Oxidative stress response in tilapia (GIFT, Oreochromis niloticus) liver after subacute exposure to subacute 1,3-dibromo-5,5-dimethylhydantoin (DBDMH)
文献类型： 外文期刊
作者： Zheng, Y. 1 ; Sun, B. 2 ; Zhao, Z. 2 ; Barry, K. 2 ; Xu, G. 1 ;
作者机构： 1.Chinese Acad Fishery Sci CAFS, Freshwater Fisheries Res Ctr FFRC, Key Lab Integrated Rice Fish Farming Ecol, Minist Agr & Rural Affairs, Wuxi 214081, Jiangsu, Peoples R China
2.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi 214081, Peoples R China
关键词： Disinfectant; Antioxidative defense; Tilapia; Residual; Biomarker
期刊名称：IRANIAN JOURNAL OF FISHERIES SCIENCES （ 影响因子：0.6； 五年影响因子：0.8 ）
ISSN： 1562-2916
年卷期： 2025 年 24 卷 3 期
页码：
收录情况： SCI
摘要： 1,3-dibromo-5,5-dimethylhydantoin (DBDMH) is a broad-spectrum and efficient disinfectant used in aquaculture. The present study aimed to know if the response of antioxidative defense system was reversible under different concentrations of DBDMH exposure. The fish were exposed to subacute concentrations of 0.06, 0.3, and 1.5 mg/L for 16 days and then transferred to DBDMHfree water for 10 days. Results showed that SOD/CAT (except 0.06), GPx (only 1.5), GR (only 0.3), T-GSH (only 1.5), and content GSH/GSSG ratio (0.06, 1.5) significantly increased at 1 day after exposure. SOD, CAT, GPx, GR, and T-GSH were decreased in all the groups at 2 days. The recovery results showed that SOD (0.3), GST (all groups), T-GSH contents (1.5), and GSH/GSSG ratios (1.5) were significantly increased, and it suggested the damage produced by 0.06 similar to 1.5 mg/L DBDMH were irreversible. The current study suggests such antioxidant responses could be used as the ecological biomarkers for monitoring residual DBDMH in aquatic environments of tilapia ponds, which also provides an early warning of DBDMH for wild fish because of the persistent existence in the contaminated water.
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