Experimental Model of Degloving Injury in Rats Effect of Allopurinol and Pentoxifylline in Improving Viability of Avulsed Flaps
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Citações na Scopus
10
Tipo de produção
article
Data de publicação
2013
Editora
LIPPINCOTT WILLIAMS & WILKINS
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Citação
ANNALS OF PLASTIC SURGERY, v.70, n.3, p.366-369, 2013
Resumo
Background: Degloving injuries may be a challenge when it comes to deciding the surgical approach to be used. Repositioning of the flap and suturing are faster and more straightforward, but often these procedures often lead to total or partial loss of the avulsed flap. Pharmacological agents with vascular properties that enhance the viability of the reattached flap could be beneficial to patients with degloving injuries. Experimental models with which to test this hypothesis are scarce. An experimental model reproducing a degloving injury of the hind limb of rats was developed in our department, and the effects of pentoxifylline (Ptx) and allopurinol (Alp) were assessed. Methods: In all, 3 groups of rats were studied (25 rats each). A hind limb degloving model was used in all groups, resulting in a reverse flow flap. The flap was then repositioned and sutured. The control (Ct) group received only saline solution, the Ptx group received pentoxifylline (25 mg/kg), and the Alp group received allopurinol (45 mg/kg). The rats were observed for 7 days, after which they were killed, and the flap was removed. The total area of the avulsed flap and the necrotic area were measured. Results: The median total flap area (cm(2)) was 5.6 for the Ct group, 5.5 for the Ptx group, and 5.8 for the Alp group (P = 0.9465). Thus, the flaps were similar. The median necrotic flap area (cm(2)) was 3.3 for the Ct group, 2.3 for the Ptx group, and 1.9 for the Alp group (P = 0.0001). There was a statistical difference between the Ct and Ptx groups and the Ct and Alp groups (P < 0.05). Conclusions: The areas of necrosis observed in the degloved flaps of the rats' hind limbs were smaller in the pentoxifylline and allopurinol groups. Although allopurinol seems to be more efficient, the difference was not significant.
Palavras-chave
wounds and injuries, lower extremity, necrosis/etiology, drug utilization, models, animal, plastic
Referências
- ANGEL MF, 1987, ANN PLAS SURG, V18, P494, DOI 10.1097/00000637-198706000-00005
- ARMSTRONG M, 1993, OTOLARYNG HEAD NECK, V109, P668
- Coimbra R, 2004, J TRAUMA, V56, P442, DOI 10.1097/01.TA.0000096642.54111.E8
- Cunha Marcelo Sacramento, 2005, Clinics (Sao Paulo), V60, P213, DOI 10.1590/S1807-59322005000300006
- IM MJ, 1984, PLAST RECONSTR SURG, V73, P276, DOI 10.1097/00006534-198402000-00023
- Isken T, 2009, ANN PLAS SURG, V62, P446, DOI 10.1097/SAP.0b013e31817f01c7
- KUDSK KA, 1981, J TRAUMA, V21, P835, DOI 10.1097/00005373-198110000-00002
- KURATA T, 1978, BRIT J PLAST SURG, V31, P117, DOI 10.1016/S0007-1226(78)90058-9
- Mandel M A, 1981, Ann Plast Surg, V6, P1, DOI 10.1097/00000637-198101000-00001
- MANSON PN, 1983, ANN SURG, V198, P87, DOI 10.1097/00000658-198307000-00017
- Mauad RJ, 2006, J PLAST RECONSTR AES, V59, P387, DOI 10.1016/j.bjps.2005.07.005
- Milcheski Dimas André, 2010, Rev Col Bras Cir, V37, P199, DOI 10.1590/S0100-69912010000300007
- Milcheski DA, 2011, REV SOC BRAS CIR PLA, V26
- Oztuna V, 2006, INJURY, V37, P638, DOI 10.1016/j.injury.2006.02.025
- REES R, 1994, J SURG RES, V56, P162, DOI 10.1006/jsre.1994.1027
- TAMIR G, 1994, BRIT J PLAST SURG, V47, P155, DOI 10.1016/0007-1226(94)90045-0
- [王忠堂 WANG Zhongtang], 2008, [中华整形外科杂志, Chinese Journal of Plastic Surgery], V24, P212
- WARD A, 1987, DRUGS, V34, P50, DOI 10.2165/00003495-198734010-00003
- WIDGEROW AD, 1993, S AFR MED J, V83, P97
- [Anonymous], IM J 1 42Q MAC VERS