Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Hepatic transcriptome profiling in beef cattle to determine the effects of fescue toxicity

ABSTRACT: The objective of our study was to assess the effect of fescue toxicosis on the overall transcriptomics profile of liver tissue on growing Angus × Simmental steers and heifers. The susceptibility was determined by the T-snip genetic tests for a total of 42 pregnant cows. At mid-gestation, these animals were randomly assigned to control group which received a based diet and fed endophyte free fescue seeds; a treatment group was fed endophyte-infected tall fescue seeds for 30 days. RNA-seq experiments were performed in liver biopsy samples, and a total of 828 differentially expressed genes were detected.

ORGANISM(S): Bos taurus

PROVIDER: GSE208241 | GEO | 2023/08/11

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Effects of Fescue Toxins On Hepatic Gene Expression in Mice.

Project description:Fescue toxicosis is a disease of wild and domestic animals grazing on fescue pasture infected with the endophytic fungus, Neotyphodium Coenophialum. Mice, previously selected for increased sensitivity to endophyte-infected fescue seed diets indicated by slow weight gain, were used to study the effects of fescue toxicosis on hepatic gene expression. Liver genes differentially expressed due to fescue toxins were studied using DNA microarray. A two-stage ANOVA of microarray data identified forty differentially expressed genes between mice fed endophyte-infected (E+) and endophyte-free (E-) fescue seeds. Significant Analysis of Microarray (SAM) analysis identified 9 genes as differentially expressed between treatment groups. Hierarchical clustering with the 40 genes identified by ANOVA clearly separate the mice according to their diets, with 100% confidence as computed by bootstrap analysis. Expressions of eleven genes were verified using quantitative real-time PCR (qPCR). The E+ diet resulted in downregulation of genes involved in sex-steroid metabolism pathway, genes involved in cholesterol and lipid metabolism. Keywords = Endophyte Keywords = Fescue Toxicosis Keywords = microarray Keywords: repeat sample

2005-01-26 | GSE2134 | GEO

Pituitary Gene Expression Profiles of Growing Beef Steers Grazing High versus Low Endophyte-Infected Tall Fescue Grass

Project description:Neotyphodium coenophialum is an endophytic fungus that infects most tall fescue (Festuca arundinacea) pastures that are commonly used in animal grazing systems in the United States. Beef cattle grazing such pastures are impaired in health and production performance, resulting in a large economic loss in US food-animal production systems. Based on clinical and biochemical blood analyte profiles, hepatic targeted gene and protein analyses, and hepatic transcriptomic profiling, microarray analysis using the WT Btau 4.0 Array (version 1.0, Affymetrix, Inc., Santa Clara, CA) was conducted to determine if grazing endophyte-infected tall fescue pastures affects pituitary gene expression profiles of growing beef steers. The specific overall hypothesis tested was that grazing high endophyte-infected pasture would alter the pituitary genomic expression profiles of the same growing steers, especially genes involved in production and secretion of prolactin, growth hormone, thyroid stimulating hormone, and adrenocorticotropic hormone. Sixteen steers were assigned to graze either a low toxic endophyte tall fescue-mixed grass (LE treatment, 5.7 ha, n = 8) or a high toxic endophyte infected tall fescue (HE treatment, 5.7 ha, n = 8) pasture located in the University of Kentucky Agricultural Research Center. All steers had ad libitum access to fresh water, an industry standard mineral-vitamin supplement, and grazed respective pastures for 89 to 105 days. Whole pituitaries were collected for RNA extraction and microarray analysis.

2014-10-23 | E-GEOD-62570 | biostudies-arrayexpress

Hepatic Gene Expression Profiles of Growing Beef Steers Grazing High vs. Low Endophyte-Infected Tall Fescue Grass

Project description:Neotyphodium coenophialum is an endophytic fungus that infects most tall fescue (Festuca arundinacea) pastures that are commonly used in animal grazing systems in the United States. Beef cattle grazing such pastures are impaired in health and production performance, resulting in a large economic loss in US food-animal production systems. Based on the clinical symptoms and laboratory analyses of blood, it was hypothesized that such affected cattle display liver-specific changes in the expression of gene transcripts that are associated with the metabolic enzymes and transporters critical for beef health and performance. Microarray analysis using the GeneChip Bovine Genome Array (Affymetrix, Inc., Santa Clara, CA) was conducted to determine if grazing endophyte-infected tall fescue pastures affects the liver gene expression profiles of growing beef steers. Nineteen steers were assigned to graze either a low toxic endophyte tall fescue-mixed grass (LE treatment, 5.7 ha, n = 9) or a high toxic endophyte infected tall fescue (HE treatment, 5.7 ha, n = 10) pasture located in the University of Kentucky Agricultural Research Center. All steers had ad libitum access to fresh water and an industry standard mineral-vitamin supplement. 88 days grazing on pasture. Approximately 2 g of tissue from the right lobe of the liver of each steer were collected for RNA extraction and microarray analysis.

2010-11-30 | E-GEOD-23894 | biostudies-arrayexpress

Effects of fescue toxicosis on rat hepatic tissue

Project description:Rats (n=24) were fed ad libitum diets containing either ground endophyte-free (E-) seed or endophyte–infected (E+) seed for five days at thermoneutrality (21°C). Rats (n=24) with intraperitonial transmitters were used with core temperature (Tc) and general activity measured every 5 minutes during the study. At treatment end, the liver was removed, weighed and frozen in liquid nitrogen. Twelve rats were selected for microarray experiments, based on degree of sensitivity to fescue toxicosis. Degree of sensitivity was based on changes in relative liver weights, feed intake, average daily gain, and Tc from pretreatment levels. RNA was extracted from liver samples, converted to cDNA, and hybridized with the printed oligonucleotide slides. The microarray data was analyzed using Wolfinger's two step ANOVA model. Keywords: repeat sample

2005-04-28 | GSE2452 | GEO

Effects of fescue toxicosis on rat hepatic tissue

Project description:Rats (n=24) were fed ad libitum diets containing either ground endophyte-free (E-) seed or endophyteâ??infected (E+) seed for five days at thermoneutrality (21Â°C). Rats (n=24) with intraperitonial transmitters were used with core temperature (Tc) and general activity measured every 5 minutes during the study. At treatment end, the liver was removed, weighed and frozen in liquid nitrogen. Twelve rats were selected for microarray experiments, based on degree of sensitivity to fescue toxicosis. Degree of sensitivity was based on changes in relative liver weights, feed intake, average daily gain, and Tc from pretreatment levels. RNA was extracted from liver samples, converted to cDNA, and hybridized with the printed oligonucleotide slides. The microarray data was analyzed using Wolfinger's two step ANOVA model.

2010-06-10 | E-GEOD-2452 | biostudies-arrayexpress

Sperm miRNA expression differences between bulls consuming toxic and non-toxic tall fescue seed

Project description:The objectives of our study were to identify microRNA (miRNA) present in bovine sperm and to evaluate the effects of fescue toxicosis on sperm miRNA expression. Angus bulls were assigned to treatments of either toxic or non-toxic fescue seed diets. Semen was collected and subjected to microRNA (miRNA) isolation after 126 days. Three bull's sperm miRNA samples from each treatment group were chosen and pooled for deep sequencing. Sequencing results were used to create a custom microarray for miRNA comparison between groups. LC Sciences was used as a service provider for the sequencing and custom microarray.

2014-12-10 | E-GEOD-61745 | biostudies-arrayexpress

Pituitary Gene Expression Profiles of Growing Beef Steers Grazing High versus Low Endophyte-Infected Tall Fescue Grass

2014-10-23 | GSE62570 | GEO

Hepatic Gene Expression Profiles of Growing Beef Steers Grazing High vs. Low Endophyte-Infected Tall Fescue Grass

2010-11-30 | GSE23894 | GEO

Impact of fetal exposure to mycotoxins on longissimus muscle fiber hypertrophy and miRNA transcriptome

Project description:Longissimus muscle samples were collected from lambs exposed in utero to mycotoxins (E-, endophyte-free tall fescue seed without ergot alkaloids or E+, endophyte-infected tall fescue seed containing ergot alkaloids) during mid-gestation (MID; E+/E-; N) or late-gestation (LATE; E-/E+; T) harvested at two developmental stages (FETAL, gestational d133) or (MKT, near maturity, 250 d of age). Muscle samples were examined to determine the impact of in utero mycotoxin exposure on skeletal muscle fiber hypertrophy and the miRNA transcriptome at FETAL and MKT.

2022-06-03 | GSE195597 | GEO

Tall fescue pot

Project description:Tall fescue pot Metagenome

| PRJNA825301 | ENA