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Investigative Ophthalmology & Visual Science, Vol 27, 1675-1680, Copyright © 1986 by Association for Research in Vision and Ophthalmology

ARTICLES AND REPORTS

Macular degeneration and elevated serum ceruloplasmin

DA Newsome, M Swartz, NC Leone, AT Hewitt, F Wolford and ED Miller

Macular degeneration associated with age and drusen, an important cause of visual loss, is associated clinically with alterations in the retinal pigmented epithelium. Because the pigmented epithelium is a copper-rich tissue with antioxidant properties, the copper economy in patients and controls were studied by measuring ceruloplasmin. Ceruloplasmin, a multifunctional, copper-binding alpha-globulin, was significantly elevated in non-related patients as compared with controls (691 +/- 153 mg/L vs 312 +/- 64; P less than .001), both by the p-phenylenediamine oxidation technique and radial immunodiffusion assay. When 53 members of a large family were divided clinically into persons with and without macular degeneration, the ceruloplasmin concentrations were not significantly different from each other, but were elevated as compared with non-related controls (P less than .001). These differences were not due to an intragroup age mismatch. A group of patients with retinitis pigmentosa had normal serum ceruloplasmin concentrations. This study suggests a relationship between serum ceruloplasmin, trace metals, and the tissue alterations associated with macular degeneration that deserves further investigation.


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