Dataset Information

Expression data from mouse heart after aortic binding surgery for 2 weeks

ABSTRACT: We found that tmbim1 is decreased in heart samples from patients with heart failure and in heart tissues from mice with aortic banding (AB)-induced cardiac hypertrophy. Furthermore, deleting Tmbim1 aggravates the AB-induced cardiac hypertrophy. To investigate the potential mechanism by which tmbim1 regulates cardiac hypertrophy, we treated wild type and tmbim1 knockout mice with aortic binding surgery for 2 weeks, and performed microarray to identify the expression pattern and the potential important targets. We used microarrays to detect the global gene expression in the hearts of wild type and Tmbim1 knockout mice after treatment with aortic binding surgery for 2 weeks and identified distinct classes of altered genes

ORGANISM(S): Mus musculus

PROVIDER: GSE96038 | GEO | 2020/03/04

REPOSITORIES: GEO

ACCESS DATA

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Project description:Aims: We investigate sex differences and the role of oestrogen receptor beta (ERbeta) in a mouse model of pressure overload-induced myocardial hypertrophy. Methods and results: We performed transverse aortic constriction (TAC) or sham surgery in male and female wild-type (WT) and ER knockout (ERbeta-/-) C57Bl6 mice. All mice were characterised by echocardiography and haemodynamic measurements and were sacrificed nine weeks after surgery. Left ventricular (LV) samples were analysed by microarray profiling, real-time RT-PCR and histology. After nine weeks, WT males showed more hypertrophy and heart failure signs than WT females. Notably, WT females developed a concentric form of hypertrophy, while males developed eccentric hypertrophy. These sex differences were abolished in ERbeta-/- mice. ERbeta deletion augmented the TAC-induced increase in cardiomyocyte diameter in both sexes. Gene expression profiling revealed that male WT hearts had a stronger induction of matrix-related genes and a stronger repression of mitochondrial genes than female hearts. ERbeta-/- mice exhibited a different transcriptome. Induction of pro-apoptotic genes after TAC occurred in ERbeta-/- mice of both sexes with a stronger expression in ERbeta-/- males. Histological analysis revealed, that cardiac fibrosis was more pronounced in male WT TAC than in female mice. This was abolished in ERbeta-/- mice. Apoptosis was significantly induced in both sexes of ERbeta-/- TAC mice, but it was most prominent in males. Conclusion: Female sex offers protection against ventricular chamber dilation in the TAC model. Both the female sex and ER attenuate the development of fibrosis and apoptosis; thus slowing the progression to heart failure. The influence of sex (male/female) and estrogen receptor beta expression (ERbeta knockout/wildtype) on cardiac hypertrophy (transverse aortic constriction/sham operated) was investigated. The left ventricular transcriptome of four individual mice for each combination of the three factors (sex, genotype, surgery) was detected with Affymetrix RAE 430 2.0 GeneChip arrays.

Dataset Information

Expression data from mouse heart after aortic binding surgery for 2 weeks

Dataset's files

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets