Evanthia Lalla, Ira B. Lamster, Michael Feit, Linda Huang, Alexandra Spessot, Wu Qu, Thomas Kislinger, Yan Lu, David M. Stern, Ann Marie Schmidt
J Clin Invest.
2000;
105(8):1117–1124
doi:10.1172/JCI8942
This article Copyright © 2000, The American Society for Clinical Investigation
Abstract
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D
iabetes is associated with increased prevalence, severity, and progression of periodontal disease. To test the hypothesis that activation of RAGE (Receptor for Advanced Glycation End products) contributes to the pathogenesis of diabetes-associated periodontitis, we treated diabetic mice, infected with the human periodontal pathogen Porphyromonas gingivalis, with soluble RAGE (sRAGE). sRAGE is the extracellular domain of the receptor, which binds ligand and blocks interaction with, and activation of, cell-surface RAGE. Blockade of RAGE diminished alveolar bone loss in a dose-dependent manner. Moreover, we noted decreased generation of the proinflammatory cytokines TNF-α and IL-6 in gingival tissue, as well as decreased levels of matrix metalloproteinases. Gingival AGEs were also reduced in mice treated with sRAGE, paralleling the observed suppression in alveolar bone loss. These findings link RAGE and exaggerated inflammatory responses to the pathogenesis of destructive periodontal disease in diabetes.
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