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Mediators of Inflammation
Volume 2011, Article ID 787159, 12 pages
http://dx.doi.org/10.1155/2011/787159
Research Article

Emerging Role of PPAR-β/δ in Inflammatory Process Associated to Experimental Periodontitis

1IRCCS Centro Neurolesi “Bonino-Pulejo”, 98125 Messina, Italy
2Istituto Policattedra di Odontostomatologia Universita degli Studi di Messina, 98100 Messina, Italy
3Department of Clinical and Experimental Medicine and Pharmacology, School of Medicine, University of Messina, Torre Biologica, Policlinico Universitario Via C. Valeria, Gazzi, 98100 Messina, Italy

Received 16 June 2011; Accepted 15 August 2011

Academic Editor: Fulvio D'Acquisto

Copyright © 2011 Rosanna Di Paola et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The aim of the present study was to evaluate the contribution of peroxisome proliferator-activated receptor (PPAR-β/δ) in animal model of periodontitis. Male Sprague-Dawley rats were lightly anaesthetized with pentobarbitone (35 mg/kg). Sterile, 2-0 black braided silk thread was placed around the cervix of the lower left first molar and knotted medially. Animals received GW0742 (0.3 mg/kg, 10% DMSO, i.p. after the ligature placement and daily for eight days). At day 8, the gingivomucosal tissue encircling the mandibular first molar was removed. One the eighth day after placement of the ligature, we evaluated (1) NF-κB expression, (2) cytokines expression, (3) iNOS expression, (5) the nitration of tyrosine, (6) apoptosis, and (8) the degree of gingivomucosal tissues injury. Administration of GW0742 significantly decreased all of the parameters of inflammation as described above. Taken together, these results demonstrate that GW0742 exerts an anti-inflammatory role during experimental periodontitis and is able to ameliorate the tissue damage.