Dose-response assessment of chemically modified curcumin in experimental periodontitis
| Autor: | Francis Johnson, Morgana Rodrigues Guimarães-Stabili, Carlos Rossa, Luis Carlos Spolidório, Dayane de Almeida Brandão, Lorne M. Golub |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Lipopolysaccharides Curcumin Lipopolysaccharide medicine.medical_treatment Alveolar Bone Loss Gingiva Osteoclasts Inflammation Pharmacology Bone resorption 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine In vivo medicine Animals Periodontitis Tumor Necrosis Factor-alpha 030206 dentistry medicine.disease Resorption 030104 developmental biology Cytokine chemistry Periodontics Tumor necrosis factor alpha medicine.symptom |
| Zdroj: | Journal of periodontology. 90(5) |
| ISSN: | 1943-3670 |
| Popis: | Background CMC2.24, a novel tri-ketonic chemically modified compound based on natural di-ketonic curcumin, has been shown to reduce bone loss and inflammatory mediators in experimental periodontitis, however, a potential dose-response relationship was not determined. The purpose of this study was to assess the effects of different doses of CMC2.24 on inflammation and bone resorption in vivo and also to describe on the effects of CMC2.24 on macrophage response. Methods CMC2.24 was administered daily to animals for 28 days by oral gavage, at the following doses: 0 (control), 1, 3, 10, and 30 mg/kg of body weight. Experimental periodontitis was induced by injections of lipopolysaccharide (LPS) into the gingival tissues. Outcomes assessed were bone resorption, detection of tartrate-resistant acid phosphatase, and determination of gene expression. In vitro, macrophages (RAW264.7) were treated with different concentrations of CMC2.24: 1, 3, 10, and 30 μM and then subjected to different activation stimuli. Gene expression, phagocytic activity, production of reactive oxygen species (ROS) and cytokine production were evaluated. Results CMC2.24 inhibited bone resorption, osteoclastogenesis, and tumor necrosis factor (TNF)-α expression in vivo. These beneficial responses reached maximum levels at a dose of 1 mg/kg, i.e. no dose-dependent effect. In vitro, CMC2.24 reduced the production of TNF-α and interleukin-10, inhibited phagocytic activity and stimulated production of ROS. A dose-dependent effect was observed only for ROS production. Conclusion Low doses of CMC2.24 (1 mg/kg/day) administered orally were sufficient to significantly inhibit alveolar bone resorption associated with the experimental periodontal disease; whereas in vitro macrophage inflammatory gene expression and phagocytosis were reduced, whereas production of ROS was stimulated. |
| Databáze: | OpenAIRE |
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