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In vitro analysis of mast cells and renin-angiotensin system role of spontaneously hypertensive animals osteoblasts and osteoclasts

Grant number: 17/05873-3
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): August 01, 2017
Effective date (End): July 31, 2020
Field of knowledge:Health Sciences - Dentistry
Principal Investigator:Sandra Helena Penha de Oliveira
Grantee:Sabrina Cruz Tfaile Frasnelli
Home Institution: Faculdade de Odontologia (FOA). Universidade Estadual Paulista (UNESP). Campus de Araçatuba. Araçatuba , SP, Brazil
Associated research grant:15/03965-2 - Role of the renin-angiotensin system in different oral inflammatory models: an experimental interdisciplinary and clinical approach, AP.TEM

Abstract

Periodontal inflammation is associated with many systemic diseases, being called periodontal medicine, among them, cardiovascular diseases, diabetes (DM) and osteoporosis. Periodontitis (PD) is an inflammatory and infectious process of the ligament and alveolar bone that support the teeth where the release of inflammatory mediators occurs. Periodontitis involves local involvement of the renin-angiotensin system (RAS), since angiotensin acts on inflammation. Spontaneously hypertensive rats (SHR) have been used as genetic model of hypertension (DC). These animals are characterized by high blood pressure, significant changes in bone metabolism and a high activation of the sympathetic nervous system. Mast cells (MCs) play a fundamental role since they act in the tissue repair and in the defense of the organism. MCs have been observed in both the normal and inflamed periodontium, thus, it is assumed that MCs may participate in a possible inflammatory response, which may result in destruction and /or tissue and bone protection. Many studies have proposed that specific proteases (tryptase and chymase) and inflammatory mediators released by MCs are involved in the tissue destruction present in PD, but the mechanisms involved in this process are still unknown. MicroRNAs (miRNAs) play an important role in the regulation of bone metabolism and the immune-inflammatory response; however, the role of miRNAs in periodontal inflammation and bone metabolism in hypertensive animals has not yet been fully elucidated. The purpose of the present study is to investigate the role of MCs and RAS on bone metabolism in SHR submitted to experimental periodontitis. The methodology includes evaluating the role of MCs, miRNAs and RAS involved in osteoblastic and osteoclastic activity in cell culture assays. The prediction is to gain new insights into the response of miRNAs and RAS related to systemic and local mechanisms in periodontal disease and hypertension in relation to changes in bone metabolism. These data will contribute to the development of new drug therapy targets for these diseases.

Scientific publications
(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)
PENHA OLIVEIRA, SANDRA HELENA; BALERA BRITO, VICTOR GUSTAVO; TFAILE FRASNELLI, SABRINA CRUZ; RIBEIRO, BIANCA DA SILVA; FERREIRA, MILENA NUNES; QUEIROZ, DAYANE PRISCILLA; BELTAN, CARLUCI TAIS; LARA, VANESSA SOARES; SANTOS, CARLOS FERREIRA. Aliskiren Attenuates the Inflammatory Response and Wound Healing Process in Diabetic Mice With Periodontal Disease. FRONTIERS IN PHARMACOLOGY, v. 10, JUL 4 2019. Web of Science Citations: 1.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.