Efeitos das drogas antiinflamatórias não-estereoidais sobre o epitélio bucal e a capacidade de cicatrização / Effects of non-steroidal anti-inflammatory drugs on oral epithelium and wound healing on skin of rats
AUTOR(ES)
Cristiano Nakao
DATA DE PUBLICAÇÃO
2008
RESUMO
Non-steroidal anti-inflammatory drugs (NSAIDs) are widely used for pain relief mostly in inflammatory chronic diseases. One in 7 patients with chronic inflammatory diseases uses NSAIDs, 1 in 5 uses NSAIDs for acute pain. NSAIDs may inhibit cyclooxygenase (COX-1 and COX-2) or COX-2 selectively, and despite their excellent anti-inflammatory and analgesic action, there are many side effects related. Gastrointestinal (GI) problems are the most commmon complaint for conventional NSAIDs, wich are also associated with different cell types apoptosis. The COX-2 selective NSAIDs have less GI problems, but may be associated to risks of cardiovascular events. All of NSAIDs seems to interfere with wound healing, although studies results may show conflicting results. Since NSAIDs are used by large numbers of people, the aim of this study was to evaluate the effects of this medication on the epithelial tissue and during wound healing process. Wistar rats were treated daily with conventional NSAIDs (diclofenac, 3mg/Kg) or selective COX-2 (celecoxib, 1mg/Kg) for a period of 7-14 days. The control group was animals of similar age and weight not treated with NSAIDs. After 7 days in all the animals, control and treated, were made surgical wounds (4cm in diameter) on the shaved back under anesthesia with Tribromoethanol. Oral mucosa and wound healing were histological and histometrically analyzed (3 and 7 days after surgery). The results received appropriated statistical evaluation. It was possible to observe that both NSAIDs lead to changes with acute use, but only selective COX-2 inhibitors tends to get back to normal parameters with long lasting use. Related to wound healing, it was possible to verify that conventional NSAIDs was associated to a slightly delay in wound healing process, which was not observed with selective COX-2 NSAIDs use. It was possible to conclude that caution is needed with the use of NSAIDs. They cause significant changes in oral epithelium and the convenional one causes most signifcant changes with long term use
ASSUNTO(S)
wound healing cyclooxigenases epitélio bucal cicloxigenases antiinflamatórios não esteroidais oral epithelium cicatrização non-steroidal anti-inflammatory
