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The nitrate esters isosorbide dinitrate (Isordil) and isosorbide mononitrate (Imdur, Ismo, Monoket, Mononitron) are converted in the body to nitric oxide, a potent natural vasodilator. In medicine, these esters are used as a medicine for angina pectoris (ischemic heart disease).
Isosorbide mononitrate, sold under many brand names, is a medication used for heart-related chest pain , heart failure and esophageal spasms. [2] It can be used both to treat and to prevent heart-related chest pain; however, it is generally less preferred than beta blockers or calcium channel blockers. [2] It is taken by mouth. [2]
Isosorbide dinitrate is a medication used for heart failure, esophageal spasms, and to treat and prevent chest pain from not enough blood flow to the heart. [1] It has been found to be particularly useful in heart failure due to systolic dysfunction together with hydralazine .
By nitration of isosorbide with concentrated nitric acid, 2,5-isosorbide dinitrate (ISDN) can be obtained. 2,5-isosorbide dinitrate is suitable (just like its major metabolite 5-isosorbide mononitrate, ISMN [6]) for the treatment of angina pectoris due to its vasodilator effect. [7]
Nitrovasodilators are contraindicated under circumstances where lowering of blood pressure can be dangerous. This includes, with some variation between the individual substances, severe hypotension (low blood pressure), shock including cardiogenic shock, and anaemia.
Nitrosylation results in a molecule "R" adducted with the group N=O. Nitrosation and nitrosylation are two names for the process of converting organic compounds or metal complexes [1] into nitroso derivatives, i.e., compounds containing the R−NO functionality.
Nitroglycerin belongs to a group of drugs called nitrates, which includes many other nitrates like isosorbide dinitrate (Isordil) and isosorbide mononitrate (Imdur, Ismo, Monoket). [35] These agents all exert their effect by being converted to nitric oxide in the body by mitochondrial aldehyde dehydrogenase ( ALDH2 ), [ 8 ] and nitric oxide is ...
Originally suggested by Ignarro to serve as intermediates in the action of organic nitrates, endogenous S-nitrosothiols were discovered by Stamler and colleagues (S-nitrosoalbumin in plasma and S-nitrosoglutathione in airway lining fluid) and shown to represent a main source of NO bioactivity in vivo.
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