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Theobromine and theophylline

J Timson

    Mutation Research
    |January 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    Theobromine and theophylline, found in popular beverages, can cause chromosome abnormalities and inhibit cell division in various organisms. Mammalian cells show less mutagenic response due to efficient demethylation.

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    Area of Science:

    • Pharmacology and Toxicology
    • Genetics and Molecular Biology

    Background:

    • Theobromine and theophylline are naturally occurring compounds found in widely consumed beverages.
    • Most of the population is exposed to these methylxanthines through dietary intake.

    Purpose of the Study:

    • To investigate the genotoxic and anti-mitotic effects of theobromine and theophylline.
    • To explore the differential mutagenic activity in various organisms and its underlying mechanisms.

    Main Methods:

    • Review of existing literature on theobromine and theophylline's effects.
    • Analysis of structure-activity relationships concerning methylation patterns.
    • Comparison of mutagenicity and anti-mitotic activity across different species (e.g., E. coli, mammalian cells).

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    Main Results:

    • Both theobromine and theophylline induce chromosome abnormalities and exhibit anti-mitotic activity in plant and mammalian cells.
    • These compounds are potent mutagens in lower organisms like E. coli but show limited mutagenicity in mammals.
    • Mammalian demethylation of these compounds may explain the reduced mutagenic potential compared to E. coli.

    Conclusions:

    • Theobromine and theophylline possess significant genotoxic and anti-mitotic properties.
    • Methylation at position 1 is crucial for mutagenic and anti-mitotic effects, while position 3 methylation influences chromosomal action.
    • Differential metabolic pathways, particularly demethylation, contribute to species-specific responses to these methylxanthines.