Project description:Male Sprague-Dawley rats were used to establish exhausted-exercise model by motorized rodent treadmill. Yu-Ping-Feng-San at doses of 2.18 g/kg was administrated by gavage before exercise training for 10 consecutive days. Quantitative proteomics was performed for assessing the related mechanism of Yu-Ping-Feng-San.
Project description:Strenuous exercise increases the risk of atrial fibrillation, while moderate physical activity has been suggested to decrease its risk, Data from animal models suggest that intensive exercise, but not moderate training, increases atrial fibrosis and could be on the basis of the increased atrial fibrillation risk. The impact of the transition from moderate to strenuous exercise on atrial fibrillation risk and its underlying mechanisms remain poorly understood. We aimed to analyze biatrial remodeling after moderate and strenuous exercise. We conducted an RNA microarray of right and left atria of sedentary, mdoeratel-trained, and intensively-trained rats to uncover the mechanisms leading to atrial fibrosis in intensively trained rats.
Project description:Rats underwent surgery for LAD ligation for 30 min followed by reperfusion. Heart ventricles were collected 2d or 7d after reperfusion. Experiment Overall Design: rats were divided in following groups that underwent LAD occlusion or not (SHAM): Experiment Overall Design: 1. 7d-IR (n=3) Experiment Overall Design: 2. 7d-sham (n=3) Experiment Overall Design: 3. 2d-IR (n=3) Experiment Overall Design: 4. 7d-sham (n=3)
Project description:Rats underwent surgery for LAD ligation for 30 min followed by reperfusion. Heart ventricles were collected 2d or 7d after reperfusion. Keywords: rat heart ventricles, LAD - left anterior descending coronary artery, IR - ischemia-reperfusion
Project description:Physical exercise training is a known protective factor against cardiovascular morbidity and mortality. Nevertheless, the underlying specific molecular mechanisms still remain uncompletely explored. To identify molecular mechanisms by which exercise training induces this favorable phenotype a genomic approach was used in an animal model of mild exercise previously demonstrated by our group to induce cardioprotection. Our data indicate that mild exercise by inducing no or few permanent changes in gene expression profile is able to determine cardioprotection without induction of cardiac hypertrophy. Experiment Overall Design: We investigated the gene expression profile by Affymetrix technology (230 2.0 GeneChip rat genome array) induced by mild exercise training (treadmill running: 25 m/min, 10% incline, 1 h/day, 3 days/week, 10 weeks) on left ventricle (LV) of exercise-trained (n=10) and sedentary control (n=10) rats.
