Peptídeo relacionado ao gene da calcitonina por iontoforese na viabilidade de retalho cutâneo randômico em ratos
Purpose: Assess the effect of the local administration of calcitonin gene-related peptide (CGRP) by iontophoresis on the viability of random skin flap in rats. Methods: Sixty Wistar-EPM 1 rats were submitted to dorsal skin flap of cranial base 10 x 4 cm with interposition of a plastic barrier betwee...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2004 |
| País: | Brasil |
| Institución: | Universidade Federal de São Paulo (UNIFESP) |
| Repositorio: | Repositório Institucional da UNIFESP |
| Idioma: | portugués |
| OAI Identifier: | oai:repositorio.unifesp.br:11600/2287 |
| Acceso en línea: | http://dx.doi.org/10.1590/S0102-86502004000600008 http://repositorio.unifesp.br/handle/11600/2287 |
| Access Level: | acceso abierto |
| Palabra clave: | Receptors, Calcitonin Gene-Related Peptide Surgical Flaps Iontophoresis Rats Receptores Cgrp Retalhos cirúrgicos Iontoforese Ratos |
| Sumario: | Purpose: Assess the effect of the local administration of calcitonin gene-related peptide (CGRP) by iontophoresis on the viability of random skin flap in rats. Methods: Sixty Wistar-EPM 1 rats were submitted to dorsal skin flap of cranial base 10 x 4 cm with interposition of a plastic barrier between the skin flap and the donnor site. The animals were randomly distributed in four groups (n = 15 in each group) and were treated as follows: in group 1 (control), animals were submitted to a simulation of electrical current for 20 minutes; group 2, (iontophoresis placebo) animals were submitted to direct current of 4mA amplitude for 20 minutes; group 3 (absorption control) receive simulation of electrical current for 20 minutes with CGRP on one of the electrodes; group 4 (iontophoretically treated) treated by iontophoresis with CGRP. In all groups the procedures were performed immediately after the surgery and the two subsequent days. Results: The percentage of the necrosis area was calculated in all groups on the seventh postoperative day and results were as follows: group 1- 48%; group 2 - 51%; group 3 - 46% and group 4 - 28%. The statistical analysis presented significant difference when the comparison of group 4 to the other groups. Conclusion: The topical administration of the CGRP by iontophoresis is efficient to increase the viability of the random skin flap random in rats. |
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