A probiotics strain attenuating the effects of aspirin in the gut
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE53851 | GEO | 2014/01/07
SECONDARY ACCESSION(S): PRJNA233569
REPOSITORIES: GEO
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Project description:Transcriptome analysis of partially degraded and fragmented RNA samples from mus musculus gut Global gene expression profiling has shown the gut transcripts changes through administration of aspirin while probiotics strain administration beforehand attenuates the effect more than teprenone. We analyzed five groups of mice gut using the Affymetrix Mouse Gene 1.0 ST platform. Array data was processed by Affymetrix Exon Array Computational Tool. No techinical replicates were performed.
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Project description:In animal production the use of probiotics supplements to promote animal health is increasing. The objective of this study was to assess the impact of probiotics administration on global gene expression in dairy cows. Lactating Holstein Friesian cows (n=10) from the North Carolina Agricultural and Technical State University dairy herd were used for the study. Treatment was a 10 ml oral drench of FASTtrak microbial pack (Probiotics) (Conklin Company, Kansas City, MO) at the recommended dose in water or water only (control). This treatment was carried out for 60 days. Whole blood was collected at the beginning (Day 0) and end of the study (Day 60) for microarray analysis. We employed microarray expression profiling as a discovery platform to identify genes with potential association with probiotics supplementation in cows. Gene expression analysis identified 10,859 differentially expressed genes- 1168 upregulated genes and 9691 downregulated gene. Results for pathway analysis showed significant pathways associated with innate immunity such as the Toll-like receptor (TLR) pathway, inflammation response and Wingless (Wnt) signaling pathway. Real-time PCR was used to validate gene expression of members of the TLR and Wnt signaling pathway. Treatment affected the expression of innate and adaptive immune response, cytokine and Wnt pathway genes. Daily administration of probiotics to dairy cows impacts global gene expression and particularly the expression of innate immune genes in dairy cows. Ten animals were enrolled in the study and an initial blood sample was collected (Day 0). Animals (n=5) received either daily supplementations with FASTtrak microbial pack (Probiotics) (Conklin Company, Kansas City, MO) or water daily (control animals) for 60 days. Blood samples were collected at the end of the study from probiotics-treated and control animals for RNA extraction and microarray analysis. In vitro effect of lipopolysaccharide (LPS) endotoxin treatment was evaluated using blood samples collected from probiotics-treated animals (Day 60 samples) to serve as positive control array. A pooled sample was generated by taking equal concentration of RNA from experimental animals in each group. Pooled samples from each group was hybridized on Agilent one color bovine v2 bovine (v2) 4x44KÂ array slides.
2015-11-21 | E-GEOD-75240 | biostudies-arrayexpress
Project description:In animal production, the use of probiotics supplements to promote animal health is increasing. The objective of this study was to assess the impact of probiotics administration on global gene expression in dairy cows. Lactating Holstein-Friesian cows (n=10) from the North Carolina Agricultural and Technical State University dairy herd were used for the study. Treatment was a 50 ml oral drench of FASTtrak microbial pack (Probiotics) (Conklin Company, Kansas City, MO) at the recommended dose in sterile endotoxin-free water or sterile endotoxin-free water only (control). This treatment was carried out for 60 days. Whole blood was collected at the beginning (Day 0) and end of the study (Day 60) for microarray analysis. We employed microarray expression profiling as a discovery platform to identify genes with potential association with probiotics supplementation in cows. Gene expression analysis identified 10,859 differentially expressed genes- 1168 upregulated genes and 9691 downregulated gene. Results for pathway analysis showed significant pathways associated with innate immunity such as the Toll-like receptor (TLR) pathway, inflammation response and Wingless (Wnt) signaling pathway. Real-time PCR was used to validate the expression of the Wnt signaling pathway and immune response genes. Probiotic treatment impacted global gene expression, and particularly, the expression of immune response and Wnt signaling pathway genes. Oral administration of probiotics to dairy cows impacts global gene expression and particularly the expression of innate immune genes in dairy cows.
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Project description:Oral aspirin challenge may induce different global CpG methylation patterns between aspirin-exacerbated respiratory disease (AERD) and aspirin-tolerant asthma (ATA), which may affect gene expression several hours later. Therefore, in the present study, we compared global CpG methylation profiles before and after an oral aspirin challenge in patients with asthma. In addition, we compared differences in methylation profiles between AERD and ATA using an Illumina 860K Infinium Methylation EPIC BeadChip array platform, which had greater coverage than in the previous study (26,485 CpGs) to discover new methylated CpGs in PBLs associated with aspirin-induced bronchospasm.
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Project description:Aspirin, or acetylsalicylic acid is widely used to control pain, inflammation and fever. An important property of aspirin is its ability to acetylate multiple cellular proteins with some pharmacological functions explicable by the irreversible acetylation of cyclooxygenases at active site serine residues. We have used a labeled form of aspirin, aspirin-d3 to acetylate proteins in cultured human cells, and unambiguously identified over 12000 sites of acetylation, using acetylated lysine peptide enrichment combined with mass-spectrometry-based proteomics. Aspirin increases lysine acetylation occupancy of the majority of detected endogenous sites, but leaves almost unchanged a small group that are already highly acetylated. We show that cells are remarkably tolerant of this acetylation insult unless endogenous deacetylases are inhibited. This work raises the possibility that rather than single protein effects, some of the clinical features of aspirin may be the consequence of multiple concurrent protein modifications, and that combining aspirin with lysine deacetylase inhibitors may have important medical implications.
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Project description:STOX1 overexpressing placentas generate preeclampsia-like symptoms in pregnant mice. These symptoms are reverted by aspirin. The experiment aims at analyzing placental expression in Transgenic/non transgenic with and withou aspirin, in the placentas at 16,5 days post-coïtum. There are two strains of transgenic mice that express the transgene at different levels: STOX42 about 15 fold that of STOX13. STOX13 expressed the human STOX1 roughly at the level of the mouse endogeneous Stox1 in the placenta.
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