| 18795620 |
Zhao C, Dai CL, Xu F, Ju XH, Li XD, Wang CY: [Patterns of hepatic cells death during hepatic ischemia/reperfusion injury in cirrhotic rats]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao. 2008 Aug;30(4):455-9.
OBJECTIVE: To research on the main pattern of hepatic cells death during hepatic ischemia/ reperfusion (I/R) injury in cirrhotic rat. METHODS: Cirrhotic rat model was established by carbon tetrachloride replication. These rats were randomly divided into sham operation group and I/R group. In the I/R group, 70% i/R injury model was established and then the liver samples were taken 0, 1, 6, 24, and 48 hours after reperfusion. Serum alanine aminotransferase (ALT)/aspartate aminotransferase (AST) levels, Na+ - K+ ATPase, and Ca2+ ATPase were compared. the percentage of apoptotic/oncotic hepatic cells was measured with flow cytometry, and the changes in hepatic cellular structures were observed under transmission electron microscope. RESULTS: Compared with the sham operation group, the levels of serum AST and ALT significantly increased in the I/R group (P < 0.05), reaching their peak levels at the 6th hour. The activities of Na+ - K+ ATPase and Ca2+ ATPase dramatically decreased one hour after reperfusion and then gradually recovered (P < 0.05). Hepatic cells mainly suffered oncosis at the early stage after reperfusion (within 6 hours); at the late stage (around 24 hours after reperfusion), apoptosis became the main death pattern. CONCLUSION: Oncosis is the main pattern of hepatic cells death during I/R injury in cirrhotic rat, and the severity of hepatic injury correlates with the oncosis. |
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