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- Title
Cardioprotection: spotlight on PKG.
- Authors
Cohen, M. V.; Downey, J. M.
- Abstract
Classical ischaemic preconditioning, delayed or second window preconditioning and postconditioning are forms of cardioprotection that are dependent on cell surface receptors, intracellular signalling molecules and kinases that ultimately block formation of the mitochondrial permeability transition. The latter is presumed to cause myocardial necrosis as well as apoptosis, so prevention of its formation upon resumption of perfusion after a prolonged coronary occlusion should be cardioprotective. In all of these forms of cardioprotection, formation of cGMP and activation of protein kinase G (PKG) are recognized to be key steps in the signal transduction pathway. Burley et al. highlight the roles of cGMP and PKG in their comprehensive review. They describe the basic biology of PKG and emphasize its compartmentalization, which may be responsible for the frustration induced by assays for PKG in whole cell lysates and for the spurious conclusions about the role of PKG in cardioprotection. This review will be useful to both the novice and the seasoned investigator.British Journal of Pharmacology (2007) 152, 833–834; doi:10.1038/sj.bjp.0707453; published online 17 September 2007
- Subjects
CELL receptors; MOLECULES; PROTEINS; MITOCHONDRIA; PERFUSION; ARTERIAL occlusions
- Publication
British Journal of Pharmacology, 2007, Vol 152, Issue 6, p833
- ISSN
0007-1188
- Publication type
Article
- DOI
10.1038/sj.bjp.0707453