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Comparison of exercise and pregnancy-induced cardiac hypertrophy

ABSTRACT: Comparative analysis of mouse cardiac left ventricle gene expression: voluntary wheel exercise and pregnancy-induced cardiac hypertrophy

ORGANISM(S): Mus musculus

PROVIDER: GSE36330 | GEO | 2012/03/08

SECONDARY ACCESSION(S): PRJNA153379

REPOSITORIES: GEO

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Comparison of exercise and pregnancy-induced cardiac hypertrophy

Project description:Comparative analysis of mouse cardiac left ventricle gene expression: voluntary wheel exercise and pregnancy-induced cardiac hypertrophy We performed microarray analysis on RNA from left ventricles of mice in non-pregnant diestrus cycle, mid-pregnancy (MP), late-pregnancy (LP), and immediate post-partum (0PP). These were compared to 7days (7EX) and 21 days (21EX) of voluntary wheel running exercise.

2012-03-08 | E-GEOD-36330 | biostudies-arrayexpress

Effects of voluntary exercise in rat aorta

Project description:Effects of voluntary exercise in rat aorta. Spontaneously hypertensive rats (SHR) performed 5 weeks of voluntary exercise (wheel-cage running). Aortic tissue was collected and samples were pooled (3 aortae/chip). Aortae from running rats were compared to aortae from non-running rats. Keywords: parallel sample

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Transcription profiling of rat aorta samples from rats undergoing voluntary exercise

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MicroRNAs in an Experimental Model of Physiologic Left Ventricular Hypertrophy: a Microarray-based Analysis

Project description:BACKGROUND - MicroRNAs (miRs) are a class of small non-coding RNAs that regulate gene expression. Transgenic models have proved that a single miR can induce pathological cardiac hypertrophy and failure. The roles of miRs in the genesis of physiologic left ventricular hypertrophy (LVH), however, are not well elucidated. OBJECTIVE - To evaluate miRs expression in an experimental model of exercise-induced LVH. METHODS - Male Balb/c mice were divided into sedentary (SED) and exercise (EXE) groups. Voluntary exercise was performed in odometer-monitored metal wheels during 35 days. Analyses were performed after 7 and 35 days of training, and consisted of transthoracic echocardiography, maximal exercise test, miRs microarray (miRBase v.16) and real-time qRT-PCR analysis. RESULTS - Left ventricular weight/body weight ratio increased by 7% in the EXE group at day 7 (p<0.01) and by 11% at 35 days of training (p<0.001) After 7 days of training, microarray identified 35 deregulated miRs: 20 had an increase in their expression and 15 were down-regulated (p=0.01). At day 35 of training, 25 miRs were deregulated: 15 were up-regulated and 10 had decreased their expression compared to the SED group (p<0.01). qRT-PCR confirmed an increase in miR-150 levels at both time points and a decrease in miR-26b, miR-27a and miR-143 after 7 days of voluntary exercise. CONCLUSIONS M-bM-^@M-^S We unraveled new miRs that can modulate physiological cardiac hypertrophy, particularly miR-26b, -150, 27a and -143. Our data also indicate that previously established regulatory gene pathways involved in pathological LVH are not deregulated in physiologic LVH. Experimental model of left ventricular hypertrophy induced by voluntary exercise Male Balb/c mice, 8-10 weeks old, 4 groups analyzed, each group consisted of a pool from 4 animals

2014-06-01 | E-GEOD-52278 | biostudies-arrayexpress

Transcriptional profile of isoproterenol-induced cardiomyopathy and comparison to exercise-induced cardiac hypertrophy

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Voluntary exercise suppresses tumor growth through exercise-directed recruitment and intratumoral infiltration of NK cells

Project description:Voluntary exercise reduces the risk of cancer and lowers the risk of disease recurrence. Yet the mechanisms for this protection remain to be elucidated. Here we demonstrate that exercise halves tumor growth through an exercise-dependent mobilization and intratumoral infiltration of NK cells in malignant melanoma. Using voluntary wheel running, we show that exercise prior to and during B16 tumor challenge reduced tumor growth by 67%, and this reduction was associated with increased inflammation and immune cell infiltrates, especially NK cells, in the tumors from exercising mice. Depletion of NK cells blunted the exercise-dependent reduction in tumor growth. Moreover, during exercise, NK cells were engaged through an epinephrine-dependent mobilization to the circulation and redistributed to peripheral tissues through an IL-6 dependent mechanism. This study highlights the importance of exercise-dependent immune regulation in the control of malignant melanoma Gene expression profile of melanoma tumor tissue from two groups of exercise and non-exercise mice

2016-07-21 | E-GEOD-62628 | biostudies-arrayexpress

Transcription profiling of rat heart ventricle samples from animals subjected to differing exercise regimes

Project description:Gene expression and phenotypic consequences of laboratory housing in rats. Disease related-phenotypes and associated gene expressions of sedentary animals (living solely in a standard cage) were compared with animals that had access to twice-weekly one-hour physical activity in a large box (PA) and with those that had access to voluntary running wheel exercise (EX). Experiment Overall Design: The left ventricle of 16 month female Sprague-Dawley rats was used for RNA extraction and hybridization on Affymetrix GeneChip Rat Genome 230 2.0 Arrays. Twelve animals from each treatment group (SED, PA, and EX) were used for microarray analysis (4 animals pooled per GeneChip).

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Transcriptome analysis of mouse cardiac hypertrophy

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Voluntary exercise suppresses tumor growth through exercise-directed recruitment and intratumoral infiltration of NK cells

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