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: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.
Project description:We created a rat renal congestion model and investigated the effect of renal congestion on hemodynamics and molecular mechanisms. The inferior vena cava (IVC) between the renal veins was ligated by suture in male Sprague-Dawley rats to increase upstream IVC pressure and induce congestion in the left kidney only. Left kidney congestion reduced renal blood flow, glomerular filtration rate, and increased renal interstitial hydrostatic pressure. Tubulointerstitial and glomerular injury and medullary thick ascending limb hypoxia were observed only in the congestive kidneys. Molecules related to extracellular matrix expansion, tubular injury, and focal adhesion were upregulated in microarray analysis. Renal decapsulation ameliorated the tubulointerstitial injury. Electron microscopy captured pericyte detachment in the congestive kidneys. Transgelin and platelet-derived growth factor receptors, as indicators of pericyte-myofibroblast transition, were upregulated in the pericytes and the adjacent interstitium. With the compression of the peritubular capillaries and tubules, hypoxia and physical stress induce pericyte detachment, which could result in extracellular matrix expansion and tubular injury in renal congestion.