Journal
CARDIOVASCULAR RESEARCH
Volume 70, Issue 2, Pages 231-239Publisher
OXFORD UNIV PRESS
DOI: 10.1016/j.cardiores.2005.10.021
Keywords
carbon monoxide; cardioprotection; natriuretic peptide; nitric oxide; phosphodiesterase inhibitor; preconditioning; statin
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ischemic preconditioning is a powerful infarct-sparing intervention. Intensive investigations have revealed many of the signaling steps used to elicit this protection. One of the steps involves activation of nitric oxide synthase (NOS) by phosphorylation, with the production of NO and subsequent activation of guanylyl cyclase, production of cGMP, activation of protein kinase G, opening of mitochondrial K-ATP channels, and generation of reactive oxygen species. The latter act as second messengers to activate critical kinase cascades that trigger entrance into the preconditioned state. Thus, NO exposure before ischemia can act as a powerful preconditioning mimetic. Elevating NO just prior to or at reperfusion can still be an effective cardioprotective strategy. Activation of NOS or production of NO can be done pharmacologically with exogenous agents to trigger this cascade. Many of these strategies are already available and safe. (c) 2005 European Society of Cardiology. Published by Elsevier B.V. All rights reserved.
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