| Citation | Saul N, Sturzenbaum SR, Chakrabarti S, Baberschke N, Lieke T, Putschew A, Kochan C, Menzel R, Steinberg CE. Adsorbable organic bromine compounds (AOBr) in aquatic samples: a nematode-based toxicogenomic assessment of the exposure hazard. Environ Sci Pollut Res Int, 2015. |
| PubMed ID | 25994267 |
| Short Description | Adsorbable organic bromine compounds (AOBr) in aquatic samples: a nematode-based toxicogenomic assessment of the exposure hazard. GEO Record: N.A. Platform: N.A. Download gene-centric, log2 transformed data: WBPaper00046853.ce.mr.csv |
| # of Conditions | 15 |
Full Description
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Elevated levels of adsorbable organic bromine compounds (AOBr) have been detected in German lakes, and cyanobacteria like Microcystis, which are known for the synthesis of microcystins, are one of the main producers of natural organobromines. However, very little is known about how environmental realistic concentrations of organobromines impact invertebrates. Here, the nematode Caenorhabditis elegans was exposed to AOBr-containing surface water samples and to a Microcystis aeruginosa-enriched batch culture (MC-BA) and compared to single organobromines and microcystin-LR exposures. Stimulatory effects were observed in certain life trait variables, which were particularly pronounced in nematodes exposed to MC-BA. A whole genome DNA-microarray revealed that MC-BA led to the differential expression of more than 2000 genes, many of which are known to be involved in metabolic, neurologic, and morphologic processes. Moreover, the upregulation of cyp- and the downregulation of abu-genes suggested the presence of chronic stress. However, the nematodes were not marked by negative phenotypic responses. The observed difference in MC-BA and microcystin-LR (which impacted lifespan, growth, and reproduction) exposed nematodes was hypothesized to be likely due to other compounds within the batch culture. Most likely, the exposure to low concentrations of organobromines appears to buffer the effects of toxic substances, like microcystin-LR. Experimental Details: WBPaper00046853:Water(Control)_rep1 WBPaper00046853:Water(Control)_rep2 WBPaper00046853:Water(Control)_rep3 WBPaper00046853:Z-Medium(Control)_rep1 WBPaper00046853:Z-Medium(Control)_rep2 WBPaper00046853:Z-Medium(Control)_rep3 WBPaper00046853:Lake-Stobensee-sample-August_rep1 WBPaper00046853:Lake-Stobensee-sample-August_rep2 WBPaper00046853:Lake-Stobensee-sample-August_rep3 WBPaper00046853:Lake-Stobensee-sample-October_rep1 WBPaper00046853:Lake-Stobensee-sample-October_rep2 WBPaper00046853:Lake-Stobensee-sample-October_rep3 WBPaper00046853:M.aeruginosa-batch-culture_rep1 WBPaper00046853:M.aeruginosa-batch-culture_rep2 WBPaper00046853:M.aeruginosa-batch-culture_rep3. |
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