Abstract
One of the most important research topics in plastic surgery is the extension of the length of skin flaps that survive. We have investigated the increase in the length of skin flaps that can be achieved by giving dibutyryl cyclic AMP (DB-cAMP) to rabbits with experimental skin flaps and compared the results with those in animals not given DB-cAMP. Three variables, the arrival of DB-cAMP in the critical area of circulation of the flap (n = 6), changes in the blood flow in the flap (n = 10), and increase in the length of skin flap that survived (n = 30) were investigated by high performance liquid chromatography and laser Doppler flowmetry. DB-cAMP reached the critical area of circulation in the skin flap (dye distance), increased the blood flow within this area (mean (SEM) peak value 30 minutes after operation 1.24 (0.06) ml/min/kg compared with 1.06 (0.02) in control flaps), and extended the length of the flap that survived (mean (SEM) length seven days after operation 66.1 (3.0) mm compared with 60.8 (1.8) mm in the control group). We conclude that DB-cAMP improved the blood flow in skin flaps in rabbits with a consequent increase in the length of skin flap that survived.
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