Periodontal disease-associated compensatory expression of osteoprotegerin is lost in type 1 diabetes mellitus and correlates with alveolar bone destruction by regulating osteoclastogenesis
| Autor: | C. Rossa-Junior, Danilo Lopes Ferrucci, Luis Antonio Peroni, Juliete A.F. Silva, Eduardo de Paula Ishi, Dagmar Ruth Stach-Machado, Hernandes F. Carvalho |
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| Rok vydání: | 2011 |
| Předmět: |
musculoskeletal diseases
Male congenital hereditary and neonatal diseases and abnormalities medicine.medical_specialty Histology Alveolar Bone Loss Osteoclasts Bone resorption Osteoprotegerin Osteoclast Internal medicine medicine Animals Humans Bone Resorption Rats Wistar Receptor Dental alveolus Periodontal Diseases biology business.industry Immunohistochemistry Resorption Rats medicine.anatomical_structure Endocrinology Diabetes Mellitus Type 1 RANKL biology.protein Anatomy Signal transduction business |
| Zdroj: | Cells, tissues, organs. 196(2) |
| ISSN: | 1422-6421 |
| Popis: | Alveolar bone resorption results from the inflammatory response to periodontal pathogens. Systemic diseases that affect the host response, such as type 1 diabetes mellitus (DM1), can potentiate the severity of periodontal disease (PD) and accelerate bone resorption. However, the biological mechanisms by which DM1 modulates PD are not fully understood. The aim of this study was to determine the influence of DM1 on alveolar bone resorption and to evaluate the role of receptor activator of nuclear factor-kappaB ligand (RANKL)/osteoprotegerin (OPG) in osteoclastogenesis in rats. PD was induced by means of ligature in nondiabetic and in streptozotocyn-induced DM1 rats. Morphological and morphometric analyses, stereology and osteoclast counting were performed. RANKL and OPG mRNA levels, protein content, and location were determined. PD caused alveolar bone resorption, increased the number of osteoclasts in the alveolar bone crest and also promoted changes in RANKL/OPG mRNA expression. DM1 alone showed alveolar bone destruction and an increased number of osteoclasts at the periapical and furcal regions. DM1 exacerbated these characteristics, with a greater impact on bone structure, resulting in a low OPG content and a higher RANKL/OPG ratio, which correlated with prominent osteoclastogenesis. This work demonstrates that the effects of PD and DM1 enhance bone destruction, confirms the importance of the RANKL signaling pathway in bone destruction in DM1 in animal models and suggests the existence of alternative mechanisms potentiating bone degradation in PD. |
| Databáze: | OpenAIRE |
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