10 5NG, United Kingdom
| | - Marek Pipal
- RECETOX, Masaryk University, Brno 625 00, Czech Republic
| | - Markus Brinkmann
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada
- School of the Environment and Sustainability, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5C8, Canada
- Global Institute for Water Security, University of Saskatchewan, Saskatoon, Saskatchewan S7N 3H5, Canada
| | - Jianguo Xia
- Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, Quebec H9X 3V9, Canada
| | - Zbyněk Zdráhal
- Central European Institute of Technology, Masaryk University, Brno 625 00, Czech Republic
| | - David Schneider
- Global Institute for Food Security, University of Saskatchewan, Saskatoon, Saskatchewan S7N 0W9, Canada
- School of the Environment and Sustainability, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5C8, Canada
| | - Doug Crump
- Environment and Climate Change Canada, National Wildlife Research Centre, Ottawa, Ontario K1A 0H3, Canada
| | - Niladri Basu
- Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, Quebec H9X 3V9, Canada
| | - Natacha Hogan
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada
- Department of Animal and Poultry Science, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A8, Canada
| | - Markus Hecker
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada
- School of the Environment and Sustainability, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5C8, Canada
| |
Collapse
|
5
|
Long Z, Fan J, Wu G, Liu X, Wu H, Liu J, Chen Y, Su S, Cheng X, Xu Z, Su H, Cao M, Zhang C, Hai C, Wang X. Gestational bisphenol A exposure induces fatty liver development in male offspring mice through the inhibition of HNF1b and upregulation of PPARγ. Cell Biol Toxicol 2021; 37:65-84. [PMID: 32623698 PMCID: PMC7851022 DOI: 10.1007/s10565-020-09535-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 05/30/2020] [Indexed: 02/08/2023]
Abstract
Bisphenol A (BPA) is an endocrine-disrupting chemical (EDC) associated with non-alcoholic fatty liver disease (NAFLD). The effects of gestational BPA exposure on hepatic lipid accumulation in offspring are not fully understood. Here, we investigate the sex-dependent effects of gestational BPA exposure on hepatic lipid and glucose metabolism in the offspring of mice to reveal the mechanisms underlying gestational BPA exposure-associated NAFLD. Pregnant mice were administered gavage with or without 1 μg kg-1 day-1 BPA at embryonic day 7.5 (E7.5)-E16.5. Hepatic glucose and lipid metabolism were evaluated in these models. Both male and female offspring mice exhibited hepatic fatty liver after BPA treatment. Lipid accumulation and dysfunction of glucose metabolism were observed in male offspring. We revealed abnormal expression of lipid regulators in the liver and that inhibition of peroxisome proliferator-activated receptor γ (PPARγ) repressed hepatic lipid accumulation induced by gestational BPA exposure. We also found a sex-dependent decrease of hepatocyte nuclear factor 1b (HNF1b) expression in male offspring. The transcriptional repression of PPARγ by HNF1b was confirmed in L02 cells. Downregulation of HNF1b, upregulation of PPARγ, and subsequent upregulation of hepatic lipid accumulation were essential for NAFLD development in male offspring gestationally exposed to BPA as well as BPA-exposed adult male mice. Dysregulation of the HNF1b/PPARγ pathway may be involved in gestational BPA exposure-induced NAFLD in male offspring. These data provide new insights into the mechanism of gestational BPA exposure-associated sex-dependent glucose and lipid metabolic dysfunction. Graphical abstract Schematic of the mechanism of gestational BPA exposure-induced glucose and lipid metabolic dysfunction.
Collapse
Affiliation(s)
- Zi Long
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Medical University (Fourth Military Medical University), Changle West Road 169, Xi'an, 710032, Shaanxi Province, China
| | - Junshu Fan
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Medical University (Fourth Military Medical University), Changle West Road 169, Xi'an, 710032, Shaanxi Province, China
| | - Guangyuan Wu
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Medical University (Fourth Military Medical University), Changle West Road 169, Xi'an, 710032, Shaanxi Province, China
| | - Xiyu Liu
- Department of Biomedical Engineering, Air Force Medical University (Fourth Military Medical University), Xi'an, 710032, China
| | - Hao Wu
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Medical University (Fourth Military Medical University), Changle West Road 169, Xi'an, 710032, Shaanxi Province, China
| | - Jiangzheng Liu
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Medical University (Fourth Military Medical University), Changle West Road 169, Xi'an, 710032, Shaanxi Province, China
| | - Yao Chen
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Medical University (Fourth Military Medical University), Changle West Road 169, Xi'an, 710032, Shaanxi Province, China
| | - Shuhao Su
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Medical University (Fourth Military Medical University), Changle West Road 169, Xi'an, 710032, Shaanxi Province, China
| | - Xiaodong Cheng
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Medical University (Fourth Military Medical University), Changle West Road 169, Xi'an, 710032, Shaanxi Province, China
| | - Zhongrui Xu
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Medical University (Fourth Military Medical University), Changle West Road 169, Xi'an, 710032, Shaanxi Province, China
| | - Hongfei Su
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Medical University (Fourth Military Medical University), Changle West Road 169, Xi'an, 710032, Shaanxi Province, China
| | - Meng Cao
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Medical University (Fourth Military Medical University), Changle West Road 169, Xi'an, 710032, Shaanxi Province, China
| | - Chunping Zhang
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Medical University (Fourth Military Medical University), Changle West Road 169, Xi'an, 710032, Shaanxi Province, China
| | - Chunxu Hai
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Medical University (Fourth Military Medical University), Changle West Road 169, Xi'an, 710032, Shaanxi Province, China.
| | - Xin Wang
- Department of Toxicology, Shaanxi Key Lab of Free Radical Biology and Medicine, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Medical University (Fourth Military Medical University), Changle West Road 169, Xi'an, 710032, Shaanxi Province, China.
| |
Collapse
|
6
|
Oike A, Nakamura Y, Yasumasu S, Ito E, Nakamura M. A threshold dosage of estrogen for male-to-female sex reversal in the Glandirana rugosa frog. JOURNAL OF EXPERIMENTAL ZOOLOGY PART 2020; 333:652-659. [PMID: 32851801 DOI: 10.1002/jez.2408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 08/02/2020] [Indexed: 11/08/2022]
Abstract
Steroid hormones play very important roles in gonadal differentiation in many vertebrate species. Previously, we have determined a threshold dosage of testosterone (T) to induce female-to-male sex reversal in Glandirana rugosa frogs. Genetic females formed a mixture of testis and ovary, the so-called ovotestis, when tadpoles of G. rugosa were reared in water containing the dosage of T, which enabled us to detect primary changes in the histology of the masculinizing gonads. In this study, we determined a threshold dosage of estradiol-17β (E2) to cause male-to-female sex reversal in this frog. We observed first signs of histological changes in the ovotestes, when tadpoles were reared in water containing the dosage of E2. Ovotestes were significantly larger than wild-type testes in size. By E2 treatment, male germ cells degenerated in the feminizing testis leading to their final disappearance. In parallel, oocytes appeared in the medulla of the ovotestis and later in the cortex as well. Quantitative polymerase chain reaction analysis revealed that the expression of sex-related genes involved in testis formation was significantly decreased in the ovotestis. In addition, immuno-positive signals of CYP17 that is involved in testis differentiation in this frog disappeared in the medulla first and then in the cortex. These results suggested that oocytes expanded in the feminizing gonad (ovary) contemporaneously with male germ cell disappearance. Primary changes in the histology of the gonads during male-to-female sex reversal occurred in the medulla and later in the cortex. This direction was opposite to that observed during female-to-male sex reversal in the G. rugosa frog.
Collapse
Affiliation(s)
- Akira Oike
- Department of Biology, Faculty of Education and Integrated Arts and Sciences, Waseda University, Shinjuku-ku, Tokyo, Japan
| | - Yoriko Nakamura
- Department of Science Education, Faculty of Education, Ehime University, Bunkyo-cho, Matsuyama, Ehime, Japan
| | - Shigeki Yasumasu
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Chiyoda-ku, Tokyo, Japan
| | - Etsuro Ito
- Department of Biology, Faculty of Education and Integrated Arts and Sciences, Waseda University, Shinjuku-ku, Tokyo, Japan
| | - Masahisa Nakamura
- Waseda Research Institute for Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, Japan
| |
Collapse
|
7
|
Rojas-Hucks S, Gutleb AC, González CM, Contal S, Mehennaoui K, Jacobs A, Witters HE, Pulgar J. Xenopus laevis as a Bioindicator of Endocrine Disruptors in the Region of Central Chile. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2019; 77:390-408. [PMID: 31422435 DOI: 10.1007/s00244-019-00661-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Accepted: 08/06/2019] [Indexed: 06/10/2023]
Abstract
One of the direct causes of biodiversity loss is environmental pollution resulting from the use of chemicals. Different kinds of chemicals, such as persistent organic pollutants and some heavy metals, can be endocrine disruptors, which act at low doses over a long period of time and have a negative effect on the reproductive and thyroid system in vertebrates worldwide. Research on the effects of endocrine disruptors and the use of bioindicators in neotropical ecosystems where pressure on biodiversity is high is scarce. In Chile, although endocrine disruptors have been detected at different concentrations in the environments of some ecosystems, few studies have been performed on their biological effects in the field. In this work, Xenopus laevis (African clawed frog), an introduced species, is used as a bioindicator for the presence of endocrine disruptors in aquatic systems with different degrees of contamination in a Mediterranean zone in central Chile. For the first time for Chile, alterations are described that can be linked to exposure to endocrine disruptors, such as vitellogenin induction, decreased testosterone in male frogs, and histological changes in gonads. Dioxin-like and oestrogenic activity was detected in sediments at locations where it seem to be related to alterations found in the frogs. In addition, an analysis of land use/cover use revealed that urban soil was the best model to explain the variations in frog health indicators. This study points to the usefulness of an invasive species as a bioindicator for the presence of endocrine-disruptive chemicals.
Collapse
Affiliation(s)
- Sylvia Rojas-Hucks
- Departamento de Ecología y Biodiversidad, Facultad Ciencias de la Vida, Universidad Andres Bello, República 440, Santiago, Chile.
| | - Arno C Gutleb
- Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 avenue des Hauts-Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Carlos M González
- Escuela de Medicina Veterinaria, Facultad Ciencias de la Vida, Universidad Andres Bello, República 440, Santiago, Chile
| | - Servane Contal
- Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 avenue des Hauts-Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Kahina Mehennaoui
- Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 avenue des Hauts-Fourneaux, Esch-sur-Alzette, Luxembourg
| | - An Jacobs
- Department Environmental Health and Risk, Team Applied Bio and Molecular Sciences (ABS), Flemish Institute for Technological Research (VITO), Boeretang 200, 2400, Mol, Belgium
| | - Hilda E Witters
- Department Environmental Health and Risk, Team Applied Bio and Molecular Sciences (ABS), Flemish Institute for Technological Research (VITO), Boeretang 200, 2400, Mol, Belgium
| | - José Pulgar
- Departamento de Ecología y Biodiversidad, Facultad Ciencias de la Vida, Universidad Andres Bello, República 440, Santiago, Chile
| |
Collapse
|
8
|
Pennington MJ, Rothman JA, Jones MB, McFrederick QS, Gan J, Trumble JT. Effects of contaminants of emerging concern on Myzus persicae (Sulzer, Hemiptera: Aphididae) biology and on their host plant, Capsicum annuum. ENVIRONMENTAL MONITORING AND ASSESSMENT 2018; 190:125. [PMID: 29423658 DOI: 10.1007/s10661-018-6503-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 01/22/2018] [Indexed: 06/08/2023]
Abstract
Many countries are utilizing reclaimed wastewater for agriculture as water demands due to drought, rising temperatures, and expanding human populations. Unfortunately, wastewater often contains biologically active, pseudopersistant pharmaceuticals, even after treatment. Runoff from agriculture and effluent from wastewater treatment plants also contribute high concentrations of pharmaceuticals to the environment. This study assessed the effects of common pharmaceuticals on an agricultural pest, the aphid Myzus persicae (Sulzer, Hemiptera: Aphididae). Second instar nymphs were transferred to bell peppers (Capsicum annuum) that were grown hydroponically. Treatment plants were spiked with contaminants of emerging concern (CECs) at environmentally relevant concentrations found in reclaimed wastewater. M. persicae displayed no differences in population growth or microbial community differences due to chemical treatments. Plants, however, displayed significant growth reduction in antibiotic and mixture treatments, specifically in wet root masses. Antibiotic treatment masses were significantly reduced in the total and root wet masses. Mixture treatments displayed an overall reduction in plant root wet mass. Our results suggest that the use of reclaimed wastewater for crop irrigation would not affect aphid populations, but could hinder or delay crop production.
Collapse
Affiliation(s)
- Marcus John Pennington
- Graduate Program in Environmental Toxicology, University of California, Riverside, CA, 92521, USA.
- Department of Entomology, University of California, 417 Entomology Building, Riverside, CA, 92521, USA.
| | - Jason A Rothman
- Department of Entomology, University of California, 417 Entomology Building, Riverside, CA, 92521, USA
- Graduate Program in Microbiology, University of California, Riverside, CA, 92521, USA
| | - Michael Bellinger Jones
- Department of Entomology, University of California, 417 Entomology Building, Riverside, CA, 92521, USA
| | - Quinn S McFrederick
- Department of Entomology, University of California, 417 Entomology Building, Riverside, CA, 92521, USA
- Graduate Program in Microbiology, University of California, Riverside, CA, 92521, USA
| | - Jay Gan
- Graduate Program in Environmental Toxicology, University of California, Riverside, CA, 92521, USA
- Department of Environmental Science, University of California, Riverside, CA, 92521, USA
| | - John T Trumble
- Graduate Program in Environmental Toxicology, University of California, Riverside, CA, 92521, USA
- Department of Entomology, University of California, 417 Entomology Building, Riverside, CA, 92521, USA
| |
Collapse
|
9
|
Pennington MJ, Rothman JA, Dudley SL, Jones MB, McFrederick QS, Gan J, Trumble JT. Contaminants of emerging concern affect Trichoplusia ni growth and development on artificial diets and a key host plant. Proc Natl Acad Sci U S A 2017; 114:E9923-E9931. [PMID: 29087336 PMCID: PMC5699077 DOI: 10.1073/pnas.1713385114] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Many countries are utilizing reclaimed wastewater for agriculture because drought, rising temperatures, and expanding human populations are increasing water demands. Unfortunately, wastewater often contains biologically active, pseudopersistent pharmaceuticals, even after treatment. Runoff from farms and output from wastewater treatment plants also contribute high concentrations of pharmaceuticals to the environment. This study assessed the effects of common pharmaceuticals on an agricultural pest, Trichoplusia ni (Lepidoptera: Noctuidae). Larvae were reared on artificial diets spiked with contaminants of emerging concern (CECs) at environmentally relevant concentrations. Trichoplusia ni showed increased developmental time and mortality when reared on artificial diets containing antibiotics, hormones, or a mixture of contaminants. Mortality was also increased when T. ni were reared on tomatoes grown hydroponically with the same concentrations of antibiotics. The antibiotic-treated plants translocated ciprofloxacin through their tissues to roots, shoots, and leaves. Microbial communities of T. ni changed substantially between developmental stages and when exposed to CECs in their diets. Our results suggest that use of reclaimed wastewater for irrigation of crops can affect the developmental biology and microbial communities of an insect of agricultural importance.
Collapse
Affiliation(s)
- Marcus J Pennington
- Department of Entomology, University of California, Riverside, CA 92521
- Graduate Program in Environmental Toxicology, University of California, Riverside, CA 92521
| | - Jason A Rothman
- Department of Entomology, University of California, Riverside, CA 92521
- Graduate Program in Microbiology, University of California, Riverside, CA 92521
| | - Stacia L Dudley
- Graduate Program in Environmental Toxicology, University of California, Riverside, CA 92521
- Department of Environmental Science, University of California, Riverside, CA 92521
| | - Michael B Jones
- Department of Entomology, University of California, Riverside, CA 92521
| | - Quinn S McFrederick
- Department of Entomology, University of California, Riverside, CA 92521
- Graduate Program in Microbiology, University of California, Riverside, CA 92521
| | - Jay Gan
- Graduate Program in Environmental Toxicology, University of California, Riverside, CA 92521
- Department of Environmental Science, University of California, Riverside, CA 92521
| | - John T Trumble
- Department of Entomology, University of California, Riverside, CA 92521;
- Graduate Program in Environmental Toxicology, University of California, Riverside, CA 92521
| |
Collapse
|
10
|
Pennington MJ, Rothman JA, Jones MB, McFrederick QS, Gan J, Trumble JT. Effects of contaminants of emerging concern on Megaselia scalaris (Lowe, Diptera: Phoridae) and its microbial community. Sci Rep 2017; 7:8165. [PMID: 28811598 PMCID: PMC5557979 DOI: 10.1038/s41598-017-08683-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 07/17/2017] [Indexed: 11/09/2022] Open
Abstract
Drought, rising temperatures, and expanding human populations are increasing water demands. Many countries are extending potable water supplies by irrigating crops with wastewater. Unfortunately, wastewater contains biologically active, long-lived pharmaceuticals, even after treatment. Run-off from farms and wastewater treatment plant overflows contribute high concentrations of pharmaceuticals to the environment. This study assessed the effects of common pharmaceuticals on a cosmopolitan saprophagous insect, Megaselia scalaris (Diptera: Phoridae). Larvae were reared on artificial diets spiked with contaminants of emerging concern (CECs) at environmentally relevant concentrations. Female flies showed no oviposition preference for treated or untreated diets. Larvae exposed to caffeine in diets showed increased mortality, and larvae fed antibiotics and hormones showed signs of slowed development, especially in females. The normal sex ratio observed in M. scalaris from control diets was affected by exposure to caffeine and pharmaceutical mixture treatments. There was an overall effect of treatment on the flies’ microbial communities; notably, caffeine fed insects displayed higher microbial variability. Eight bacterial families accounted for approximately 95% of the total microbes in diet and insects. Our results suggest that CECs at environmentally relevant concentrations can affect the biology and microbial communities of an insect of ecological and medical importance.
Collapse
Affiliation(s)
- Marcus J Pennington
- Department of Entomology, University of California, Riverside, CA, 92521, USA. .,Graduate Program in Environmental Toxicology, University of California, Riverside, CA, 92521, USA.
| | - Jason A Rothman
- Department of Entomology, University of California, Riverside, CA, 92521, USA.,Graduate Program in Microbiology, University of California, Riverside, CA, 92521, USA
| | - Michael B Jones
- Department of Entomology, University of California, Riverside, CA, 92521, USA
| | - Quinn S McFrederick
- Department of Entomology, University of California, Riverside, CA, 92521, USA.,Graduate Program in Microbiology, University of California, Riverside, CA, 92521, USA
| | - Jay Gan
- Graduate Program in Environmental Toxicology, University of California, Riverside, CA, 92521, USA.,Department of Environmental Chemistry, University of California, Riverside, CA, 92521, USA
| | - John T Trumble
- Department of Entomology, University of California, Riverside, CA, 92521, USA
| |
Collapse
|
11
|
Tamschick S, Rozenblut-Kościsty B, Ogielska M, Lehmann A, Lymberakis P, Hoffmann F, Lutz I, Schneider RJ, Kloas W, Stöck M. Impaired gonadal and somatic development corroborate vulnerability differences to the synthetic estrogen ethinylestradiol among deeply diverged anuran lineages. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2016; 177:503-514. [PMID: 27434076 DOI: 10.1016/j.aquatox.2016.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 06/29/2016] [Accepted: 07/04/2016] [Indexed: 06/06/2023]
Abstract
Amphibians are undergoing a global decline. One poorly investigated reason could be the pollution of aquatic habitats by endocrine disrupting compounds (EDCs). We tested the susceptibility to the synthetically stabilized estrogen 17α-ethinylestradiol (EE2) in three deeply diverged anuran species, differing in sex determination systems, types of gonadogenesis and larval ecologies. To understand whether data from the amphibian model Xenopus laevis (Pipidae) are analogous and applicable to only distantly related non-model amphibians, tadpoles of X. laevis, Hyla arborea (Hylidae) and Bufo viridis (Bufonidae) were simultaneously exposed to 50, 500 and 5000ng/L EE2 from hatching until completion of metamorphosis, using a flow-through-system under identical experimental conditions. Comparing molecularly established genetic with histologically assessed phenotypic sex in all species, we have recently shown that EE2 provoked numerous genetic-male-to-phenotypic-female sex reversals and mixed sex individuals, confirming overall its expected feminizing effect. In the present study, we focus on the influence of EE2 on gonadal and somatic development. Anatomy and histology revealed several species-specific effects. In both non-model species, H. arborea and B. viridis, high numbers of anatomically impaired gonads were observed. In H. arborea, exposed to 5000ng/L EE2, numerous underdeveloped gonads were detected. Whereas EE2 did not alter snout-to-vent length and body weight of X. laevis metamorphs, H. arborea showed a treatment-dependent decrease, while B. viridis exhibited an increase in body weight and snout-to-vent length. Apart from a concentration-dependent occurrence of yellowish skin color in several H. arborea, no organ-specific effects were detected. Since EE2 ubiquitously occurs in many aquatic ecosystems and affects sexual and somatic development, among EDCs, it may indeed contribute to amphibian decline. The inter-species variation in developmental EE2-effects corroborates species-specific vulnerability differences towards EDCs between deeply diverged amphibian groups.
Collapse
Affiliation(s)
- Stephanie Tamschick
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301 & 310, D-12587 Berlin, Germany.
| | - Beata Rozenblut-Kościsty
- Department of Evolutionary Biology and Conservation of Vertebrates, Wroclaw University, Sienkiewicza 21, 50-335 Wroclaw, Poland.
| | - Maria Ogielska
- Department of Evolutionary Biology and Conservation of Vertebrates, Wroclaw University, Sienkiewicza 21, 50-335 Wroclaw, Poland.
| | - Andreas Lehmann
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Str. 11, D-12489 Berlin, Germany.
| | - Petros Lymberakis
- Natural History Museum of Crete, University of Crete, Knossou Ave., 71409 Heraklion, Crete, Greece.
| | - Frauke Hoffmann
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301 & 310, D-12587 Berlin, Germany.
| | - Ilka Lutz
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301 & 310, D-12587 Berlin, Germany.
| | - Rudolf J Schneider
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Str. 11, D-12489 Berlin, Germany.
| | - Werner Kloas
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301 & 310, D-12587 Berlin, Germany.
| | - Matthias Stöck
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301 & 310, D-12587 Berlin, Germany.
| |
Collapse
|
12
|
Tamschick S, Rozenblut-Kościsty B, Ogielska M, Lehmann A, Lymberakis P, Hoffmann F, Lutz I, Kloas W, Stöck M. Sex reversal assessments reveal different vulnerability to endocrine disruption between deeply diverged anuran lineages. Sci Rep 2016; 6:23825. [PMID: 27029458 PMCID: PMC4814869 DOI: 10.1038/srep23825] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 03/15/2016] [Indexed: 01/17/2023] Open
Abstract
Multiple anthropogenic stressors cause worldwide amphibian declines. Among several poorly investigated causes is global pollution of aquatic ecosystems with endocrine disrupting compounds (EDCs). These substances interfere with the endocrine system and can affect the sexual development of vertebrates including amphibians. We test the susceptibility to an environmentally relevant contraceptive, the artificial estrogen 17α-ethinylestradiol (EE2), simultaneously in three deeply divergent systematic anuran families, a model-species, Xenopus laevis (Pipidae), and two non-models, Hyla arborea (Hylidae) and Bufo viridis (Bufonidae). Our new approach combines synchronized tadpole exposure to three EE2-concentrations (50, 500, 5,000 ng/L) in a flow-through-system and pioneers genetic and histological sexing of metamorphs in non-model anurans for EDC-studies. This novel methodology reveals striking quantitative differences in genetic-male-to-phenotypic-female sex reversal in non-model vs. model species. Our findings qualify molecular sexing in EDC-analyses as requirement to identify sex reversals and state-of-the-art approaches as mandatory to detect species-specific vulnerabilities to EDCs in amphibians.
Collapse
Affiliation(s)
- Stephanie Tamschick
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301 & 310, D-12587 Berlin, Germany
| | - Beata Rozenblut-Kościsty
- Department of Evolutionary Biology and Conservation of Vertebrates, Wroclaw University, Sienkiewicza 21, 50-335 Wroclaw, Poland
| | - Maria Ogielska
- Department of Evolutionary Biology and Conservation of Vertebrates, Wroclaw University, Sienkiewicza 21, 50-335 Wroclaw, Poland
| | - Andreas Lehmann
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Str. 11, D-12489 Berlin, Germany
| | - Petros Lymberakis
- Natural History Museum of Crete, University of Crete, Knossou Ave., 71409 Heraklion, Crete, Greece
| | - Frauke Hoffmann
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301 & 310, D-12587 Berlin, Germany
| | - Ilka Lutz
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301 & 310, D-12587 Berlin, Germany
| | - Werner Kloas
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301 & 310, D-12587 Berlin, Germany
| | - Matthias Stöck
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301 & 310, D-12587 Berlin, Germany
| |
Collapse
|
13
|
Pennington MJ, Rivas NG, Prager SM, Walton WE, Trumble JT. Pharmaceuticals and personal care products alter the holobiome and development of a medically important mosquito. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2015; 203:199-207. [PMID: 25913146 DOI: 10.1016/j.envpol.2015.04.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 03/30/2015] [Accepted: 04/08/2015] [Indexed: 06/04/2023]
Abstract
The increasing demand for fresh water has forced many countries to use reclaimed wastewater for agricultural purposes. This water contains pharmaceuticals and personal care products (PPCPs) that remain biologically active following passage through wastewater treatment plants. Run-off from farms and contaminated water from treatment facilities exposes aquatic ecosystems to PPCPs. This study examined the effects of PPCPs on a lower trophic organism. Culex quinquefasciatus larvae were reared in water contaminated with environmentally relevant concentrations of common PPCPs. Acetaminophen alone and a mixture of contaminants were found to increase developmental time of larvae. Susceptibility to Bti increased in larvae exposed to antibiotics, acetaminophen, or a mixture of PPCPs. Antibiotics, hormones, and the mixture altered the mosquito bacterial microbiome. Overall, the results indicate that at environmentally relevant concentrations, PPCPs in reclaimed water can have biologically important effects on an ecologically and medically important lower trophic level insect.
Collapse
Affiliation(s)
- Marcus J Pennington
- Department of Entomology, University of California, Riverside, CA 92521, USA; Graduate Program in Environmental Toxicology, University of California, Riverside, CA 92521, USA.
| | - Nicholas G Rivas
- Department of Entomology, University of California, Riverside, CA 92521, USA
| | - Sean M Prager
- Department of Entomology, University of California, Riverside, CA 92521, USA
| | - William E Walton
- Department of Entomology, University of California, Riverside, CA 92521, USA
| | - John T Trumble
- Department of Entomology, University of California, Riverside, CA 92521, USA; Graduate Program in Environmental Toxicology, University of California, Riverside, CA 92521, USA
| |
Collapse
|
14
|
Castillo-Briceno P, Kodjabachian L. Xenopus embryonic epidermis as a mucociliary cellular ecosystem to assess the effect of sex hormones in a non-reproductive context. Front Zool 2014; 11:9. [PMID: 24502321 PMCID: PMC4015847 DOI: 10.1186/1742-9994-11-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Accepted: 01/28/2014] [Indexed: 12/15/2022] Open
Abstract
Background How important are sexual hormones beyond their function in reproductive biology has yet to be understood. In this study, we analyzed the effects of sex steroids on the biology of the embryonic amphibian epidermis, which represents an easily amenable model of non-reproductive mucociliary epithelia (MCE). MCE are integrated systems formed by multiciliated (MC), mucus-secreting (MS) and mitochondrion-rich (MR) cell populations that are shaped by their microenvironment. Therefore, MCE could be considered as ecosystems at the cellular scale, found in a wide array of contexts from mussel gills to mammalian oviduct. Results We showed that the natural estrogen (estradiol, E2) and androgen (testosterone, T) as well as the synthetic estrogen (ethinyl-estradiol, EE2), all induced a significant enhancement of MC cell numbers. The effect of E2, T and EE2 extended to the MS and MR cell populations, to varying degrees. They also modified the expression profile of RNA MCE markers, and induced a range of “non-typical” cellular phenotypes, with mixed identities and aberrant morphologies, as revealed by imaging analysis through biomarker confocal detection and scanning electron microscopy. Finally, these hormones also affected tadpole pigmentation, revealing an effect on the entire cellular ecosystem of the Xenopus embryonic skin. Conclusions This study reveals the impact in vivo, at the molecular, cellular, tissue and organism levels, of sex steroids on non-reproductive mucociliary epithelium biogenesis, and validates the use of Xenopus as a relevant model system in this field.
Collapse
Affiliation(s)
- Patricia Castillo-Briceno
- Aix-Marseille Université, CNRS UMR 7288, IBDM, Campus de Luminy Case 907, 13288 Marseille Cedex 9, France.
| | | |
Collapse
|