Artículos de revistas
Effect of low-intensity laser therapy on mast cell degranulation in human oral mucosa
Date
2009Registration in:
LASERS IN MEDICAL SCIENCE, v.24, n.1, p.113-116, 2009
0268-8921
10.1007/s10103-007-0531-1
Author
SAWASAKI, Iris
GERALDO-MARTINS, Vinicius R.
RIBEIRO, Martha S.
MARQUES, Marcia M.
Institutions
Abstract
Little is known about the physiological mechanisms related to low-intensity laser therapy (LILT), particularly in acute inflammation and subsequent wound healing. The objective of this study was to verify the effect of LILT on mast cell degranulation. Epulis fissuratum tissues from eight patients were used. One part of the lesion was irradiated with an AsGaAl laser (lambda = 670 nm, 8.0 J/cm(2), 5 mW, 4 min). The other part was not irradiated. Then, the specimens were immediately removed, fixed and examined by light microscopy. The number of mast cells was similar in laser-treated samples when compared with non-irradiated specimens. The degranulation indexes of the mast cells observed in the irradiated samples were significantly higher than those of controls (P < 0.05). LILT with the parameters used increased the number of degranulated mast cells in oral mucosa.