Ann Surg Treat Res.  2015 May;88(5):241-245. 10.4174/astr.2015.88.5.241.

Protective effect of ischemic postconditioning against hepatic ischemic reperfusion injury in rat liver

• Yoon SY
• Kim CY
• Han HJ
• Lee KO
• Song TJ

• KMID: 2166991
• DOI: http://doi.org/10.4174/astr.2015.88.5.241

Abstract

PURPOSE
The efficiency of ischemic postconditioning (IPC) was evaluated in a rat model of ischemic liver. Concentration of survivin of liver tissue correlated with the degree of antiapoptosis, so survivin was estimated to evaluate the efficiency of IPC on ischemic reperfusion (IR) injury.
METHODS
Twenty-four healthy rats were divided to three groups (SHAM, IR, and IPC). Rats in the SHAM group displayed no change during 3 hours. Rats in the IR group were ischemic within 1 hour of clamping the left hepatic artery and left portal vein. Reperfusion for 2 hours was then done. IPC group, intermittent 2, 3, 5, and 7 minutes of reperfusion followed by 1 hour of warm ischemia. Two-minute reocclusion was done after each reperfusion. Rat sera were analyzed for AST and ALT, and Western blot analysis of rat liver tissue of rats evaluated malondialdehyde (MDA) and survivin.
RESULTS
MDA in the liver tissue of rats in the IR and IPC group were significantly high than in the liver tissue of the SHAM group (P = 0.003 and P = 0.008, respectively). Survivin was higher in the IPC group than in the SHAM and IR groups (P = 0.021 and P = 0.024, respectively).
CONCLUSION
IPC could not prevent lipid oxidation in liver cell mitochondria, but did aid in the regeneration of ischemic injured liver cells. The results indicate that IPC can suppress the apoptosis of liver cells and reduce reperfusion injury of liver tissue.

Keyword

Ischemic postconditioning; Ischemic reperfusion injury; Liver

MeSH Terms

Animals
Apoptosis
Blotting, Western
Constriction
Hepatic Artery
Ischemic Postconditioning*
Liver*
Malondialdehyde
Mitochondria
Models, Animal
Portal Vein
Rats*
Regeneration
Reperfusion
Reperfusion Injury*
Warm Ischemia
Malondialdehyde

Figure

• 

  Fig. 1 Protein expression level of survivin in groups by Western blot analysis (A) andrelative concentration (B). a)P > 0.05, compared with the SHAM group. b)P < 0.05, compared with both the SHAM and IR groups. IR, Ischemic reperfusion; IPC, ischemic postconditioning.

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