期刊论文

Effect of Lanthanum Exposure on the Antioxidase Activity and MDA Content in the Hepatopancreas of Gobiocypris rarus

中文

水生态学杂志

1674-3075

2019

40

2

108-113

10.15928/j.1674-3075.2019.02.016

湖北省教育厅重点项目(D20131705) 福建省特种水产配合饲料重点实验室开放课题(TMKJZ003).

本校为第一机构

以氯化镧(LaCl_3·7H_2O)为试验毒物,以稀有鮈鲫(Gobiocypris rarus)为试验材料,采用21 d慢性毒性试验(La~(3+)浓度分别为0.00、0.04、0.08、0.16、0.32、0.80 mg/L),通过检测稀有鮈鲫肝胰脏中超氧物歧化酶(SOD)、过氧化氢酶(CAT)活性和丙二醛(MDA)含量,研究了镧暴露胁迫对水生动物抗氧化系统的影响,以期从抗氧化生理响应的角度探讨稀土元素镧对水生动物的毒理机理。结果显示,与对照组相比,0.04~0.32 mg/L试验组肝胰脏SOD活性出现一定程度降低(P>0.05),但0.80 mg/L组SOD活性出现一定程度上升(P>0.05);0.04~ 0.32 mg/L试验组肝胰脏CAT活性较对照组出现一定程度降低(P>0.05),但0.80 mg/L组CAT活性...

The presence of rare earth elements(REE)in surface runoff and wastewater associated with the excavation and smelting of REE threatens aquatic ecosystems.Research on the effects of REE on aquatic organisms is lacking,particularly regarding the toxic effects and toxicological mechanisms.The rare minnow(Gobiocypris rarus)is recommended as a test organism,according to the guidelines for the testing of chemicals(Ministry of Environmental Protection of China).To explore the toxicological mechanism of REE in aquatic animals,we performed a chronic toxi...