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J Korean Surg Soc. 2012 Nov;83(5):298-306. English. Original Article.
Choi KK , Cho JA , Kim SH , Lee SW , Min SO , Kim KS .
Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Department of Surgery, Gachon University of Medicine and Science, Incheon, Korea.
Department of Pathology, Yonsei University College of Medicine, Seoul, Korea.
Graduate Program of Nano Science and Technology, Graduate School of Yonsei University, Seoul, Korea.
Department of Surgery, Yonsei University College of Medicine, Seoul, Korea.

PURPOSE: To elucidate the characteristic gene transcription profiles among various hepatic ischemia conditions, immediately transcribed genes and the degree of ischemic injury were compared among total ischemia (TI), intermittent clamping (IC), and ischemic preconditioning (IPC). METHODS: Sprague-Dawley rats were equally divided into control (C, sham-operated), TI (ischemia for 90 minutes), IC (ischemia for 15 minutes and reperfusion for 5 minutes, repeated six times), and IPC (ischemia for 15 minutes, reperfusion for 5 minutes, and ischemia again for 90 minutes) groups. A cDNA microarray analysis was performed using hepatic tissues obtained by partial hepatectomy after occluding hepatic inflow. RESULTS: The cDNA microarray revealed the following: interleukin (IL)-1beta expression was 2-fold greater in the TI group than in the C group. In the IC group, IL-1alpha/beta expression increased by 2.5-fold, and Na+/K+ ATPase beta1 expression decreased by 2.4-fold. In the IPC group, interferon regulatory factor-1, osteoprotegerin, and retinoblastoma-1 expression increased by approximately 2-fold compared to that in the C group, but the expression of Na+/K+ ATPase beta1 decreased 3-fold. CONCLUSION: The current findings revealed characteristic gene expression profiles under various ischemic conditions. However, additional studies are needed to clarify the mechanism of protection against IPC.

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