The Effect of Bovine Basic Fibroblast Growth Factor on Skin Flap Survival in Rats

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Abstract
Basic fibroblast growth factor (bFGF) was prepared from bovine pituitary glands and evaluated for its effect on the viability of pedicle skin flaps in rats. Pedicle flaps measuring 3 x 7.5 cm and based cephalad were created on the backs of animals. The treatment group received bFGF in saline solution intradermally by Dermo-jet injection 30 minutes before flap elevation. Skin flaps treated with a single application of 80 U of bFGF demonstrated a significant increase in viability from 40.8% to 69.7% of the flap area (p less than 0.001); the flaps treated with 16 U of bFGF exhibited little improvement. Intradermal administration of bFGF to pedicle skin flaps produced an increase in viability that approximates the increase obtained by a surgical delay procedure; treatment of flaps with exogenous bFGF may offer advantages over surgical delay procedures.

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