RNA-seq reveals potential gene biomarkers in Pimephales promelas for exposure to treated wastewater effluent
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ABSTRACT:
ORGANISM(S): Pimephales promelas
PROVIDER: GSE180719 | GEO | 2022/08/31
REPOSITORIES: GEO
Similar Datasets
Project description:Municipal wastewater effluent can impact its receiving environment. In the St. Lawrence River, male fish living downstream from Montreal exhibit increased hepatic vitellogenin, intersex, delayed spermatogenesis and altered immune function. Few studies have examined genome-wide effects associated with municipal effluent exposure in fish to decipher the mechanisms of toxicity. The present objective was to identify hepatic cellular signaling pathways in fathead minnows following exposure to municipal wastewater effluent. Immature minnows were exposed for 21 days to either 0% (Control) or 20% municipal effluent, the highest concentration in the St. Lawrence River. Hepatic RNA was extracted and used to hybridize a fathead minnow oligonucleotide microarray containing approximately 15K gene sequences.
2014-08-31 | GSE52693 | GEO
Project description:Municipal wastewater effluent can impact its receiving environment. In the St. Lawrence River, male fish living downstream from Montreal exhibit increased hepatic vitellogenin, intersex, delayed spermatogenesis and altered immune function. Few studies have examined genome-wide effects associated with municipal effluent exposure in fish to decipher the mechanisms of toxicity. The present objective was to identify hepatic cellular signaling pathways in fathead minnows following exposure to municipal wastewater effluent. Immature minnows were exposed for 21 days to either 0% (Control) or 20% municipal effluent, the highest concentration in the St. Lawrence River. Hepatic RNA was extracted and used to hybridize a fathead minnow oligonucleotide microarray containing approximately 15K gene sequences. Sixteen samples were examined, 8 control samples and 8 exposed samples.
2014-08-31 | E-GEOD-52693 | biostudies-arrayexpress
Project description:We evaluated the possible mechanisms by which exposure to a sequentially treated pulp and paper mill effluent affects gene expression in the liver of male and female fathead minnows.
2012-12-31 | GSE25928 | GEO
Project description:Rivers containing effluents from water treatment plants are complex soups of compounds, ranging from pharmaceuticals to natural hormones. Male fathead minnows (Pimephales promelas) were exposed for 3 weeks to effluent waters from the Metropolitan Wastewater Treatment Plant in St. Paul, MN. Fish were tested for their competitive nest holding behavior. Changes in vitellogenin were measured and these were correlated to changes in gene expression using a 22,000 gene microarray developed specifically for fathead minnows. Significant changes in gene expression were observed in both liver and gonad, which correlate to phenotypic changes of vitellogenin induction and reduced competitive behavior. We also compared by real-time PCR the expression changes in key genes related to steroid biosynthesis and metabolism in fish exposed to the effluent as well as in fish exposed to a model estrogen and a model androgen. While the gene expression signature from effluent-exposed fish shared some elements with estrogen and androgen signatures, overall it was different, underscoring the complexity of compounds present in sewage and their different modes of action. Fathead minnow 22,000 gene arrays were designed by EcoArray (Alachua, FL) and were purchased from Agilent. Array hybridizations were performed using a reference design, where each sample was compared to a reference sample. The reference consisted of equal amounts of RNA from control female and male tissues (liver, brain and gonad) and was prepared as a standard for several experiments. Four replicates consisting of four different individuals were analyzed for each of the tissues, liver and gonad for both the control and the effluent-exposed fish. cDNA synthesis, cRNA labeling, amplification and hybridization were performed following the manufacturerM-bM-^@M-^Ys kits and protocols (Agilent Low RNA Input Fluorescent Linear Amplification Kit and Agilent 60-mer oligo microarray processing protocol; Agilent, Palo Alto, CA). Ovarian and liver samples from the fish were labeled with Cy5 while the reference sample was labeled with Cy3.
2010-10-29 | E-GEOD-23490 | biostudies-arrayexpress
Project description:We evaluated the possible mechanisms by which exposure to a sequentially treated pulp and paper mill effluent affects gene expression in the liver of male and female fathead minnows. Sexually mature fathead minnows were exposed to either river water, which served as our control (C), 10% untreated kraft effluent (UTK), 25% treated kraft effluent (TK) or 100% final effluent (CMO) from a multiprocess pulp and paper mill for 6 days. A total of 4 treatments. Each exposure aquarium consisted of a 42.1 L column that contained individual 5.3 L chambers. Each chamber contained a FHM breeding pair. A total of 3 biological replicates for male and female FHM per treatment were sent for microarray analysis resulting in a total of 24 arrays run as a reference design with a pooled sample of the 6 river water exposed fish serving as the reference sample..
2012-12-31 | E-GEOD-25928 | biostudies-arrayexpress
Project description:Linkage of behavioral and genomic impacts of a wastewater effluent on the fathead minnow
| PRJNA131027 | ENA
Project description:The federally endangered Okaloosa darter (Etheostoma okaloosae) is found almost exclusively on the Eglin Air Force Base in the Choctawhatchee Bay watershed of Florida. Portions of this limited habitat are threatened with erosion of soils, altered hydrology, and impaired water quality. One stream reach in particular, East Turkey Creek, has demonstrated potential water quality problems including poor invertebrate bioassessment scores (IBI), uncharacteristically high conductivity values, and low numbers of Okaloosa darters. General water quality (dissolved oxygen, specific conductance, pH, temperature, and relative turbidity and primary productivity) was characterized in both the potentially impacted East Turkey Creek and a reference stream (Long Creek). Water quality was assessed during a 30 day exposure using passive samplers for both non-polar and polar effluent parameters. Metal loading in the system was assessed via fish tissue burdens in resident Pteronotropis hypseleotris. Additionally, microarray analysis was performed on gonad and liver tissue from fathead minnows, Pimephales promelas, after 48-h exposures to water collected from the two creeks and brought into the laboratory. Gene expression changes were evident at the site below the influence of a wastewater spray field sited along East Turkey Creek, suggesting that anthropogenic compounds in the effluent waters may have affected both liver and testis function and could be related to account the general decrease in populations of the Okaloosa darter.
2010-08-11 | GSE23521 | GEO
Project description:Exposure of Feathead Minnows to Municipal Wastewater Effluent Inhibits the Canonical Wnt Signaling Pathway in the Liver
| PRJNA229819 | ENA
Project description:Metformin, along with its biotransformation product guanylurea, are commonly observed in municipal wastewaters and subsequent surface waters. Previous studies in fish have identified metformin as a potential endocrine active compound but there are inconsistencies in the literature with regard to effects. To further investigate the potential reproductive toxicity of metformin and guanylurea to fish, a series of experiments were performed with reproductively mature fathead minnows (Pimephales promelas). First, explants of mature fathead minnow ovary tissue were exposed to 0.001-100 µM metformin or guanylurea to investigate whether they can directly perturb steroidogenesis. Second, spawning pairs of fathead minnows were exposed to metformin (0.41, 4.1, 41 µg/L) or guanylurea (1.0, 10, 100 µg/L) for 23 d to assess impacts on reproduction. Lastly, male fathead minnows were exposed to 41 µg/L metformin, 100 µg/L guanylurea, or a mixture of both compounds, with samples collected over a 96 h time course to investigate potential impacts to the hepatic transcriptome or metabolome. Neither metformin or guanylurea effected estradiol or testosterone by ovary tissue exposed in vitro. In the 23 d exposure, neither compound significantly impacted transcription of endocrine-related genes in male liver or gonad, circulating steroid concentrations in male or female fish, or fecundity of spawning pairs. In the 96 h time course, 100 µg guanylurea/L elicited more differential gene expression than 41 µg metformin/L , and showed the greatest impacts after 96 h. A number of DEGs up-regulated after 24 h were subsequently down-regulated after 96 h, demonstrating time-dependent impacts of guanylurea on the liver. Overall, metformin and guanylurea did not elicit effects consistent with reproductive toxicity in adult fathead minnows at environmentally relevant concentrations. Where effects were identified using ‘omics approaches, guanylurea induced greater impacts than metformin.
2023-03-03 | GSE198081 | GEO
Project description:The federally endangered Okaloosa darter (Etheostoma okaloosae) is found almost exclusively on the Eglin Air Force Base in the Choctawhatchee Bay watershed of Florida. Portions of this limited habitat are threatened with erosion of soils, altered hydrology, and impaired water quality. One stream reach in particular, East Turkey Creek, has demonstrated potential water quality problems including poor invertebrate bioassessment scores (IBI), uncharacteristically high conductivity values, and low numbers of Okaloosa darters. General water quality (dissolved oxygen, specific conductance, pH, temperature, and relative turbidity and primary productivity) was characterized in both the potentially impacted East Turkey Creek and a reference stream (Long Creek). Water quality was assessed during a 30 day exposure using passive samplers for both non-polar and polar effluent parameters. Metal loading in the system was assessed via fish tissue burdens in resident Pteronotropis hypseleotris. Additionally, microarray analysis was performed on gonad and liver tissue from fathead minnows, Pimephales promelas, after 48-h exposures to water collected from the two creeks and brought into the laboratory. Gene expression changes were evident at the site below the influence of a wastewater spray field sited along East Turkey Creek, suggesting that anthropogenic compounds in the effluent waters may have affected both liver and testis function and could be related to account the general decrease in populations of the Okaloosa darter. Array hybridizations were performed using a single color design. Four biological replicates consisting of four different individuals were analyzed for each of the treatments (University of Florida control, and each of five sites). Site C was left out of subsequent analysis for publication, due to poor characterization of the site. Two Samples were left out of the normalization/analysis due to QC failure. Therefore, there are only 3 replicates of the "testis, site A water, exposed 48 h." and "liver, site E water, exposed 48 h." groups.
2010-08-11 | E-GEOD-23521 | biostudies-arrayexpress