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Related Experiment Videos

Ether does not antagonize bronchoconstriction caused by acetylcholine, histamine, or phenylephrine.

P Neill1, J W Sleigh

  • 1Department of Clinical Pharmacology, Godfrey Huggins School of Medicine, Avondale, Harare, Zimbabwe.

Anesthesia and Analgesia
|August 1, 1989
PubMed
Summary

Ether did not antagonize mediator-induced bronchoconstriction in baboons. Intravenous ether showed no effect against acetylcholine, histamine, or phenylephrine, even with propranolol.

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Area of Science:

  • Pharmacology
  • Respiratory Physiology
  • Anesthesiology

Background:

  • Bronchoconstriction is a narrowing of the airways.
  • Mediators like acetylcholine and histamine can cause bronchoconstriction.
  • Ether is sometimes used in anesthesia and its potential effects on airways are of interest.

Purpose of the Study:

  • To investigate the potential of ether as an antagonist for mediator-induced bronchoconstriction.
  • To determine if ether could block airway narrowing caused by specific chemical mediators.

Main Methods:

  • Eight anesthetized, paralyzed, and mechanically ventilated baboons were used.
  • Ether was administered intravenously.
  • Bronchoconstriction was induced by intravenous administration of acetylcholine, histamine, or phenylephrine.

Related Experiment Videos

  • The effects were tested with mediators alone and in combination with propranolol.

    • Main Results:

    • Intravenous ether administration did not alter bronchoconstriction.
    • No antagonistic effect of ether was observed against acetylcholine, histamine, or phenylephrine.
    • The combination of ether and propranolol also failed to prevent mediator-induced bronchoconstriction.

    Conclusions:

    • Ether does not appear to antagonize mediator-induced bronchoconstriction in this animal model.
    • These findings suggest ether lacks bronchodilatory properties against common bronchoconstrictor agents.
    • Further research may be needed to explore other potential respiratory effects of ether.