Heredofamilial Retinal Dystrophy in Guinea Baboons: Ii. Electron Microscopic Observations

Rebecca M. Santos Anderson, Mark O.M. Tso, Samuel J. Vainisi

Research output: Contribution to journalArticlepeer-review

Abstract

Electron microscopic study of an inherited retinal degeneration in Guinea baboons disclosed primary pathologic alterations in photoreceptor cells. These changes were first seen in the perifoveal region. Cell death occurred in two forms: hydropic degeneration and densification and/or necrosis. The hydropic type was mainly associated with cone cells, whereas densification and/or necrosis was largely seen in rod cells. Lamellar bodies and granular membrane-bound inclusions were noted in the inner segments and soma. Mitochondria were vacuolated and formed membranous whorls. Bundles of filaments were arranged in parallel array in the soma synaptic endings. Clusters of tubules were present in the synaptic terminals. Preliminary biochemical studies on these animals have yielded no clues to the pathogenesis of the retinopathy.

Original languageEnglish (US)
Pages (from-to)1762-1770
Number of pages9
JournalArchives of ophthalmology
Volume101
Issue number11
DOIs
StatePublished - Nov 1983
Externally publishedYes

ASJC Scopus subject areas

  • Ophthalmology

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