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Related Experiment Videos

Specific anosmia in the laboratory mouse

C J Wysocki, G Whitney, D Tucker

    Behavior Genetics
    |March 1, 1977
    PubMed
    Summary

    Mice strains show varying sensitivities to odors. C57BL/6J mice exhibit reduced sensitivity to isovaleric acid, potentially modeling human specific anosmia (odor blindness).

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    Area of Science:

    • Neuroscience
    • Genetics
    • Olfactory Research

    Background:

    • Human olfaction exhibits specific anosmia phenotypes with varied odorant sensitivities.
    • Understanding these phenotypes can contribute to a general theory of olfaction.

    Purpose of the Study:

    • To investigate relative odorant sensitivity in different inbred mouse strains.
    • To determine if specific odorant insensitivity in mice can serve as a model for human specific anosmia.

    Main Methods:

    • Utilized a conditioned aversion technique to assess odorant sensitivity in male inbred mice.
    • Tested sensitivity to primary odorants (isovaleric acid, pentadecalactone) and a complex odorant (amyl acetate).
    • Compared sensitivity across multiple inbred mouse strains, including C57BL/6J, C57BL/10J, and others.

    Main Results:

    • C57BL/6J and C57BL/10J mice demonstrated lower sensitivity to isovaleric acid compared to seven other inbred strains.
    • This insensitivity to isovaleric acid in C57BL/6J mice did not extend to pentadecalactone or amyl acetate.
    • Strain-specific odorant sensitivity profiles were observed.

    Conclusions:

    • The C57BL/6J mouse strain may serve as a valuable animal model for studying specific anosmia as observed in humans.
    • Odorant sensitivity is genetically influenced and can vary significantly between different inbred mouse strains.
    • Further research can explore the genetic and molecular basis of these specific odorant sensitivities.

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