• J. Surg. Res. · Jan 2017

    Topical vanadate enhances the repair of median laparotomy incisions.

    • Sprague W Hazard, Charles F Zwemer, Donald R Mackay, Srinivas V Koduru, Dino J Ravnic, and H Paul Ehrlich.
    • Department of Anesthesia, Penn State Hershey Medical Center, Hershey, Pennsylvania; Department of Biology, Dickinson College, Carlisle, Pennsylvania.
    • J. Surg. Res. 2017 Jan 1; 207: 102-107.

    BackgroundThere are over two million laparotomies performed in the United States each year with an incisional hernia rate between 2% and 11%. A total of 100,000 ventral hernia repairs are undertaken each year with recurrences as high as 50%.Materials And MethodsFull thickness midline fascia incisions from the xiphoid to the pubic symphysis were made in rats. The fascia and/or muscular layer was sutured closed and a gel with 300 μM of sodium orthovanadate or saline was placed over the suture line with the skin closed over it. On day 10, 1-cm strips from the superior, middle, and inferior regions of the abdominal wall were tested for breaking strength and processed for histology.ResultsThe mean wound breaking strength of vanadate-treated wounds was 18.6 ± 2.7 N compared with 9.4 ± 3.6 N for controls (P < 0.0001). Similar quantities of granulation tissue were deposited in treated and control wounds. Fine green birefringence patterns, characteristic of immature connective tissue, were seen in control samples viewed with polarized light. In contrast, vanadate-treated wounds showed thick yellow-orange birefringence patterns characteristics of more mature connective tissue. Using α-smooth muscle actin immunostaining, myofibroblasts were prominent in control incisions, but few were identified in vanadate-treated incisions.ConclusionsIn rat laparotomy wounds, a single application of vanadate increases wound breaking strength, through enhanced connective tissue organization. These combined data suggest topical application of vanadate immediately after fascial closure will increase wound strength, possibly reducing hernia recurrences in the repaired abdominal wall.Copyright © 2016 Elsevier Inc. All rights reserved.

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