Banca de DEFESA: GEYZA LOPES BORGES ARAÚJO
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.DISCENTE : GEYZA LOPES BORGES ARAÚJO
DATA : 08/09/2020
HORA: 14:00
LOCAL: https://conferenciaweb.rnp.br/webconf/ppgbiotec-ufba
TÍTULO:
Effect of LED IV and Violet LED phototherapy on mast cells of the oral mucosa of Wistar rats - Histological study.
PALAVRAS-CHAVES:
Photobiomodulation; LED; Mast cells.
PÁGINAS: 100
GRANDE ÁREA: Outra
ÁREA: Tecnologia e Inovação
RESUMO:
The inflammatory response is defined as a defense reaction of the body against aggressive agents whose ultimate goal is to return homeostasis and recover damaged tissues. Among the main cell types involved in this process, mast cells are found, whose function is to synthesize and release potent chemical mediators of the inflammatory process, through degranulation. It is known that the low power laser can increase the degranulation of mast cells, causing the release of substances such as histamine, serotonin and bradykinin. The aim of this study was to evaluate the effects of infrared LED phototherapies (l 850 ± 10 nm, continuous emission, Dose = 20 J/cm2) and Violet LED (l 405 ± 10 nm, continuous emission, Dose = 20 J/cm2), the total amount of mast cells after light stimulation, as well as their percentage of degranulation, in tissues of the oral mucosa of rats. To this end, 27 Wistar rats were used, which were randomly distributed into three groups: Control Group, LED IV Group (l 850 ± 10 nm) and Violet LED Group (l 405 ± 10 nm). Tissue removal times were oral: immediately, 20 minutes, 45 minutes and 2 hours after the irradiation procedure. After removel, the tissues of oral mucosa were processed for histological analysis with Toluidine Blue staning and count of intact and degranulated mast cells. The results associated with the total number of mast cells in all groups in relation to the control group, being higher in the LED IV group. The degranulation index was higher in the group irradiated with Violet LED.
MEMBROS DA BANCA:
Externo à Instituição - JEAN NUNES DOS SANTOS
Presidente - 3065750 - LUIZ GUILHERME PINHEIRO SOARES
Interno - 1217990 - MARIA CRISTINA TEIXEIRA CANGUSSU