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Klopčič I, Markovič T, Mlinarič-Raščan I, Sollner Dolenc M. Endocrine disrupting activities and immunomodulatory effects in lymphoblastoid cell lines of diclofenac, 4-hydroxydiclofenac and paracetamol. Toxicol Lett 2018; 294:95-104. [DOI: 10.1016/j.toxlet.2018.05.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 05/11/2018] [Accepted: 05/15/2018] [Indexed: 12/27/2022]
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Basili D, Zhang JL, Herbert J, Kroll K, Denslow ND, Martyniuk CJ, Falciani F, Antczak P. In Silico Computational Transcriptomics Reveals Novel Endocrine Disruptors in Largemouth Bass ( Micropterus salmoides). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:7553-7565. [PMID: 29878769 DOI: 10.1021/acs.est.8b02805] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In recent years, decreases in fish populations have been attributed, in part, to the effect of environmental chemicals on ovarian development. To understand the underlying molecular events we developed a dynamic model of ovary development linking gene transcription to key physiological end points, such as gonadosomatic index (GSI), plasma levels of estradiol (E2) and vitellogenin (VTG), in largemouth bass ( Micropterus salmoides). We were able to identify specific clusters of genes, which are affected at different stages of ovarian development. A subnetwork was identified that closely linked gene expression and physiological end points and by interrogating the Comparative Toxicogenomic Database (CTD), quercetin and tretinoin (ATRA) were identified as two potential candidates that may perturb this system. Predictions were validated by investigation of reproductive associated transcripts using qPCR in ovary and in the liver of both male and female largemouth bass treated after a single injection of quercetin and tretinoin (10 and 100 μg/kg). Both compounds were found to significantly alter the expression of some of these genes. Our findings support the use of omics and online repositories for identification of novel, yet untested, compounds. This is the first study of a dynamic model that links gene expression patterns across stages of ovarian development.
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Affiliation(s)
- Danilo Basili
- Institute for Integrative Biology, University of Liverpool , L69 7ZB , Liverpool , United Kingdom
| | - Ji-Liang Zhang
- Henan Open Laboratory of Key Subjects of Environmental and Animal Products Safety, College of Animal Science and Technology , Henan University of Science and Technology , Henan 471003 , China
- Center for Environmental and Human Toxicology, Department of Physiological Sciences, College of Veterinary Medicine and UF Genetics Institute , University of Florida , Gainesville , Florida 32611 , United States
| | - John Herbert
- Institute for Integrative Biology, University of Liverpool , L69 7ZB , Liverpool , United Kingdom
| | - Kevin Kroll
- Center for Environmental and Human Toxicology, Department of Physiological Sciences, College of Veterinary Medicine and UF Genetics Institute , University of Florida , Gainesville , Florida 32611 , United States
| | - Nancy D Denslow
- Center for Environmental and Human Toxicology, Department of Physiological Sciences, College of Veterinary Medicine and UF Genetics Institute , University of Florida , Gainesville , Florida 32611 , United States
| | - Christopher J Martyniuk
- Center for Environmental and Human Toxicology, Department of Physiological Sciences, College of Veterinary Medicine and UF Genetics Institute , University of Florida , Gainesville , Florida 32611 , United States
| | - Francesco Falciani
- Institute for Integrative Biology, University of Liverpool , L69 7ZB , Liverpool , United Kingdom
| | - Philipp Antczak
- Institute for Integrative Biology, University of Liverpool , L69 7ZB , Liverpool , United Kingdom
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Huang SSY, Benskin JP, Veldhoen N, Chandramouli B, Butler H, Helbing CC, Cosgrove JR. A multi-omic approach to elucidate low-dose effects of xenobiotics in zebrafish (Danio rerio) larvae. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2017; 182:102-112. [PMID: 27886581 DOI: 10.1016/j.aquatox.2016.11.016] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 11/16/2016] [Accepted: 11/17/2016] [Indexed: 06/06/2023]
Abstract
Regulatory-approved toxicity assays such as the OECD Fish Embryo Toxicity Assay (TG236) allow correlation of chemical exposure to adverse morphological phenotypes. However, these assays are ineffective in assessing sub-lethal (i.e. low-dose) effects, or differentiating between similar phenotypes induced by different chemicals. Inclusion of multi-omic analyses in studies investigating xenobiotic action provides improved characterization of biological response, thereby enhancing prediction of toxicological outcomes in whole animals in the absence of morphological effects. In the current study, we assessed perturbations in both the metabolome and transcriptome of zebrafish (Danio rerio; ZF) larvae exposed from 96 to 120h post fertilization to environmental concentrations of acetaminophen (APAP), diphenhydramine (DH), carbamazepine (CBZ), and fluoxetine (FLX); common pharmaceuticals with known mechanisms of action. Multi-omic responses were evaluated independently and integrated to identify molecular interactions and biological relevance of the responses. Results indicated chemical- and dose-specific changes suggesting differences in the time scale of transcript abundance and metabolite production. Increased impact on the metabolome relative to the transcriptome in FLX-treated animals suggests a stronger post-translational effect of the treatment. In contrast, the transcriptome showed higher sensitivity to perturbation in DH-exposed animals. Integration of 'omic' responses using multivariate approaches provided additional insights not obtained by independent 'omic' analyses and demonstrated that the most distinct overall response profiles were induced following low-dose exposure for all 4 pharmaceuticals. Importantly, changes in transcript abundance corroborated with predictions from metabolomic enrichment analyses and the identified perturbed biological pathways aligned with known xenobiotic mechanisms of action. This work demonstrates that a multi-omic toxicological approach, coupled with a sensitive animal model such as ZF larvae, can help characterize the toxicological relevance of acute low-dose chemical exposures.
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Affiliation(s)
- Susie S Y Huang
- SGS AXYS, Sidney, BC, Canada; Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada.
| | - Jonathan P Benskin
- Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University, Stockholm, Sweden
| | - Nik Veldhoen
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada
| | | | | | - Caren C Helbing
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada
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Kiyama R, Wada-Kiyama Y. Estrogenic endocrine disruptors: Molecular mechanisms of action. ENVIRONMENT INTERNATIONAL 2015; 83:11-40. [PMID: 26073844 DOI: 10.1016/j.envint.2015.05.012] [Citation(s) in RCA: 178] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 05/26/2015] [Accepted: 05/27/2015] [Indexed: 05/20/2023]
Abstract
A comprehensive summary of more than 450 estrogenic chemicals including estrogenic endocrine disruptors is provided here to understand the complex and profound impact of estrogen action. First, estrogenic chemicals are categorized by structure as well as their applications, usage and effects. Second, estrogenic signaling is examined by the molecular mechanism based on the receptors, signaling pathways, crosstalk/bypassing and autocrine/paracrine/homeostatic networks involved in the signaling. Third, evaluation of estrogen action is discussed by focusing on the technologies and protocols of the assays for assessing estrogenicity. Understanding the molecular mechanisms of estrogen action is important to assess the action of endocrine disruptors and will be used for risk management based on pathway-based toxicity testing.
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Affiliation(s)
- Ryoiti Kiyama
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan.
| | - Yuko Wada-Kiyama
- Department of Physiology, Nippon Medical School, Bunkyo-ku, Tokyo 113-8602, Japan
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Karatas F, Cansiz A, Kara H, Karatepe M, Koparir M. [Synthesis of two new acetanilide derivatives and their effect on the serum antioxidant vitamins (A, E, and C) and the MDA level in rats]. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2005; 31:553-6. [PMID: 16245699 DOI: 10.1007/s11171-005-0068-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Acetanilide derivatives, 2,2'-thiobis[N-(4-nitrophenyl)acetamide] and 2,2'-thiobis[N-(4-chlorophenyl)acetamide], were synthesized and characterized. They were shown to cause a considerable oxidative stress in rats.
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Schwartz-Mittelman A, Baruch A, Neufeld T, Buchner V, Rishpon J. Electrochemical detection of xenoestrogenic and antiestrogenic compounds using a yeast two-hybrid-17-β-estradiol system. Bioelectrochemistry 2005; 65:149-56. [PMID: 15713566 DOI: 10.1016/j.bioelechem.2004.08.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2004] [Revised: 07/20/2004] [Accepted: 08/05/2004] [Indexed: 10/26/2022]
Abstract
The goal of this study was to determine the effects of various compounds on the 17-beta-estradiol-induced dimerization of the human estrogen receptor alpha (hERalpha), a nuclear transcription factor. For this purpose, we used a modified yeast two-hybrid (YTH) bioassay designed to study protein-protein interactions, based on the electrochemical monitoring of hERalpha dimerization and detected as beta-D-galactosidase reporter gene activity in a synthetic substrate p-aminophenyl-beta-D-galactopyranoside (pAPG). Compared with 17-beta-estradiol activity, genistein, bisphenol-A (BPA), and naringenin induced dimerization to a lower extent by four, five and six magnitudes of orders of magnitude, respectively. In the presence of physiological concentrations of 17-beta-estradiol, both tamoxifen and the analgesic drug acetaminophen inhibited hER dimerization in an antiestrogenic manner.
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Affiliation(s)
- Adrian Schwartz-Mittelman
- Department of Molecular Microbiology and Biotechnology, Tel-Aviv University, Ramat-Aviv 69978, Israel
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