Myxozoan infection in the Sea of Galilee
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ABSTRACT:
PROVIDER: PRJEB59255 | ENA |
REPOSITORIES: ENA
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Project description:Gilthead sea bream fed plant-protein based diets with either fish oil or vegetable oil as the most iportant source of dietary lipids were experimentally exposed to the intestinal parasite Enteromyxum leei by water effluent. A specific gilthead sea bream oligo-microarray was used to determine the intestine transcriptomic response.
2012-10-16 | GSE35633 | GEO
Project description:Gilthead sea bream fed plant-protein based diets with either fish oil or vegetable oil as the most iportant source of dietary lipids were experimentally exposed to the intestinal parasite Enteromyxum leei by water effluent. A specific gilthead sea bream oligo-microarray was used to determine the intestine transcriptomic response. 41 samples from six experimental groups (2 diets x 3 infective status) in a single-color hybridization
2012-10-16 | E-GEOD-35633 | biostudies-arrayexpress
Project description:Sea lice (e.g., Lepeophtheirus salmonis) are parasites causing costly disease outbreaks in salmon farming globally. Despite the currently available controlling practices, molecular insights into the parasite-induced host immune responses and host-pathogen interaction will provide the basis for improved and innovative treatment strategies. We investigated the early transcriptomic responses in the fins of Atlantic salmon parasitized with sea lice at the chalimus stage (8 days post-infection). Fin tissue collected from non-infected (PRE) control and at (ATT) and adjacent (ADJ) to chalimus-attachment sites from infected fish were used in profiling the global gene expression using a 44K microarray platform. Microarray analyses indicated that global transcriptomic changes resulted in 6,568 differentially expressed probes (DEPs, FDR < 5%) that include 1928 shared DEPs between ATT and ADJ compared to PRE. A direct comparison of ATT vs. ADJ revealed 90 DEPs, all of which were up-regulated in ATT.
2020-04-01 | GSE140756 | GEO
Project description:Background: Salmonid species have followed markedly divergent evolutionary trajectories in their interactions with sea lice. While sea lice parasitism poses significant economic, environmental, and animal welfare challenges for Atlantic salmon (Salmo salar) aquaculture, coho salmon (Oncorhynchus kisutch) exhibit near-complete resistance to sea lice, achieved through a potent epithelial hyperplasia response leading to rapid louse detachment. The molecular mechanisms underlying these divergent responses to sea lice are unknown. Results: We characterised the cellular and molecular responses of Atlantic salmon and coho salmon to sea lice using single-nuclei RNA sequencing. Juvenile fish were exposed to copepodid sea lice (Lepeophtheirus salmonis), and lice-attached pelvic fin and skin samples were collected 12h, 24h, 36h, 48h, and 60h after exposure, along with control samples. Comparative analysis of control and treatment samples revealed an immune and wound-healing response that was common to both species, but attenuated in Atlantic salmon, potentially reflecting greater sea louse immunomodulation. Our results revealed unique but complementary roles of three layers of keratinocytes in the epithelial hyperplasia response leading to rapid sea lice rejection in coho salmon. Our results suggest that basal keratinocytes direct the expansion and mobility of intermediate and, especially, superficial keratinocytes, which eventually encapsulate the parasite. Conclusions: Our results highlight the key role of keratinocytes in coho salmon’s sea lice resistance, and the diverged biological response of the two salmonid host species when interacting with this parasite. This study has identified key pathways and candidate genes that could be manipulated using various biotechnological solutions to improve Atlantic salmon sea lice resistance.
2024-06-24 | GSE269132 | GEO
Project description:Drosophila melanogaster sea, scheggia, is differentially expressed in 2 experiment(s);
| FBgn0037912 | ExpressionAtlas
Project description:Drosophila melanogaster sea, scheggia, is expressed in 3 baseline experiment(s);
| FBgn0037912 | ExpressionAtlas
Project description:To determine the effects on the intestine gene expression of pathogen exposure to Enteromyxum leei. One fish group was exposed to E. leei-contaminated effluent (recipient group = R) . R fish (n= 66, average weight = 134 g) were placed in two replicated 200L fibre-glass tanks which were set to receive exclusively the effluent water from another tank containing 24 infected (donors = D; average weight = 127.3 g; prevalence of infection = 54%) gilthead sea bream. The D to R fish ratio was 0.8. Other 66 naïve fish were allocated in two replicated tanks (control group = CTRL) under the same conditions, but without receiving contaminated effluent. Over the course of the study, day length followed natural changes and water was heated in order to keep temperature always above 18ºC, the range was 18-23 ºC. Water was 5 µm-filtered and UV irradiated, and salinity was 37.5‰. Water flow was 10L/min and oxygen content of outlet water remained higher than 85%saturation. All fish were fed daily a commercial dry pellet diet at about 1% of body weight. Disease signs and daily mortalities were recorded throughout the experiments. The parasitic status of dead fish was checked by microscopic examination of fresh intestinal scrapings. Fish were sampled after 113 days post exposure (p.e.). Feeding was stopped one day prior to the sampling to ensure that the digestive tract was empty. Head kidney and posterior intestine were rapidly excised, frozen in liquid nitrogen, and stored at -80 °C until RNA extraction and analysis. Keywords: Treated/Untreated, confinement, cortisol, stress response, time course, microarray
2010-03-25 | GSE19646 | GEO
Project description:IL10-/-DC pulsed for 6h with 0, SEA, LPS, or co-pulsed with SEA/LPS together to compare changes in LPS-induced gene expression mediated by SEA (Schistosome soluble egg antigen) Keywords: other
2004-05-14 | GSE1382 | GEO
Project description:We have further tested and validated a reproduction-enriched microarray designed specifically for European sea bass providing a reliable tool to study gene expression patterns in this fish species. Results obtained by using this platform helped to increase our knowledge in the gene cascade of sex differentiation and give evidence of the complexity of the molecular processes. We described the gene expression profile of genes and pathways required to differentiate bipotential tissue to either an ovary or testis providing a deep transcriptomic analysis in the developing gonads. Resulting data may help to improve sex control in fish culture particularly in the European sea bass
2019-12-01 | GSE115841 | GEO
Project description:Contamination of aquatic ecosystems with anthropogenic pollutants, including pharmaceutical drugs, is a major concern worldwide. Fish are particularly at risk of exposure to pollutants but their impacts on mineralized fish tissues, particularly the scales that form a barrier between the fish and the environment, are poorly understood. The proteome data here presented support the findings reported in the associated research article “Disruption of the sea bass (Dicentrarchus labrax) skin-scale by estradiol and fluoxetine, an emerging pollutant”. Juvenile sea basses were exposed by intraperitoneal injections to: a) the antidepressant fluoxetine (FLX), a widely prescribed psychotropic drug and an emerging pollutant; b) the natural estrogen 17β-estradiol (E2) and c) coconut oil alone (control). The scale proteome profiles of fish exposed to these compounds for 5 days were analysed by the quantitative label-free proteomics technology SWATH-MS (Sequential Windowed data-independent Acquisition of the Total High-resolution-Mass Spectra). LC-MS data from pooled protein extracts from the scales of all experimental groups were acquired using information-dependent acquisition (IDA), which allowed the identification of 1,254 proteins through searches against the sea bass genome database. 715 proteins were confidently quantified by SWATH acquisition, from which 213 proteins had modified levels (p<0.05) between E2- or FLX-exposed fish and control. The main biological processes and KEGG pathways affected by E2 or FLX treatments were identified using Cytoscape/ClueGO enrichment analyses.
2022-01-11 | PXD020983 | Pride