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Related Experiment Videos

Rapid histamine assays: a method and some theoretical considerations.

D Colquhoun, M L Tattersall

    British Journal of Pharmacology
    |January 1, 1970
    PubMed
    Summary

    A new automatic assay method for superfused tissues was developed. This method allows rapid and precise measurement of substances like histamine released during anaphylaxis.

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    Area of Science:

    • Pharmacology
    • Biomedical Engineering
    • Assay Development

    Background:

    • Superfusion techniques are crucial for studying isolated tissue responses.
    • Traditional methods can be time-consuming and require longer intervals between measurements.
    • Accurate and efficient assay methods are needed for pharmacological research.

    Purpose of the Study:

    • To develop an automated method for superfused tissue assays.
    • To determine the optimal interval for eliciting independent responses.
    • To evaluate the precision and selectivity of the new assay method.

    Main Methods:

    • Utilized the Autoanalyser sample turntable for automated sample handling.
    • Investigated response independence at 1-minute intervals for superfusion.
    • Compared results with conventional immersion methods.
    • Applied the method to assay histamine selectively in anaphylactic lung release.

    Main Results:

    • Developed an automatic assay method for superfused isolated tissues.
    • Established that responses are independent at 1-minute intervals, unlike conventional methods.
    • Achieved an index of precision comparable to existing superfusion techniques.
    • Demonstrated selective assay of histamine in anaphylactic guinea-pig lung material.

    Conclusions:

    • The automated superfusion assay is efficient and precise.
    • The method allows for rapid, independent measurements, suitable for dynamic processes like anaphylaxis.
    • This technique offers a reliable approach for selective histamine assays in complex biological samples.

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