1
|
Uchida M, Addai-Arhin S, Ishibashi H, Hirano M, Fukushima S, Ishibashi Y, Tominaga N, Arizono K. Developmental toxicity and transcriptome analysis of equine estrogens in developing medaka (Oryzias latipes) using nanosecond pulsed electric field incorporation. Comp Biochem Physiol C Toxicol Pharmacol 2023; 266:109547. [PMID: 36621632 DOI: 10.1016/j.cbpc.2023.109547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 12/26/2022] [Accepted: 01/01/2023] [Indexed: 01/07/2023]
Abstract
Equine estrogens (EQs) are steroidal hormones isolated from the urine of pregnant mares and are used in the formulation of human medications. This study initially investigated the embryonic developmental toxicity of equilin (Eq) and equilenin (Eqn) in medaka (Oryzias latipes). Malformations were observed in embryos exposed to nominal concentrations of 1 and 10 mg/L of Eq and Eqn. Delayed hatching was observed at 1 mg/L of Eq. To further investigate the molecular mechanism of developmental toxicity caused by Eq and Eqn, transcriptome and bioinformatics analyses were performed. Among 2016 and 3855 total differentially expressed genes (DEGs), 1117 DEGs overlapped between Eq. (55.4 % of total DEGs) and Eq. (29.0 % of total DEGs). Gene ontology indicated effects in terms related to blood circulation and cell junctions. Pathway analyses using DEGs revealed that both Eq and Eqn treatments at 10 mg/L affected various KEGG (Kyoto Encyclopedia of Genes and Genomes) pathways, such as neuroactive ligand-receptor interaction, mitogen-activated protein kinase signaling, retinol metabolism, and cytokine-cytokine receptor interaction. These results suggest that the disruption of these KEGG pathways is involved in the developmental toxicity of EQs in medaka embryos.
Collapse
Affiliation(s)
- Masaya Uchida
- Department of Creative Engineering, National Institute of Technology, Ariake College, 150 Higashi-Hagio, Omuta, Fukuoka 836-8585, Japan
| | - Sylvester Addai-Arhin
- Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, 3-1-100 Higashi-ku, Tsukide, Kumamoto 862-8502, Japan; Pharmaceutical Science Department, Faculty of Health Sciences, Kumasi Technical University, Post Office Box 854, Kumasi, Ghana
| | - Hiroshi Ishibashi
- Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Masashi Hirano
- Department of Bioscience, School of Agriculture, Tokai University, 9-1-1 Toroku, Higashi-ku, Kumamoto, Kumamoto 862-8652, Japan
| | - Satoshi Fukushima
- Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, 3-1-100 Higashi-ku, Tsukide, Kumamoto 862-8502, Japan; Faculty of Pharmaceutical Sciences, Sanyo-Onoda City University, Univ. St. 1-1-1, Sanyo-Onoda, Yamaguchi 756-0884, Japan
| | - Yasuhiro Ishibashi
- Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, 3-1-100 Higashi-ku, Tsukide, Kumamoto 862-8502, Japan
| | - Nobuaki Tominaga
- Department of Creative Engineering, National Institute of Technology, Ariake College, 150 Higashi-Hagio, Omuta, Fukuoka 836-8585, Japan.
| | - Koji Arizono
- Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, 3-1-100 Higashi-ku, Tsukide, Kumamoto 862-8502, Japan; Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe, Chuo-ku, Kumamoto, Kumamoto 862-0973, Japan
| |
Collapse
|
2
|
Kubota A, Hirano M, Yoshinouchi Y, Chen X, Nakamura M, Wakayama Y, Lee JS, Nakata H, Iwata H, Kawai YK. In vivo and in silico assessments of estrogenic potencies of bisphenol A and its analogs in zebrafish (Danio rerio): Validity of in silico approaches to predict in vivo effects. Comp Biochem Physiol C Toxicol Pharmacol 2023; 269:109619. [PMID: 37003593 DOI: 10.1016/j.cbpc.2023.109619] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/24/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023]
Abstract
This study assessed the estrogen-like potencies of bisphenol A (BPA) and its analogs (BPs) using in vivo and in silico approaches in zebrafish. Zebrafish embryos were exposed to 16 BPs, most of which concentration-dependently induced cytochrome P450 19A1b (CYP19A1b) expression. BPs-induced CYP19A1b expression was suppressed by fulvestrant, a nonselective high affinity antagonist for estrogen receptor (Esr) subtypes. For BPs that concentration-dependently induced CYP19A1b expression, we estimated their 50 % effective concentration (EC50) and relative potencies (REPs) with respect to the potency of BPA for inducing CYP19A1b expression. BP C2, Bis-MP, and BPAF showed lower EC50 than BPA, BPE, and BPF, while BPZ and BPB showed moderate EC50. The REP order of the BPs was BP C2 (26) > Bis-MP (24) > BPAF (21) > BPZ (5.8) > BPB (2.7) > BPE (1.5) > BPF (0.63) > 2,4'-BPF (0.22), indicating that some BPs showed greater estrogenic potencies than BPA in our system. We also constructed in silico homology models of ligand binding domains for zebrafish Esr subtypes, including Esr1, Esr2a, and Esr2b. Molecular docking simulations of ligands with the Esr subtypes revealed the interaction energies of some BPs were lower than that of BPA. The interaction energies showed significant positive correlations with their EC50 values for inducing CYP19A1b expression in vivo. This study showed that some BPA analogs have greater estrogenic potencies than BPA and that in silico simulations of interactions between ligands and Esr subtypes may help predict in vivo estrogenic potencies of untested chemicals.
Collapse
Affiliation(s)
- Akira Kubota
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, 2-11 Inada-cho Nishi, Obihiro, Hokkaido 080-8555, Japan.
| | - Masashi Hirano
- Department of Food and Life Sciences, School of Agriculture, Tokai University, 9-1-1 Toroku, Higashi-ku, Kumamoto-city, Kumamoto 862-8652, Japan
| | - Yuka Yoshinouchi
- Center for Marine Environmental Studies, Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Xing Chen
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, 2-11 Inada-cho Nishi, Obihiro, Hokkaido 080-8555, Japan
| | - Michiko Nakamura
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, 2-11 Inada-cho Nishi, Obihiro, Hokkaido 080-8555, Japan
| | - Yumi Wakayama
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, 2-11 Inada-cho Nishi, Obihiro, Hokkaido 080-8555, Japan
| | - Jae Seung Lee
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, 2-11 Inada-cho Nishi, Obihiro, Hokkaido 080-8555, Japan
| | - Haruhiko Nakata
- Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Hisato Iwata
- Center for Marine Environmental Studies, Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Yusuke K Kawai
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, 2-11 Inada-cho Nishi, Obihiro, Hokkaido 080-8555, Japan
| |
Collapse
|
3
|
Abstract
Vegetable tannin is widely applied in various industries, in agriculture, and in water treatment as a natural polyphenolic compound; however, little data has been collected concerning the relationship between structure and eco-toxicity. Here, the toxicity of six commercial tannin and three model chemicals was assessed using Photobacterium phosphoreum. Two kinds of hydrolyzed tannin displayed higher bioluminescence inhibition than four kinds of condensed tannin, and the model chemical of hydrolyzed tannin also showed greater toxicity than those of condensed tannin, indicating the structure dependent eco-toxicity of vegetable tannin. The reactive toxicity mechanism was proposed, which was illustrated by molecular simulations based on the model chemicals and luciferase.
Collapse
|