Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA387032 | ENA |
REPOSITORIES: ENA
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Project description:Intake and absorption of cholesterol (the latter determined by double labeled cholesterol methodology) were nearly unchanged in mice fed the saturated fat diet, but the fecal excretion of neutral sterols (i.e. cholesterol and its microbial conversion products) was increased compared with control diet(+80%; p<0.01). The saturated fat diet did neither significantly affect biliary cholesterol secretion nor intestinal cholesterol absorption (49% vs. 65% in controls, double labeled water methodology, p>0.1). Thus, the increased fecal neutral sterol excretion was primarily due to increased net transintestinal cholesterol excretion (+89% versus control; p<0.05). Since a major fraction of TICE cholesterol absorption is normally reabsorbed (J Lipid Res 2019 Sep;60(9):1562-1572), the increased fecal cholesterol excretion could be due to more transintestinal excretion of cholesterol into the intestinal lumen and/or to its decreased reabsorption. The saturated fat diet increased jejunal expression of genes involved in cholesterol synthesis (Srebf2 and target genes), but did not affect whole body de novo cholesterol synthesis. Conclusion This proof-of-principle study shows that increasing the saturation of the dietary fat can stimulate fecal cholesterol excretion. Individual components of saturated fat diets are to be explored to address the responsible molecular mechanisms
2021-02-01 | GSE37097 | GEO
Project description:In this study we sought to determine how hepatocyte-specific PPARgamma expression regulates hepatic gene expression in normal (healthy) mice fed a LFCF diet, or mice that were fed a HFCF diet for 24 weeks to induce non-alcoholic steatohepatitis (NASH). Specifically, we used chow-fed adult (10 week-old) PPARgamma floxed male mice and injected them with AAV8-TBG-Cre to knockout PPARgamma in hepatocytes (KO). A subset of PPARgamma floxed mice were injected with AAV8-TBG-Null to generate controls (C). Two weeks after AAV injections, half of the mice in each group were fed a low fat, cholesterol and fructose (LFCF) diet, or a high fat, cholesterol and fructose (HFCF) diet for 24 weeks. Livers were collected at the end of the study to assess hepatic gene expression with RNA-seq (performed by Novogen, Inc.)
2021-01-15 | GSE162249 | GEO
Project description:To investigate the role of hepatic CYP2B in diet-induced nonalcoholic steatohepatitis (NASH), a Cyp2b triple knockout mouse lacking Cyp2b9, Cyp2b10, and Cyp2b13 was developed using CRISPER/Cas9. Wildtype (WT) and Cyp2b-null mice were fed a normal diet (ND) or a choline-deficient, L-amino acid-defined high-fat diet (CDAHFD), containing 0.1% methionine and 62% fat for 8 weeks. RNA was extracted from the livers of female and male mice from all treatment groups and used for RNA seqencing. RNAseq data demonstrated that a lack of Cyp2b was protective in female but more harmful in male mice. Hepatic gene expression revealed a higher number of phase I-III xenobiotic metabolism and inflammatory response genes were down-regulated in CDAHFD-fed WT female and Cyp2b-null male mice.
2019-12-31 | GSE137449 | GEO
Project description:<p>Cd248 has recently been associated with adipose tissue physiology, demonstrated by reduced weight gain in high fat diet-fed mice with genetic deletion of Cd248 relative to controls. Here we set out to determine the metabolic consequences of loss of Cd248. Strikingly, we find these to be sex specific; By subjecting Cd248-/- and Cd248+/+ mice to a high fat diet and indirect calorimetry study, we identified that only male Cd248-/- mice show reduced weight gain compared to littermate control wildtype mice. In addition, male (but not female) mice showed a lower respiratory exchange ratio on both chow and high fat diets, indicating a predisposition to metabolise lipid. Lipidomic studies on specific fat depots found reduced triglyceride and diglyceride deposition in male Cd248-/- mice, and this was supported by reduced expression of lipogenic and adipogenic genes. Finally, metabolomic analysis of isolated, differentiated preadipocytes found alterations in metabolic pathways associated with lipid deposition in cells isolated from male, but not female, Cd248-/- mice. Overall, our results highlight the importance of sex controls in animal studies and point to a role for Cd248 in sex- and depot-specific regulation of lipid metabolism.</p>
2023-01-05 | MTBLS6615 | MetaboLights
Project description:In this study we sought to determine if the knockout of hepatocyte PPARgamma expression alter transcriptomics of the livers of mice with diet-induced NASH, and if there was a hepatocyte-specific PPARgamma dependent regulation of gene expression in TZD treated mice. Specifically, adult PPARg floxed male mice were fed a high fat, cholesterol and fructose (HFCF) diet for 24 weeks. After this period of time, half of the mice were injected with AAV8-TBG-Cre to knockout PPARgamma in hepatocytes (KO mice). The other half of the mice were injected with AAV8-TBG-Null, and served as controls (C mice). A subset of PPARg floxed mice were fed a low fat, cholesterol and fructose (LFCF) diet, and they were injected with AAV8-TBG-Null to generate LFCF-controls. Two weeks after AAV8 injections, half of the HFCF-fed mice in each group (C and KO) were switched to a HFCF diet containing rosiglitazone maleate (TZD, 50mg/kg of diet) for eight additional weeks. Mice were kept in their respective diets for 8 additional weeks too. At the end of the study, the livers were collected to assess hepatic gene expression with RNA-seq (performed by Novogen, Inc.)
2021-01-15 | GSE162276 | GEO
Project description:Adult PPARg floxed male and female mice were fed a high fat diet (HFD) for 16 weeks to induce obesity. Half of these mice were then injected with AAV8-TBG-Cre to knockout PPARg in hepatocytes. The remaining half were injected with AAV8-TBG-Null to generate control mice. After two weeks, mice fed the HFD were either maintained on this diet or switched to a high fat, high cholestrol, high fructose (HFCF) diet for an additional 16 weeks. This study was designed to examine whether the loss of hepatocyte PPARg in mice with established obesity would alter the liver transcriptomics in a PPARg dependent manner when the mice are fed a HFD or a HFCF diet.
2023-01-11 | GSE200352 | GEO
Project description:Hepatocyte IKKβ deficiency worsens HCFD-induced NASH in male but not female mice. To help understand this gender difference, we performed microarray analysis for liver RNA samples to determine genes which are differentially regulated by IKKβ deficiency in male but not female mice as compared to Wildtype mice.
2017-05-18 | GSE99031 | GEO
Project description:To investigate the role of CYP2B in lipid metabolism, a Cyp2b triple knockout mouse lacking Cyp2b9, Cyp2b10, and Cyp2b13 was developed using CRISPER/Cas9. Wildtype (WT) and Cyp2b-null mice were fed a normal diet (ND) or a 60% high-fat diet (HFD) for 10 weeks. RNA was extracted from the livers of male and female mice from all treatment groups and used for RNA seqencing. RNAseq data demonstrated that hepatic gene expression in ND-fed Cyp2b-null male mice is similar to HFD-fed WT mice, indicating that Cyp2b-null male mice are reacting as if they are receiving a HFD even if they are not. Gene ontology and KEGG pathways show perturbations in lipid metabolism pathways, including PUFA metabolism, fatty acid elongation, and glycerophospholipid metabolism.
2019-04-01 | GSE120761 | GEO
Project description:Hepatocyte Nuclear Factor 4α (HNF4α), master regulator of hepatocyte differentiation, is regulated by two promoters (P1 and P2). P1-HNF4α but not P2-HNF4α is expressed in normal adult liver in fed conditions. Both P1- and P2-HNF4α are expressed in fetal liver. P2-HNF4α expression is increased in fasted conditions, high fat diet, alcoholic liver and liver cancer. To determine the target genes of the P1- and P2-HNF4α isoforms, we compared P2-HNF4α-expressing exon swap mice (a7HMZ) to wildtype (WT) male mice. Liver ChIP-seq samples were taken at 10:30 AM (ZT 3.5)
2023-05-10 | GSE231538 | GEO
Project description:The purpose of this experiment was to determine the expression traits in animals from F2 intercross of inbred strains C57BL/6J, C3H/HeJ. (N=309, 164 males and 145 females). Brain from 292 F2 female and male mice were generated by intercrossing F1 mice. Mice were fed chow diet containing 4% fat (Ralston-Purina Co., St. Louis, MO) until 8 weeks of age and then were placed on a high-fat "Western" diet containing 42% fat and 0.15%cholesterol (Teklad 88137, Harlan Teklad, Madison WI) for 12 weeks. At 20 weeks mice were sacrificed, after a 12-hour fast Brain tissues were dissected and flash frozen in LN2 and stored at -80°C.
2009-08-09 | E-GEOD-12798 | biostudies-arrayexpress