Biotechnology Bulletin ›› 2021, Vol. 37 ›› Issue (4): 145-154.doi: 10.13560/j.cnki.biotech.bull.1985.2020-1060

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Antimony Accumulation and Its Effect on Antioxidation System in Different Tissues of Danio rerio

XU Kun1(), YANG Ai-jiang1,2,3(), HU Xia1,2,3, ZOU Hai-tao1, LI Bin1, LIU Ji1   

  1. 1. Resources and Environmental Engineering College,Guizhou University,Guiyang 550025
    2. Institute of Environmental Engineering Planning and Designing,Guizhou University,Guiyang 550025
    3. Guizhou Karst Environmental Ecosystems Observation and Research Station,Ministry of Education,Guiyang 550025
  • Received:2020-08-21 Online:2021-04-26 Published:2021-05-13
  • Contact: YANG Ai-jiang E-mail:764304931@qq.com;yangaij8818@sina.com

Abstract:

This study aimed to study the accumulation of antimony in zebrafish tissues and changes in various enzyme activities and contents under the stress of different concentration of antimony. Danio rerio were exposed to antimony solution(0,13.26,26.53,and 39.79 mg/L)for 14 d to determine the accumulation of antimony,the activity of superoxide dismutase(SOD),catalase(CAT),content of glutathione(GSH)and malondialdehyde(MDA)in each tissue. The results showed that the order of antimony accumulation in each tissue was as:Liver > Gill> Muscle > Brain and it gradually increased with the increase of antimony stress concentration. With the increased of antimony stress concentration,SOD activity in the liver,brain,gills and muscles presented different trends;CAT activity and GSH content both increased first and then decreased,which was as promotion at low concentration and inhibition at high concentration;MDA content tended gradually increasing. In conclusion,antimony can accumulate in different tissues of Danio rerio,activating antioxidant defense system and causing lipid peroxidation.

Key words: antimony, zebrafish, accumulation, antioxidant, lipid peroxidation