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Bodziach K, Staniszewska M, Nehring I, Ożarowska A, Zaniewicz G, Meissner W. Endocrine disrupting bisphenol A, 4-tert-octylphenol and 4-nonylphenol in gonads of long-tailed ducks Clangula hyemalis wintering in the southern Baltic. ENVIRONMENTAL RESEARCH 2024; 243:117772. [PMID: 38029823 DOI: 10.1016/j.envres.2023.117772] [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: 09/20/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 12/01/2023]
Abstract
This paper focuses on determining the concentrations of phenol derivatives in the gonads of seabirds and examining the potential factors (age, sex and region) affecting the degree of their bioaccumulation. The study involved assays of bisphenol A (BPA), 4-tert-octylphenol (4-t-OP) and 4-nonylphenol (4-NP) in the gonads of long-tailed ducks taken as bycatch from the Southern Baltic region in 2015-2016. Among phenol derivatives, 4-NP was found to reach the highest concentrations in the gonads of long-tailed ducks, and its concentrations were in the range of <0.1-717.5 ng g-1 dw. The concentrations of BPA and 4-t-OP were similar and amounted to <0.4-181.6 ng g-1 dw and <0.1-192.4 ng g-1 dw respectively. The concentration levels of phenol derivatives in the birds' gonads were similar to the levels which had been observed to have negative endocrine effects in other authors studies. This shows that the studied xenoestrogens can interfere with the reproduction and development of birds. Moreover, adult long-tailed ducks had higher concentrations of phenol derivatives compared to immature ones, possibly resulting from long-term bioaccumulation, as well as from diverse pollution in their respective habitats. Particularly in the case of 4-NP, the median concentrations in gonads of adult birds were 2-fold higher than in immature ones. In turn, among adult long-tailed ducks, phenol derivatives were characterized by higher concentrations in males than in females, with almost 3 times and approx. 3.5 times higher median concentrations of BPA and 4-t-OP, respectively. Lower concentrations of phenol derivatives in female gonads may result from the additional elimination of pollutants from their bodies through the transfer of pollutants from mother to egg. The results show the need for further research on phenol derivatives in the gonads of birds, focusing on their impact on the reproductive system and early development.
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Affiliation(s)
- Karina Bodziach
- Toxic Substances Transformation Unit, Department of Chemical Oceanography and Marine Geology, Faculty of Oceanography and Geography, University of Gdansk, Al. Marszałka Piłsudskiego 46, 81-378, Gdynia, Poland
| | - Marta Staniszewska
- Toxic Substances Transformation Unit, Department of Chemical Oceanography and Marine Geology, Faculty of Oceanography and Geography, University of Gdansk, Al. Marszałka Piłsudskiego 46, 81-378, Gdynia, Poland.
| | - Iga Nehring
- Toxic Substances Transformation Unit, Department of Chemical Oceanography and Marine Geology, Faculty of Oceanography and Geography, University of Gdansk, Al. Marszałka Piłsudskiego 46, 81-378, Gdynia, Poland
| | - Agnieszka Ożarowska
- Ornithology Unit, Department of Vertebrate Ecology & Zoology, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308, Gdańsk, Poland
| | - Grzegorz Zaniewicz
- Ornithology Unit, Department of Vertebrate Ecology & Zoology, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308, Gdańsk, Poland
| | - Włodzimierz Meissner
- Ornithology Unit, Department of Vertebrate Ecology & Zoology, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308, Gdańsk, Poland
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Cheng Y, Shan Z, Zhou J, Bu Y, Li P, Lu S. Effects of long-term 4-nonylphenol dietary exposure on reproductive ability of Japanese quails (Coturnix japonica). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:2908-2917. [PMID: 30499090 DOI: 10.1007/s11356-018-3820-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 11/21/2018] [Indexed: 06/09/2023]
Abstract
As an endocrine disruptor, 4-nonylphenol (4-NP) is widespread in the environment. Here, we investigated the effect of long-term 4-NP dietary exposure on Japanese quails (Coturnix japonica). A total of 72 quails were evenly divided into 24 cages (12 cages for the reproductive toxicity study and 12 cages for the histopathology study, with one male quail and two female quails in each cage) and fed with various doses of 4-NP in diet. The body weight in quails administered with 4-NP was significantly decreased (P < 0.05) in a time- and dose-dependent manner. The egg fertilization rate significantly decreased (P < 0.05) in all treated groups, which was 91.4%, 86.5%, 85.4%, and 86.2% in the control group, 10 mg·kg-1, 20 mg·kg-1, and 50 mg·kg-1 treatment groups, respectively. Moreover, the hatching rate was also significantly decreased (P < 0.05) in the 50 mg·kg-1 treatment group compared with the control group. Furthermore, the 14-day survival rate of young quails was significantly decreased (P < 0.05) in all treated groups, which was 98.0%, 91.1%, 89.8%, and 86.8% in the control group, 10 mg·kg-1, 20 mg·kg-1, and 50 mg·kg-1 treatment groups, respectively. Damaged spermatogenesis in male quails was found in all treated groups. In conclusion, oral administration of 4-NP impaired the gonads of male quails, leading to reproduction performance damage of Japanese quails.
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Affiliation(s)
- Yan Cheng
- School of Life Sciences, Nanjing University, Nanjing, 210023, China
- Nanjing Institute of Environmental Science, MEP, Nanjing, 210042, China
| | - Zhengjun Shan
- Nanjing Institute of Environmental Science, MEP, Nanjing, 210042, China
| | - Junying Zhou
- Nanjing Institute of Environmental Science, MEP, Nanjing, 210042, China
| | - Yuanqing Bu
- Nanjing Institute of Environmental Science, MEP, Nanjing, 210042, China
| | - Pengfu Li
- School of Life Sciences, Nanjing University, Nanjing, 210023, China.
| | - Shan Lu
- School of Life Sciences, Nanjing University, Nanjing, 210023, China.
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Jessl L, Scheider J, Oehlmann J. The domestic fowl (Gallus gallus domesticus) embryo as an alternative for mammalian experiments - Validation of a test method for the detection of endocrine disrupting chemicals. CHEMOSPHERE 2018; 196:502-513. [PMID: 29329082 DOI: 10.1016/j.chemosphere.2017.12.131] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 12/20/2017] [Accepted: 12/21/2017] [Indexed: 06/07/2023]
Abstract
In recent decades the embryo of Gallus g. domesticus has been widely used as a model for the study of early sexual development and the potential impact of substances affecting development, including endocrine disrupting chemicals (EDCs). Since there is no standardized procedure available for experiments with the chicken embryo, the objective of our project is to expedite the protocol to assess the potential effects of EDCs on early sexual differentiation. The main aim of the present study was to systematically investigate the natural variability of individual developmental and histological key parameters in untreated and solvent-treated control groups, since this has been insufficiently addressed so far. A further aim was to provide robust values for all parameters investigated in control and substance experiments, using two known estrogenic compounds, bisphenol A (75/150/300 μg/g egg) and 17α-ethinylestradiol (20 ng/g egg). On embryonic day 1 eggs were injected with the estrogenic compounds. On embryonic day 19 histological gonadal data as well as morphological parameters were noted. In baseline experiments with control groups the selected endpoints showed reproducible results with low variabilities. Furthermore, gonadal endpoints responded sensitively to the treatment with the two model EDCs. Thus, these endpoints are recommended for the assessment of suspected EDCs in which the values provided for all parameters can serve as validity criteria in future experiments. The embryo of G. domesticus has shown to be a suitable alternative to currently accepted mammalian bioassays for the impact assessment of EDCs on reproductive tissues.
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Affiliation(s)
- Luzie Jessl
- Goethe University Frankfurt am Main, Institute for Ecology, Evolution and Diversity, Department Aquatic Ecotoxicology, Max-von-Laue-Str. 13, 60438 Frankfurt am Main, Germany.
| | - Jessica Scheider
- Goethe University Frankfurt am Main, Institute for Ecology, Evolution and Diversity, Department Aquatic Ecotoxicology, Max-von-Laue-Str. 13, 60438 Frankfurt am Main, Germany.
| | - Jörg Oehlmann
- Goethe University Frankfurt am Main, Institute for Ecology, Evolution and Diversity, Department Aquatic Ecotoxicology, Max-von-Laue-Str. 13, 60438 Frankfurt am Main, Germany.
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Cheng Y, Shan Z, Zhou J, Bu Y, Li P, Lu S. Effects of 4-nonylphenol in drinking water on the reproductive capacity of Japanese quails (Coturnix japonica). CHEMOSPHERE 2017; 175:219-227. [PMID: 28222376 DOI: 10.1016/j.chemosphere.2017.02.041] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 02/06/2017] [Accepted: 02/06/2017] [Indexed: 06/06/2023]
Abstract
4-nonylphenol (4-NP), a major degradation product of Nonylphenol ethoxylates (NPEOs), is widespread in environment. In this study, the effects of long-term 4-NP exposure in drinking water on Japanese quails (Coturnix japonica) were investigated. A total of 45 quails were evenly divided into 15 groups and administrated with various doses (0.1 μg L-1, 1.0 μg L-1, 10 μg L-1 and 100 μg L-1, which reflected the environmental concentrations of 4-NP) of 4-NP in drinking water. The results showed that 4-NP in drinking water had no effect on quails' food intake, but significantly decreased the quails' body weights (P < 0.05) in a time- and dose-dependent manner. The egg fertilization rates were also significantly decreased (P < 0.05) in all treatment groups. Moreover, the hatchability was significantly reduced (P < 0.05) in 10 μg L-1 and 100 μg L-1 groups, and the 14 d survival rates of young quails were significantly decreased (P < 0.05) in 1.0 μg L-1, 10 μg L-1 and 100 μg L-1 groups. Damaged spermatogenesis in male quails was observed in all treatment groups. Therefore, administration of 4-NP in drinking water impaired the reproductive ability of Japanese quails, and led to pathological lesions in the male gonads.
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Affiliation(s)
- Yan Cheng
- School of Life Sciences, Nanjing University, Nanjing 210023, China; Nanjing Institute of Environmental Science, MEP, Nanjing 210042, China
| | - Zhengjun Shan
- Nanjing Institute of Environmental Science, MEP, Nanjing 210042, China
| | - Junying Zhou
- Nanjing Institute of Environmental Science, MEP, Nanjing 210042, China
| | - Yuanqing Bu
- Nanjing Institute of Environmental Science, MEP, Nanjing 210042, China
| | - Pengfu Li
- School of Life Sciences, Nanjing University, Nanjing 210023, China.
| | - Shan Lu
- School of Life Sciences, Nanjing University, Nanjing 210023, China.
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Liu Y, Wang YL, Chen MH, Zhang Z, Xu BH, Liu R, Xu L, He SW, Li FP, Qi ZQ, Wang HL. Methoxychlor exposure induces oxidative stress and affects mouse oocyte meiotic maturation. Mol Reprod Dev 2016; 83:768-779. [DOI: 10.1002/mrd.22683] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 07/14/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Yu Liu
- Organ Transplantation Institute, Medical College; Xiamen University; Xiamen City Fujian Province China
| | - Ya-Long Wang
- Organ Transplantation Institute, Medical College; Xiamen University; Xiamen City Fujian Province China
| | - Ming-Huang Chen
- Department of Gynaecology and Obstetrics, Zhongshan Hospital; Xiamen University; Xiamen City Fujian Province China
| | - Zhen Zhang
- Xiamen Institute for Food and Drug Quality Control; Xiamen City Fujian Province China
| | - Bai-Hui Xu
- Organ Transplantation Institute, Medical College; Xiamen University; Xiamen City Fujian Province China
| | - Rui Liu
- Department of Gynaecology and Obstetrics, Zhongshan Hospital; Xiamen University; Xiamen City Fujian Province China
| | - Lin Xu
- Organ Transplantation Institute, Medical College; Xiamen University; Xiamen City Fujian Province China
| | - Shu-Wen He
- Organ Transplantation Institute, Medical College; Xiamen University; Xiamen City Fujian Province China
| | - Fei-Ping Li
- Biological College; Southwest Forestry University; Kunming City Yunnan Province China
| | - Zhong-Quan Qi
- Organ Transplantation Institute, Medical College; Xiamen University; Xiamen City Fujian Province China
| | - Hai-Long Wang
- Organ Transplantation Institute, Medical College; Xiamen University; Xiamen City Fujian Province China
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Kawashima T, Ahmed WMS, Nagino K, Ubuka T, Tsutsui K. Avian Test Battery for the Evaluation of Developmental Abnormalities of Neuro- and Reproductive Systems. Front Neurosci 2016; 10:296. [PMID: 27445667 PMCID: PMC4927565 DOI: 10.3389/fnins.2016.00296] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Accepted: 06/13/2016] [Indexed: 01/16/2023] Open
Abstract
Most of the currently used toxicity assays for environmental chemicals use acute or chronic systemic or reproductive toxicity endpoints rather than neurobehavioral endpoints. In addition, the current standard approaches to assess reproductive toxicity are time-consuming. Therefore, with increasing numbers of chemicals being developed with potentially harmful neurobehavioral effects in higher vertebrates, including humans, more efficient means of assessing neuro- and reproductive toxicity are required. Here we discuss the use of a Galliformes-based avian test battery in which developmental toxicity is assessed by means of a combination of chemical exposure during early embryonic development using an embryo culture system followed by analyses after hatching of sociosexual behaviors such as aggression and mating and of visual memory via filial imprinting. This Galliformes-based avian test battery shows promise as a sophisticated means not only of assessing chemical toxicity in avian species but also of assessing the risks posed to higher vertebrates, including humans, which are markedly sensitive to nervous or neuroendocrine system dysfunction.
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Affiliation(s)
- Takaharu Kawashima
- Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental Studies Tsukuba, Japan
| | - Walaa M S Ahmed
- Center for Environmental Health Sciences, National Institute for Environmental StudiesTsukuba, Japan; Department of Clinical Pathology, Faculty of Veterinary Medicine, Beni-Suef UniversityBeni-Suef, Egypt
| | - Koki Nagino
- Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental StudiesTsukuba, Japan; Laboratory of Integrative Brain Sciences, Department of Biology and Center for Medical Life Science, Waseda UniversityTokyo, Japan
| | - Takayoshi Ubuka
- Laboratory of Integrative Brain Sciences, Department of Biology and Center for Medical Life Science, Waseda UniversityTokyo, Japan; Jeffrey Cheah School of Medicine and Health Sciences, Brain Research Institute Monash Sunway, Monash University MalaysiaBandar Sunway, Malaysia
| | - Kazuyoshi Tsutsui
- Laboratory of Integrative Brain Sciences, Department of Biology and Center for Medical Life Science, Waseda University Tokyo, Japan
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Ma M, Crump D, Farmahin R, Kennedy SW. Comparing the effects of tetrabromobisphenol-A, bisphenol A, and their potential replacement alternatives, TBBPA-bis(2,3-dibromopropyl ether) and bisphenol S, on cell viability and messenger ribonucleic acid expression in chicken embryonic hepatocytes. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2015; 34:391-401. [PMID: 25470364 DOI: 10.1002/etc.2814] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 11/03/2014] [Accepted: 11/17/2014] [Indexed: 06/04/2023]
Abstract
A market for alternative brominated flame retardants (BFRs) has emerged recently due to the phase out of persistent and inherently toxic BFRs. Several of these replacement compounds have been detected in environmental matrices, including wild birds. A chicken embryonic hepatocyte (CEH) assay was utilized to assess the effects of the BFR, tetrabromobisphenol-A (TBBPA), and its replacement alternative, tetrabromobisphenol A bis(2,3-dibromopropyl ether [TBBPA-DBPE]) on cell viability and messenger ribonucleic acid (mRNA) expression. Bisphenol A (BPA) and 1 of its replacement alternatives, bisphenol S (BPS), were also screened for effects. Both TBBPA and BPA decreased CEH viability with calculated median lethal concentration (LC50) values of 40.6 μM and 61.7 μM, respectively. However, the replacement alternatives, TBBPA-DBPE and BPS, did not affect cell viability (up to 300 μM). Effects on mRNA expression were determined using an Avian ToxChip polymerse chain reaction (PCR) array and a real-time (RT)-PCR assay for the estrogen-responsive genes, apolipoproteinII (ApoII) and vitellogenin (Vtg). A luciferase reporter gene assay was used to assess dioxin-like effects. Tetrabromobisphenol-A altered mRNA levels of 4 genes from multiple toxicity pathways and increased luciferase activity in the luciferase reporter gene assay, whereas its alternative, TBBPA-DBPE, only altered 1 gene on the array, Cyp1a4, and increased luciferase activity. At 300 μM, a concentration that decreased cell viability for TBBPA and BPA, the BPA replacement, BPS, altered the greatest number of transcripts, including both ApoII and Vtg. Bisphenol A exposure did not alter any genes on the array but did up-regulate Vtg at 10 μM. Characterization of the potential toxicological and molecular-level effects of these compounds will ideally be useful to chemical regulators tasked with assessing the risk of new and existing chemicals.
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Affiliation(s)
- Melissa Ma
- National Wildlife Research Centre, Environment Canada, Ottawa, Ontario, Canada
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Traversi I, Gioacchini G, Scorolli A, Mita DG, Carnevali O, Mandich A. Alkylphenolic contaminants in the diet: Sparus aurata juveniles hepatic response. Gen Comp Endocrinol 2014; 205:185-96. [PMID: 24975542 DOI: 10.1016/j.ygcen.2014.06.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 06/09/2014] [Accepted: 06/15/2014] [Indexed: 11/26/2022]
Abstract
A wide range of endocrine disrupter chemicals can mimic steroid hormones causing adverse health effects. Nonylphenol (NP) and t-octhylphenol (t-OP) are man-made alkylphenolic environmental contaminants possessing controversial endocrine disruption properties. This study has investigated the effects of NP and t-OP enriched diets on hepatic tissue and biotransformation activities in the liver. To this aim, sea bream juveniles were fed with commercial diet enriched with three different doses of NP (NP1: 5mg/kg bw, NP2: 50mg/kg bw and NP3: 100mg/kg bw) or t-OP (t-OP1: 5mg/kg bw, t-OP2: 50mg/kg bw and t-OP3: 100mg/kg bw) for 21 days. A significant increase of the hepatosomatic index was observed in NP1 and t-OP1. Alteration of liver morphology was observed in both NP and t-OP exposed juveniles although the most altered endpoints were observed in t-OP2 with 100% of tissue degeneration. Ethoxyresorufin-O-deethylase activity was significantly inhibited by NP and t-OP (p<0.05), while catalase activity was significantly induced, at both doses. A different pattern of protein expression of different isoforms of both vitellogenin and zona radiata protein was evidenced within the treatments. In addition, a significant increase in the abundance of the stress induced heat shock protein 70 gene in the liver of t-OP2 fish and a significant increase in the abundance of the estrogen induced cathepsin D gene in the liver of NP1 and t-OP2 fish, were observed. Finally, estradiol-17β (E2) and testosterone (T) plasma levels and E2/T showed significantly different patterns in NP and t-OP exposed against control fish.
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Affiliation(s)
- I Traversi
- Department of Earth, Environment and Life Sciences (DiSTAV), University of Genoa, Italy; Interuniversity Consortium INBB, Rome, Italy.
| | - G Gioacchini
- Department of Environment and Life Sciences, University of Marche, Ancona, Italy
| | - A Scorolli
- Department of Environment and Life Sciences, University of Marche, Ancona, Italy
| | - D G Mita
- Department of Earth, Environment and Life Sciences (DiSTAV), University of Genoa, Italy
| | - O Carnevali
- Department of Environment and Life Sciences, University of Marche, Ancona, Italy; Interuniversity Consortium INBB, Rome, Italy
| | - A Mandich
- Department of Earth, Environment and Life Sciences (DiSTAV), University of Genoa, Italy; Interuniversity Consortium INBB, Rome, Italy
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Dong RR, Yang SJ, Feng RJ, Fang LL, Sun YL, Zhang YG, Xie XJ, Wang DS. Complete feminization of catfish by feeding Limnodilus, an annelid worm collected in contaminated streams. ENVIRONMENTAL RESEARCH 2014; 133:371-379. [PMID: 24952460 DOI: 10.1016/j.envres.2014.05.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 05/10/2014] [Accepted: 05/16/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND Feminization of animals derived from areas polluted by endocrine disrupting chemicals (EDCs) has been observed in all classes of vertebrates. However, feminization of artificially reared offspring by feeding of specific living organisms has never been reported. METHODS Different food (including Limnodilus spp collected from the wild) and time treatment were applied to southern catfish. In addition, EDCs in Limnodilus spp., an annelid worm collected from wild contaminated small streams, was detected by LC-MS (Liquid chromatography-mass spectrometry). Serum estradiol-17β and vitellogenin (VTG) levels and gonadal Sf1, Dmrt1, Foxl2, Cyp19a1a expression levels in the catfish were measured through Estradiol/VTG EIA Kit and real-time PCR. RESULTS Here we report that feeding of Limnodilus spp. resulted in complete feminization of southern catfish, which has a 1:1 sex ratio in wild conditions. Furthermore, HPLC analysis showed that the extraction of Limnodilus spp. contained EDCs, including bisphenol A (BPA), diethylstilbestrol (DES), 4-tert-octylphenol (4-t-OP) and 4-nonylphenol (4-NP), which were further confirmed by LC-MS. Feeding southern catfish using commercial diets sprayed with EDCs cocktail also resulted in 100% female, whereas the control fish displayed approximate 1:1 sex ratio. Limnodilus spp. fed fish displayed similar serum estradiol-17β and VTG levels and gonadal Sf1, Dmrt1, Foxl2, Cyp19a1a expression levels to those of female control. CONCLUSION These results demonstrated that EDCs in Limnodilus spp. cause southern catfish feminization by affecting aromatase expression and endogenous estrogen level. This is the first report showing that feeding of any living organism resulted in complete feminization of a vertebrate.
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Affiliation(s)
- Ran-ran Dong
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China
| | - Shi-jie Yang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China; Department of Hematology, Xinqiao Hospital, The Third Military Medical University, Xinqiao Street, Chongqing, China
| | - Rui-juan Feng
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China
| | - Ling-ling Fang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China
| | - Yun-lv Sun
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China
| | - Yao-guang Zhang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China
| | - Xiao-jun Xie
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China
| | - De-shou Wang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing, China.
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Roig B, Cadiere A, Bressieux S, Biau S, Faure S, de Santa Barbara P. Environmental concentration of nonylphenol alters the development of urogenital and visceral organs in avian model. ENVIRONMENT INTERNATIONAL 2014; 62:78-85. [PMID: 24184662 DOI: 10.1016/j.envint.2013.10.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 09/19/2013] [Accepted: 10/10/2013] [Indexed: 06/02/2023]
Abstract
Nonylphenol (NP) is an endocrine disruptor with harmful effects including feminization and carcinogenesis on various organisms. This substance is a degradation product of nonylphenol ethoxylates (NPEO) that is used in several industrial and agricultural processes. In this paper, we examined the assessment of NP exposure on chick embryo development, using a concentration consistent with the environmental concentrations of NP. With this aim, NP (between 0.1 and 50 μg/egg) was injected into the yolk of egg through a small needle hole in the shell. We report the effect of NP on chick reproductive system development although the effect we observed is lower than those observed by exposition to other endocrine disruptors. However, histological analysis highlighted a decrease of intraluminal seminiferous surface area in 64.12% of case (P=0.0086) and an heterogeneous organization of the renal tubules when 10 μg/egg were injected. Moreover, an impairment of liver development with an abnormal bile spillage was observed when higher concentration of NP was injected (50 μg/egg).
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Affiliation(s)
- Benoit Roig
- EHESP Rennes, Sorbonne Paris Cité, Avenue du Professeur Léon Bernard - CS 74312, 35043 Rennes Cedex, France; INSERM, UMR IRSET Institut de recherche sur la santé l'environnement et le travail - 1085, LERES, Rennes, France; Université de Nîmes, Rue du docteur Georges Salan, 30000 Nîmes, France.
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Ottinger MA, Carro T, Bohannon M, Baltos L, Marcell AM, McKernan M, Dean KM, Lavoie E, Abdelnabi M. Assessing effects of environmental chemicals on neuroendocrine systems: potential mechanisms and functional outcomes. Gen Comp Endocrinol 2013; 190:194-202. [PMID: 23773971 DOI: 10.1016/j.ygcen.2013.06.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 05/11/2013] [Accepted: 06/06/2013] [Indexed: 10/26/2022]
Abstract
Environmental pollutants encompass a vast array of compounds. Most studies in birds have focused on toxicological effects, with little attention to non-lethal effects. Consequently, it has proven difficult to assess potential risk associated with exposure to endocrine disrupting chemicals (EDCs). Assessing potential adverse effects due to exposure is further complicated by the great variation that occurs across avian species. These include variations in reproductive strategies, life span, sexual differentiation, and migration. Differences in reproductive strategies, particularly in the developmental patterns and mechanisms for precocial and altricial chicks, predispose birds to wide variations in response to steroids and steroid-like EDCs. We have investigated the effects of EDCs in precocial birds including Japanese quail (Coturnix japonica) and mallard ducks (Anas platyrhynchos) as well as in wild altricial songbirds. Studies in Japanese quail characterized endogenous steroid hormone changes during development and have demonstrated that the developing embryo uses the yolk as a 'steroid hormone depot'. It appears that actual embryonic exposure is quantitatively lower than indicated by the treatment in egg injections and that the true amount of compound necessary for bioactivity may be quite low relative to the actual dosage delivered. Additionally, embryonic exposure to specific EDCs adversely affected sexual differentiation in quail, especially impacting male sexual behavior as well as neural systems, immune response, and thyroid hormones. Many of these studies considered single compounds; however, wild birds are exposed to complex mixtures and multiple compounds. We tested complex mixtures of polychlorinated biphenyls (PCBs) at concentrations that bracketed those found in eggs in contaminated regions. Results indicated that the predictive value of the toxic equivalency (TEQ), based on comparative activation of the aryl hydrocarbon receptor (AhR) relative to dioxin was not as accurate as expected. We discuss the potential of developing an endocrine disruption index (EDI) to bridge the inconsistencies observed between responses predicted by the TEQ and those observed in vivo following exposure to EDCs. Further, we will discuss how an EDI would complement the adverse outcome pathways analyses to consider the range of effects of endocrine disruptors in birds.
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Affiliation(s)
- Mary Ann Ottinger
- Department of Animal and Avian Sciences, University of Maryland, College Park, MD 20742, USA.
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