Reduced and oxidized ascorbates in guinea pig retina under normal and light-exposed conditions

B. J. Woodford, M. O.M. Tso, K. W. Lam

Research output: Contribution to journalArticlepeer-review

Abstract

Both reduced and oxidized ascorbates were measured in aqueous, neural retina, and pigment epithelium-choroid complex (PE-C) of pigmented guinea pigs. Normal values for total ascorbate of 16 mg/dl in aqueous, 22 mg/dl in neural retina, and 7 mg/dl in PE-C were found. After mild photic damage caused by varying lengths of exposure of 10,000 to 20,000 lux of fluorescent lighting, reduced ascorbate concentrations generally decreased in the neural retina, while oxidized ascorbate generally increased in PE-C. In both normal and light-exposed retinas, reduced ascorbate was predominant in the neural retina, and oxidized ascorbate was predominant in the PE-C. Histochemical localization of reduced ascorbate occurred in the Muller cell fibers and at the apices of the retinal pigment epithelium.

Original languageEnglish (US)
Pages (from-to)862-867
Number of pages6
JournalInvestigative Ophthalmology and Visual Science
Volume24
Issue number7
StatePublished - 1983
Externally publishedYes

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems
  • Cellular and Molecular Neuroscience

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