Response characteristics of oxidative stress biomarkers of Polymesoda erosa to exposure of SCCPs
XING Yong-ze1,2,3, NONG Ying4, LU Yu-zhe4, YANG Ming-liu1, YAN Bing1
1. Guangxi Key Laboratory of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai 536007, China;
2. Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao 266100, China;
3. College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China;
4. College of Animal Science and Technology, Guangxi University, Nanning 530005, China
This study aimed to investigate the response characteristics of 4 oxidative stress biomarkers, the activities of superoxide dismutase (SOD), catalase (CAT), glutathione-S-transferase (GST) and the level of malondialdehyde (MDA) in blood and gill tissue of the Polymesoda erosa, under the condition of exposure to short-chain chlorinated paraffins (SCCPs) at different concentrations or with different exposure times. The results showed that SOD and GST activities in the blood and gill tissue increased along with the increase of exposure time under low stress (0.5mg/L, 1mg/L) or medium stress (5mg/L) of SCCPs. However, under high stress (10mg/L, 20mg/L), the activities of SOD and GST were high at the beginning of SCCPs exposure and then decreased gradually. CAT exhibited the highest activity at the initial stage (1d) of SCCPs exposure, and then its activity decreased gradually and finally was completely inhibited. In low stress group, the level of MDA appeared an up-down-up trend, however, in medium and high stress groups, the level of MDA increased continuously with the increase of exposure time. Taken together, the antioxidant system of the Polymesoda erosa could efficiently response to SCCPs when the concentration of SCCPs was lower than 5mg/L. However, when the concentration of SCCPs was higher than 5mg/L, after an initial emergency response, the antioxidant system was destroyed with the extending of exposure time. In addition, this study also explored the feasibility of using Polymesoda erosa as a bio-indicator for environment monitoring.
邢永泽, 农莹, 陆宇哲, 杨明柳, 阎冰. 红树蚬体内氧化逆境标志物对SCCPs暴露的响应[J]. 中国环境科学, 2017, 37(10): 3962-3971.
XING Yong-ze, NONG Ying, LU Yu-zhe, YANG Ming-liu, YAN Bing. Response characteristics of oxidative stress biomarkers of Polymesoda erosa to exposure of SCCPs. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(10): 3962-3971.
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