Expression data from human heart right ventricular wall
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE67492 | GEO | 2015/04/02
SECONDARY ACCESSION(S): PRJNA280059
REPOSITORIES: GEO
Similar Datasets
Project description:Gene expression in the right ventricle is different in control patients as compared to either idiopathic dilated cardiomyopathy or pulmonary arterial hypertension Two human hearts obtained at autopsy from each of control, pulmonary hypertension, and dilated cardiomyopathy
2015-04-02 | E-GEOD-67492 | biostudies-arrayexpress
Project description:Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited cardiomyopathy primarily of the right ventricle characterized through fibrofatty replacement of cardiomyocytes. The genetic etiology in ARVC patients is most commonly caused by dominant inheritance and high genetic heterogeneity. Though histological examinations of ARVC affected human myocardium reveals fibrolipomatous replacement, the molecular mechanisms leading to loss of cardiomyocytes are largely unknown. We therefore analyzed the transcriptomes of 6 ARVC specimen derived from heart transplantation candidates and compared our findings to 6 non-failing donor hearts (NF) which could not be transplanted for technical reasons. In addition, we compared our findings to 7 hearts from patients with idiopathic dilated cardiomyopathy. From each heart left (LV) and right ventricular (RV) myocardial samples were analyzed by Affymetrix HG-U133 Plus 2.0 arrays, adding up to six sample groups. Unsupervised cluster analyses of the six sample groups revealed a clear separation of NF and cardiomyopathy samples. However, in contrast to the other samples, unsupervised cluster analyses revealed no distinct expression pattern in LV and RV samples from ARVC-hearts. We further identified differentially expressed transcripts using t-tests and found transcripts separating diseased and NF ventricular myocardium. Of note, in failing myocardium only about 15-16% of the genes are commonly regulated compared to NF samples. In addition both cardiomyopathies are clearly distinct on the transcriptome level. Comparison of the expression patterns between the failing RV and LV using a paired t-test revealed a lack of major differences between LV and RV gene expression in ARVC hearts. Microarrays were used to elucidate the differences between non-failing control hearts and those, suffering from arrhythmogenic right ventricular cardiomyopathy (ARVC).
2011-11-30 | E-GEOD-29819 | biostudies-arrayexpress
Project description:Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited cardiomyopathy primarily of the right ventricle characterized through fibrofatty replacement of cardiomyocytes. The genetic etiology in ARVC patients is most commonly caused by dominant inheritance and high genetic heterogeneity. Though histological examinations of ARVC affected human myocardium reveals fibrolipomatous replacement, the molecular mechanisms leading to loss of cardiomyocytes are largely unknown. We therefore analyzed the transcriptomes of 6 ARVC specimen derived from heart transplantation candidates and compared our findings to 6 non-failing donor hearts (NF) which could not be transplanted for technical reasons. In addition, we compared our findings to 7 hearts from patients with idiopathic dilated cardiomyopathy. From each heart left (LV) and right ventricular (RV) myocardial samples were analyzed by Affymetrix HG-U133 Plus 2.0 arrays, adding up to six sample groups. Unsupervised cluster analyses of the six sample groups revealed a clear separation of NF and cardiomyopathy samples. However, in contrast to the other samples, unsupervised cluster analyses revealed no distinct expression pattern in LV and RV samples from ARVC-hearts. We further identified differentially expressed transcripts using t-tests and found transcripts separating diseased and NF ventricular myocardium. Of note, in failing myocardium only about 15-16% of the genes are commonly regulated compared to NF samples. In addition both cardiomyopathies are clearly distinct on the transcriptome level. Comparison of the expression patterns between the failing RV and LV using a paired t-test revealed a lack of major differences between LV and RV gene expression in ARVC hearts.
2011-11-30 | GSE29819 | GEO
Project description:Arterial pulmonary hypertension is a rare disease, with little knowledge regarding its etiology, and high mortality. Development of right and later on also left ventricular heart insufficiency, secondary to pulmonary hypertension, is a negative predictive factor. Genetic and molecular processes underlying left heart ventricle remodeling over the course of pulmonary hypertension remain unknown. In particular, there is no knowledge regarding the mechanisms of left heart ventricle atrophy which was completely avoided by researchers until recently.The aim of this study was to assess changes in protein abundance in left and right heart ventricle free wall of rats in monocrotaline model of PAH.
2020-09-07 | PXD015896 | Pride
Project description:We found that β-arrestin 1 -/- mice were more sensitive to hypoxia-induced pulmonary arterial hypertension with increased right ventricle hypertrophy and higher right ventricle systolic pressure, while β-arrestin 2 -/- mice developed right ventricle hypertrophy comparable to wild type mice. Moreover, β-arrestin 1 -/- mice had worse right ventricle function than wild type mice in response to chronic hypoxia, whereas β-arrestin 2 -/- mice relatively preserved right ventricle function compared to wild type mice. To investigate the molecular mechanisms responsible for the worse PAH in β-arrestin 1 -/- mice, we performed lung transcriptome analysis of wild type, β-arrestin 1 -/-, and β-arrestin 2 -/- mice using high-throughput RNA-seq.
2018-11-19 | GSE110131 | GEO
Project description:The right ventricle (RV) differs in several aspects from the left ventricle (LV) including its embryonic origin, physiological role and anatomical design. In contrast to LV hypertrophy, little is known about the molecular circuits, which are activated upon RV hypertrophy (RVH). We established a highly reproducible model of RVH in mice using pulmonary artery clipping (PAC), which avoids detrimental RV pressure overload and thus allows long-term survival of operated mice. Magnetic resonance imaging revealed pathognomonic changes with striking similarities to human congenital heart disease- or pulmonary arterial hypertension- patients. Comparative, microarray based transcriptome analysis of right- and left-ventricular remodeling identified distinct transcriptional responses to pressure-induced hypertrophy of either ventricle, which were mainly characterized by stronger transcriptional responses of the RV compared to the LV myocardium. Hierarchic cluster analysis revealed a RV- and LV-specific pattern of gene activity after induction of hypertrophy, however, we did not find evidence for qualitatively distinct regulatory pathways in RV compared to LV. Data mining of nearly three thousand RV-enriched genes under PAC disclosed novel potential (co)-regulators of long-term RV remodeling and hypertrophy. We reason that specific inhibitory mechanisms in RV restrict excessive myocardial hypertrophy and thereby contribute to its vulnerability to pressure overload. Alternative splicing and gene expression analysis during development of the heart and cardiomyoyte differentiation.
2011-07-07 | E-GEOD-30428 | biostudies-arrayexpress
Project description:It has been reported that repeated intra-tracheal instillation of S. chartarum spores induced significant pulmonary arterial remodeling in mice, which resulted in pathological changes like human pulmonary arterial hypertension (PAH) and elevation right ventricle systolic pressure. Then, we used microarrays to know the complex molecular mechanisms that underlie pathogenesis of PAH.
2010-07-29 | GSE23178 | GEO
Project description:LRAT knockout mice on vitamin A sufficient or deficient diets were compared to age-matched wild type mice on a vitamin A sufficient diet RNA was isolated from right ventricle of the heart and one array was run for each sample.
2016-07-25 | E-GEOD-74905 | biostudies-arrayexpress
Project description:Pulmonary vascular occlusions due to thromboemboli can result in pulmonary hypertension and right heart damage. Treatments to clear the vascular obstructions such as i.v. heparain or thrombolytics can resolve the hypertension but right ventricular damage often occurs first. Methods of protecting the right ventricle from hypertensive damage during the course of acute treatment to clear the thromboemboli are needed. Monocyte- and neutrophil-mediated inflammation and fibrosis are associated with chronic right ventricular damage but the pathways involved are not understood. A comprehesive survey of gene expression during chronic pulmonary embolism verses control rats has been conducted in this study.
2009-09-01 | GSE11851 | GEO
Project description:Right ventricular (RV) failure plays a critical role in any type of heart failure. However, there is no specific therapy developed for RV failure. To understand RV failure, we focused on the RV specific genes. Global gene expression analysis showed that alternative complement pathway-related genes including C3 and Cfd were significantly upregulated in right ventricle in murine heart. We generated the RV failure by right ventricle-specific pressure overload model mice, pulmonary artery constriction (PAC), which induces RV failure around 14 days. In C3 knockout (C3KO) mice, PAC-induced RV dysfunction and fibrosis were significantly attenuated. C3a is produced from C3 by C3 convertase complex including Cfd. Cfd knockout mice also attenuated PAC-induced RV failure. Moreover, C3a receptor (C3aR) antagonist dramatically improved PAC-induced RV dysfunction in wild type mice. Here we revealed the crucial role of C3-Cfd-C3a-C3aR axis in RV failure and highlight the potential therapeutic target for RV failure with no pharmacologic option.
2021-09-07 | GSE183504 | GEO