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Dionísio TJ, Souza GP, Colombini-Ishikiriama BL, Garbieri TF, Parisi VA, Oliveira GM, Cano IP, Rodini CO, Oliveira SHP, Greene AS, Santos CF. AT1 receptor antagonism promotes bone loss attenuation in experimental periodontitis, blocks inflammatory mediators, and upregulates antioxidant enzymes and bone formation markers. J Periodontol 2019; 91:533-544. [PMID: 31473996 DOI: 10.1002/jper.19-0064] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 06/05/2019] [Accepted: 07/30/2019] [Indexed: 01/05/2023]
Abstract
BACKGROUND The initiation and progression of periodontitis might involve a local renin-angiotensin system in periodontal tissue. This study hypothesized that Losartan treatment could promote protection to rats submitted to experimental periodontitis (EP) by attenuating alveolar bone loss due to reduction in inflammatory cytokines, better reactive oxidant species regulation and maintenance of the balance between bone formation and resorption factors. METHODS One hundred and thirty rats were submitted to EP with a silk suture thread (4.0) placed around the lower right first molar for 1, 3, 7, and 14 consecutive days. The study comprised four groups: G1-control without EP; G2-animals with EP treated with water; G3-Losartan-treated animals (treatment started at the same day of EP induction), and G4-animals previously treated with Losartan for 30 days followed by induction of EP and continuity of treatment. RESULTS G2 rats had greater bone loss volume, increased number, and thickness and decreased separation of trabeculae. On the other hand, G4 animals showed significant improvements in these parameters. Histological analysis revealed that EP favors inflammatory cell infiltration and junctional epithelium, cementum with alveolar bone crest destruction, but animals pretreated with Losartan (G4) did not show these features. Although the G3 animals did not demonstrate the improvements detected in G4, mRNA expression results were similar. In mandibular tissue, EP promoted mRNA increases for ACE, AT1 receptor, and inflammatory mediators as well as decreases for antioxidant enzymes. However, Losartan treatments attenuated these responses in addition to promoting an increase in bone formation markers and transcription factors. CONCLUSION AT1 receptor modulates EP progression.
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Affiliation(s)
- Thiago J Dionísio
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Gabriela P Souza
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | | | - Thais F Garbieri
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Viviane A Parisi
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Gabriela M Oliveira
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Isadora P Cano
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Camila O Rodini
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Sandra H P Oliveira
- Department of Basic Sciences, School of Dentistry, São Paulo State University-UNESP, Araçatuba, São Paulo, Brazil
| | - Andrew S Greene
- Department of Biomedical Engineering, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Carlos F Santos
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
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Neves LT, Dionísio TJ, Garbieri TF, Parisi VA, Oliveira FV, Oliveira TM, Santos CF. Novel rare variations in
IRF6
in subjects with non‐syndromic cleft lip and palate and dental agenesis. Oral Dis 2018; 25:223-233. [DOI: 10.1111/odi.12975] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 08/30/2018] [Accepted: 09/03/2018] [Indexed: 12/11/2022]
Affiliation(s)
- Lucimara T. Neves
- Department of Biological Sciences, Bauru School of Dentistry University of São Paulo Bauru Brazil
- Post‐Graduation Program in Rehabilitation Sciences, Hospital for Rehabilitation of Craniofacial Anomalies University of São Paulo Bauru Brazil
| | - Thiago J. Dionísio
- Department of Biological Sciences, Bauru School of Dentistry University of São Paulo Bauru Brazil
| | - Thais F. Garbieri
- Department of Biological Sciences, Bauru School of Dentistry University of São Paulo Bauru Brazil
| | - Viviane A. Parisi
- Department of Biological Sciences, Bauru School of Dentistry University of São Paulo Bauru Brazil
| | - Fernanda V. Oliveira
- Department of Pediatric Dentistry, Orthodontics and Community Health, Bauru School of Dentistry University of São Paulo Bauru Brazil
| | - Thais M. Oliveira
- Post‐Graduation Program in Rehabilitation Sciences, Hospital for Rehabilitation of Craniofacial Anomalies University of São Paulo Bauru Brazil
- Department of Pediatric Dentistry, Orthodontics and Community Health, Bauru School of Dentistry University of São Paulo Bauru Brazil
| | - Carlos F. Santos
- Department of Biological Sciences, Bauru School of Dentistry University of São Paulo Bauru Brazil
- Post‐Graduation Program in Rehabilitation Sciences, Hospital for Rehabilitation of Craniofacial Anomalies University of São Paulo Bauru Brazil
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