Document Detail

Effect of gene therapy with vascular endothelial growth factor after abdominoplasty on TRAM flap viability in a rat model.
MedLine Citation:
PMID:  20440155     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The transverse rectus abdominis musculocutaneous (TRAM) flap may develop necrosis, especially in patients with risk factors such as previous abdominoplasty, caused by damage to perforating vessels during surgical procedures. This study was designed from the perspective of using vascular endothelial growth factor (VEGF) gene therapy with plasmid vector after abdominoplasty to stimulate neovascularization of the TRAM flap, thus increasing flap viability.
METHODS: Thirty-two Wistar rats were divided into four groups (n = 8). A right inferiorly based TRAM flap was constructed in all animals and was the only procedure performed in group I (TRAM flap). Animals from groups II (abdominoplasty) and III (plasmid) underwent abdominoplasty and were injected intramuscularly with physiologic saline solution and empty plasmid, respectively. Group IV (VEGF) received intramuscular injection of naked plasmid DNA encoding VEGF-165 during abdominoplasty. The TRAM flap was created 30 days after abdominoplasty.
RESULTS: The mean necrosis was 24.65 +/- 18.13 percent in group I, 62.49 +/- 28.06 percent in group II, 57.80 +/- 25.43 percent in group III, and 18.33 +/- 16.20 percent in group IV. The number of vessels in the TRAM flap was determined by immunohistochemistry using the antibody human heart factor. Groups I and IV had a similar number of vessels, as did groups II and III. Groups I and IV had greater viability and number of vessels than groups II and III.
CONCLUSION: VEGF gene therapy increased viability and vessel number in the TRAM flap created after abdominoplasty in a rat model.
André L P de Freitas; Heitor C Gomes; Bianca C G Lisboa; Victor Arias; Sang W Han; Lydia M Ferreira
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Plastic and reconstructive surgery     Volume:  125     ISSN:  1529-4242     ISO Abbreviation:  Plast. Reconstr. Surg.     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-05-04     Completed Date:  2010-05-25     Revised Date:  2014-10-13    
Medline Journal Info:
Nlm Unique ID:  1306050     Medline TA:  Plast Reconstr Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1343-51     Citation Subset:  AIM; IM    
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MeSH Terms
Abdominal Wall / surgery*
Genetic Therapy*
Genetic Vectors
Rats, Wistar
Rectus Abdominis / blood supply*
Surgical Flaps*
Vascular Endothelial Growth Factor A / genetics*
Reg. No./Substance:
0/Vascular Endothelial Growth Factor A

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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