1
|
Yao X, Wang C, Li M, Jiao Y, Wang Q, Li X, Liu K, Liu G, Wang J, Zhu L, Wang J. Extreme environmental doses of diisobutyl phthalate exposure induce oxidative stress and DNA damage in earthworms (Eisenia fetida): Evidence at the biochemical and molecular levels. J Environ Manage 2023; 331:117321. [PMID: 36657203 DOI: 10.1016/j.jenvman.2023.117321] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/04/2023] [Accepted: 01/15/2023] [Indexed: 06/17/2023]
Abstract
Diisobutyl phthalate (DIBP), as a plasticizer, is widely used and has caused many extreme soil contamination scenarios, posing potential risks to soil fauna. However, the toxic effects and mechanisms of DIBP on soil fauna remain unclear. In this study, earthworms (Eisenia fetida) were used as model animals to explore the subchronic toxicity of extreme DIBP soil exposure (300, 600, and 1200 mg/kg) for 28 days. The results showed that the level of reactive oxygen species (ROS) and the contents of malondialdehyde (MDA) and 8-hydroxydeoxyguanosine (8-OHdG) in E. fetida were significantly increased during continuous DIBP exposure. In addition, the activities of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) were significantly inhibited while glutathione S-transferase (GST) activity was activated during continuous exposure. Integrated biological response (IBR) analysis showed that DIBP had positive dose-dependent toxicity and negative time-dependent toxicity to E. fetida, and SOD/CAT were selected as sensitive biomarkers. The molecular docking study found that DIBP could stably bind to SOD/CAT through hydrogen bonding, which further proved its sensitivity. This study provides primary data for ecological and environmental risk assessment of extreme dose DIBP soil pollution.
Collapse
Affiliation(s)
- Xiangfeng Yao
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China
| | - Can Wang
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China
| | - Min'an Li
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China
| | - Yuhuai Jiao
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China
| | - Qian Wang
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China
| | - Xianxu Li
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China
| | - Kexue Liu
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China
| | - Guanyong Liu
- BinZhou Polytechnic, Binzhou, Shandong, 256603, PR China
| | - Jinhua Wang
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China
| | - Lusheng Zhu
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China
| | - Jun Wang
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China.
| |
Collapse
|