Autor(es):
Pinheiro, Antonio Luiz Barbosa ; Albuquerque Júnior, Ricardo Luiz Cavalcanti de ; Cavalcante, Danielle Rodrigues Ribeiro ; Ribeiro, Maria Amalia Gonzaga ; Pinheiro, Antonio Luiz Barbosa ; Cardoso, Juliana Cordeiro ; Barretto, Sandra Regina ; Dantas, Marx Diego Meneses ; Lima-Verde, Isabel Bezerra ; Araújo, F. E. N. ; Aciole, Gilberth Tadeu dos Santos ; Melo, Cláudia Moura de ; Pinheiro, Antonio Luiz Barbosa ; Albuquerque Júnior, Ricardo Luiz Cavalcanti de ; Cavalcante, Danielle Rodrigues Ribeiro ; Ribeiro, Maria Amalia Gonzaga ; Pinheiro, Antonio Luiz Barbosa ; Cardoso, Juliana Cordeiro ; Barretto, Sandra Regina ; Dantas, Marx Diego Meneses ; Lima-Verde, Isabel Bezerra ; Araújo, F. E. N. ; Aciole, Gilberth Tadeu dos Santos ; Melo, Cláudia Moura de
Data: 2012
Origem: Oasisbr
Assunto(s): Dressing; Polymers; Burn healing; Laser
Descrição
texto completo. acesso restrito. p. 51–59.
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This paper aimed to evaluate the improvement of burn wounds healing by sodium alginate/chitosan-based films and laser therapy. Natural polymers with different biological activities are widely used as film dressings to improve wound healing. Lasers arrays accelerate the healing repair of soft tissue injuries. Burn procedures were performed on the backs of 60 male rats assigned into six groups: untreated (CTR), dressed with cellulose films (CL), dressed with sodium alginate/chitosan-based films (SC), laser-irradiated undressed wounds (LT), laser-irradiated wounds with cellulose (CLLT) and sodium alginate/chitosan-based films (SCLT). Laser therapy was applied for 7 days. Animals of each group were euthanised 8 and 14 days after the burn procedures. The inflammatory reaction was significantly more intense in the CTR group than in the irradiated groups after 8 and 14 days. Laser therapy stimulated myofibroblastic dif- ferentiation in 8 days, with or without dressing films. Combined laser therapy and both dressings improved epithelisation, blood vessels formation and collagenization, promoted rapid replacement of type III for type I collagen and favored the better arrangement of the newly formed collagen fibres. The combination of laser therapy and sodium alginate/chitosan-based dressing improves burn healing, apparently by modulating the epithelisation, blood vessels formation and collagenization processes.
