Histamine iontophoresis on the viability of random skin flap in rats.
OBJECTIVE
To evaluate the effects of the histamine iontophoresis on the random skin flap viability in rats.


METHODS
Sixty adult male Wistar rats were used. A cranially-based dorsal skin flap measuring 10 x 4 cm was raised and a plastic barrier was placed between the flap and its bed. After the surgical procedure, the animals were randomized into four groups (G1-G4) (n=15 each group) as follows: G1 (control)--sham electrical stimulation, G2 (electrical stimulation)--direct current electrical stimulation, G3 (histamine)--histamine and sham electrical stimulation, and G4 (histamine iontophoresis)--transdermal iontophoresis of histamine. In all groups the procedures were performed immediately after the surgery and on the two subsequent days. The percentage of flap necrosis was measured on the seventh postoperative day.


RESULTS
The mean and the respective standard deviation of the percentage of flap necrosis areas were as follows: G1 (control) - 47.87 +/- 9.13%, G2 - 51.49 +/- 8.19%, G3 - 46.33 +/- 8.32% and G4 - 30.82 +/- 11.25%. The G4 group presented a significantly smaller amount of flap necrosis when compared to the other groups (p<0.001).


CONCLUSIONS
The topical administration of the histamine by iontophoresis was effective to increase the viability of the random skin flaps in rats.
Esteves Júnior
Ivaldo
I
Department of Physical Therapy, Paulista University (UNIP), Sao Paulo, Brazil. ivaldofisio@ig.com.br
Tacani
Pascale Mutti
PM
Liggieri
Victor Cicone
VC
Ruggi
Bruno Grinman
BG
Ferreira
Lydia Masako
LM
Liebano
Richard Eloin
RE
D000287:Administration, Topical; D000818:Animals; D004195:Disease Models, Animal; D006085:Graft Survival; D006632:Histamine / Q000008:administration & dosage*; D007478:Iontophoresis / Q000379:methods*; D007511:Ischemia / Q000517:prevention & control*; D008297:Male; D009336:Necrosis; D011897:Random Allocation; D051381:Rats; D017208:Rats, Wistar; D013524:Surgical Flaps / Q000098:blood supply / Q000473:pathology*
D006632:Histamine