Rattus norvegicus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA126943 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Zucker Diabetic Fatty (ZDF) Rat Study - Diaphragm vs. Sternohyoid
2014-07-03 | E-GEOD-21791 | ExpressionAtlas
Project description:Zucker diabetic fatty (ZDF)/Zucker lean control (ZLC) comparisons
| PRJNA87181 | ENA
Project description:In this study we have analyzed gene expression and metabolite levels in the livers of male and female Zucker diabetic fatty (ZDF) rats. We speculated that the sex different development of diabetes in the ZDF animals presents the opportunity to relate gender to diabetes (since only males become diabetic on normal diet). In this model one can search for parameters that distinguish females fed normal diet compared to high fat diet (i.e. components that vary with the development of diabetes) and evaluate if such changes can be related to components that characterize male diabetic animals.. Biological replicates: 4 ZDF female rat livers from rats on a standard diet (SD) and 4 ZDF female rat livers from rats on high-fat diet (HFD) (6 weeks). One replicate per array. Hepatic gene expression, hepatic metabolites, sex-differences
2011-08-09 | E-GEOD-23808 | biostudies-arrayexpress
Project description:In this study we have analyzed gene expression and metabolite levels in the livers of male and female Zucker diabetic fatty (ZDF) rats. We speculated that the sex different development of diabetes in the ZDF animals presents the opportunity to relate gender to diabetes (since only males become diabetic on normal diet). In this model one can search for parameters that distinguish females fed normal diet compared to high fat diet (i.e. components that vary with the development of diabetes) and evaluate if such changes can be related to components that characterize male diabetic animals.. Biological replicates: 4 male ZDF rat livers from rats on a standard diet (SD) and 4 ZDF female rat livers from rats on a standard diet (SD). One replicate per array. Hepatic gene expression, hepatic metabolites, sex-differences
2011-08-09 | E-GEOD-23809 | biostudies-arrayexpress
Project description:Type 2 diabetes differs from type 1 diabetes in its pathogenesis. Type 1 diabetic diaphragm has altered gene expression which includes lipid and carbohydrate metabolism, ubiquitination and oxidoreductase activity. The objectives of the present study were to assess respiratory muscle gene expression changes in type 2 diabetes and to determine whether they are greater for the diaphragm than an upper airway muscle. Diaphragm and sternohyoid muscle from Zucker diabetic fatty (ZDF) rats were analyzed with Affymetrix gene expression arrays. The two muscles had 97 and 102 genes, respectively, with at least ±1.5-fold significantly changed expression with diabetes, and these were assigned to gene ontology groups based on over-representation analysis. Several significantly changed groups were common to both muscles, including lipid metabolism, carbohydrate metabolism, muscle contraction, ion transport and collagen, although the number of genes and the specific genes involved differed considerably for the two muscles. In both muscles there was a shift in metabolism gene expression from carbohydrate metabolism toward lipid metabolism, but the shift was greater and involved more genes in diabetic diaphragm than diabetic sternohyoid muscle. Groups present in only diaphragm were blood circulation and oxidoreductase activity. Groups present in only sternohyoid were immune & inflammation and response to stress & wounding, with complement genes being a prominent component. In conclusion, type 2 diabetes-induced gene expression changes in respiratory muscles has both similarities and differences relative to previous data on type 1 diabetes gene expression. Furthermore, the diabetic alterations in gene expression differ between diaphragm and sternohyoid. 18-week-old Zucker diabetic fatty rats: 6 normal and 5 diabetic diaphragms and sternohyoids.
2014-05-12 | E-GEOD-21791 | biostudies-arrayexpress
Project description:Gene expression profiles in tissues of Zucker diabetic fatty (ZDF) rats compared with age matched Zucker lean control (ZLC) rats. Keywords: other
2004-03-01 | GSE1080 | GEO
Project description:Population based studies have established that androgen deficiency in males correlates with type 2 diabetes, visceral adiposity, and metabolic syndrome. Androgen therapy has been investigated as a possible treatment regime to combat these disorders. However, the molecular mechanism of androgen effects on these diseases still remain poorly understood. The zucker diabetic fatty (ZDF) rat, containing a mutation in the leptin receptor, is a well-investigated model of obesity and type 2 diabetes. Male rats are characterized as androgen deficient and spontaneously develop obese, hyperlipidemia, hyperglycemia and hyperinsulinemia. In this study, we used ZDF male rats as a model of metabolic syndrome to investigate the effects of testosterone administration on the development of the metabolic conditions. Methods: Male ZDF rats at six week of age were randomly divided into two groups and administered testosterone undecanoate(TU) or vehicle alone every three days for three weeks. After three weeks, overnight fasted blood glucose and insulin concentrations were significantly higher and glucose tolerance and insulin sensitivity were impaired in TU treated ZDF rats compared to vehicle controls. Moreover, increased serum triglycerides and VLDL were observed in TU treated rats. To further explore the observed metabolic changes in TU treated ZDF rats, whole-genome microarray analysis were performed on isolated liver mRNA. Results: Array analysis revealed that many hepatic lipogenic genes were increased in male ZDF rat livers treated with TU. Interestingly, SREBP-1c, a key transcriptional activator of lipogenic genes and PGC-1 , an activator of SREBP-1c were induced while small heterodimer partner, a transcriptional inhibitor of lipogenic genes was suppressed by TU treatment. Exploring signaling pathways for these effects, we observed that the hepatic activated forms of STAT3 and AMPK, two known inhibitors of hepatic lipogenesis, were decreased in TU treated rat. Moreover, we observed that DHT could block the induction of STAT3 and AMPK phosphorylation in treated primary human hepatocytes. Preliminarily, in the leptin receptor positive zucker diabetic lean male rats, we observed that TU treatment has an oppose effect on the hepatic lipogenic genes, suggesting that hepatic leptin signaling may influence androgen signaling. Further insight into the relationship between androgen deficiency and the leptin system may help improve treatment of the metabolic syndrome. Population based studies have established that androgen deficiency in males correlates with type 2 diabetes, visceral adiposity, and metabolic syndrome. Androgen therapy has been investigated as a possible treatment regime to combat these disorders. However, the molecular mechanism of androgen effects on these diseases still remain poorly understood. The zucker diabetic fatty (ZDF) rat, containing a mutation in the leptin receptor, is a well-investigated model of obesity and type 2 diabetes. Male rats are characterized as androgen deficient and spontaneously develop obese, hyperlipidemia, hyperglycemia and hyperinsulinemia. In this study, we used ZDF male rats as a model of metabolic syndrome to investigate the effects of testosterone administration on the development of the metabolic conditions. Two-condition experiment. (1) lean ZDF rats (control) vs. lean ZDF rats (testosterone treated). (2) obese ZDF rats (control) vs. obese ZDF rats (testosterone treated). Biological replicates: 4 control replicates, 4 treated replicates.
2012-09-02 | E-GEOD-23941 | biostudies-arrayexpress
Project description:In this study we have analyzed gene expression and metabolite levels in the livers of male and female Zucker diabetic fatty (ZDF) rats. We speculated that the sex different development of diabetes in the ZDF animals presents the opportunity to relate gender to diabetes (since only males become diabetic on normal diet). In this model one can search for parameters that distinguish females fed normal diet compared to high fat diet (i.e. components that vary with the development of diabetes) and evaluate if such changes can be related to components that characterize male diabetic animals..
2011-08-10 | GSE23809 | GEO
Project description:In this study we have analyzed gene expression and metabolite levels in the livers of male and female Zucker diabetic fatty (ZDF) rats. We speculated that the sex different development of diabetes in the ZDF animals presents the opportunity to relate gender to diabetes (since only males become diabetic on normal diet). In this model one can search for parameters that distinguish females fed normal diet compared to high fat diet (i.e. components that vary with the development of diabetes) and evaluate if such changes can be related to components that characterize male diabetic animals..
2011-08-10 | GSE23808 | GEO