Vardar-Sengul, S., Buduneli, N., Buduneli, E., Baylas, H., Atilla, G., Lappin, D. and Kinane, D.F. (2006) Effects of selective cyclooxygenase-2 inhibitor and omega-3 fatty acid on serum interleukin-1 beta, osteocalcin, and C-reactive protein levels in rats. Journal of Periodontology, 77(4), pp. 657-663. (doi: 10.1902/jop.2006.050164)
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Abstract
Background: The aim of this study was to evaluate the effects of selective cyclooxygenase-2 inhibitor, celecoxib, and omega-3 fatty acid on serum levels of interleukin 1-beta (IL-1β), osteocalcin (OC), and C-reactive protein (CRP) in experimental periodontitis.
Methods: Experimental periodontitis in rats was induced by repeated injection of purified lipopolysaccharide (LPS) derived from Escherichia coli endotoxin. Forty-seven adult male Sprague-Dawley rats were divided into five study groups as follows: saline control, LPS, LPS + celecoxib, LPS + omega-3 fatty acid, and LPS + celecoxib + omega-3 fatty acid. Celecoxib and omega-3 fatty acid were given alone or in combination during 14 days of the experimental study period. At the end of the 2-week protocol, serum samples were obtained, and the rats were sacrificed. Serum samples were analyzed for IL-1β, OC, and CRP concentrations by enzyme-linked immunosorbent assay. Defleshed jaws were analyzed morphometrically for alveolar bone loss. Data were evaluated statistically by non-parametric tests.
Results: According to the morphometric measurements, the LPS and drug treatment groups showed significantly higher bone loss than the saline control group (P <0.05). Omega-3 fatty acid, both alone and in combination with celecoxib, revealed significantly higher IL-1β levels than LPS and celecoxib groups (P <0.05). Individual and combined administration of celecoxib and omega-3 fatty acid significantly increased OC levels compared to the LPS group (P <0.05). There were no significant differences in serum CRP levels.
Conclusions: Celecoxib and/or omega-3 fatty acid administration does not significantly influence circulating levels of CRP. The significantly increased serum OC level observed after individual and combination administration suggests that celecoxib and omega-3 fatty acid may influence bone remodeling and thereby inhibit the progression of alveolar bone resorption. However, the failure to observe any significant inhibition of bone loss in celecoxib- and/or omega-3 fatty acid-treated rats compared to the LPS group suggests that their therapeutic effect may be reduced by other factors, such as increases in serum IL-1β promoting osteoclast activity.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Lappin, Dr David |
| Authors: | Vardar-Sengul, S., Buduneli, N., Buduneli, E., Baylas, H., Atilla, G., Lappin, D., and Kinane, D.F. |
| College/School: | College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing > Dental School |
| Journal Name: | Journal of Periodontology |
| ISSN: | 0022-3492 |
| Published Online: | 01 March 2009 |
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