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Novel Trends in the Treatment of Cardiovascular Disorders: Site- and Event- Selective Adenosinergic Drugs

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This review focuses on the potential role of site- and event-selective adenosinergic drugs in the treatment of cardiovascular diseases. Adenosine is released from the myocardium and vessels in response to various forms of stress and acts on four receptor subtypes (A1, A2A, A2B and A3). Adenosine is an important endogenous substance with important homeostatic activity in the regulation of cardiac function and circulation. Adenosine receptors are also involved in the modulation of various cellular events playing crucial role in physiological and pathological processes of the cardiovascular system. These actions are associated to activation of distinct adenosine receptor subtypes, therefore drugs targeting specific adenosine receptors might be promising therapeutic tools in treatment of several disorders including various forms of cardiac arrhythmia, myocardial ischemia-reperfusion injury, angina pectoris, chronic heart failure, etc. Recently, in addition to subtype-specific adenosine receptor agonists and antagonists, a number of substances that enhance adenosine receptor activation locally at the site where the release of endogenous adenosine is the most intensive have been developed. Thus global actions of adenosine receptor agonists and antagonists, as well as desensitization or down-regulation following chronic administration of these orthosteric compounds can possibly be avoided. We discuss the chemical, pharmacological and clinical features of these compounds: (1) inhibitors of membrane adenosine transporters (NBTI, dipyridamole), (2) inhibitors of adenosine deaminase (coformycin, EHNA), (3) inhibitors of adenosine kinase (tubercidin, aristeromycin), (4) inhibitors of AMP deaminase (GP3269), (5) activators of 5'- nucleotidase (methotrexate), (6) adenosine regulators (acadesine) and (7) allosteric adenosine receptor modulators (PD81723, LUF6000). The development of this type of substances might offer a novel therapeutic approach for treating cardiovascular diseases in the near future.

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Keywords: 5'-nucleotidase; AMP deaminase; Cardiovascular Disorders; Site and event specific action; adenosine deaminase; adenosine kinase; adenosine regulators; adenosinergic drugs; allosteric receptor modulators; membrane adenosine transport

Document Type: Research Article

Publication date: 2011-03-01

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  • Current Medicinal Chemistry covers all the latest and outstanding developments in medicinal chemistry and rational drug design. Each issue contains a series of timely in-depth reviews written by leaders in the field covering a range of the current topics in medicinal chemistry. Current Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments.
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