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Preconditioning in Human Muscle and Myocytes

  • Cornelia S. Carr
  • Derek M. Yellon
Chapter
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Part of the Developments in Cardiovascular Medicine book series (DICM, volume 194)

Abstract

When the heart is subjected to brief periods of sublethal ischemia separated by reperfusion it becomes resistant to a more prolonged lethal ischemic insult, a phenomenon which has been shown to protect it against infarction, reperfusion arrhythmias, contractile dysfunction and contracture.1-4 This endogenous protective mechanism has been termed ischemic preconditioning,1 and appears to occur in all animal species studied,2,5-7 including man.8,9 The protection produced by ischemic preconditioning is very potent but is short lived and decreases with time, lasting for an hour in most species. However a delayed or second window of protection (SWOP) has also been observed as a consequence of ischemic preconditioning; this protection occurs many hours after the sublethal preconditioning ischemia.10-14 The underlying mechanisms via which ischemic preconditioning protects the heart have been partly characterised in both animals and in the human, and appears to involve adenosine receptor activation, protein kinase C mediation and the possible opening of ATP-dependent-potassium (KATP) channels. If the exact mechanism of preconditioning in man could be determined, then it might be possible to develop preconditioning-like pharmacological therapies for patients at risk of certain cardiovascular disorders.

Keywords

Adenosine Receptor Human Muscle Hypoxic Precondition Ischaemic Precondition Endogenous Protective Mechanism 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Cornelia S. Carr
  • Derek M. Yellon

There are no affiliations available

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