Doxorubicin induced heart failure: Phenotype and molecular mechanisms

Doxorubicin induced heart failure: Phenotype and molecular mechanisms

Long term survival of childhood cancers is now more than 70%. Anthracyclines, including doxorubicin, are some of the most efficacious anticancer drugs available. However, its use as a chemotherapeutic agent is severely hindered by its dose-limiting toxicities. Most notably observed is cardiotoxicity, but other organ systems are also degraded by doxorubicin use. Despite the years of its use and ...

Erythropoietin protects against doxorubicin-induced heart failure.

The hormone erythropoietin (EPO) has been demonstrated to have cardioprotective properties. The present study investigates the role of EPO to prevent heart failure following cancer treatment with doxorubicin [adriamycin (AD)]. Male Wistar rats (150 ± 10 g) were treated with saline (vehicle control group); with EPO, subcutaneously at 1,000 IU/kg body wt, three times per week for 4 wk (EPO group)...

Molecular Mechanisms of Myocardial Hypertrophy and Heart Failure

"vasodilator effects of β-agonist isoprenaline in doxorubicin-induced model of heart failure "

we investigated the vasodilatory effect of isoprenaline at large vessels (aorta, renal ans saphenous arteries, vena cava, renal and saphenous veins) in doxorbicin-induced model of heart failure. thirty saline-treated (normal group) and thirty doxorubicin treated rabbits (1 mg/kg administered intravenously twice weekly for 8 weeks) were studied after 16 weeks of treatment. chronic heart failure ...

Molecular mechanisms underlying K+ current downregulation in canine tachycardia-induced heart failure.

Heart failure (HF) is characterized by marked prolongation of action potential duration and reduction in cellular repolarization reserve. These changes are caused in large part by HF-induced K(+) current downregulation. Molecular mechanisms underlying these changes remain unclear. We determined whether downregulation of K(+) currents in a canine model of tachycardia-induced HF is caused by alte...