4.2 Article

Using the nematode Caenorhabditis elegans as a model animal for assessing the toxicity induced by microcystin-LR

期刊

JOURNAL OF ENVIRONMENTAL SCIENCES
卷 21, 期 3, 页码 395-401

出版社

SCIENCE PRESS
DOI: 10.1016/S1001-0742(08)62282-2

关键词

microcystin-LR; toxicity assessment; brood size; stress response; Caenorhabditis elegans

资金

  1. National Natural Science Foundation of China [30771113, 30870810]
  2. Doctoral Program of Higher Education of China [20050286035]
  3. Jiangsu 333 Project Foundation [07056]
  4. Natural Science Foundation of Jiangsu Province [BK2006107, BK2008320]

向作者/读者索取更多资源

Among more than 75 variants of microcystin (MC), microcystin-LR (MC-LR) is one of the most common toxins. In this study,the feasibility of using Caenorhabditis elegans to evaluate MC-LR toxicity was studied. C. elegans was treated with MC-LR at different concentrations ranging from 0.1 to 80 mu g/L. The results showed that MC-LR could reduce lifespan, delay development, lengthen generation time, decrease brood size, suppress locomotion behavior, and decreases hsp-16-2-gfp expression. The endpoints of generation time, brood size, and percentage of the population expressing hsp-16-2-gfp were very sensitive to 1.0 mu g/L of MC-LR, and would be more useful for the evaluation of MC-LR toxicity. Furthermore, the tissue-specific hsp-16-2-gfp expressions were investigated in MC-LR-exposed animals, and the nervous system and intestine were primarily affected by MC-LR. Therefore, the generation time, brood size, and hsp-16-2-gfp expression in C. elegans can he explored to serve as valuable endpoints for evaluating the potential toxicity from MC-LR exposure.

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