Project description:Circadian and metabolic processes are codependent. This experiment was designed to understand how a high fat diet affects circadian gene expression in the liver. Circadian gene expression in the liver is necessary for energy balance. Animals consuming normal chow or high fat diet (60% kcal from fat) for ten weeks were analyzed for circadian gene expression. Livers were harvested from animals every four hours throughout the circadian cycle.
Project description:Data-independent acquisition of mouse liver with four treatments: normal chow diet and healthy (1-5), normal chow diet and inoculated with Salmonella (6-11), high fat diet and healthy (12-16), and high fat diet and inoculated with Salmonella (17-21).
Project description:The aim of this study was to assess whether chronic treatment with RPV can modulate the progression of chronic liver disease, especially of non-alcoholic fatty liver disease (NAFLD), through a nutritional model in wild-type mice Mice were daily treated with RPV (p.o.) and fed with normal or high fat diet during 3 months to induce fatty liver disease
Project description:We propose comparing liver gene expression of WT and female ERKO mice early in the high-fat feeding period to animals fed a regular chow diet. Analyzing liver tissue before the fatty liver disease phenotype becomes severe will allow identification of target genes which may be causal. Comparison of regular chow fed WT animals to high fat fed WT animals will allow for identification of hepatic genes up-regulated in response to high fat feeding. Comparison of regular chow fed WT animals to regular chow fed ERKO animals will help clarify hepatic gene expression patterns that may be implicated in increased susceptibility to weight gain and glucose intolerance. Comparison of high fat fed WT animals to high fat fed ERKO animals will provide insight into genes that could be implicated in leading to increased fat accumulation in the liver over time during high fat feeding. Finally, comparison of regular chow fed ERKO animals to high fat fed ERKO animals will help identify genes that may be contributing to increased liver fat accumulation in response to high fat feeding in these animals.
Project description:The popularity of high fat foods in modern society has been associated with epidemic of various metabolic diseases characterized by insulin resistance, the pathology of which involves complex interactions between multiple tissues such as liver, skeletal muscle and white adipose tissue (WAT). To uncover the mechanism by which excessive fat impairs insulin sensitivity, we conducted a multi- tissue study by using TMT-based quantitative proteomics. 3-week-old ICR mice were fed with high fat diet (HFD) for 19 weeks to induce insulin resistance. Liver, skeletal muscle and epididymal fat were collected for proteomics screening. Additionally, PRM was used for validating adipose differential proteins. By comparing tissue-specific protein profiles of HFD mice, multi-tissue regulation of glucose and lipid homeostasis and corresponding underlying mechanisms was systematically investigated and characterized. NC: normal birth weight + chow diet; NH: normal birth weight + high fat diet; LC: low birth weight + chow diet; LH: low birth weight + high fat diet.
Project description:We compared the transcriptome of Suprachiasmatic Nucleus in C57BL/6J mice fed a high-fat diet or normal chow through an entire circadian cycle: 6 time points (TP) every four hours.
Project description:determine the effect of the high-fat diet on the proteomics profile of liver tissue.Mice were fed with HFD for 16 weeks to establish a NAFLD mouse model. Mice fed with normal chow diet were taken as controls. Five replicate liver samples were collected from each group for proteomics analysis.
Project description:Analysis of liver gene transcription during feeding of a ketogenic diet. Ketogenic diets may alter physiologic and metabolic profiles in a direction that favors weight loss. C57BL/6J mice were maintained for six weeks on either chow or ketogenic diet. Mice eating KD had lower weights, 90% reduction in insulin levels and increased energy expenditure compared to animals fed chow. Despite consumpiton of a very high fat diet serum lipids remained normal. Here we show that consumption of KD shifted liver metabolism to drastically increased fatty acid oxidation. Concurrently, expression of genes involved in fatty acid synthesis were markedly suppressed. Keywords: Hepatic profile
Project description:The present study aimed to examine the effect of high-fat diet prior to pregnancy on the liver of mouse offspring. Female C57BL/6J mice were fed a normal chow (15.2% fat by energy) (CTR and CTR-PP groups) or a high-fat chow (31.2% fat by energy) (HFD and HFD-PP groups) for 3−4 weeks and then mated with male C57BL/6J mice fed normal chow. Some mothers continued on the same diet until pups reached 21 days of age (CTR and HFD), and others were fed the different chows from gestational day 0 (CTR-PP and HFD-PP) to determine the effects of a high-fat diet during the pre-pregnancy period in HFD-PP/CTR and HFD/CTR-PP comparisons.
Project description:Analysis of liver gene transcription during feeding of a ketogenic diet. Ketogenic diets may alter physiologic and metabolic profiles in a direction that favors weight loss. C57BL/6J mice were maintained for six weeks on either chow or ketogenic diet. Mice eating KD had lower weights, 90% reduction in insulin levels and increased energy expenditure compared to animals fed chow. Despite consumption of a very high fat diet serum lipids remained normal. Here we show that consumption of KD shifted liver metabolism to drastically increased fatty acid oxidation. Concurrently, expression of genes involved in fatty acid synthesis were markedly suppressed. Reference: A high fat, ketogenic diet induces a unique metabolic state in mice. Kennedy AR, Pissios P, Out H, Xue B, Asakura K, Furukawa N, Marino FE, Liu FF, Kahn BB, Liberman TA, Maratos-Flier E. in press, 2007, Am J Physiol Metab 292. Experiment Overall Design: Eight week old C57BL/6 mice were fed either chow (Labdiet 5008, Pharmserv) or KD (F3666, Bio-Serv) for six weeks. Livers were harvested in the morning in ad lib fed animals. Total RNA from 2-3 animals in each group was used for Affymetrix analysis.