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Key Laboratory of Marine Ecology and Environmental Science Institute of Oceanology Chinese Academy of Sciences
网络首发:2011-07-10,
纸质出版:2011
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Toxic effects of Karenia mikimotoi extracts on mammalian cells[J]. 海洋湖沼学报(英文), 2011,29(4):860-868.
Chen, Y., Yan, T., Yu, R. et al. Toxic effects of Karenia mikimotoi extracts on mammalian cells., Chin. J. Ocean. Limnol. 29, 860–868 (2011). https://doi.org/10.1007/s00343-011-0514-8
Toxic effects of Karenia mikimotoi extracts on mammalian cells[J]. 海洋湖沼学报(英文), 2011,29(4):860-868. DOI: 10.1007/s00343-011-0514-8.
Chen, Y., Yan, T., Yu, R. et al. Toxic effects of Karenia mikimotoi extracts on mammalian cells., Chin. J. Ocean. Limnol. 29, 860–868 (2011). https://doi.org/10.1007/s00343-011-0514-8 DOI:
Karenia is one of the most harmful and representative red tide genus in a temperate zone. Blooms caused by this genus have resulted in massive fish death in the South China Sea and the East China Sea. However
the potential effects of this dinoflagellate on human health through the transfer of toxins via marine food webs
and the mechanisms of toxicity
are still unknown. Therefore
we examined the toxic effects of a strain of K. mikimotoi (isolated from the South China Sea) on the proliferation and morphology of four mammalian cell lines (two normal cell lines and two cancer cell lines). In addition
we carried out a preliminary investigation on the mechanism of toxicity of the alga. The results show that the polar lipid-soluble component of K. mikimotoi significantly inhibited proliferation of the four cell lines
and resulted in the cells becoming spherical
swollen and damaged. The result of Annexin V and PI double-staining confirmed that cell membranes were disrupted. The malonaldehyde (MDA) contents in the medium of the four cell lines treated with the polar-lipid extracts all increased significantly
which indicates that the polar-lipid toxins produced by K. mikimotoi could adversely affect mammalian cells by inducing lipid peroxidation. We conclude that K. mikimotoi is a potential threat to human health
and the comprehensive effect of this dinoflagellate and its mechanisms should be investigated further.
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