Fecal microbioma from mice subjected to different diets
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ABSTRACT:
PROVIDER: PRJNA814431 | ENA |
REPOSITORIES: ENA
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Project description:To determine the concentration of MCFA and SCFA in mouse fecal pellets. Mice are fed different diets.
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Project description:The aim of this study was to test the hypothesis that replenishing the microbiota with a fecal microbiota transplant (FMT) can rescue a host from an advanced stage of sepsis. We developed a clinically-relevant mouse model of lethal polymicrobial gut-derived sepsis in mice using a 4-member pathogen community (Candida albicans, Klebsiella oxytoca, Serratia marcescens, Enterococcus faecalis) isolated from a critically ill patient. In order to mimic pre-operative surgical patient condition mice were exposed to food restriction and antibiotics. Approximately 18 hours prior to surgery food was removed from the cages and the mice were allowed only tap water. Each mouse received an intramuscular Cefoxitin injection 30 minutes prior to the incision at a concentration of 25 mg/kg into the left thigh. Mice were then subjected to a midline laparotomy, 30% hepatectomy of the left lateral lobe of the liver and a direct cecal inoculation of 200 µL of the four pathogen community. On postoperative day one, the mice were administered rectal enema. Mice were given either 1 ml of fecal microbiota transplant (FMT) or an autoclaved control (AC). This was again repeated on postoperative day two. Mice were then followed for mortality. Chow was restored to the cages on postoperative day two, approximately 45 hours after the operation. The injection of fecal microbiota transplant by enema significantly protected mice survival, reversed the composition of gut microflora and down-regulated the host inflammatory response. The cecum, left lobe of the liver, and spleen were isolated from mice for microarray processing with three or more replicates for six expermental conditions: non-treated control, SAHC POD1, SAHC.AC POD2, SAHC.FMT POD2, SAHC.AC POD7, SAHC.FMT POD7
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Project description:The aim of this study was to test the hypothesis that replenishing the microbiota with a fecal microbiota transplant (FMT) can rescue a host from an advanced stage of sepsis. We developed a clinically-relevant mouse model of lethal polymicrobial gut-derived sepsis in mice using a 4-member pathogen community (Candida albicans, Klebsiella oxytoca, Serratia marcescens, Enterococcus faecalis) isolated from a critically ill patient. In order to mimic pre-operative surgical patient condition mice were exposed to food restriction and antibiotics. Approximately 18 hours prior to surgery food was removed from the cages and the mice were allowed only tap water. Each mouse received an intramuscular Cefoxitin injection 30 minutes prior to the incision at a concentration of 25 mg/kg into the left thigh. Mice were then subjected to a midline laparotomy, 30% hepatectomy of the left lateral lobe of the liver and a direct cecal inoculation of 200 µL of the four pathogen community. On postoperative day one, the mice were administered rectal enema. Mice were given either 1 ml of fecal microbiota transplant (FMT) or an autoclaved control (AC). This was again repeated on postoperative day two. Mice were then followed for mortality. Chow was restored to the cages on postoperative day two, approximately 45 hours after the operation. The injection of fecal microbiota transplant by enema significantly protected mice survival, reversed the composition of gut microflora and down-regulated the host inflammatory response.
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Project description:The main aim of this experiment was to investigate gene expression on human adipose tissue after two different 4-week energy-restricted diets. Our questions consisted in understanding how gene expression was linked to clinical parameters of obese patients and whether the two diets were discriminated this data. The subjects were randomly allocated, in a cross-over design, to two periods of 4 weeks of an energy restricted isocaloric diet of 1200 kcal as either a conventional diet (LC-CONV) or a special energy restricted diet compensated by proteins (LC-P-LGI). The two nutritional periods were separated by a wash-out interval of 8 weeks. The samples who contain a K in their name correspond to the LC-P-LGI diet while those who contain a C correspond to LC-CONV diet.
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Project description:The effects of different diets on bovine serum extracellular vesicle (EV)-miRNAs are explored by small RNA Solexa sequencing. We partly replaced alfalfa hay with whole cotton seed and soybean hull in the feed formula of treat cows. Small RNAs are enriched in bovine serum EVs, including miRNAs, snRNAs, tiRNAs, Cis-regulatory elements, piRNAs, etc. Totally 359 bos taurus miRNAs are identified by sequencing. There are 15 immune-related miRNAs in the top 20 serum EV-miRNAs, accounting for about 80% of the total. Seven differently expressed known miRNAs were detected in responding to different diets. KEGG analysis showed differently expressed miRNAs are related to hormone signal pathways and protein metabolism.
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Project description:RNA-seq of zebrafish larvae fed with different diets
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