Efficacy of Structurally-Diverse Aldose Reductase Inhibitors on Experimental Periodontitis in Rats
2011
Background: To study aldose reductase and the sorbitol pathway in periodontitis and diabetes, rats with experimental periodontitis with or without diabetes were treated with three structurally diverse aldose reductase inhibitors (ARIs).Methods: Periodontitis was induced with three consecutive palatal injections of Porphyromonas gingivalis lipopolysaccharide (LPS) at 48-hour intervals between the first and second molars on the right side in young, age-matched, streptozotocin-induced rats with and without diabetes 44 days after initiation of diets with and without the ARIs tolrestat, imirestat, and quercetin. As an internal control, phosphate-buffered saline (PBS) was similarly injected on the left side. Twenty-four days after the final injection, all rats were euthanized. Defleshed samples were stained with 5% toluidine blue and palatal digital images were traced to include the enamel crown and exposed root. The root/enamel ratios (to estimate alveolar bone loss) were analyzed with repeated measures analys...
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