摘要
目的 探讨羟乙基淀粉130/0.4(HES130/0.4)对大鼠肝脏缺血/再灌注损伤的保护作用及其机制.方法 40只雌性SD大鼠随机分为4组:假手术组(Sham组)、缺血/再灌注组(IR组)、缺血/再灌注+7.5%高渗盐水组(IR+ HS组)、缺血/再灌注+羟乙基淀粉组(IR+ HES组),每组10只.IR+ HES和IR+ HS组在肝缺血60 min后分别静脉持续泵入HES130/0.4、7.5% HS(13 ml/kg),再灌注120 min.收集血液进行血清丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)测定,取部分肝组织行超氧化物歧化酶(SOD)、丙二醛(MDA)测定及病理学检查.结果 与Sham组比较,血清ALT、AST、肝组织MDA等指标在IR组[(481.64±86.32) IU/L、(793.16±86.51) IU/L、(6.45±0.63) nmol/(mg·蛋白)]、IR+HS组[(461.44±76.35) IU/L、(784.58±81.05) IU/L、(6.25±0.69) nmol/(mg·蛋白)]及IR+ HES组[(230.23±51.85) IU/L、(330.14±23.52) IU/L、(5.04±0.62) nmol/(mg·蛋白)]均升高(P< 0.05);SOD活性[(129.35±17.05)、(133.64±16.60)、(160.25±28.80) U/(mg·蛋白)]降低(P<0.05);肝组织病理学评分升高(P<0.05).结论 给予羟乙基淀粉130/0.4(HES130/0.4)对大鼠肝脏缺血/再灌注损伤具有保护作用,其机制可能与加速氧自由基清除,降低氧自由基介导的脂质过氧化反应有关.
Objective To observe the protective effect and mechanism of hydroxyethyl starch 130/ 0.4 (HES130/0.4) against early injury of hepatic ischemia/reperfusion in rats.Methods Forty female SD rats were randomly divided into 4 groups:sham operation group (Sham group),ischemia/reperfusion group (IR group),ischemia/reperfusion + 7.5% hypertonic saline group (IR + HS group),and ischemia/reperfusion + hydroxyethyl starch group (IR + HES group),n =10 each.The rats in IR + HES group and IR + HS group were subjected to hepatic ischemia for 60 min,followed by intravenous infusion of HES 130/0.4 and 7.5% HS (13 ml/kg),and finally 120 min of reperfusion.Serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were determined.Superoxide dismutase (SOD),malondialdehyde (MDA) and histopathological changes in the liver tissue were examined.Results As compared with Sham group,serum ALT and AST,and liver MDA in the IR group [(481.64 ±86.32),(793.16 ± 86.51) IU/L,and (6.45 ±0.63) nmol/(mg·prot)],IR + HS group [(461.44 ±76.35),(784.58 ± 81.05) IU/L,and (6.25 ±0.69) nmol/(mg·prot)] and IR + HES group [(230.23 ±51.85),(330.14 ± 23.52) IU/L,and (5.04 ± 0.62) nmol/(mg· prot)] were significantly increased (P 〈 0.05) ; SOD activity [(129.35 ± 17.05),(133.64 ± 16.60) and (160.25 ± 28.80) U/(mg· prot)] reduced (P〈0.05) ; liver histopathology scores were increased (P〈0.05).Conclusion HES 130/0.4 has protective effects on hepatic ischemia/reperfusion in rats,which may be related to accelerate the elimination of oxygen free radicals,and reduce oxygen free radical-mediated lipid peroxidation.
出处
《中华实验外科杂志》
CAS
CSCD
北大核心
2014年第12期2735-2737,共3页
Chinese Journal of Experimental Surgery
关键词
羟乙基淀粉
肝脏缺血
再灌注损伤
氧自由基
Hydroxyethyl starch
Liver ischemia
Reperfusion injury
Oxygen free radicals