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  • Title: Decreased levels of pigment epithelium-derived factor in eyes with neuroretinal dystrophic diseases.
    Author: Ogata N, Matsuoka M, Imaizumi M, Arichi M, Matsumura M.
    Journal: Am J Ophthalmol; 2004 Jun; 137(6):1129-30. PubMed ID: 15183804.
    Abstract:
    PURPOSE: To determine the concentration of pigment epithelium-derived factor (PEDF) in the aqueous humor of eyes with neuroretinal dystrophy. DESIGN: Observational case series. METHODS: Aqueous humor was obtained from patients during cataract surgery, and the PEDF concentration in the aqueous humor was measured by enzyme-linked immunosorbent assay. The primary diagnosis was cataract in 162 eyes; of these there were five eyes with retinitis pigmentosa, nine eyes with advanced glaucoma, and 148 eyes with cataract alone. RESULTS: The mean levels of PEDF in eyes with retinitis pigmentosa (0.24 +/- 0.04 microg/ml, mean +/- SE, P =.0004) and advanced glaucoma (0.46 +/- 0.08 microg/ml, P =.003) were significantly lower than that in eyes with cataract alone (0.86 +/- 0.04 microg/ml). CONCLUSION: The lower levels of PEDF in eyes with neuroretinal dystrophy may be related to the loss of the retinal ganglion cells or retinal pigment epithelium cells that synthesize PEDF.
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