Critical care medicine · 2010
Hemoperfusion with a high-mobility group box 1 adsorption column can prevent the occurrence of hepatic ischemia-reperfusion injury in rats.
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Yamamoto Tetsu, Ono Takashi, Ito Takashi, Yamanoi Akira, Maruyama Ikuro, Tanaka Tsuneo
Аннотация
OBJECTIVE: High-mobility group box 1, a ubiquitous nonhistone chromosomal protein, is passively released from necrotic cells and actively secreted by inflammatory cells. Extracellular high-mobility group box 1 has recently been recognized to be a mediator of hepatic ischemia-reperfusion injury; however, the kinetics of high-mobility group box 1 during hepatic ischemia-reperfusion and the role of high-mobility group box 1 in ischemia-reperfusion injury still remain poorly understood. This study was designed to assess the localization and the kinetics of high-mobility group box 1 during hepatic ischemia-reperfusion injury and the effects of high-mobility group box 1 adsorption column in hepatic ischemia-reperfusion injury.
DESIGN: A prospective, randomized animal study.
SETTING: University medical center research laboratory.
SUBJECTS: Male Sprague-Dawley rats.
INVESTIGATION: The animals underwent 70% partial hepatic ischemia for 60 or 90 mins and were then reperfused. To investigate the high-mobility group box 1 levels in the serum and in the liver, the animals were killed at predetermined periods. As a lethal model, global hepatic ischemia-reperfusion was induced by portal triad cross-clamping for 30 mins. Hemoperfusion therapy using a cellulofine sulfate bead column (high-mobility group box 1 adsorption column) was performed during global hepatic ischemia.
MEASUREMENTS AND MAIN RESULTS: During 60 mins of 70% hepatic ischemia, nuclear high-mobility group box 1 was translocated to the cytoplasm in hepatocytes; however, serum high-mobility group box 1was not increased. Immediately after reperfusion, the serum high-mobility group box 1 was significantly increased (p < .05). High-mobility group box 1 mediated ischemia-reperfusion injury in not only liver but also the remote organ, lung. Removal of excess high-mobility group box 1 in blood using an adsorption column significantly improved animal survival (p < .03) and liver and lung injuries.
CONCLUSIONS: High-mobility group box 1 plays an important role in the systemic as well as local pathogenesis of hepatic ischemia-reperfusion injury. The removal of excessive high-mobility group box 1 with adsorption column was beneficial and promising option in ischemia-related liver injuries.
DESIGN: A prospective, randomized animal study.
SETTING: University medical center research laboratory.
SUBJECTS: Male Sprague-Dawley rats.
INVESTIGATION: The animals underwent 70% partial hepatic ischemia for 60 or 90 mins and were then reperfused. To investigate the high-mobility group box 1 levels in the serum and in the liver, the animals were killed at predetermined periods. As a lethal model, global hepatic ischemia-reperfusion was induced by portal triad cross-clamping for 30 mins. Hemoperfusion therapy using a cellulofine sulfate bead column (high-mobility group box 1 adsorption column) was performed during global hepatic ischemia.
MEASUREMENTS AND MAIN RESULTS: During 60 mins of 70% hepatic ischemia, nuclear high-mobility group box 1 was translocated to the cytoplasm in hepatocytes; however, serum high-mobility group box 1was not increased. Immediately after reperfusion, the serum high-mobility group box 1 was significantly increased (p < .05). High-mobility group box 1 mediated ischemia-reperfusion injury in not only liver but also the remote organ, lung. Removal of excess high-mobility group box 1 in blood using an adsorption column significantly improved animal survival (p < .03) and liver and lung injuries.
CONCLUSIONS: High-mobility group box 1 plays an important role in the systemic as well as local pathogenesis of hepatic ischemia-reperfusion injury. The removal of excessive high-mobility group box 1 with adsorption column was beneficial and promising option in ischemia-related liver injuries.