Abstract
Objective To determine the effects of N-acetylcysteine (NAC) and melatonin, alone and in combination, on McFarlane flap viability in a rat model. Methods Forty Wistar rats were divided into four groups and received daily intraperitoneal injections for one week before surgery: control (sham [n=10]); melatonin (n=10); NAC (n=10); and NAC+melatonin (n=10). One week after surgery, the experiment was terminated and photographs were taken for topographic studies. A transillumination study was performed to observe vascularization in the flaps and biopsies were obtained for histopathological studies. Results Flap viability was significantly greater in the antioxidant- (ie, NAC and melatonin) treated groups compared with the control group; however, there were no significant differences among the groups that received antioxidants. Conclusions Melatonin and NAC are important antioxidants that can be used alone or in combination to increase flap viability and prevent distal necrosis in rats.
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