Investigating the changes in gene expression of liver tissue exposed to phenanthrene over 72hr
Ontology highlight
ABSTRACT:
ORGANISM(S): Pimephales promelas
PROVIDER: GSE44840 | GEO | 2013/08/27
SECONDARY ACCESSION(S): PRJNA192454
REPOSITORIES: GEO
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Project description:FHM were exposed to 29ng/L phenanthrene. Fish were euthanized and samples taken after 24, 48 and 72hr. There were 28 samples analyzed; control liver tissues at 24hr (n=4) 5) phen treated liver tissues at 24hr 5) control liver tissues at 48hr 5) phen treated liver tissues at 48hr 5)control liver tissues at 72hr 4)phen treated liver tissues at 72hrs. There was a total of 28 microarrays processed.
2013-08-27 | E-GEOD-44840 | biostudies-arrayexpress
Project description:In this study, female fathead minnows (FHM) were exposed to waterbourne phenanthrene (201.8 µg/L) or a solvent control for 7 weeks. Fish were tested for behavioral differences in a modified behavioral test prior to euthansia. Hypothalami were excised and stored for microarray analyses.
2016-08-25 | GSE85993 | GEO
Project description:In this study, female fathead minnows (FHM) were exposed to waterbourne phenanthrene (201.8 µg/L) or a solvent control for 7 weeks. Fish were tested for behavioral differences in a modified behavioral test prior to euthansia. Hypothalami were excised and stored for microarray analyses. Fish were exposed to one dose of phenanthrene. Female and male hypothalami were analyzed (n=8 per group, control vs. treatment); liver was also analyzed. N=7 control and 8 phenanthrene. In this study, a subchronic exposure to phenanthrene was investigated
2016-08-25 | E-GEOD-85993 | biostudies-arrayexpress
Project description:FHMs were exposed to three concentrations of phenanthrene (average measured 29, 287, 1006 ng/L) and fish were sampled after 48hr.
2013-08-27 | GSE44839 | GEO
Project description:FHMs were exposed to three concentrations of phenanthrene (average measured 29, 287, 1006 ng/L) and fish were sampled after 48hr. There were 20 samples analyzed 5) control liver tissues 5) 29 ng/L phenanthrene exposed liver tissues 5) 287 ng/L phenanthrene exposed liver tissues 5)1006 ng/L phenanthrene exposed liver tissues. There was a total of 20 microarrays processed. In this study, gene expression to a 'dose-response' was investigated after in vivo exposure of fish to phenanthrene.
2013-08-27 | E-GEOD-44839 | biostudies-arrayexpress
Project description:Polycyclic aromatic hydrocarbons are common pollutants in soil, have negative effects on soil ecosystems, and are potentially carcinogenic. The Springtail (Collembola) Folsomia candida is often used as an indicator species for soil toxicity. Here we report a toxicogenomic study that translates the ecological effects of the polycyclic aromatic hydrocarbon phenanthrene in soil to the early transcriptomic responses in Folsomia candida. Microarrays were used to examine two different exposure concentrations of phenanthrene, namely the EC10 (24.95 mg kg-1 soil) and EC50 (45.80 mg kg-1 soil) on reproduction of this springtail, which evoked 405 and 251 differentially expressed transcripts, respectively. Fifty transcripts were differential in response to either concentration. Many transcripts encoding xenobiotic detoxification and biotransformation enzymes (phases I, II, and III) were upregulated in response to either concentration. Furthermore, indications of general and oxidative stress were found in response to phenanthrene. Chitin metabolism appeared to be disrupted particularly at the low concentration, and protein translation appeared suppressed at the high concentration of phenanthrene; most likely in order to reallocate energy budgets for the detoxification process. Finally, an immune response was evoked especially in response to the high effect concentration, which was also described in a previous transcriptomic study using the same effect concentration (EC50) of cadmium. Our study provides new insights in the molecular mode of action of the important polluting class of polycyclic aromatic hydrocarbons in soil animals. Furthermore, we present a fast, sensitive, and specific soil toxicity test which enhances traditional tests and may help to improve current environmental risk assessments and monitoring of potentially polluted sites.
2009-05-21 | GSE14207 | GEO
Project description:Polycyclic aromatic hydrocarbons are common pollutants in soil, have negative effects on soil ecosystems, and are potentially carcinogenic. The Springtail (Collembola) Folsomia candida is often used as an indicator species for soil toxicity. Here we report a toxicogenomic study that translates the ecological effects of the polycyclic aromatic hydrocarbon phenanthrene in soil to the early transcriptomic responses in Folsomia candida. Microarrays were used to examine two different exposure concentrations of phenanthrene, namely the EC10 (24.95 mg kg-1 soil) and EC50 (45.80 mg kg-1 soil) on reproduction of this springtail, which evoked 405 and 251 differentially expressed transcripts, respectively. Fifty transcripts were differential in response to either concentration. Many transcripts encoding xenobiotic detoxification and biotransformation enzymes (phases I, II, and III) were upregulated in response to either concentration. Furthermore, indications of general and oxidative stress were found in response to phenanthrene. Chitin metabolism appeared to be disrupted particularly at the low concentration, and protein translation appeared suppressed at the high concentration of phenanthrene; most likely in order to reallocate energy budgets for the detoxification process. Finally, an immune response was evoked especially in response to the high effect concentration, which was also described in a previous transcriptomic study using the same effect concentration (EC50) of cadmium. Our study provides new insights in the molecular mode of action of the important polluting class of polycyclic aromatic hydrocarbons in soil animals. Furthermore, we present a fast, sensitive, and specific soil toxicity test which enhances traditional tests and may help to improve current environmental risk assessments and monitoring of potentially polluted sites. Folsomia candida was exposed to phenanthrene spiked soil or untreated (reference/control) soil for 2 days. Two different concentrations of phenanthrene were used, 24.95 and 45.80 mg/kg soil which represent the EC10 and EC50 on reproduction, respectively. For each concentration treatment 4 biological replicates were used, replicate samples consisted of total RNA extracted from ~30 animals exposed in the same jar to either reference or phenanthrene spiked soil. Phenanthrene treated samples were always hybridized to reference samples in an evenly distributed dye-swap manner, which resulted in total in 8 hybridizations of 16 samples.
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2010-06-15 | E-GEOD-22258 | biostudies-arrayexpress