Abstract
To assess whether blockade of tumor necrosis factor-alpha (TNF-alpha) influences surgical wound healing in a normal mouse experimental model. Wound healing time course and degree of surgical wound collagenization were measured by morphological techniques and digital image analysis in 80 male SWISS-OF1 mice (40 received subcutaneous etanercept at a dose of 0.1 mg/25 g/ at -7, 0, 7, and 14 days). No significant differences were observed between treated and untreated animals in wound healing, re-epithelialization, or formation of inflammatory infiltrate or granulation tissue at days 7, 15, or 20 after surgery. At 20 days, the collagen area was larger in treated versus untreated mice (109,029 +/- 28,489 microm(2) vs 79,305 +/- 19,798 microm(2), p = 0.026, Mann-Whitney U test). Surgical wounds showed a higher degree of collagenization at 20 days in etanercept-treated versus untreated mice, with no differences in the time course of wound healing. These data suggest that biological therapies to block TNF-alpha do not affect wound healing and do not need to be suspended during the perioperative period.
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