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Effect of telmisartan on levels of IL ‐1, TNF ‐α, down‐regulated COX ‐2, MMP ‐2, MMP ‐9 and RANKL / RANK in an experimental periodontitis model
Author(s) -
Araújo Aurigena A.,
Souza Tatiana O.,
Moura Lígia M.,
Brito Gerly A. C.,
Aragão Karoline S.,
Araújo Lorena S.,
Medeiros Caroline A. X.,
Alves Maria S. C. F.,
Araújo Raimundo F.
Publication year - 2013
Publication title -
journal of clinical periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.456
H-Index - 151
eISSN - 1600-051X
pISSN - 0303-6979
DOI - 10.1111/jcpe.12160
Subject(s) - rankl , chemistry , matrix metalloproteinase , periodontitis , oxidative stress , myeloperoxidase , inflammation , glutathione , endocrinology , medicine , pharmacology , receptor , biochemistry , enzyme , activator (genetics)
Aim The aim of this study was to evaluate the effect of telmisartan ( TELM ) on inflammation, oxidation and the expression of matrix metalloproteinases ( MMP s) and the expression RANKL / RANK / OPG in the periodontal tissue of a rat model for ligature‐induced periodontitis. Materials and methods Male Wistar albino rats were randomly divided into five groups of 10 rats each: (i) non‐ligated, given water; (ii) ligated, given water; (iii) ligated, given 1 mg/kg TELM ; (iv) ligated, given 5 mg/kg TELM ; and (v) ligated, given 10 mg/kg TELM . All groups were treated with saline or TELM for 10 days. Periodontal tissue was analysed by histopathology; by the immunohistochemical examination of COX ‐2, MMP ‐2, MMP ‐9 and the RANKL / RANK / OPG pathway; and by ELISA analysis of the levels of IL ‐1β, IL ‐10, TNF ‐α, myeloperoxidase ( MPO ), malonaldehyde ( MDA ) and glutathione ( GSH ). Results Treatment with 10 mg/kg TELM resulted in reduced concentrations of MPO , MDA ( p < 0.05) and the pro‐inflammatory cytokine IL ‐1β ( p < 0.05); reduced expression of MMP ‐2, MMP ‐9, RANK , RANKL and COX ‐2; and an increase in OPG . The levels of TNF ‐α were significantly reduced in all TELM ‐treated groups. Conclusions These findings confirm the involvement of TELM in reducing the inflammatory response, oxidative stress and bone loss in ligature‐induced periodontitis in rats.