Abstract: The instant invention provides methods and compositions for the treatment of cardiac dysfunction. Specifically, the invention provides methods and compositions for modulating Arginase II for the treatment of cardiac dysfunction.

Abstract: A reactive oxygen generating enzyme inhibitor with NO donor bioactivity, e.g., nitrated allopurinol, is useful to treat heart failure, stable angina, ischemic disorder, ischemic reperfusion injury, atherosclerosis, sickle cell disease, diabetes, Alzheimer's disease, Parkinson's disease, ALS and asthma and to obtain proper contraction of heart, skeletal and smooth muscle.

Abstract: Blockade of stromal derived factor-1 (SDF-1), a stem cell mobilizer and/or its receptor, chemokine receptor 4 (CXCR4) attenuates and reverses hypoxia-induced cardiopulmonary remodeling in vivo. Compositions for treating hypoxia-induced cardiovascular disorders modulate the SDF-1/CXCR4 axis.

Abstract: A method of preparing a gene expression prediction profile for distinguishing ischemic and nonischemic cardiomyopathy comprises the steps of obtaining clinical specimens from patients suffering from ischemic or nonischemic cardiomyopathy, isolating nucleic acid sequences from at least a plurality of said specimens, obtaining a gene expression level corresponding to each individual of said nucleic acid sequence by a gene expression profiling method, identifying genes having differences in gene expression by comparing the gene expression level of an ischemic specimen with the gene expression level of a nonischemic specimen, and identifying a gene expression prediction profile comprises genes identified as having differences in gene expression so that said prediction profile distinguishes ischemic and nonischemic cardiomyopathy.

Abstract: A reactive oxygen generating enzyme inhibitor with NO donor bioactivity, e.g., nitrated allopurinol, e.g., 1,5-bis(3-nitrooxypropyyl)-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidine-4-one is useful to treat heart failure, stable angina, ischemic disorder, ischemic reperfusion injury, atherosclerosis, sickle cell disease, diabetes, Alzheimer's disease, Parkinson's disease, ALS and asthma and to obtain proper contraction of heart, skeletal and smooth muscle. Where the disorder is heart failure, administration of the enzyme inhibitor mediates amelioration of acute coronary symptoms and/or myocardial infarction.