Project description:Human left ventricular free wall heart tissue was obtained from end-stage heart failure patients at the moment of heart transplantation Left ventricular free wall samples were also obtained from healthy hearts of organ donors, which were not used for transplantation due to size mismatch with available recipients.
Project description:Human left ventricular free wall heart tissue was obtained from end-stage heart failure patients at the moment of heart transplantation
Project description:A porcine microarray study of acute right ventricular failure due to coronary artery ligation of the right ventricular free wall. 1. Baseline sample from the free right ventricular wall. 2. Ligation of the coronary arteries on the right ventricular free wall induced right ventricular heart failure. When the pressure in the right atrium rose to >20 mmHg, heart failure samples were taken from the free right ventricular wall.
Project description:Canine tachycardia-induced cardiomyopathy caused by several weeks of rapid ventricular pacing is a well-established animal model of congestive heart failure. However, little is known about the underlying changes in gene expression that occur in the canine myocardium after the induction of heart failure. This project aims to compare expression profiles in left ventricular free wall samples from control dogs and dogs with pacing-induced heart failure on the custom MuscleChip. Keywords: other
Project description:The Myocardial Applied Genomics Network (MAGNet; www.med.upenn.edu/magnet), collects and banks human cardiac tissue for genomic research. All subjects or next of kin provided written informed consent for tissue donation and analyses and all study protocols were approved by relevant institutional review boards. Left ventricular free-wall tissue was harvested at the time of cardiac surgery from subjects with heart failure undergoing transplantation and from unused donor hearts with apparently normal function. The heart was perfused with cold cardioplegia prior to cardiectomy to arrest contraction and prevent ischemic damage, and tissue specimens were frozen in liquid nitrogen.
Project description:To investigate the physiological characteristics of cardiac fibroblasts (CF) from pediatric dilated cardiomyopathy (DCM) patients, CFs were harvested from left ventricular free wall at the heart transplantation. We then performed RNA-seq for 7 different lines of CFs.
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.
Project description:To investigate molecular profiles of progressive heart failure, we studied mice that lack expression of the muscle LIM protein (MLPKO). These mice showed dramatic HF progression between three and six weeks of age. We then performed gene expression profile analysis using data obtained from RNA-seq of mid wall left ventricular heart tissue from MLPKO mice and wild-type (WT) controls at three, six, and ten weeks of age (n=3 per group).
Project description:We created a fetal lamb model of hypoplastic left heart syndrome (HLHS), by implanting coils in the left atrium in mid-gestation. We performed bulk RNA sequencing of left ventricles (LV), right ventricles (RV), ascending aortae (AAo) and pulmonary arteries (PA). Single nucleus RNA sequencing was performed on LV free wall tissue (n = 4 coiled samples, n = 3 controls).
