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Calcium channel antagonists decrease the ethanol withdrawal syndrome.

H J Little, S J Dolin, M J Halsey

    Life Sciences
    |December 1, 1986
    PubMed
    Summary
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    Calcium channel blockers effectively treated ethanol withdrawal syndrome in rats, reducing seizures and mortality without sedation. This suggests calcium conductance alterations are key to withdrawal and offers new therapeutic avenues.

    Area of Science:

    • Neuroscience
    • Pharmacology

    Background:

    • Chronic ethanol intake leads to withdrawal syndrome characterized by hyperexcitability, seizures, and mortality.
    • Current treatments for ethanol withdrawal have sedative effects and dependence liability.
    • Ethanol affects neuronal functions, including membrane calcium conductance, but the withdrawal syndrome's basis is unclear.

    Purpose of the Study:

    • To investigate the efficacy of calcium channel antagonists in treating ethanol withdrawal syndrome.
    • To explore the role of calcium conductance in ethanol withdrawal.
    • To identify potential non-sedative therapeutic agents for ethanol withdrawal.

    Main Methods:

    • Tested four calcium channel antagonists (nitrendipine, nimodipine, verapamil, flunarizine) in a rat model of ethanol withdrawal.

    Related Experiment Videos

  • Assessed effects on spontaneous seizures, audiogenic-induced seizures, mortality, and sedative activity.
  • Compared efficacy with diazepam, a standard treatment.

    • Main Results:

    • Nitrendipine and nimodipine abolished seizures and reduced mortality.
    • Verapamil and flunarizine decreased seizure incidence and mortality.
    • Dihydropyridines were more effective than diazepam for ethanol withdrawal but not pentylenetetrazol seizures.
    • Calcium channel inhibitors showed no sedative activity.

    Conclusions:

    • Alterations in calcium conductance are implicated in the ethanol withdrawal syndrome.
    • Calcium channel antagonists show promise as non-sedative treatments for ethanol withdrawal.
    • Further research into calcium channel modulation could lead to novel therapeutic strategies.