Brief Reports
Copyright ©The Author(s) 2005. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastroenterol. Sep 28, 2005; 11(36): 5725-5731
Published online Sep 28, 2005. doi: 10.3748/wjg.v11.i36.5725
Oral administration of geranylgeranylacetone plus local somatothermal stimulation: A simple, effective, safe and operable preconditioning combination for conferring tolerance against ischemia-reperfusion injury in rat livers
Ning Fan, Guang-Shun Yang, Jun-Hua Lu, Ning Yang, Hai-Bin Zhang
Ning Fan, Guang-Shun Yang, Jun-Hua Lu, Ning Yang, Hai-Bin Zhang, Department of Laparoscopy, Affiliated Eastern Hospital of Hepatobiliary Surgery, Second Military Medical University, Shanghai 200438, China
Author contributions: All authors contributed equally to the work.
Correspondence to: Professor Guang-Shun Yang, Department of Laparoscopy, Affiliated Eastern Hospital of Hepatobiliary Surgery, Second Military Medical University, Shanghai 200438, China. guangshun@smmu.edu.cn
Telephone: +86-21-25070803 Fax: +86-21-25070803
Received: March 11, 2004
Revised: April 1, 2005
Accepted: April 2, 2005
Published online: September 28, 2005
Abstract

AIM: To explore a simple, effective, safe and operable pretreatment for conferring tolerance against ischemia-reperfusion (I-R) injury in rat livers.

METHODS: Forty-five rats were divided into five groups (each group n = 9). Group C: control group; group G: geranylgeranylacetone (GGA) was administered without heat stress; group S: local heat stress alone; group WG: GGA plus whole-body heat stress; group SG: GGA administration plus local heat stress. After completion of the I-R procedure, the ischemic-reperfused liver lobes in five groups were resected and tested for heat shock protein (HSP70) by RT-PCR, Western blotting analysis and immunohistochemical staining. The blood samples were collected for ALT and AST measurement at the end of occlusion of blood supply, 30 min after reperfusion, 24, 48, 72 h after surgery from the inferior vena cava. Survival was monitored for 1 wk.

RESULTS: The production of HSP70 after I-R injury increased, the liver enzyme levels after reperfusion decreased rapidly, and the survival rates increased in groups C-SG.

CONCLUSION: The combination of GGA plus local somatothermal stimulation is a simple, effective, safe and operable pretreatment to induce HSP70 in patients with liver tumor and cirrhosis before hepatectomy and in donors before harvesting graft for liver transplantation.

Keywords: Ischemia-reperfusion injury; Heat shock protein; Geranylgeranylacetone; Local somatothermal stimulation