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Related Experiment Videos

Improved morphological techniques for screening potentially ototoxic compounds in laboratory animals

P J Astbury, N G Read

    British Journal of Audiology
    |May 1, 1982
    PubMed
    Summary

    A new scanning electron microscopy technique simplifies morphological examination of the organ of Corti for toxicological studies. This method allows for faster, quantitative damage assessment in routine safety testing.

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    Area of Science:

    • Ototoxicology
    • Scanning Electron Microscopy
    • Morphological Examination

    Background:

    • The organ of Corti is crucial for hearing and susceptible to damage from various factors.
    • Previous methods for examining the organ of Corti were time-consuming.
    • Standardized techniques are needed for routine toxicological assessments.

    Purpose of the Study:

    • To describe a simplified, rapid technique for the morphological examination of the organ of Corti.
    • To enable quantitative assessment of damage to the organ of Corti in toxicological studies.
    • To provide a method applicable to common species used in toxicity testing.

    Main Methods:

    • Dissection of critical point-dried cochleae.
    • Surface preparation of the entire organ of Corti.

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  • Examination using scanning electron microscopy (SEM).

    • Main Results:

    • The SEM technique is simpler and faster than traditional light microscopy methods.
    • Quantitative estimates of damage to the organ of Corti can be obtained.
    • The technique is detailed for two common toxicity study species and adaptable to others.

    Conclusions:

    • This SEM technique offers an efficient and effective approach for routine morphological examination of the organ of Corti.
    • It facilitates quantitative assessment of ototoxicity, noise-induced damage, and age-related changes.
    • The method's adaptability makes it valuable for diverse toxicological research across species.