Practical Journal of Organ Transplantation(Electronic Version) ›› 2016, Vol. 4 ›› Issue (1): 32-36.
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吴莉 1 ,施东婧 1 ,李津源 2 ,杜洪印 2 ,喻文立 2 ,翁亦齐 2
Abstract:
Objective To explore the protective effect of hydrogen-rich saline on ischemia-reperfusion induced liver injury in rats and the mechanism of this effect. Methods A total number of 24 healthy maleSprague-Dawley(SD)rats age ranging from 8-10 weeks weighting 220-250 g were randomly divided into three groups(n = 8 in each group)using a random number table :sham operated group(Sham group),cold ischemia- reperfusion induced liver injury model group(I/R group)and hydrogen-rich saline treated group(HS group). Laparotomy was performed and the related blood vessels were isolated in Sham group. The liver cold ischemia-reperfusion were induced in I/R and HS groups. Saline or hydrogen-rich saline were injected through inferior vena cava 5 min before portal vein was clamped in I/R or HS group. After the total hepatic ischemic in I/R andHS group,the liver was reperfused with ringer lactate solution(pre-cooled,4℃)at a speed of 6-8 ml/min and a1 mm incision was cut on the infrahepatic vena cava(IHVC)as an outflow tract. The whole anhepatic phase lastedfor 30 min. At 6 h of reperfusion,blood samples were obtained from the inferior vena cava to detect the levels of alanine amino-transferase(ALT),aspartate amino-transferase(AST),tumor necrosis factor-alpha(TNF-α)and interleukin-10(IL-10)in serum. Hepatic specimens were obtained for the determination of malondialdehyde (MDA)and superoxide dismutase(SOD)contents,expression of caspase-3,Bcl-2 and Bax mRNA,and microscopic examination of the pathological changes in hepatic tissues by light microscopy. Results Compared with Shamgroup,the levels of ALT,AST,TNF-α and content of MDA,Bax/Bcl-2,and expression of caspase-3 mRNA in serum were significantly increased,and the level of serum IL-10 and the activity of SOD were decreased in I/R and HS groups〔ALT(U/L):467.3±203.6、275.7±74.0 vs. 73.9±30.1,AST(U/L):929.6±442.7、581.4±143.3 vs. 194.6±72.2,TNF-α(μg/L):0.081 3±0.029 8、0.052 0±0.009 9 vs. 0.027 3±0.004 4,MDA(nmol/mg):1.13±0.10、1.00±0.11 vs. 0.84±0.06,caspase-3(2-ΔΔCt):2.77±0.98、1.46±0.33 vs. 1.00±0.00,Bax/Bcl-2(2-ΔΔCt):1.59±0.34、1.12±0.16 vs. 1.02±0.10,IL-10(μg/L):0.141 5±0.023 3、0.320 6±0.064 8 vs. 0.205 3±0.049 7,SOD(U/mg):194.9±20.4、218.1±16.0 vs. 240.8±16.9,all P < 0.05〕. While compared with I/R group,the levels of ALT,AST,TNF-α in serum and content of MDA,Bax/Bcl-2,and expression of caspase-3 mRNA weredecreased,the level of IL-10 and the activity of SOD were increased in HS group〔ALT(U/L):275.7±74.0 vs. 467.3±203.6,AST(U/L):581.4±143.3 vs. 929.6±442.7,TNF-α(μg/L):0.052 0±0.009 9 vs. 0.081 3±0.029 8,MDA(nmol/mg):1.00±0.11 vs. 1.13±0.10,caspase-3(2-ΔΔCt):1.46±0.33 vs. 2.77±0.98,Bax/Bcl-2(2-ΔΔCt):1.12±0.16 vs. 1.59±0.34,IL-10(μg/L):0.320 6±0.064 8 vs. 0.141 5±0.023 3,SOD(U/mg):218.1±16.0 vs.194.9±20.4,all P < 0.05〕. Conclusion Hydrogen-rich saline can alleviate cold ischemia reperfusion induced liver injury through its selective antioxidant,inhibition of inflammatory response and anti-apoptotic properties.
摘要:
目的 探讨饱和氢气生理盐水对大鼠肝脏冷缺血 / 再灌注损伤(IRI)的保护作用及其机制。方法 清洁级雄性 SD 大鼠 24 只,周龄为 8 ~ 10 周,体重 220 ~ 250 g,采用随机数字表法分为 3 组(n = 8):假手术组(Sham 组)行开关腹操作,并游离相应血管 ;肝脏冷缺血 / 再灌注组(I/R 组)于门静脉阻断前 5 min 经下腔静脉缓慢注射生理盐水(6 ml/kg);饱和氢气生理盐水处理组(HS 组)于门静脉阻断前 5 min 经下腔静脉缓慢注射饱和氢气生理盐水(6 ml/kg)。I/R 组与 HS 组阻断全肝血流后,于肝下下腔静脉开口 1 mm 作为灌注液流出道,用 4℃乳酸林格液经门静脉灌注肝脏。再灌注后 6 h 后经下腔静脉抽取血样,测定血清中丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)含量,通过酶联免疫吸附试验(ELISA)检测肿瘤坏死因子 -α(TNF-α)和白细胞介素 -10(IL-10)浓度,采用硫代巴比妥酸法测定肝组织丙二醛(MDA)含量,采用黄嘌呤氧化酶法测定超氧化物歧化酶(SOD)活性,苏木精 - 伊红(HE)染色,于光镜下观察肝组织病理学表现,荧光定量 PCR 检测天冬氨特异性半胱氨酸蛋白酶 3(caspase-3)、Bcl-2 和 Bax mRNA 的表达情况。结果 与 Sham 组相比,I/R 组和 HS 组血清中 ALT、AST、TNF-α 浓度及肝 组 织 MDA 含 量、caspase-3 和 Bax/Bcl-2 的 mRNA 水 平 均 升 高,I/R 组 血 清 IL-10 浓 度 降 低,HS 组IL-10 含 量 升 高, 肝 组 织 SOD 活 性 降 低〔ALT(U/L):467.3±203.6、275.7±74.0 比 73.9±30.1,AST(U/L):929.6±442.7、581.4±143.3 比 194.6±72.2,TNF-α(μg/L):0.081 3±0.0298、0.052 0±0.009 9 比 0.027 3±0.004 4,MDA(nmol/mg):1.13±0.10、1.00±0.11 比 0.84±0.06,caspase-3(2-ΔΔCt):2.77±0.98、1.46±0.33 比 1.00±0.00,Bax/Bcl-2(2-ΔΔCt):1.59±0.34、1.12±0.16 比 1.02±0.10,IL-10(μg/L):0.141 5±0.023 3、0.320 6±0.064 8 比 0.205 3±0.049 7,SOD(U/mg):194.9±20.4、218.1±16.0 比240.8±16.9, 均 P < 0.05〕。 与 I/R 组 相 比,HS 组 血 清 ALT、AST、TNF-α 浓 度 及 肝 组 织 MDA 含 量、caspase-3 和 Bax/Bcl-2 的 mRNA 水平均降低,血清 IL-10 浓度及肝组织 SOD 活性升高〔ALT(U/L):275.7±74.0 比 467.3±203.6,AST(U/L):581.4±143.3 比 929.6±442.7,TNF-α(μg/L):0.052 0±0.009 9 比 0.081 3±0.029 8,MDA(nmol/mg):1.00±0.11 比 1.13±0.10,caspase-3(2-ΔΔCt):1.46±0.33 比 2.77±0.98,Bax/Bcl-2(2-ΔΔCt):1.12±0.16 比 1.59±0.34,IL-10(μg/L):0.320 6±0.064 8 比 0.141 5±0.023 3,SOD (U/mg):218.1±16.0 比 194.9±20.4,均 P < 0.05〕。结论 饱和氢气生理盐水可通过其选择性抗氧化、抑制炎症反应及抗凋亡特性减轻大鼠肝脏冷 IRI。
吴莉, 施东婧, 李津源, 杜洪印, 喻文立, 翁亦齐 .
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