The Effect of Natrium Hyaluronate Applied Locally for Pelviureteral Anastomoses

Abstract

Objectives: This study aimed to investigate the effect of natrium hyaluronate (NH) on fibrous tissue formation and wound healing in experimental pelviureteral anastomosis (PUA). Materials and methods: Eighteen rabbits were divided equally into three groups: surgical (S), sham (Sh), and NH. A 1-cm length of the ureteropelvic segment was resected through a laparotomy incision and then anastomosis was performed. The rabbits were injected with saline (Sh group) and NH (NH group) into anastomoses lines after the surgical procedure. The S group did not receive any medication during their procedure. Intravenous pyelography was carried out on postoperative day 21. The rabbits were sacrificed and dissected under a dissecting microscope and examined for acute inflammation (AI), chronic inflammation (CI), granulation tissue amount (GTA), granulation tissue fibroblast maturation (GTFM), collagen deposition (CD), neovascularization (N), re-epithelialization (R), and peripheral tissue reaction (PTR) in the anastomosis lines 3 weeks later. Main findings: There were no significant differences in the GTFM scores in the S group compared with those in the NH group. In the NH group, N scores were higher than they were in the S group. Re-epithelialization in the NH group was higher than it was in the S group. Principle conclusions: NH did not decrease fibrosis, but increased important parameters in wound healing such as neovascularization and re-epithelialization in an experimental model of PUA in rabbits.

• natrium hyaluronate
• pelviureteral anastomoses
• neovascularization
• re-epithelialization

ACKNOWLEDGMENTS

We thank Dr. T. Kemal Şahin for his help with the statistical analysis. This study was supported by Selcuk University Scientific Research Projects (grant 2011.09401092).

Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of this article.