Ontology highlight
ABSTRACT:
PROVIDER: PRJNA636968 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR11915259.fastq.gz | Fastqsanger.gz | |||
| SRR11915260.fastq.gz | Fastqsanger.gz | |||
| SRR11915261.fastq.gz | Fastqsanger.gz | |||
| SRR11915262.fastq.gz | Fastqsanger.gz | |||
| SRR11915263.fastq.gz | Fastqsanger.gz |
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Project description:gut microbiota of Fuzhuan brick tea-, filtered Fuzhuan brick tea- and Eurotium cristatum-treated high-fat diet induced obese mice
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Project description:Metabolic disorders, such as obesity and type 2 diabetes, are major public health concerns worldwide. Dietary interventions, such as tea consumption, have been suggested as an effective strategy to prevent and treat metabolic disorders. White adipose tissue, as the main energy storage organ in mammals, plays a critical role in the regulation of whole-body metabolism. Recent studies have shown that the microenvironmental cell composition and metabolic network of white adipose tissue can be modulated by dietary factors, including tea consumption. However, the underlying mechanisms and the effects of tea consumption on white adipose tissue in the context of high-fat diet-induced metabolic disorders are not fully understood. Therefore, this study aimed to investigate the effects of tea consumption on the microenvironmental cell composition and metabolic network of white adipose tissue in high-fat diet-fed mice.
2023-12-11 | GSE235473 | GEO
Project description:We studied the effect of dietary fat type, varying in polyunsaturated/saturated fatty acid ratio's (P/S) on development of metabolic syndrome. C57Bl/6J mice were fed purified high-fat diets (45E% fat) containing palm oil (HF-PO; P/S 0.4), olive oil (HF-OO; P/S 1.1) or safflower oil (HF-SO; P/S 7.8) for 8 weeks. A low-fat palm oil diet (LF-PO; 10E% fat) was used as a reference. Additionally, we analyzed diet-induced changes in gut microbiota composition and mucosal gene expression. The HF-PO diet induced a higher body weight gain and liver triglyceride content compared to the HF-OO, HF-SO or LF-PO diet. In the intestine, the HF-PO diet reduced microbial diversity and increased the Firmicutes/Bacteroidetes ratio. Although this fits a typical obesity profile, our data clearly indicate that an overflow of the HF-PO diet to the distal intestine, rather than obesity itself, is the main trigger for these gut microbiota changes. A HF-PO diet-induced elevation of lipid metabolism-related genes in the distal small intestine confirmed the overflow of palm oil to the distal intestine. Some of these lipid metabolism-related genes were previously already associated with the metabolic syndrome. In conclusion, our data indicate that saturated fat (HF-PO) has a more stimulatory effect on weight gain and hepatic lipid accumulation than unsaturated fat (HF-OO and HF-SO). The overflow of fat to the distal intestine on the HF-PO diet induced changes in gut microbiota composition and mucosal gene expression. We speculate that both are directly or indirectly contributive to the saturated fat-induced development of obesity and hepatic steatosis. Keywords: Diet intervention study Nine-week-old C57Bl/6J mice were fed a low-fat diet (LF-PO) and three different types of high-fat diet, based on palm oil (HF-PO; P/S1.0), olive oil (HF-OO; P/S4.6) and safflower oil (HF-SO; P/S10.1) for 8 weeks. Body weight was recorded weekly and after 7 weeks of diet intervention an oral glucose tolerance test was performed. After 2 weeks of diet intervention, 6 mice per high-fat diet group were anaesthetized with a mixture of isofluorane (1.5%), nitrous oxide (70%) and oxygen (30%) and the small intestines were excised. Adhering fat and pancreatic tissue were carefully removed. The small intestines were divided in three equal parts along the proximal to distal axis (SI 1, SI 2 and SI 3) and microarray analysis was performed on mucosal scrapings.
2012-06-17 | E-GEOD-18586 | biostudies-arrayexpress
Project description:Amaranth supplementation ameliorates high-fat diet-induced deterioration of gut microbiota structure in mice
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Project description:Germfree (GF) mice have been used as a model to study the contribution of the intestinal microbiota to metabolic energy balance of the host. Despite a wealth of knowledge accumulated since the 1940’s, the response of GF mice to a high fat diet is largely unknown. In the present study, we compared the metabolic consequences of a high fat (HF) diet on GF and conventional (Conv) C57BL/6J mice. As expected, Conv mice developed obesity and glucose intolerance with a HF diet. In contrast, GF mice remained lean and resisted the HF diet-induced insulin resistance. The anti-obesity phenotype of GF/HF mice was accompanied by reduced caloric intake, diminished food efficiency, and excessive fecal lipid excretion contributed to the reduced food efficiency. In addition, HF diet-induced hypercholesterolemia was ameliorated, which was partially due to an increase in fecal cholesterol excretion. However, hepatic cholesterols were increased in GF/HF mice. Elevated nuclear SREBP2 proteins and the up-regulation of cholesterol biosynthesis genes support the increased liver cholesterol biosynthesis in GF/HF mice. The resistance to HF diet-induced metabolic abnormalities in GF mice was also associated with a reduced immune response, indicated by low plasma pro-inflammatory and anti-inflammatory markers. These data suggest that the gut microbiota of Conv mice contributes to HF diet-induced obesity, insulin resistance, dyslipidemia and hepatic steatosis in mice. Thus, results of the present study describe the metabolic responses of GF mice to a HF diet and further our understandings of the relationship between the gut microbiota and the host. Germfree and conventional C57BL/6J mice were fed with a high fat diet for 11 weeks. Then, all mice were sacrified under 10-h food deprevation, and liver samples of germfree (n=14) and conventional (n=16) were examined.
2010-08-20 | E-GEOD-19038 | biostudies-arrayexpress
Project description:Acquisition of the intestinal microbiota begins at birth, and a stable microbial community develops from a succession of key organisms. Disruption of the microbiota during maturation by low-dose antibiotic exposure can alter host metabolism and adiposity. We now show that low-dose penicillin (LDP), delivered from birth, induces metabolic alterations and affects ileal expression of genes involved in immunity. LDP that is limited to early life transiently perturbs the microbiota, which is sufficient to induce sustained effects on body composition, indicating that microbiota interactions in infancy may be critical determinants of long-term host metabolic effects. In addition, LDP enhances the effect of high-fat diet induced obesity. The growth promotion phenotype is transferrable to germ-free hosts by LDP-selected microbiota, showing that the altered microbiota, not antibiotics per se, play a causal role. These studies characterize important variables in early-life microbe-host metabolic interaction and identify several taxa consistently linked with metabolic alterations. C57BL6J mice received low-dose penicillin through their drinking water (6.7 mg/L), control mice did not receive antibiotics. All mice were started on normal chow (13.5% fat kcal). At 17 weeks of age, half of the mice were switched to high fat diet (45% fat kcal). Livers were collected at age 30 weeks, RNA was extracted, and transcriptional differences were measured by microarray analysis.
2014-09-01 | E-GEOD-58086 | biostudies-arrayexpress
Project description:Cardiovascular (CV) disease is a leading cause of morbidity and mortality in Western societies. Even after accounting for traditional CV risk factors (e.g. obesity, smoking and hypertension), the inflammation-driven thickening and stiffening of central arteries is a strong predictor of adverse outcomes. Arterial wall changes are universally associated with advancing age and show unparalleled worsening in metabolic syndrome. In mice, resveratrol ameliorates a high-fat diet induced arterial wall inflammation and slows age-associated physiologic deteriorations within the arterial wall. Here we tested resveratrol in adult male rhesus monkeys, an experimental model relevant to humans. A diet rich in fat and sucrose (HFS) led to an increase in body weight as well as thickening and stiffening of the aortic wall, marked by diffuse inflammation, fibrosis and fat infiltration. Dietary resveratrol supplementation prevented diet-induced structural and functional alterations within the aortic wall, and abrogated the deleterious vascular endothelial and smooth muscle responses. Integrative genomic and proteomic analyses of aortic tissues revealed molecular signatures consistent with improved vascular functions. Thus, resveratrol conferred protection against the initiation of diet-induced inflammatory events that progress to pathological thickening and stiffening of large arteries. Dietary resveratrol may therefore hold promise as a novel therapy to ameliorate metabolic stress-induced CV disease. After baseline assessment, four male rhesus monkeys remained on the healthy standard diet (SD), 10 male rhesus monkeys were begun on a high fat/high sucrose (HFS) diet and 10 male rhesus monkeys were begun on a high fat/high sucrose (HFS) diet plus Resveratrol, 80mg/day. After one year of dietary intervention, the amount of resveratrol was increased to 240mg/day for one additional year. Tissues were then harvested for the array experiments.
2014-07-21 | E-GEOD-45927 | biostudies-arrayexpress