Rattus norvegicus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA103255 | ENA |
REPOSITORIES: ENA
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Project description:This is a study to explore the transcriptional changes after cadmium treatment in adult rat testes at three time points (control--0 hour, 8 hour and 4 day). Cadmium is an environmental toxicant that is known to affect the male reproductive system. It disrupts the blood-testis barrier irreversibly, and affects the Sertoli-germ cells adhesion, causing germ cell depletion from the seminiferous epithelium. Experiment Overall Design: Adult Sprague-Dawley rats treated with a single dose of cadmium chloride at 3 mg/kg b.w. by i.p. and terminated after 8 hours (n=2) and 20 hours (n=2). Testes from cadmium-treated rats and untreated (control, 0 hour, n=3) rats were harvested and total RNA were prepared. Standard Affymetrix genechip procedures were followed for the subsequent experiments. Data were analysed in MAS 5.0 and GeneSpring 7.2.
2008-06-16 | E-GEOD-9480 | biostudies-arrayexpress
Project description:This is a study to explore the transcriptional changes after cadmium treatment in adult rat testes at three time points (control--0 hour, 8 hour and 4 day). Cadmium is an environmental toxicant that is known to affect the male reproductive system. It disrupts the blood-testis barrier irreversibly, and affects the Sertoli-germ cells adhesion, causing germ cell depletion from the seminiferous epithelium. Keywords: Cadmium effect in rat testes
2007-11-07 | GSE9480 | GEO
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2022-02-23 | PXD005499 | Pride
Project description:Cadmium is a natural element that can accumulate to toxic levels in the environment leading to detrimental effects in animals and humans including kidney, liver and lung injuries. Using a transcriptomics approach, genes and cellular pathways affected by a low dose of cadmium were investigated. Adult largemouth bass were intraperitoneally injected with 20 µg/kg of cadmium chloride and microarray analyses were conducted in the liver and testis 48 hours after injection. Transcriptomics profiles identified in response to cadmium treatment were tissue-specific with the most differential expression changes found in the liver tissues, which also contained much higher levels of cadmium than the testes. Acute exposure to a low dose of cadmium induced oxidative stress response and oxidative damage pathways in the liver. The mRNA levels of antioxidants such as catalase increased and numerous transcripts related to DNA damage and DNA repair were significantly altered. Hepatic mRNA levels of metallothionein, a proposed marker of cadmium exposure, showed a small insignificant increase after 48 hours exposure. Carbohydrate metabolic pathways were also disrupted in cadmium-exposed fish with hepatic transcripts such as UDP-glucose pyrophosphorylase 2 and sorbitol dehydrogenase highly induced. Both tissues exhibited a disruption of steroid signalling pathways. In the testis, estrogen receptor beta and transcripts linked to cholesterol metabolism were suppressed. On the contrary, genes involved in cholesterol metabolism were highly increased in the liver including genes encoding for the rate limiting steroidogenic acute regulatory protein and the catalytic enzyme 7-dehydrocholesterol reductase. Integration of the transcriptomics data using functional enrichment analyses revealed a number of enriched gene networks associated with previously reported adverse outcomes of cadmium exposure such as liver toxicity and impaired reproduction. Adult largemouth bass (n=4 per treatment) were ip injected with a single dose of cadmium chloride (20 ug/kg) or a saline solution. After 48 hours, liver and testis were excised and differential gene expression profiles were examined.
2014-04-02 | E-GEOD-53047 | biostudies-arrayexpress
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2008-01-10 | GSE10032 | GEO
Project description:This is a study to explore the transcriptional changes after Adjudin treatment in adult rat testes at three time points (control, 8 hour and 4 day). Adjudin, [1-(2,4-dichlorobenzyl)-1H-indazole-3-carbohydrazide], is a potential male contraceptive that targets the Sertoli-germ cell interface and causes germ cell depletion from the seminiferous epithelium. Adjudin has been proved to be a useful model to study the mechanisms that regulate junction restructuring in the testis. Experiment Overall Design: Sprague-Dawley rats treated with a single dose of Adjudin at 50 mg/kg b.w. by gavage and terminated after 8 hours (n=2) and 4 days (n=3). Testes from Adjudin-treated rats and untreated (control, n=3) rats were harvested and total RNA were prepared. Standard Affymetrix genechip procedures were followed for the subsequent experiments. Data were analysed in MAS 5.0 and GeneSpring 7.2.
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Project description:We tested the effects of isopropoyl dodecyl fluorophosphonate (IDFP) (10 mg/kg, i.p.), a pharmacological inhibitor of endocannabinoid degradation, on hepatic gene expression in mice. To determine if increased cannabinoid receptor 1 signaling is responsible for IDFP induced effects a subset of mice were pretreated with the cannabinoid receptor 1 antagonist (AM251) (10 mg/kg, i.p.).
2011-10-01 | GSE22949 | GEO
Project description:Using the GENIPOL flounder cDNA microarray, we assessed the temporal transcriptomic responses of Platichthys flesus to model toxicants over a 16 day timespan. Immature fish were treated by intraperitoneal injection with cadmium chloride (50 micrograms/kg in saline), 3-methylcholanthrene (25mg/kg in olive oil), Aroclor 1254 (50mg/kg in olive oil), tert-butyl-hydroperoxide (5mg/kg in saline), lindane (25 mg/kg in olive oil), perfluoro-octanoic acid (100mg/kg in olive oil), olive oil or saline (0.9%). Hepatic gene expression changes were determined 1,2,4,8 and 16 days post-injection in comparison with time-matched carrier controls.
2009-06-16 | E-MAXD-32 | biostudies-arrayexpress
Project description:rat testis time changes; Experimental details are found at Tash et al, Gamendazole, an orally active indazole carboxylic acid male contraceptive agent, targets HSP-90, eEF1A, and stimulates IL-1 transcription in Sertoli cells, Biol. Reprod. (2007) under review Experiment Overall Design: Adult male rats administered single ip dose of 6mg/kg Gamendazole or 25 mg/kg lonidamine or vehicle control (buffered DMSO) - testes harvested at 0 4 12 and 24 hr - 3 chips used for each time point
2008-04-10 | E-GEOD-8485 | biostudies-arrayexpress