Oral or topical administration of L-arginine changes the expression of TGF and iNOS and results in early wounds healing
AUTOR(ES)
Jerônimo, Márcio Sousa, Barros, Adria do Prado, MoritaI, Vinícius Elord Zen, Alves, Erika Oliveira, Souza, Nathalia Lobão Barroso de, Almeida, Rosane Mansan de, Nóbrega, Yanna Karla Medeiros, Cavalcanti Neto, Florêncio Figueiredo, Amorin, Rivadávio, Borin, Maria de Fátima, Bocca, Anamélia Lorenzetti
FONTE
Acta Cir. Bras.
DATA DE PUBLICAÇÃO
2016-09
RESUMO
ABSTRACT PURPOSE: To evaluate the contribution of L-arginine oral or topical rout of administration in the surgical wound healing process. METHODS: L-arginine was orally or topically administrated to mice after a laparotomy model procedure. The wounds were analyzed to evaluate the granulation tissue by HE analysis, collagen deposition, iNOS and cytokines production by immunochemisyry on wound progress. Mice used in this model were healthy, immunosupressed or diabetic and all of them were treated with different concentration of L-arginine and rout of administration. RESULTS: Suggested that groups treated with L-arginine orally or topically improved wound repair when compared with non-treatad mice. L- arginine treatment stimulated TGF-β and restricted NO production leading to a mild Th1 response and collagen deposition in injured area, when it was orally administrated. Topical administration decreased IL-8 and CCR1 expression by wound cells but did not interfere with TNF-α and IL-10 production, ratifying the decrease of inflammatory response, the oral administration however, presented a higher iNOS and TGF-β expression then. L-arginine treatment also improved the improved the wound healing in immunosupressed or diabetic mice. CONCLUSION: L-arginine administrated orally or topically can be considered an important factor in the recuperation of tissues.
Documentos Relacionados
- Oral administration of L-arginine decreases blood pressure and increases renal excretion of sodium and water in renovascular hypertensive rats
- Oral L-arginine improves endothelium-dependent dilation in hypercholesterolemic young adults.
- Antiatherogenic effects of L-arginine in the hypercholesterolemic rabbit.
- The metabolism of L-arginine and its significance for the biosynthesis of endothelium-derived relaxing factor: L-glutamine inhibits the generation of L-arginine by cultured endothelial cells.
- Effects of NG-nitro-L-arginine and L-arginine on regional cerebral blood flow in the cat.