Opening of K(ATP) channels is mandatory for acquisition of ischemic tolerance by adenosine

Ayelet Reshef, Oded Sperling, Esther Zoref-Shani*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Binding of adenosine to neuronal adenosine receptors activates a signal transduction pathway (the adenosine mechanism), leading to a temporary ischemic tolerance. We have demonstrated before the induction of this mechanism in primary rat neuronal cultures, by activation of adenosine receptors, or by activation of protein kinase C (PKC), confers a wide time window of ischemic tolerance, lasting up to 72h, the early (immediate) part of which depends on opening of K(ATP) channels (glibenclamide sensitive). Here we demonstrate that the entire duration of the ischemic tolerance conferred by activation of the adenosine mechanism depends on opening of the K(ATP) channels. Thus, opening of the K(ATP) channels appears to be a mandatory step in the adenosine mechanism, leading to the creation of the wide time of ischemic tolerance. (C) 2000 Lippincott Williams and Wilkins.

Original languageEnglish
Pages (from-to)463-465
Number of pages3
JournalNeuroReport
Volume11
Issue number3
DOIs
StatePublished - 2000

Keywords

  • 1,2 Dioctanoyl-rac-glycerol (DOG)
  • ATP-sensitive potassium (K(ATP)) channels
  • Adenosine
  • Cromakalim
  • Glibenclamide
  • Ischemic tolerance
  • N-(R)- phenylisopropyladenosine (R-PIA)
  • Neuronal cultures

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