Abstract
The lipid content of decapsulated whole lenses and fiber cell membranes from normal andcataractous human lenses has been investigated. Similar amounts of phospholipid, cholesterol and fatty acids are found in chloroform-methanol extracts of normal and cataractous lenses. However, while most of these lipids are located in the membrane fraction of normal lenses, in cataracts only half of the lipid is found in the membranes. Lipid: protein ratios for reduced and alkylated membrane preparations are the same for both normal and cataractous lenses suggesting a proportional loss of these constituents in cataract. The relative fatty acid composition for normal and cataractous lenses and their isolated membrane fraction is identical. These observations suggest that there is a generalized decomposition of the lens fiber cell membranes with cataract formation.
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