Calcium channel blockers improve hypoxia/hypoglycemia-induced impairment of rat hippocampal 2-deoxyglucose uptake in vitro after ethanol withdrawal

Shigenobu Shibata, Tomomi Shindou, Keiko Tominaga, Shigenori Watanabe

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12 Citations (Scopus)

Abstract

The aim of the present study was to determine whether calcium channel antagonists attenuated hypoxia/hypoglycemia- or glutamate-induced reduction in 2-deoxyglucose (2-DG) uptake of hippocampal slices obtained from ethanol withdrawal rats. Ethanol withdrawal significantly potentiated the hypoxia/hypoglycemia- and glutamate-induced reductions in 2-DG uptake of hippocampal slices. Both nifedipine and flunarizine exhibited attenuating effects on ethanol withdrawal-induced potentiation of impairment of 2-DG uptake caused by hypoxia/hypoglycemia or glutamate. Hypoxia/hypoglycemia-induced deficit of 2-DG uptake was prevented by ethanol, but chronic consumption of ethanol resulted in the development of tolerance to neuroprotective effect. These findings suggest that the increased sensitivity of neurons to ischemic damage by ischemia may involve in the increased activity of calcium channels in the hippocampus.

Original languageEnglish
Pages (from-to)320-324
Number of pages5
JournalBrain Research
Volume673
Issue number2
DOIs
Publication statusPublished - 1995 Mar 6
Externally publishedYes

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Keywords

  • 2-Deoxyglucose
  • Chronic treatment
  • Ethanol
  • Hypoxia/hypoglycemia
  • Tolerance
  • Withdrawal syndrome

ASJC Scopus subject areas

  • Developmental Biology
  • Molecular Biology
  • Clinical Neurology
  • Neuroscience(all)

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