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ABSTRACT:
PROVIDER: PRJNA707102 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Cattle are often fed high concentrate diets to increase energy intake and improve overall animal performance. Such diets also cause changes in fermentation patterns and epithelial function. However, the molecular mechanisms involved in regulating epithelial function for cattle fed high concentrate diets have not been elucidated. In this study, we aimed to gain a broad overview of the involved molecular mechanisms by detecting differentially expressed genes (DEG) in rumen tissue from dairy cows fed a low concentrate (LC; 8%) compared to a high concentrate (HC; 64%) diet using a bovine-specific microarray platform containing 16,846 unique gene loci and 5,943 ESTs from the bovine genome. Feeding the HC diet increased the total volatile fatty acid concentration and markedly reduced ruminal pH, suggesting that the dietary treatments used did induce changes in ruminal fermentation. In response to changes in the ruminal environment, a total of 5,200 elements were detected as DEG in ruminal tissue with >1.5-fold expression change (P < 0.05) for cows fed HC relative to LC. Of the 5,200 DEG, 2,233 and 2,967 were up- and down-regulated, respectively. The GENECODIS analysis elucidated that relationships among the DEG represented 19 annotations characterized with GO molecular function and KEGG pathways with 26 DEG identified in multiple annotations such as calcium signaling and gap junction pathways. Among those DEG that were identified numerous times, catalytic subunit of cAMP-dependent protein kinase (PRKACB) was down-regulated in ruminal tissue from cows fed HC, suggesting that this gene may have important roles including regulation of cell proliferation and differentiation, and intracellular pH regulation. Two-condition experiment, High concentrate vs. Low concentrate diets. Biological replicates: 5 high concentrate fed, 5 low concentrate, independently grown and harvested. Two replicates per array.
2010-10-02 | E-GEOD-19802 | biostudies-arrayexpress
Project description:Cattle are often fed high concentrate diets to increase energy intake and improve overall animal performance. Such diets also cause changes in fermentation patterns and epithelial function. However, the molecular mechanisms involved in regulating epithelial function for cattle fed high concentrate diets have not been elucidated. In this study, we aimed to gain a broad overview of the involved molecular mechanisms by detecting differentially expressed genes (DEG) in rumen tissue from dairy cows fed a low concentrate (LC; 8%) compared to a high concentrate (HC; 64%) diet using a bovine-specific microarray platform containing 16,846 unique gene loci and 5,943 ESTs from the bovine genome. Feeding the HC diet increased the total volatile fatty acid concentration and markedly reduced ruminal pH, suggesting that the dietary treatments used did induce changes in ruminal fermentation. In response to changes in the ruminal environment, a total of 5,200 elements were detected as DEG in ruminal tissue with >1.5-fold expression change (P < 0.05) for cows fed HC relative to LC. Of the 5,200 DEG, 2,233 and 2,967 were up- and down-regulated, respectively. The GENECODIS analysis elucidated that relationships among the DEG represented 19 annotations characterized with GO molecular function and KEGG pathways with 26 DEG identified in multiple annotations such as calcium signaling and gap junction pathways. Among those DEG that were identified numerous times, catalytic subunit of cAMP-dependent protein kinase (PRKACB) was down-regulated in ruminal tissue from cows fed HC, suggesting that this gene may have important roles including regulation of cell proliferation and differentiation, and intracellular pH regulation.
2010-10-02 | GSE19802 | GEO
Project description:An improved MALDI-TOF MS data analysis pipeline for the identification of carbapenemase-producing Klebsiella pneumoniae
| PRJEB43543 | ENA
Project description:MALDI imaging MS reveals candidate lipid markers of polycystic kidney disease
| PRJNA209840 | ENA
Project description:Whole-genome sequencing evaluation of MALDI-TOF MS as a species identification tool for Streptococcus suis
| PRJEB45445 | ENA
Project description:We investigated changes in rumen fermentation, peripheral blood metabolites and hormones, and hepatic transcriptomic dynamics in Holstein cows with and those without subacute ruminal acidosis (SARA) during the periparturient period.
2020-01-17 | GSE143765 | GEO
Project description:Agrobacterium spp. nosocomial outbreak assessment using rapid MALDI-TOF MS based typing, confirmed by whole genome sequencing
| PRJEB34002 | ENA
Project description:The goal of this study was to test the hypothesis that sodium selenite (ISe) vs. a 1:1 blend (MIX) of ISe and SEL-PLEX in a basal vitamin-mineral (VM) mix would differentially alter corpora lutea transcriptome profiles in non-lactating beef cows. Predominately-Angus cows were randomly selected from herds of fall-calving cows consuming VM mixes that contained 35 ppm Se as ISe and MIX forms. Cows were depleted of Se for 45 d followed by a 45 d repletion period with ISe to bring all cows to Se adequate status. Cows were then randomly assigned to treatment (ISe, n=5; or MIX, n=5) with treatments administered for at least 90 days using in-pasture Calan gates. Corpora lutea samples were then collected on Day 7 post-estrus and examined for changes in global expression patterns by microarray analysis.
2022-06-01 | GSE190092 | GEO
Project description:The ruminant liver has multiple roles in the dairy cow and many of these are crucial in nutrient supply during lactation. Reduced feed intake alters the expression of many genes and pathways in the liver, inducing a period of negative energy balance. Once-daily milking is a management strategy to reduce the effects of periods of negative energy balance so the objective of this study was to determine if once-daily milking altered hepatic gene transcription during a period of negative energy balance induce by caloric restriction. Multiparous Holstein-Friesian and Holstein-Friesian x Jersey cows (n = 120) were grazed on pasture and milked twice daily (2X) from calving until 34 ± 6 days in milk (mean ± standard deviation). Cows were then allocated to one of four treatments in a 2 x 2 factorial arrangement. Treatments consisted of two milking frequencies (2X or once daily; 1X) and two feeding levels for three weeks: adequately fed (AF), consuming 14.3 kg dry matter intake/cow per d, or underfed (UF) consuming 8.3 kg dry matter intake /cow per d. After the treatment period, all cows were fed to target grazing residuals ? 1600 kg DM/cow per d and milked 2X for 20 wk. Liver tissue was collected from 12 cows per treatment by subcutaneous biopsy at 3 wk relative to treatment start, RNA extracted and transcript abundance of genes quantified.
2014-01-08 | GSE47925 | GEO