Korean J Ophthalmol > Volume 8(1); 1994 > Article
Korean Journal of Ophthalmology 1994;8(1):26-31.
DOI: https://doi.org/10.3341/kjo.1994.8.1.26    Published online June 30, 1994.
Increased glycosylation of human lens epithelial basement membrane in diabetes mellitus.
Dong H Shin, Shlomo S Mandel, Jin H Lee, Brett Ernst, Bruce L Newman, Mark Juzych
Kresge Eye Institute, Wayne State Universiry school or Medicine, Detroit, Michigan, U.S.A.
Abstract
We studied the nonenzymatic glycosylation of lens epithelial basement membranes (LEBM) of senile cataractous lenses of both diabetic and nondiabetic patients. The human LEBMs were isolated from surgically removed senile cataracts and purified by osmotic lysis and detergent treatments. Glycosylation assay of LEBMs was done using the colorimetric method of Fluckiger and Winterhalter. The glycosylation value ranged from 16.39 to 92.56 n mol/mg protein overall, with a mean of 63.54 +/- 24.56 n mol/mg protein for the diabetic specimens and a mean of 29.97 +/- 14.48 n mol/mg protein for the nondiabetic controls (P = 0.009). The study confirms our previous observation of in vivo glycosylation of the LEBM and further establishes that diabetic patients have a twofold increase in the amount of LEBM glycosylation when compared to their nondiabetic counterparts.
Key Words: lens;basement membrane;in vivo glycosylation;diabetes mellitus;cataract
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