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Related Experiment Videos

Ocular retardation (or) in the mouse.

R M Robb, J Silver, R T Sullivan

    Investigative Ophthalmology & Visual Science
    |May 1, 1978
    PubMed
    Summary

    The ocular retardation (or) mutation in mice causes severe developmental defects, including arrested retinal development and optic nerve aplasia. Early cell death and optic fissure abnormalities precede these severe ocular malformations.

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    Area of Science:

    • Developmental biology
    • Ophthalmology
    • Genetics

    Background:

    • The ocular retardation (or) mutation is a known genetic factor affecting mouse eye development.
    • Understanding the precise mechanisms of this mutation is crucial for studying inherited eye disorders.

    Purpose of the Study:

    • To investigate the morphological basis of the ocular retardation (or) mutation in mice.
    • To identify the earliest developmental events disrupted by the (or) mutation.

    Main Methods:

    • Morphological study of serial 1 μm sections from mice with the ocular retardation (or) mutation.
    • Analysis of retinal development, optic nerve formation, lens, and optic fissure.
    • Observation of cell death patterns during embryonic eye development.

    Main Results:

    • The ocular retardation (or) mutation leads to early arrest of retinal development and optic nerve aplasia.
    • Aberrations in optic cup morphogenetic cell death and optic fissure formation were observed.
    • Lens cataract and microphthalmia are characteristic features, appearing secondary to earlier defects.

    Conclusions:

    • The (or) mutation disrupts critical early developmental processes in the mouse eye.
    • Abnormal cell death and optic fissure closure are primary events leading to severe ocular malformations.
    • These findings provide insights into the genetic control of eye development and associated pathologies.

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