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Ascorbic acid and pyridoxine in experimental anaphylaxis.

R G Alvarez, M G Mesa

    Agents and Actions
    |April 1, 1981
    PubMed
    Summary
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    Ascorbic acid (AA) does not show efficacy in preventing asthma symptoms. Pyridoxine, however, demonstrated inhibitory effects on histamine release in experimental models, warranting further investigation for asthma treatment.

    Area of Science:

    • Pharmacology
    • Immunology
    • Respiratory Medicine

    Background:

    • Ascorbic acid (AA) and pyridoxine have been proposed as potential treatments for bronchial asthma.
    • Existing research on the efficacy of AA for asthma is conflicting.

    Purpose of the Study:

    • To investigate the effects of ascorbic acid and pyridoxine on histamine release and experimental anaphylaxis models.
    • To evaluate the potential of these vitamins as antiasthmatic agents.

    Main Methods:

    • Testing ascorbic acid and pyridoxine in models of histamine release.
    • Assessing their impact on mast cell degranulation induced by various stimuli (phospholipase A, compound 48/80, egg albumin).
    • Evaluating experimental anaphylaxis models.

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    Main Results:

    • Ascorbic acid (AA) did not inhibit mast cell degranulation or histamine release.
    • Pyridoxine demonstrated significant inhibition of histamine release at concentrations of 10(-3)-10(-2) M in specific tests.
    • AA showed no prophylactic antiasthmatic effect comparable to disodium cromoglycate.

    Conclusions:

    • There is no current experimental evidence to support ascorbic acid as a prophylactic antiasthmatic drug.
    • Pyridoxine shows promise and requires further basic and clinical research for potential asthma treatment applications.