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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Gene expression profiling in porcine chronic myocardial ischemia treated with intramyocardial injections of secretome

ABSTRACT: Closed-chest reperfused MI was induced in pigs by 90-min occlusion, followed by reperfusion of the mid LAD (day 0) and by cardiac MRI with late enhancement (LE) at day 3. At day 30 the animals received either porcine APOSEC (n=8) or placebo medium (n=8) in a randomized manner, injected into the border zone of MI using 3D NOGA percutaneous intramyocardial guidance. At day 60, control cardiac MRI with LE and measurements of myocardial viability via diagnostic NOGA were performed. Gene expression profiling of the infarct core, border zone and normal myocardium was performed using microarray analysis, confirmed by quantitative real-time PCR. Percutaneous endomyocardial injections of APOSEC led to a significant (p<0.05) decrease in infarct size and in improvement of cardiac index and myocardial viability compared to medium treatment. Trend towards higher LV ejection fraction was observed in APOSEC vs. the Medium placebo group (45.4M-BM-15.9% vs 37.4M-BM-18.9%, p=0.052). Transcriptome analysis revealed significant downregulation of caspase-1 and other inflammatory genes in the APOSEC-affected areas. PCR showed higher expression of myogenic factor, Mefc2 (p<0.05) gene with downregulated caspase-3 (p<0.05) in the APOSEC-pigs. We have investigated the effects of catheter-based endomyocardial injections of APOSEC (secretome of apoptotic peripheral white blood cells) on porcine chronic post-infarction (MI) left ventricular (LV) dysfunction and gene expression profile. Pigs randomized to receive eithersecretome (n=8) or medium (placebo control, n=8)

ORGANISM(S): Sus scrofa

SUBMITTER: Mariann Gyongyosi

PROVIDER: E-GEOD-47397 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Gene expression profiling in porcine chronic myocardial ischemia treated with intramyocardial injections of secretome

Project description:Closed-chest reperfused MI was induced in pigs by 90-min occlusion, followed by reperfusion of the mid LAD (day 0) and by cardiac MRI with late enhancement (LE) at day 3. At day 30 the animals received either porcine APOSEC (n=8) or placebo medium (n=8) in a randomized manner, injected into the border zone of MI using 3D NOGA percutaneous intramyocardial guidance. At day 60, control cardiac MRI with LE and measurements of myocardial viability via diagnostic NOGA were performed. Gene expression profiling of the infarct core, border zone and normal myocardium was performed using microarray analysis, confirmed by quantitative real-time PCR. Percutaneous endomyocardial injections of APOSEC led to a significant (p<0.05) decrease in infarct size and in improvement of cardiac index and myocardial viability compared to medium treatment. Trend towards higher LV ejection fraction was observed in APOSEC vs. the Medium placebo group (45.4±5.9% vs 37.4±8.9%, p=0.052). Transcriptome analysis revealed significant downregulation of caspase-1 and other inflammatory genes in the APOSEC-affected areas. PCR showed higher expression of myogenic factor, Mefc2 (p<0.05) gene with downregulated caspase-3 (p<0.05) in the APOSEC-pigs. We have investigated the effects of catheter-based endomyocardial injections of APOSEC (secretome of apoptotic peripheral white blood cells) on porcine chronic post-infarction (MI) left ventricular (LV) dysfunction and gene expression profile.

2013-12-31 | GSE47397 | GEO

Expression data from C57BL/6J and MRL/MpJ hearts following acute myocardial infarction

Project description:The Murphy Roth Large (MRL) mouse, a strain capable of regenerating right ventricular myocardium, has a high post-myocardial infarction (MI) survival rate compared with C57BL6/J (C57) mice. The biological processes responsible for this survival advantage are unknown. We compared acute post-MI gene expression in C57 and MRL hearts using microarrays and identified promising candidate biological processes underlying increased survival in the MRL. Hearts from both strains were excised at different time points before or after MI for RNA extraction and hybridization to MOE430A arrays. Baseline hearts were excised from healthy mice that had not undergone the MI procedure (day 0). Infarct tissue in this case means tissue taken from the anterior-apical region that would be the infarct region in a post-MI heart. Non-infarct covers the remainder of the LV. Post-MI hearts were excised either 1 or 5 days after MI. We had successful hybridizations for 3 replicates each of C57 day 0 infarct and non-infarct tissue (6 arrays), 4 MRL day 0 infarct and non-infarct tissue (8 arrays), 4 C57 day 1 infarct and non-infarct tissue (8 arrays), 4 MRL day 1 infarct and non-infarct tissue (8 arrays), 4 C57 day 5 infarct and non-infarct tissue (8 arrays), and 4 MRL day 5 infarct and non-infarct tissue (8 arrays).

2010-05-27 | E-GEOD-19322 | biostudies-arrayexpress

Pharmacodynamic effects of GLP-1 agonist liraglutide in adolescent, prediabetic pigs

Project description:GLP-1 agonists are potent glucose-lowering agents, however, their effect on adolescent organisms needs to be clarified Transgenic pigs expressing a dominant-negative GLP receptor randomly assigned for a 90 day treatment trial with liraglutide (0.6-1.8 mg per day)/placebo

2015-12-31 | E-GEOD-56427 | biostudies-arrayexpress

Gene expression data from myocardial infarction porcine samples

Project description:The use of cDNA microarrays has made it possible to analyze expression of thousands of genes simultaneously. We employed microarray gene expression profiling of porcine cDNA to compare myocardial gene expression in infarct core and remote myocardium at 1 week (n=3), 4 weeks (n=3), and 6 weeks (n=3) after surgically induced myocardial infarction (MI) and in sham-operated controls (n=3). More than 8,000 cDNA sequences were identified in myocardium that showed differential expression in response to MI. Different temporal and spatial patterns of gene expression were recognized in the infarct core tissue within this large set of data. Microarray gene profiling revealed candidate genes, some of them described for the first time, which elucidate changes in biological processes at different stages after MI. We evaluated temporal gene expression in a porcine model of myocardial infarction by microarray technology. Nine female pigs (Sus scrofa crossbreed Landrace x Large White) weighing 30-40 kg were subjected to experimental MI by a double-ligation of the first marginal branch of the circumflex artery. Animals were randomly sacrificed at 1 week (n=3), 4 weeks (n=3), or 6 weeks (n=3) after MI. Three paired myocardial samples from the infarct core and remote myocardium were analyzed at each time point. Myocardial samples from sham-operated animals (open-chest cardiac exposure without coronary artery ligation; n=3) were included as physiological controls.

2013-03-01 | E-GEOD-34569 | biostudies-arrayexpress

Transcriptomic profiling of chronic infarcted pig hearts

Project description:Myocardial infarction (MI) is the leading cause for hear failure (HF). Following MI, the non-infarcted region of left ventricle (LV) is critical for maintaining heart function, and disruption of the LV contributes greatly to post-MI HF. Transcriptomic profiling by high-throughput sequencing was performed in a chronic HF pig model, to explore the molecular changes in the post-MI LV related to cardiovascular deterioration. Samples were taken from heart tissue of MI-induced pigs and from control pigs not subjected to MI. Regions of the heart where samples were taken included the site of ischemia (LV ischemia), area bordering ischemia (LV border), area remote to ischemia (LV remote) and the right ventricle (RV).

2021-10-04 | E-MTAB-8856 | biostudies-arrayexpress

Expression data for pharmacogenomics antiplatelet therapy

Project description:Antiplatelet therapy is the most important treatment to reduce the risk of developing recurrent thrombosis, and to prevent progression to a complete occlusion of coronary arterial disease (CAD) patients after percutaneous coronary intervention Aim of study was to investigate the relationship between response to antiplatelet drugs and global mRNA gene expression in peripheral blood cells (PBC) in patients with coronary arterial disease (CAD) All patients were treated crhonically with acetylsalicylic acid (ASA) (100 mg/day) and clopidogrel (75 mg/day). Blood samples were drown before PCI to evaluate platelet reactivity by VerifyNowÂ® ASA and P2Y12 assays and mRNA expression was measured by Affymetrix GeneChip Human Exon 1.0 ST array.

2012-09-15 | E-GEOD-32226 | biostudies-arrayexpress

Behavioural and brain gene expression profiling in pigs during tail biting outbreaks - evidence of a tail biting resistant phenotype

Project description:Brain gene expression in pigs housed in a pen during a tail biting outbreak compared with pigs housed in control pens.

2012-09-30 | E-MEXP-3643 | biostudies-arrayexpress

Brain gene expression differences are associated with abnormal tail biting behavior in pigs

Project description:Gene expression in the hypothalamus and pre frontal cortex in pigs performing and receiving tail biting behaviour was compared with expression in pigs not performing or receiving tail biting

2013-11-12 | E-MEXP-3630 | biostudies-arrayexpress

Hepatic transcriptome changes in testosterone-deficient pigs fed a high-fat diet

Project description:To gain insight into the role of testosterone in modulating hepatic fat accumulation, we collected liver tissues from high fat diet-fed intact male pigs, castrated male pigs, and castrated male pigs with testosterone replacement. RNA-Seq was employed to profile hepatic gene expression in pigs with different testosterone levels. Liver mRNA profiles of intact male pigs fed a HFC diet, castrated male pigs fed a HFC diet, and castrated male pigs treated with testosterone fed a HFC diet were generated by deep sequencing, using Illumina HiSeq 2000.

2015-01-08 | E-GEOD-62696 | biostudies-arrayexpress

Effect of selection on residual feed intake on gene expression in porcine skeletal muscle (115 kg body weight)

Project description:Transcriptional profiling in liver of 24 pigs of 115 kg body weight from lines divergently selected for residual feed intake (RFI): low-RFI pigs fed ad libitum (RFIneg), high-RFI pigs fed ad libitum (RFIpl) and high-RFI pigs restricted at RFIneg feeding level (RFIplR) to investigate the impact of feeding independently of selection. Three experimental conditions: low-RFI (RFIneg), high-RFI (RFIpl) and restricted high-RFI (RFIplR). 8 pigs per condition except for RFIneg (7 pigs). One replicate per array.

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