Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9607015 | Journal of Photochemistry and Photobiology B: Biology | 2005 | 5 Pages |
Abstract
Today's scientific interest in tissue engineering for organ transplantations and regeneration from stem cells, allied with recent observations on biostimulation of tissues and cells by laser radiation, stands as a strong motivation for the present work, in which we examine the effects of the low power laser radiation onto planarians under regenerative process. To investigate those effects, a number of 60 amputated worms were divided in three study groups: a control group and two other groups submitted to daily 1 and 3Â min long laser treatment sections at â¼910Â W/m2 power density. A 685Â nm diode laser with 35Â mW optical power was used. Samples were sent to histological analysis at the 4th, the 7th and the 15th days after amputation. A remarkable increase in stem cells counts for the fourth day of regeneration was observed when the regenerating worms was stimulated by the laser radiation. Our findings encourage further research works on the influence of optical radiation onto stem cells and tissue regeneration.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Bioengineering
Authors
Sandra Cristina de Souza, Egberto Munin, Leandro Procópio Alves, Miguel Angel Castillo Salgado, Marcos Tadeu Tavares Pacheco,