Mouse gut metagenome
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1196631 | ENA |
REPOSITORIES: ENA
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Project description:Global liver gene expression in mouse treated with either chow diet or high-fat diet was compared. Results provide insight into mechanisms underlying effects of high-fat diet on gene expression in mouse liver. Male C57/BJ mice aged 6 weeks were randomly assigned to a high-fat diet or control chow diet. All mice were sacrificed under anesthesia 20 weeks after treatment and livers were harvested. 3-4 total RNA samples per group were analyzed and gene expression was compared between groups.
2016-06-25 | E-GEOD-83700 | biostudies-arrayexpress
Project description:Systemic acute inflammatory signals can cause profound anorexia by disrupting the physiological appetite regulation in the hypothalamic milieu. Conversely, obesity related chronic inflammation of the hypothalamus can disturb anorexigenic signals and promote abnormal body weight control. The aim of the present study was to compare the global hypothalamic endophenotype in C57/Bl6 mice exposed to a high-fat diet or with acute illness mediated by LPS. Ten-week old male C57/Bl6 mice (n=18) were randomly divided into four groups; the control 1 group (n =3) was fed a normal diet whereas the high-fat diet (HFD) group (n =6) was fed a high-fat diet for eight weeks. The control 2 group (n=3) received an intraperitoneal injection of saline whereas the LPS group (n=6) received an intraperitoneal injection of LPS. Mice were sacrificed 18-hr post-injection. Both control 2 and LPS groups were fed a normal diet for eight weeks before the injection. The hypothalamic regions were removed and analysed using a 2D LC-MS methodology. The proteomic analysis profiled 9,235 proteins (q<0.05) across all biological states, of which 522 proteins were found modulated in the HFD group and another 579 in the LPS group. The proteomic profiles demonstrated that the systemic acute inflammation linked with anorexia induced a negative feedback loop of appetite control in the hypothalamus, suggesting an effort to re-establish homeostasis. By contrast, the chronic inflammation associated with obesity initiated a “perpetual cycle” of positive feedback enhancement of appetite regulation further exacerbating positive energy balance.
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Project description:This experiment was designed to identify changes in gene expression in the brain (specifically the hipocampus) in relation to variable levels of voluntary exercise. Male C57Bl/6J mice were weaned onto a low fat diet (LF; Research Diets D12329, 11% kcal fat) and given continuous access to exercise wheels (30.3 x 20.6 x 26 cm; Mini Mitter®, Nalgene® Activity Wheel for Rodents) at ten weeks of age, for three days (n=96). Six mice had their wheels locked to act as sedentary controls (sed). Animals were considered to be high runners (HR) if they ran >= 5 km/night and low runners (LR) if they ran <= 2 km/night. Middle runners (MR) were chosen randomly from the population of animals falling between the high and low groups. This series is comprised of array results from three parallel experiments comparing HR versus sed, MR versus sed, and HR versus LR. Six hybridizations were performed for each of the three comparisons (3 forward-labeled, 3-reverse labeled) to account for dye-incorporation differences. One slide from the HR vs LR experiment was broken during processing, so only five are included from that group. Keywords = hippocampus Keywords = voluntary running Keywords = voluntary exercise Keywords = C57Bl/6J Keywords: parallel sample
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Project description:Pomegranate skin extract could prevent fatty liver due to high fat diet in adult male Sprague Dawley rat. There are 3 groups of rats, feeding chow diet, high fat diet and high fat diet combined with pomegrante skin extract. After 8 weeks feeding, high fat diet group developped fatty liver but the other two groups still have healthy liver. We used microarrays to detail the global programme of gene expression underlying the fatty liver development and preventive effect of pomegranate skin extract on fatty liver. There are 3 treatment groups and 6 replicates for each group. The 3 treatment groups are control group feeding chow diet, high fat group feeding high fat diet and PE group feeding high fat diet and pomegranate skin extract. Rat livers were collecteded for RNA extraction and hybridization on Affymetrix microarrays.
2016-02-01 | E-GEOD-66316 | biostudies-arrayexpress
Project description:Global gene expression in the 20-week remnant kidneys of uninephrectomized mice fed either a chow or a high fat diet was compared with kidney tissue from the corresponding sham groups. Results provide insight into mechanisms underlying effects of high-fat induced obesity on gene expression in mouse kidney. Male C57/BJ mice aged 6 weeks were randomly assigned to uninephrectomy (UNX) or sham procedures and fed with a high fat diet or control chow diet. All mice were sacrificed under anesthesia 20 weeks after surgery and kidneys were harvested. 3-4 total RNA samples per group were analyzed and gene expression was compared between groups.
2014-01-11 | E-GEOD-53996 | biostudies-arrayexpress
Project description:The prevalence of obesity has significantly increased worldwide. Therefore, this study aimed to evaluate the influence of obesity in the proteomic profile of periodontal ligament (PDL) tissues of rat first maxillary molars submitted to orthodontic tooth movement. The study was approved by the Ethical Committee on Animal Experimentation of the Sao Paulo State University, School of Dentistry at Araraquara, Brazil (protocol number 16/2015) and followed the Animal Research: Reporting of In Vivo Experiments guidelines. Therefore, for this study, we used ten male adult Holtzman rats (weight average – 300 g, approximately 8 weeks old). Animals were randomly assigned to one of the following experimental groups: 1 – M group: animals received a standard diet and 75 days after that, the first maxillary molar was randomly selected to be submitted to OTM for 15 days (n=5), and 2 – OM group: animals received a high-fat diet to induce obesity, and 75 days after that the first maxillary molar was randomly selected to be subjected to OTM for 15 days (n=5). All animals were kept under controlled temperature (22-25 °C), receiving water ad libitum with a 12-hour light/dark cycle. To induce obesity, animals of the OM group received a high-fat diet. In contrast to the standard diet (Labina/Purina, Ribeirão Preto, Brazil) administered to the M group. The high-fat diet contained around 3.82 kcal/g and was composed of 27.5 % of standard rat chow plus 25 % of peanuts, 25 % of milk chocolate, and 12.5 % sweet biscuits and contained 20 g of protein, 48 g of carbohydrate, 20 g of total fat, and 4 g of fiber per 100 g of diet. This feed was daily replaced and had started 75 days before baseline (M initiation). The procedure to induce OTM was by a closed coil nickel-titanium spring (Sentalloy, GAC Central Slip, New York, EUA) connected the maxillary first molar and central incisors with a steel wire (CrNi, 0.20 mm, 55.01.208; Morelli, Sorocaba, Brazi). Fifteen days after OTM, animals were euthanized by anesthetic overdose.
2022-06-09 | PXD033647 | Pride