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Updated: Mar 21, 2026
Microsurgical Venous Pouch Arterial-Bifurcation Aneurysms in the Rabbit Model: Technical Aspects
Published on: May 11, 2011
The effects of bevacizumab on intestinal anastomotic healing in rabbits
Hayato Nakamura1, Yukihiro Yokoyama2, Keisuke Uehara1
1Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan.
Purposes:
The aim of this study was to investigate the effects of the preoperative administration of BV on the healing process of intestinal anastomosis in a rabbit model.
Methods:
Twenty male white rabbits were randomly divided into two groups. The control group received saline 1 week before surgery, and the BV group received intravenous BV 1 week before surgery. Each rabbit underwent an enteroenterostomy and a colocolostomy. On postoperative day 7, the bursting pressures of the anastomoses, CD31 and α-smooth muscle actin (α-SMA) staining by immunohistochemistry, the gene expression of α-SMA, and collagen deposition using Picrosirius Red at the site of anastomosis were evaluated.
Results:
The bursting pressure of small bowel anastomoses was significantly lower in the BV group than in the control group (control 184 ± 10 mmHg vs. BV 140 ± 9 mmHg; p = 0.004). The microvessel counts in the anastomotic tissue were significantly lower in the BV group than in the control group in both the small bowel (p = 0.023) and colon (p = 0.008). The expression of α-SMA, and the degree of collagen deposition decreased in the anastomotic tissue in the BV group compared with the control group.
Conclusion:
The preoperative use of BV may therefore negatively affect the rigidity of intestinal anastomosis.
