Receptor for Advanced Glycation End Product Expression in Experimental Diabetic Retinopathy

摘要

The advanced glycation end product (AGE)-receptor for AGE (RAGE) pathway is involved in the pathogenesis of diabetic microvascular damage. The special distribution of RAGE and its engagement has an impact on the development of diabetic retinopathy. In the present study, we used immunofluorescence and confocal laser microscopy "to study RAGE expression with special emphasis on Mueller glia in Sprague Dawley rats. RAGE expression was low in nondiabetic retinae and was found in ganglion cells and Miiller cell end feet. In diabetic retinae, upregulated RAGE was predominantly expressed in retinal glia. Since Miiller cells are important in the regulation of important features of early retinal vascular damage, such as vascular permeability, homeostasis, and response to stress, RAGE appears to be a central modulator in diabetic retinopathy.