Cow mammary nutrigenomics
Ontology highlight
ABSTRACT:
ORGANISM(S): Bos taurus
PROVIDER: GSE62728 | GEO | 2015/04/01
SECONDARY ACCESSION(S): PRJNA264972
REPOSITORIES: GEO
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Project description:Twelve midlactation cows received 4 diets differing in forage-to-concentrate ration (High (HF) versus Low (LF) forage supplemented or not with lipids (HF with whole intact rapeseeds (HF-RS) and LF with sunflower oil (LF-SO)) 12 cows got into 4 groups, each cow was received 4 different diets in a latin square design Green*txt and Red_*txt raw data files contain Cy3 and Cy5 signal intensities, respectively.
2015-04-01 | E-GEOD-62728 | biostudies-arrayexpress
Project description:Animal nutrition considerably affects milk composition that influences its nutritional quality. Milk component synthesis and secretion by the mammary gland involve the expression of a large number of genes whose nutritional regulation remains poorly defined. In this study, 16 lactating goats received 4 experimental diets differing in either forage to concentrate ratio (high forage, HF, or low forage, LF) supplemented, or not, with lipids (whole rapeseeds, RS, or sunflower oil, SO) in a 4 x 4 Latin Square design. To investigate the pathways regulated by nutrition, we examined the effect of these diets on the expression of approximately 8400 genes in caprine mammary gland using a bovine oligonucleotide microarray.
2009-11-29 | GSE11592 | GEO
Project description:Animal nutrition considerably affects milk composition that influences its nutritional quality. Milk component synthesis and secretion by the mammary gland involve the expression of a large number of genes whose nutritional regulation remains poorly defined. In this study, 16 lactating goats received 4 experimental diets differing in either forage to concentrate ratio (high forage, HF, or low forage, LF) supplemented, or not, with lipids (whole rapeseeds, RS, or sunflower oil, SO) in a 4 x 4 Latin Square design. To investigate the pathways regulated by nutrition, we examined the effect of these diets on the expression of approximately 8400 genes in caprine mammary gland using a bovine oligonucleotide microarray. Due to the limited quantity of mammary RNA available, equal amounts of total RNA sample from mammary gland of each goat belonging to the same Latin Square group were mixed together before labeling. Each mammary pooled sample (4 by dietary treatment) was then co-hybridized with a standard reference corresponding to a mixture of purified total RNA from several caprine tissues. Each hybridization was repeated in a dye-swap manner for a total of 32 slides (8 slides and 4 independent comparisons by dietary treatment).
2009-11-29 | E-GEOD-11592 | biostudies-arrayexpress
Project description:Liver and mammary gland are among the most prominent organs during lactation in dairy cows. With the purpose to understand 1) the adaptation of liver and mammary to different levels of forage/concentrate ration (60:40 vs. 40:60) and 2) the crosstalk between the two organs during lactation, a transcriptome analysis was performed on liver and mammary tissues of 10 primiparous dairy cows in mid-lactation. The analysis was performed using a 4x44K Bovine Agilent microarray chip. The mammary and liver samples were obtained from a subset of animals from a larger experiment where cows were fed two different levels of forage/concentrare ration (Archives of Animal Nutrition, 68:1, 63-71).
2017-02-14 | GSE73980 | GEO
Project description:Negative energy balance (NEB) is an altered metabolic state in high yielding cows that occurs during the first few weeks postpartum when energy demands for lactation and maintenance exceed the energy supply from dietary intake. NEB can, in turn, lead to metabolic disorders and to reduced fertility. Alterations in the expression of more than 700 hepatic genes have previously been reported in a study of NEB in postpartum dairy cows. miRNAs (microRNA) are known to mediate many alterations in gene expression post transcriptionally. To study the hepatic miRNA content of postpartum dairy cows, including their overall abundance and differential expression, in mild NEB (MNEB) and severe NEB (SNEB) short read RNA sequencing was carried out. A NEB dairy cow model developed previously was used. In this model differential feeding and milking regimes were used to produce two groups of Holstein Friesian cows; MNEB and SNEB. Briefly, MNEB cows were fed ad libitum grass silage with 8 kg/day of a 21% crude protein dairy concentrate and milked once daily. SNEB cows were fed 25 kg/day silage with 4 kg/day concentrate and milked thrice daily. All procedures were carried out under license in accordance with the European Community Directive, 86-609-EC. Cows were slaughtered approximately 14 days postpartum (MNEB; 13.6 ± 0.75, range 11–15; SNEB 14.3 ± 0.56, range 13–16 ) and the entire liver was removed within 15 to 30 min. Samples weighing approximately 1 g were dissected, rinsed in RNase-free phosphate buffer, snap-frozen in liquid nitrogen and stored at -80ºC. Liver tissue samples from 5 SNEB and 3 MNEB animals were used for miRNA library preparation.
2014-03-14 | E-GEOD-55882 | biostudies-arrayexpress
Project description:Background : In lactating cow, a sunflower oil supplementation modulated the milk composition and the mammary genes expression whose mechanisms of regulations are unclear. Results : This lipid supplementation provoke, in mammary gland, the down regulation of microRNA miR-20a-5p and miR-142-5p, which are predicted to target genes previously determined as differentially expressed including those involved in lipid metabolism. Conclusion : Those two miRNA are good candidates to explain lipogenic genes regulations after sunflower oil supplementation. Significance : The current study clarified the nutriregulation of miRNA in the mammary gland. MiRNomes obtained by NGS sequencing of mammary gland of Holstein cows at the peak of lactation received a low forage diet supplemented or not with 4% of sunflower oil were compared. MiRNA differentially expressed confirmed by RT-qPCR were related to differentially expressed genes list previously identified in the same samples.
2016-07-01 | E-GEOD-81616 | biostudies-arrayexpress
Project description:Expression pattern of mRNA of liver and mammary in dairy cows fed two different level of forage/concentrate ration
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Project description:Using high-throughput deep sequencing, microRNA expression was profiled across six dietary intervention groups, including low fat (LF) or high fat (HF) with or without calorie restriction (LF+CR, HF+CR) or exercise (LF+Ex, HF+Ex).
2017-12-13 | GSE87513 | GEO
Project description:Using high-throughput deep sequencing, both coding and long non-coding RNA expression was profiled across six dietary intervention groups, including low fat (LF) or high fat (HF) with or without calorie restriction (LF+CR, HF+CR) or exercise (LF+Ex, HF+Ex).
2017-12-13 | GSE87512 | GEO
Project description:Glyphosate (GLY) is one of the most used active substances in broad-band herbicides worldwide. Although farm animals might be orally exposed to this herbicide via GLY contaminated feedstuffs, not much is known about possible hepatotoxic effects of GLY. As hepatic xenobiotic and nutrient metabolism are closely interlinked, the toxic effects of GLY residues might be influenced by nutrient supply to the liver. Therefore, a feeding trial with lactating dairy cows was conducted to investigate effects of GLY contaminated feedstuffs and different concentrate feed proportions (CFP) in the diets as a tool for varying nutrient supply to the liver. Therefore, 61 German Holstein cows (207 ± 49 days in milk; mean ± standard deviation) were either fed a GLY contaminated total mixed ration (TMR, GLY, average mean GLY intake 122.7 µg/kg bodyweight/day) or control TMR (CON, average mean GLY intake 1.2 µg/kg bodyweight/day) for 16 weeks. Additionally, both groups were further split into subgroups fed a lower (LC, 30% on dry matter basis) or a higher (HC, 60% on dry matter basis) CFP. Blood parameters aspartate aminotransferase, γ-glutamyltransferase, glutamate dehydrogenase, cholesterol, triglyceride, total protein, calcium, phosphorus, acetic acid and urea as well as histopathological evaluation were not influenced by GLY, whereas all mentioned parameters were at least affected by time, CFP or by an interactive manner between time and CFP. Total bilirubin blood concentration was significantly influenced by an interaction between GLY and CFP with temporarily elevated concentrations in GLYHC, whereas the reasons and biological relevance remain unclear. Gene expression analysis indicated 167 CFP-responsive genes, while seven genes showed altered expression in GLY groups compared to CON groups. Since expression changes of GLY-responsive genes were low and liver-related blood parameters changed either not at all or only slightly, the tested GLY formulation was considered to have no toxic effects on the liver of dairy cows.
2021-01-27 | GSE158818 | GEO