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Related Experiment Videos

Retinal anomalies in trisomy 18.

A B Fulton, J L Craft, Z N Zakov

    Albrecht Von Graefes Archiv Fur Klinische Und Experimentelle Ophthalmologie. Albrecht Von Graefe'S Archive for Clinical and Experimental Ophthalmology
    |January 1, 1980
    PubMed
    Summary

    Trisomy 18 patients exhibit immature neural retinas and hypopigmentation, similar to albinism. This suggests pigmentation is crucial for retinal maturation in trisomy 18.

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    Area of Science:

    • Ophthalmology
    • Genetics
    • Developmental Biology

    Background:

    • Trisomy 18 (Edwards syndrome) is a common autosomal trisomy.
    • Ocular abnormalities are frequently observed in trisomy 18.
    • The role of pigmentation in retinal development is not fully understood.

    Purpose of the Study:

    • To histopathologically examine the eyes of patients with trisomy 18.
    • To investigate the characteristics of the posterior retina in trisomy 18.
    • To explore the association between hypopigmentation and retinal immaturity.

    Main Methods:

    • Histopathological examination of ocular tissues.
    • Transmission and scanning electron microscopy of the posterior retina.
    • Analysis of melanosome maturation in retinal pigment epithelium.

    Main Results:

    • Eyes of trisomy 18 patients showed immature neural retinas.
    • Posterior retinal pigment epithelium had a paucity of mature melanosomes.
    • The retinal pigment epithelium resembled that of human albinism.

    Conclusions:

    • Hypopigmentation in trisomy 18 is associated with immature neural retinas.
    • Pigmentation may play a role in controlling neural retina maturation.
    • Findings suggest a potential link between genetic disorders and retinal development.

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