Project description:A gilthead sea bream (Sparus aurata) microarray platform was developed to identify brain gene expression profiles in response to environmental concentrations of human pharmaceuticals.
Project description:Euryhaline teleosts can live in a wide range of environmental salinities. Transcriptomic analysis in important osmoregulatory and non-osmoregulatory tissues (liver, gills and hypothalamus) by means of a specific oligo-microarray revealed new aspects related to the osmoregulatory processes mediated by different canonical pathways after hypo- or hyper-omotic challenges in gilthead sea bream (Sparus aurata) juveniles. Liver was the most responsive tissue to salinity changes. In addition, around 24 %, 8 % and 12 % of the total genes differentially expressed were affected and regulated in the same way (up- or down-regulated) by both hyper- and hypo-osmotic challenges in liver, gills and hypothalamus, respectively. In liver and gills, functional analysis of the differentially expressed genes established 2 major clusters of canonical pathways related to i) Energy Metabolism and ii) Oxidative Stress: Damage and Repair, whereas for hypothalamus only a main clusters linked to Oxidative Stress: Damage and Repair was identified. Further, this common cluster presents different sub-nodes in all analyzed tissues, with a clear dualism between liver and gills in those pathways involved in nitrogenous turnover, as well as between gills and hypothalamus in cell stress processes. In addition, several sub-nodes related to cell and tissue architecture was only found in hypothalamus. Moreover, only genes involved in xenobiotic metabolism signaling canonical pathway were differentially regulated by both hypo- and/or hyper-salinity transfer in the three tissues considered. Our results indicated that hepatic, branchial and hypothalamic transcriptome of the sea bream clearly responded after 7 days in different environmental salinities, when mainly metabolic and different cell functions are activated to reach homeostasis, or even return to their basal levels.
Project description:A gilthead sea bream (Sparus aurata) microarray platform was developed to identify brain gene expression profiles in response to environmental concentrations of human pharmaceuticals. Comparative analysis of gene expression profiles was conducted among brain of gilthead seabream exposed to Acetaminophen (APAP; analgesic), Carbamazepine (CBZ; anti-epileptic) and Atenolol (AT; β-blocker). All groups of samples were also compared with brain of control individuals.
Project description:Sparicotylosis is an endemic parasitic disease across the Mediterranean Sea caused by the polyopisthocotylean monogenean Sparycotyle chrysophrii, which affects the gills of gilthead sea bream (Sparus aurata). Current disease-management, mitigation and treatment strategies are scarce against sparicotylosis. In order to successfully develop more efficient therapeutic strategies against this disease, understanding which molecular mechanisms and metabolic pathways are altered in the host is critical. This study aims to elucidate how S. chrysophrii infection modulates giltheadd seea bream physiological status and to identify the main altered biological processes through plasma proteomics of the host.
Project description:Analysis of the gene expression profiles of Sparus aurata head kidney after infection with Photobaterium damselae piscicida. The expression levels of 21,497 sea bream transcripts, on both directions, 24 and 48 hours post-infection, were compared with the levels detected in uninfected individuals.
Project description:Deciphering the dietary immunomodulatory effects of a medicinal plant leaf extract (MPLE) obateined from sage (Salvia officinalis, Lamiaceae) and lemon verbena (Lippia citriodora, Verbenaceae) upon the gut-associated lymphoid tissue (GALT) of gilthead seabream (Sparus aurata).
