Nitroxyl progenitors in the treatment of heart failure
Administration of an HNO/NO − donating compound, such as Angeli's salt, increases myocardial contractility while concomitantly lowering left ventricular preload in subjects experiencing heart failure Moreover, administration of the HNO/NO − donating compound isopropylamine (IPA)/NO (Na(CH 3 ) 2 CHNHN(O)NO) surprisingly exhibited positive inotropic effects in subjects experiencing heart failure that were superior to those caused by the HNO/NO − donating compound Angeli's salt. Additionally, in contrast to the effects observed with NO − donors, administration of an HNO/NO − donor in combination with a positive inotropic agent did not impair the positive inotropic effect of the positive inotropic agent Further, HNO/NO − exerts its positive inotropic effect independent of the adrenergic system, increasing contractility even in subjects receiving beta-antagonist therapy
1. A method of treating heart failure comprising:
administering to a subject experiencing heart failure, a therapeutically effective dose of at least one nitroxyl donating compound and at least one positive inotropic compound, wherein the dose is effective to increase myocardial contractility.
2. The method of claim 1 , wherein the positive inotropic compound comprises a beta-adrenergic receptor agonist.
3. The method of claim 2 , wherein the beta-adrenergic receptor agonist comprises a selective beta-1 adrenergic receptor agonist.
4. The method of claim 3 , wherein the selective beta-1 adrenergic receptor agonist comprises dobutamine.
5. The method of claim 2 , wherein the beta-adrenergic receptor agonist comprises dopamine or isoproterenol.
6. The method of claim 2 , wherein the beta-adrenergic receptor agonist comprises a selective beta-2 adrenergic receptor agonist.
7. The method of claim 2 , wherein the beta-adrenergic receptor agonist comprises an agonist not selective for a particular beta-adrenergic receptor.
8. The method of claim 1 , wherein the nitroxyl donating compound comprises a compound having the formula
wherein J is an organic or inorganic moiety, M +x is a pharmaceutically acceptable cation, wherein x is the valence of the cation, a is 1 or 2, b and c are the smallest integers that result in a neutral compound, and wherein the compound releases the nitroxyl under physiological conditions.
9. The method of claim 8 , wherein the nitroxyl donating compound comprises IPA/NO.
10. The method of claim 8 , wherein the nitroxyl donating compound comprises a derivative or analog of IPA/NO.
11. The method of claim 8 , wherein the nitroxyl donating compound comprises Angeli's salt.
12. The method of claim 1 , wherein the nitroxyl donating compound comprises Piloty's acid.
13. A method of treating heart failure comprising:
administering to a subject experiencing heart failure, a therapeutically effective dose of at least one nitroxyl donating compound, wherein the nitroxyl donating compound comprises a compound having the formula
wherein J is an organic or inorganic moiety, M 30 x is a pharmaceutically acceotable cation, wherein x is the valence of the cation, a is 1 or 2, b band c are the smallest integers that result in a neutral compound, and wherein the comoound releases the nitroxyl under physiological conditions, and wherein the nitroxyl donating compound comprises IPA/NO.
14. A method of treating heart failure comprising:
administering to a subject experiencing heart failure, a therapeutically effective dose of at least one nitroxvl donating compound, wherein the nitroxyl donating compound comprises Piloty's acid.
15. A method of treating heart failure comprising:
administering to a subject experiencing heart failure and receiving beta-adrenergic receptor antagonist therapy, a therapeutically effective dose of at least one nitroxyl donating compound, wherein the dose is effective to increase invocardial contractility, wherein the nitroxvl donating compound comprises a compound having the fomiula
wherein J is an organic or inorganic moiety, M 30 x is a pharmaceutically acceptable cation, wherein x is the valence of the cation, a is 1 or 2, b and c are the smallest integers that result in a neutral compound, and wherein the compound releases the nitroxyl under physiological conditions, and wherein the nitroxyl donating compound comprises IPA/NO.
16. A method of treatina heart failure comorising:
administering to a subject experiencing heart failure and receiving beta-adreneraic receptor antagonist therapy, a therapeutically effective dose of at least one nitroxyl donating compound, wherein the dose is effective to increase myocardial contractility, and wherein the nitroxyl donating compound comprises Piloty's acid.