Hyperbaric oxygen pretreatment attenuates hepatic reperfusion injury.

Hyperbaric oxygen pretreatment attenuates hepatic reperfusion injury.
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高压氧预处理可减轻肝再灌注损伤。

DOI:
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发表时间:
2008
期刊:
Liver
影响因子:
--
通讯作者:
M. Shyr
M. Shyr
中科院分区:
--
文献类型:
--
作者:
Miin;H. Chen;Steve W. N. Ueng;M. Shyr

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微循环紊乱、能量消耗和脂质过氧化与肝脏缺血再灌注损伤的发生有关。本研究探讨高压氧(HBO)对肝脏缺血再灌注损伤的影响。使用成年雄性斯普拉格-道利大鼠。评估三组:1) 假手术对照(仅剖腹手术,无缺血,无 HBO),n=8; 2) 缺血控制(1小时缺血,2小时再灌注,无HBO),n=8; 3) HBO 预处理(100%,氧气,2.5 atm 绝对压力,90 分钟)加缺血(1 小时缺血,2 小时再灌注),n=8。使用体内显微镜来研究肝脏微循环。测定组织丙二醛(MDA)和三磷酸腺苷(ATP)。与缺血对照组相比,HBO 显着改善了缺血再灌注后的有害损伤。 HBO 减少了贴壁白细胞计数(6.00+/-1.31 细胞/200 微米 vs 11.38+/-2.88 细胞/200 微米),并改善了正弦曲线后小静脉的流速(1.72+/-0.26 毫米/秒 vs 0.83+/-0.19 毫米/秒)。 HBO 还降低了 MDA(1.04+/-0.24 nmol/mg 蛋白质 vs 2.24+/-0.49 micromol/g 蛋白质),并增加了 ATP(2.03+/-0.17 micromol/g 湿重 vs 0.73+/-0.11 micromol/g 湿重)水平。本研究表明,缺血前高压氧可以改善大鼠模型肝脏的缺血再灌注损伤。
Microcirculatory derangement, energy depletion and lipid peroxidation have been related to development of ischemia-reperfusion injury in the liver. This study investigates the effects of hyperbaric oxygen (HBO) on hepatic ischemia-reperfusion injury. Adult, male Sprague-Dawley rats were used. Three groups were evaluated: 1) sham-operated control (laparotomy only, no ischemia, no HBO), n=8; 2) ischemia control (1-h ischemia, 2-h reperfusion, no HBO), n=8; and 3) HBO pretreatment (100%, oxygen, 2.5 atm absolute, 90 min) plus ischemia (1-h ischemia, 2-h reperfusion), n=8. An in vivo microscope was used to investigate hepatic microcirculation. Tissue malondialdehyde (MDA) and adenosine triphosphate (ATP) were determined. In comparison with the ischemia control group, HBO significantly improved harmful insults following ischemia-reperfusion. HBO lessened adherent leukocyte count (6.00+/-1.31 cells/200 microm vs 11.38+/-2.88 cells/200 microm), and improved flow velocity (1.72+/-0.26 mm/s vs 0.83+/-0.19 mm/s) in post-sinusoidal venules. HBO also reduced MDA (1.04+/-0.24 nmol/mg protein vs 2.24+/-0.49 micromol/g protein), and increased ATP (2.03+/-0.17 micromol/g wet wt vs 0.73+/-0.11 micromol/g wet wt) levels. This study demonstrates that HBO before ischemia may ameliorate the ischemia-reperfusion injury of the liver in the rat model.
高压氧对再灌注损伤中中性粒细胞浓度和肺隔离的影响。
DOI: 10.1001/archsurg.1996.01430190078020
发表时间: 1996
期刊: Archives of surgery (Chicago, Ill. : 1960)
影响因子: --
作者:
Zamboni,WA;Wong,HP;Stephenson,LL
通讯作者: Stephenson,LL
休克和损伤后内皮细胞的变化。
DOI: --
发表时间: 1996
期刊: New horizons (Baltimore, Md.)
影响因子: --
作者:
Maier,RV;Bulger,EM
通讯作者: Bulger,EM