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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Liu, Ying Tam, Nora F. Y. Guan, Yuntao Yasojima, Makoto Zhou, Jin Gao, Baoyu |
| Description | Author Affiliation: Liu Y ( Research Center of Environmental Engineering and Management, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, People's Republic of China.) |
| Abstract | Acute toxic effects and mechanisms of two typical endocrine disrupting chemicals, nonylphenols (NPs) and bisphenol A (BPA), to the embryonic development of the abalone Haliotis diversicolor supertexta, were investigated by the two-stage embryo toxicity test. The 12-h median effective concentrations $(EC_{50})$ of NPs and BPA to the trochophore development were 1016.22 and $30.72 μg L^{−1},$ respectively, and the respective 96-h $EC_{50}$ values based on the completion of metamorphosis (another experimental endpoint) were reduced to 11.65 and $1.02 μg L^{−1}.$ Longer exposure time and magnified exposure concentrations in the benthic diatom, that serves as both food source and settlement substrate during the metamorphosis, via bioaccumulation, led to the higher sensitivity of metamorphosis to target EDCs compared with the trochophore development. The hazard concentrations for 5% of the species $(HC_{5})$ could be employed as the safety thresholds for the embryonic development of the abalone. The 12-h $HC_{5}$ values of NPs and BPA were 318.68 and $13.93 μg L^{−1},$ respectively, and the respective 96-h $HC_{5}$ values were 0.99 and $0.18 μg L^{−1},$ which were at environmentally relevant levels. Results of proteomic responses revealed that NPs and BPA altered various functional proteins in the abalone larvae with slight differences between each chemical and affected various physiological functions, such as energy and substance metabolism, cell signalling, formation of cytoskeleton and cilium, immune and stress responses at the same time, leading to the failure of metamorphosis. |
| File Format | HTM / HTML |
| ISSN | 09639292 |
| Issue Number | 6 |
| Volume Number | 20 |
| e-ISSN | 15733017 |
| Journal | Ecotoxicology |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2011-08-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Ecology Discipline Environmental Health Discipline Toxicology Embryo, Nonmammalian Drug Effects Gastropoda Embryology Phenols Toxicity Water Pollutants, Chemical Animals Benzhydryl Compounds Endocrine Disruptors Toxicity Tests, Acute Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Health, Toxicology and Mutagenesis Medicine Toxicology Management, Monitoring, Policy and Law |
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