Presence of caspase, PCNA and CD5 in the pulp of rats subjected bleaching with different concentrations hydrogen peroxide: study histological and immunohistochemical

• Grant number: 13/25429-0
• Support Opportunities: Scholarships in Brazil - Master
• Start date: August 01, 2014
• End date: September 30, 2015
• Field of knowledge: Health Sciences - Dentistry - Endodontics
• Agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Luciano Tavares Angelo Cintra
• Grantee: Francine Benetti
• Host Institution: Faculdade de Odontologia (FOA). Universidade Estadual Paulista (UNESP). Campus de Araçatuba. Araçatuba , SP, Brazil

Abstract

Introduction: Previous studies (FAPESP process n. 2011/13709-2, Cintra et al., 2013, 2014ab) indicated damage to pulp cells, as well as the process of repair of these, after suffering an oxidative stress due to the presence of bleaching agents on the surface tooth. Objective: To further study the mechanisms involved in the cellular response to understanding the pulp changes resulting from the application of two protocols of dental based Hydrogen Peroxide (HP) bleaching. Methods: Will be used 40 rats Wistar divided into 2 experimental groups: BLUE (PH 20%, 1x45min) and MAXX (PH 35% 3x15mim). Be whitened upper molars of each animal with one of the protocols and other untreated molars are used for control. After 2 and 30 days, the animals are sacrificed and the jaws removed and processed for Histological Evaluation laboratory (HE) and immunohistochemistry (Caspase - 3 - activated, PCNA and CD5). Method of analysis: The tissue sections stained with HE will be evaluated by pre-established criteria by assigning scores to microscopic events and results will be analyzed statistically by the Kruskal Wallis and Dunn tests (p < 0.05). The values of Caspase - 3 - activated, PCNA and CD5 obtained will be subjected to the Kolmogorov-Smirnov and Shapiro-Wilk tests to define the statistical test to be used (p<0.05). (AU)

Scientific publications

(5)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BENETTI, FRANCINE; GOMES-FILHO, JOAO EDUARDO; FERREIRA, LUCIANA LOUZADA; ERVOLINO, EDILSON; FRAGA BRISO, ANDRE LUIZ; SIVIERI-ARAUJO, GUSTAVO; DEZAN-JUNIOR, ELOI; ANGELO CINTRA, LUCIANO TAVARES. Hydrogen peroxide induces cell proliferation and apoptosis in pulp of rats after dental bleaching in vivo. ARCHIVES OF ORAL BIOLOGY, v. 81, p. 103-109, SEP 2017. (13/25429-0)

CINTRA, L. T. A.; FERREIRA, L. L.; BENETTI, F.; GASTELUM, A. A.; GOMES-FILHO, J. E.; ERVOLINO, E.; BRISO, A. L. F.. The effect of dental bleaching on pulpal tissue response in a diabetic animal model. International Endodontic Journal, v. 50, n. 8, p. 790-798, AUG 2017. (13/25429-0)

BENETTI, F.; GOMES-FILHO, J. E.; FERREIRA, L. L.; SIVIERI-ARAUJO, G.; ERVOLINO, E.; BRISO, A. L. F.; CINTRA, L. T. A.. Concentration-dependent effect of bleaching agents on the immunolabelling of interleukin-6, interleukin-17 and CD5-positive cells in the dental pulp. International Endodontic Journal, v. 51, n. 7, p. 789-799, JUL 2018. (13/25429-0)

FERREIRA, L. L.; GOMES-FILHO, J. E.; BENETTI, F.; CARMINATTI, M.; ERVOLINO, E.; BRISO, A. L. F.; CINTRA, L. T. A.. The effect of dental bleaching on pulpal tissue response in a diabetic animal model: a study of immunoregulatory cytokines. International Endodontic Journal, v. 51, n. 3, p. 347-356, MAR 2018. (13/25429-0)

ANGELO CINTRA, LUCIANO TAVARES; BENETTI, FRANCINE; FERREIRA, LUCIANA LOUZADA; RAHAL, VANESSA; ERVOLINO, EDILSON; JACINTO, ROGERIO DE CASTILHO; GOMES FILHO, JOAO EDUARDO; FRAGA BRISO, ANDRE LUIZ. Evaluation of an experimental rat model for comparative studies of bleaching agents. Journal of Applied Oral Science, v. 24, n. 2, p. 171-180, MAR-APR 2016. (11/13709-2, 13/25429-0)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

BENETTI, Francine. Análise histológica e imunoistoquímica do tecido pulpar de ratos Wistar submetidos a procedimento clareador com duas concentrações de peróxido de hidrogênio. 2015. Master's Dissertation - Universidade Estadual Paulista (Unesp). Faculdade de Odontologia. Araçatuba Araçatuba.