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  • Title: Effect of early wound excision on changes in plasma nitric oxide and endothelin-1 level after burn injury: an experimental study in rats.
    Author: Chen X, Soejima K, Nozaki M, Tanabe Y, Sakurai H.
    Journal: Burns; 2004 Dec; 30(8):793-7. PubMed ID: 15555791.
    Abstract:
    The purpose of this study was to evaluate effects of early wound excision on changes in NO and endothelin-1 (ET-1) level in the plasma after extensive burn injury. The effects on vascular permeability and hepatic blood flow (HBF) were also assessed. Male Wistar rats were used for this study. A 30% total body surface area (TBSA) third-degree burn was made on the back. Then animals were divided into four groups. Burn group (n = 13), burn alone; infusion group (n = 13), burn injury and fluid resuscitation; early excision group (n = 13), burn injury, total wound excision at 30 min after the injury followed with immediate allogenic skin graft and fluid resuscitation; and the sham group (n = 15). The sham group and the early excision group did not show significant changes in the NO and ET-1 level in plasma during experimental period, while the burn group and the infusion group showed significant increase in the NO and ET-1. The early excision group also did not show hypovolemia, and the significant decrease in the HBF. These data suggest that the increased NO and ET-1 in plasma following thermal injury were originated from burned tissue and the removal of these injured tissue has beneficial effect on the vascular permeability and the changes in HBF.
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