April 1984
Volume 25, Issue 4
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Articles  |   April 1984
Deficiencies of vitamins E and A in the rat: lipofuscin accumulation in the choroid.
Investigative Ophthalmology & Visual Science April 1984, Vol.25, 429-433. doi:
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      R K Herrmann, W G Robison, J G Bieri; Deficiencies of vitamins E and A in the rat: lipofuscin accumulation in the choroid.. Invest. Ophthalmol. Vis. Sci. 1984;25(4):429-433.

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Abstract

The effects of vitamin E and A deficiencies on the formation of lipofuscin in the melanocytes and fibroblasts of the choroidal stroma and in the endothelial cells of the choriocapillaris were studied. Weanling female albino rats (Sprague-Dawley) were divided into three groups and fed purified diets adequate or deficient in vitamins E and A: +E, +A; -E, -A. After 35 weeks, vitamin E deficient rats (-E, +A) exhibited increased lipofuscin-specific autofluorescence in the choroid compared to the controls (+E, +A). By electron microscopy and morphometric methods the choroidal stroma of vitamin E deficient rats displayed an increase in lipofuscin content as measured by the number of lipofuscin granules and their size, if compared with the controls. However, in vitamin E deficiency, only animals with a supply of vitamin A (-E, +A) showed higher amounts of lipofuscin in the choroidal stroma; animals deficient in both vitamins (-E, -A) stayed on the same level as the controls (+E, +A). In the endothelial cells of the choriocapillaris, on the other hand, no significant increases in lipofuscin content were observed in either group of vitamin E deficient animals (-E, +A), (-E, -A). Apparently vitamin E deficiency affects the choroid by increasing lipofuscin formation only in the melanocytes and fibroblasts. Vitamin A appears to play a role in lipofuscin formation.

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