Ethyl Pyruvate Protects Colonic Anastomosis From Ischemia-Reperfusion Injury

Author:

Unal B.1,Karabeyoglu M.2,Huner T.3,Canbay E.4,Eroglu A.2,Yildirim O.2,Dolapci M.2,Bilgihan A.5,Cengiz O.2

Affiliation:

1. Department of Surgery, Faculty of Medicine, Inonu University, Malatya, Turkey

2. Department of Second General Surgery, Numune Education and Research Hospital, Ankara, Turkey

3. SanliUrfa Government Hospital, SanliUrfa, Turkey

4. Istanbul University, Istanbul Medical Faculty, Department of Surgery, Istanbul, Turkey,

5. Department of Biochemistry, Gazi University, Faculty of Medicine, Ankara, Turkey

Abstract

Ethyl pyruvate is a simple derivative in Ca+2- and K+-containing balanced salt solution of pyruvate to avoid the problems associated with the instability of pyruvate in solution. It has been shown to ameliorate the effects of ischemia-reperfusion (I/R) injury in many organs. It has also been shown that I/R injury delays the healing of colonic anastomosis. In this study, the effect of ethyl pyruvate on the healing of colon anastomosis and anastomotic strength after I/R injury was investigated. Anastomosis of the colon was performed in 32 adult male Wistar albino rats divided into 4 groups of 8 individuals: (1) sham-operated control group (group 1); (2) 30 minutes of intestinal I/R by superior mesenteric artery occlusion (group 2); (3) I/R+ ethyl pyruvate (group 3), ethyl pyruvate was administered as a 50-mg/kg/d single dose; and (4) I/R+ ethyl pyruvate (group 4), ethyl pyruvate administration was repeatedly (every 6 hours) at the same dose (50 mg/kg). On the fifth postoperative day, animals were killed. Perianastomotic tissue hydroxyproline contents and anastomotic bursting pressures were measured in all groups. When the anastomotic bursting pressures and tissue hydroxyproline contents were compared, it was found that they were decreased in group 2 when compared with groups 1, 3, and 4 ( P < .05). Both anastomotic bursting pressure ( P = .005) and hydroxyproline content ( P < .001) levels were found to be significantly increased with ethyl pyruvate administration when compared with group 2. When ethyl pyruvate administration doses were compared, a significant difference was not observed ( P > .05). Ethyl pyruvate significantly prevents the delaying effect of I/R injury on anastomotic strength and healing independent from doses of administration.

Publisher

SAGE Publications

Subject

Surgery

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