nodosin促进大鼠部分肝移植肝细胞再生的实验研究

目的  探讨溪黄草有效成分nodosin对大鼠减体积肝移植术后肝细胞再生的影响。方法  以Wistar大鼠作为供体, SD大鼠作为受体, 采用改良的二袖套法建立大鼠部分肝移植模型, 将24只受体大鼠随机分为nodosin组和对照组。nodosin组于肝移植术后经尾静脉注射nodosin 100μg/ml。在术后3 d和7 d分别处死大鼠取外周血浆及肝脏组织标本。分光光度法检测外周血浆中丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)和白蛋白(ALB)含量; 光学显微镜下观察肝组织形态学改变; 采用免疫组织化学法检测肝组织增殖细胞核抗原(PCNA)抗体的表达水平; 采用蛋白印迹法(Western blot)检测肝组织中磷酸化蛋白激酶(p-AKT)、磷酸化哺乳动物雷帕霉素靶蛋白(p-mTOR)、细胞周期素D1(cyclin D1)、血红素加氧酶(HO)-1蛋白的表达水平; 采用磷脂酰丝氨酸外翻分析(Annexin V法)和dUTP缺口末端标记(TUNEL)法检测肝细胞的凋亡情况。结果  术后3 d和7 d, 与对照组比较, nodosin组大鼠血清中ALT、AST含量较低, ALB含量较高(均为P < 0.05), 同时nodosin能够减轻大鼠肝移植术后肝组织病理损伤。nodosin组的PCNA阳性表达细胞数明显多于对照组(P < 0.05)。nodosin组增殖相关蛋白p-AKT、p-mTOR、cyclin D1和HO-1蛋白表达水平均明显高于对照组(均为P < 0.05)。nodosin组发生凋亡的肝细胞数量和比例明显低于对照组(P < 0.05)。结论  大鼠肝移植术后应用nodosin具有减少肝细胞凋亡数量, 促进肝细胞增殖的作用。     

大鼠小体积肝移植后肝细胞再生的研究

目的 探讨小体积肝移植术后肝再生的情况。方法 建立大鼠30％原位肝移植模型,实验分为肝切除（PH）组、全肝移植（0LT）组和30％小体积肝移植（30％POLT）组,观察1w生存率,并于术后1、2、3、7d检测肝细胞增殖活性、肝功能和肝组织学变化。结果 各组1w生存率均为100％;30％POLT组术后2d达到增殖高峰,峰值与PH组无差异（P〉0．05）;其肝功能酶学指标在术后1、3d明显升高,组织学见肝细胞核分裂极其活跃。结论 冷缺血1h的30％供肝和肝切除后肝脏具有同样的增殖活性,仅增殖高峰稍晚;较短的冷缺血时间以及熟练的手术技术可能对小体积供肝的再生起重要作用。     

Synergistic effect of erythropoietin but not G-CSF in combination with curcumin on impaired liver regeneration in rats

Introduction The effect of erythropoietin (Epo) and granulocyte colony-stimulating factor (G-CSF) alone or in combination with the hepatoprotective antioxidant curcumin (Cur) was evaluated in a model of delayed liver regeneration. Materials and methods Sprague Dawley rats underwent 70% liver resection with simultaneous cecal ligation and puncture and were randomised to five groups: no treatment, G-CSF (100μg/kg), Epo (1,000IU/kg), each alone or in combination with Cur (100mg/kg). Twenty-four hours after surgery, blood and tissue samples were collected. Markers of liver regeneration (liver weight, mitotic index, Ki-67 index), function (bilirubin, bile flow) and hepatocellular damage (liver enzymes, histomorphology) were determined. In addition, cytokine expression and hepatic glutathione concentrations were measured. Results Liver regeneration was not improved by G-CSF or Epo monotherapy. Epo more effectively increased liver weight and regeneration markers, but the difference was not significant. Whereas liver regeneration was slightly inhibited in the G-CSF plus Cur group, Epo plus Cur significantly improved liver regeneration. This was accompanied by reduced oxidative stress. Liver function and the expression of pro-inflammatory cytokines were comparable in all treatment groups. Conclusion In the present model, Epo, at a relatively low dosage, did not improve liver regeneration. However, the combination of Epo and Cur showed a synergistic effect with highly significant stimulation of liver regeneration. German Society of Surgery, Surgical Forum 2008, Best of Abstracts. Daniel Seehofer was supported by grants from the Deutsche Forschungsgemeinschaft (Se1694/2-1). Best of Forum Papers presented at the Annual Meeting of the German Society of Surgery, 22–25 April 2008, Berlin, Germany.     

索拉非尼对肝癌术后早期肝再生的影响

目的研究索拉非尼对肝癌患者术后早期肝再生、肝功能及凝血功能的影响,以及癌旁肝组织的血管内皮生长因子受体2（VEGFR-2）、血管内皮生长因子受体3（VEGFR-3）、血小板衍生的生长因子受体β（PDGFR-β）和原癌基因丝苏氨酸蛋白激酶1（C-Raf-1）的表达水平与肝再生的关系。方法 30例经病理确诊为肝细胞癌的患者,手术切除后接受不同剂量索拉非尼治疗。应用CT测量术后肝脏体积变化,比较不同剂量的索拉非尼对术后1、3个月时肝再生率的影响。分析不同剂量下,服药前及服药后1个月、3个月时患者肝功能及凝血功能的变化。通过免疫组化检测癌旁肝组织中VEGFR-2、VEGFR-3、PDGFR-β和C-Raf-1的表达,分析表达水平与术后1、3个月时肝再生率的相关性。结果索拉非尼服药剂量400 mg/d组的患者术后1个月、3个月时肝再生率平均增加量高于800 mg/d组的患者（P〈0.05）。两组患者服药后3个月时血清AST、ALT明显比服药前升高,血清凝血酶原时间（PT）明显延长（P〈0.05）。术后1、3个月时肝再生率与VEGFR-2、PDGFR-β表达呈负相关（P〈0.05）,VEGFR-2表达对肝再生率的影响最大。结论索拉非尼对肝癌术后早期肝再生有抑制作用,剂量越大抑制效果越明显。VEGFR-2是索拉非尼抑制早期肝再生的主要影响因素。     

大鼠脂肪变性供肝减体肝移植术后的肝再生

目的　探讨大鼠脂肪变性供肝减体肝移植术后的肝再生方式及相关机制。方法　采用 79%标准饲料、2 0 %猪油、1%胆固醇混合喂饲 ,同时以 5 0 %乙醇灌胃每日 1ml/10 0 g ,时间为 4周 ,诱导供肝脂肪变性形成 ,大鼠 60 %减体肝移植模型。观察和比较术后 1、3、7、14d时PCNA、Br dU免疫组织化学及新鲜分离的肝细胞的流式细胞术结果及肝再生率。结果　脂肪变性供肝减体肝移植术后 1、3、7d的肝再生率较正常明显减低 (P <0 .0 1) ;各时点的PCNA标记指数 (P <0 .0 1)和BrdU标记指数差异均有非常显著性 (P <0 .0 1) ;脂变供肝术后的肝细胞增殖指数 (PI)在 7d时最高 (2 6.3 1% ) ,而正常供肝在 3d时最高 (4 2 .0 1% )。结论　大鼠脂肪变性供肝减体肝移植术后肝再生的高峰时间滞后、周期延长。     

两种肝再生模型肝切除术后肝再生指数和肝再生度的实验研究

【摘要】目的　探讨大鼠肝细胞增殖介导肝再生和卵圆细胞增殖介导肝再生两种不同大鼠肝再生模型肝切除术后肝再生指数和肝再生度变化的情况。方法　SD 大鼠随机分为2组: ①肝细胞增殖介导肝再生模型组(PH)②卵圆细胞增殖介导肝再生模型组(2AAF/PH) ,计算两组模型肝切除术后4、8、12、16、20天残肝肝再生度及肝再生指数。结果　两组肝再生度、肝再生指数均在第4天明显升高,12天左右达到高峰,超过再生总量的2/3以上,至20天基本达到原肝重。在4、8、12天同一时间点内,PH组肝再生度比2AAF/PH组高（P<0.05）,而到16天时,2AAF/PH组肝再生度则比PH组高（P<0.05）。在4、8天同一时间点内,PH组肝再生指数比2AAF/PH组高（P<0.05）。在12、16、20天同一时间点内,两组肝再生指数无显著性差异(P>0.05)。结论　肝再生度与肝再生指数是评价肝再生质量变化较直观和准确的指标,肝再生度在反映肝再生规律方面要比肝再生指数更准确。     

人肝再生增强因子基因转导对大鼠肝硬化的保护作用

目的 探讨人肝再生增强因子(augmenter of liverregeneration，ALR)基因转导对肝硬化的保护作用。方法 构建hALR真核表达载体，并以肌肉注射方式转导至硫代乙酰胺诱导的大鼠肝硬化模型中，观察对肝硬化大鼠的代谢支持作用。结果 构建的hALR真核表达载体pchALR肌肉注射后显著降低了血清AST、ALT、ADH水平，延长了生存时间，提高了存活率。结论 人肝再生增强因子基因转导对肝硬化大鼠具有预防和治疗作用，可显著降低血清AST、ALT、ADH水平，延长生存时间，提高存活率。     

重组肝细胞生长因子促进大鼠移植肝细胞的再生

目的探讨术后应用重组肝细胞生长因子(r HGF)对大鼠移植肝细胞再生的促进作用。方法采用改良“二袖套法”建立SD大鼠原位部分肝移植模型,受鼠分为实验组和对照组,术后经尾静脉分别给予r HGF和相同体积的生理盐水,2次/d。两个组分别在术后第1、2、4、7d时随机挑取5只大鼠处死,称取移植物湿重,采血检测血清丙氨酸转氨酶及白蛋白,流式细胞仪检测移植肝的增殖活性,免疫组织化学法检测移植肝Ki-67的表达情况。结果术后第1、2d,实验组移植物湿重较对照组同时间段明显增加;术后第4、7d,实验组血清丙氨酸转氨酶水平较对照组同时间段明显降低,而白蛋白水平较对照组同时间段明显增高;术后第2、4d,实验组的移植肝增殖指数和Ki-67表达较对照组高(P<0.05)。结论大鼠部分肝移植后使用r HGF能够明显促进移植肝细胞的再生。     

冷缺血对大鼠部分肝移植肝再生的影响

目的　研究冷缺血对移植肝再生及肿瘤坏死因子 (TNF α)和白细胞介素 10 (IL 10 )表达的影响。方法　建立稳定的大鼠部分肝移植模型。实验分为 :5 0 %肝切除对照组、冷缺血 30min后部分肝移植组 (实验 1组 )和冷缺血 10h后部分肝移植组 (实验 2组 )。观察各组生存率 ,并分别于术后 1d、2d、4d取肝组织 ,免疫组织化学检测各组增殖细胞核抗原 (PCNA)、TNF α、IL 10的表达 ;对各组肝再生增殖及TNF α和IL 10的表达进行相关性分析 ;探讨TNF α和IL 10的变化对大鼠部分肝移植术后肝再生的影响。结果　 5 0 %肝切除组、冷缺血 30min后部分肝移植组和冷缺血 10h部分肝移植组存活率分别为 10 0 % ,79%、2 9% ;冷缺血 10h部分肝移植组与冷缺血 30min部分肝移植组相比 ,PCNA、TNF α表达降低 (P <0 .0 5 ) ,而IL 10表达增高 (P <0 .0 5 )。结论　随着冷缺血时间的延长 ,降低了部分肝移植术后的肝再生能力和生存率。TNF α和IL 10在移植肝肝再生过程中起重要的调控作用。     

劈离式肝移植术后移植肝再生的研究

目的研究劈离式肝移植术后移植肝组织的再生规律。方法通过CT检查计算劈离式肝移植术后4例受体在不同时间点的肝体积变化,并检查患者移植术后肝功能。结果受体1术后4个月、1年时肝体积分别是标准体积的114%、97%,肝体积再生率为-11·0%、-24·3%;受体2术后4个月、1年肝体积分别是标准体积的96%、100%,肝体积再生率为24·4%、30·0%。受体3术后2个月肝体积是标准体积的86%,肝体积再生率为12·0%;受体4术后2个月肝体积是标准体积的90%,肝体积再生率为20·0%。4例受体术后肝功能均恢复正常。结论劈离式肝移植供肝有较强的再生能力,能满足受体的代谢需要。     

Impact of hepatic vein deprivation on liver regeneration and function after major hepatectomy

Background and aims In extended liver resections, the preservation of vascular and biliary structures of the entire remnant liver is of paramount importance. The impact of venous outflow impairment and its consequences for liver regeneration and function are still a matter of debate. Materials and methods Rats (n = 75) were subjected to a 90% partial hepatectomy (PH), to a 70% liver resection with narrowing of the hepatic outflow of an additional 20% parenchyma (70%+ PH) or to an anatomic 70% PH. Postoperatively hepatocyte proliferation (Ki-67), liver function and survival were assessed. Gene expression analysis for markers of regeneration was determined by in-house complementary (DNA) arrays and quantitative real-time polymerase chain reaction (RT-PCR). Results Ninety percent PH led to a greater regenerative response as shown Ki-67 compared to animals with a 70%+PH (p < 0.05). However, liver function was equally impaired in both groups. Rats with 70% PH showed a greater proliferation index with less hepatic injury and better liver function. While mortality was 0% in the group of 70% PH, rats with 90% PH and 70+PH had a reduced survival of 75% (p < 0.05) Conclusion Venous outflow obstruction leads to an impairment of liver regeneration and liver function. In cases with critically small liver remnants, restoration of an adequate venous outflow may be mandatory.     

大鼠部分肝缺血再灌注损伤后切除对肝再生的影响

目的 观察大鼠部分肝缺血再灌注损伤后切除对残肝再生的影响.方法 将75只健康雄性SD大鼠随机分为5组:肝脏左叶和中叶(约占全肝70%)切除组(Control组)、肝脏左叶和中叶缺血10min再灌注30min后切除组(I10R30组)、类推得到I60R30组、I90R30组、I90R60组.术后6、12、24h等时间点,测定再生肝重量(RLW);自动生化分析仪检测血清丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)含量;酶联免疫吸附试验(ELISA)检测血清肿瘤坏死因子(TNF)-α含量;通过免疫组织化学法检测残肝增殖细胞核抗原(Ki-67)表达.结果 术后12h,I60R30、I90R30和I90R60组RLW值分别为(1.80±0.03)%、(1.82±0.10)%、(1.87±0.05)%;Ki-67值分别为(58.35±2.18)%、(59.73±3.06)%、(62.65±2.24)%,均明显高于对照组(P<0.05).缺血再灌注干预各组ALT和AST明显高于对照组(P<0.05).术后6h和12h,I60R30、I90R30和I90R60组TNF-α明显高于对照组(P<0.05).结论 大鼠即将被切除的肝脏先缺血再灌注后切除,对残肝再生具有促进作用;诱导产生的TNF-α表达量增多是促进肝再生的原因之一.

Abstract：

Objective To investigate the effects of ischemia reperfusion injury before partial hepatectomy on liver regeneration in rats. Methods Seventy-five male healthy SD rats were randomly classified into 5 groups: group control, in which rats were only subjected to 70% hepatectomy; group I10R30, 70% liver hepatectomy after 10 min of ischemia and 30 min of reperfusion in the resected liver; By analogy, group I60R30, group I90R30 and group I90R60 were constructed. At 6th, 12th and 24th h after operation, RLW was determined; serum alanine aminotransferase (ALT) and aspartate transaminase (AST) activities were measured by using autoanalyzer; the levels of serum tumor necrosis factor (TNF)-α were determined by ELISA and the expression level of Ki-67 was detected by using immunohistochemical methods in the residual liver tissues. Results At 12th h after partial hepatectomy, the rate of RLW in group I60R30, group I90R30 and group I90R60 was (1.80±0.03)%, (1.82±0.10)%, (1.87±0.05)% respectively; the rate of Ki-67 was (58.35±2.18)%, (59.73±3.06)%, (62.65±2.24)% respectively, which was significantly higher than that in the group control (P<0.05). The levels of ALT and AST in rats with ischemia reperfusion injury were higher than in the group control (P<0.05). At 6th h and 12th h after operation, the expression levels of TNF-α in groups I60R30, I90R30 and I90R60 were significantly higher than those in the group control (P<0.05). Conclusion Ischemia reperfusion injury in the resected liver before partial hepatectomy could improve liver regeneration of the remnant liver in rats. The high expression of induced TNF-α may be one of the reasons.     

急性肝衰竭大鼠载肝细胞生长因子纳米粒子肝细胞移植后有丝分裂指数和Ki-67表达变化及意义

目的 探讨急性肝衰竭(ALF)大鼠载肝细胞生长因子(HGF)的聚乳酸-氧-羧甲基壳聚糖(PLA-O-CMC)纳米粒子肝细胞移植后有丝分裂指数和Ki-67抗原的表达变化及意义.方法 D-氨基半乳糖腹腔内注射制作大鼠ALF模型,48 h后分别将Ⅰ型胶原(Ⅰ组)、PLA-O-CMC纳米粒子(Ⅱ、Ⅳ组)、载HGF的PLA-O-CMC纳米粒子(Ⅲ组)培养的大鼠肝细胞(均为5×107个,5 ml)移植到ALF大鼠腹腔内.以每日静脉注射HGF 10μg/kg×7 d(Ⅳ组)、5 Ml RPMI 1640腹腔内注射(Ⅴ组)作为对照.观察其14 d存活率、血清及肝组织HGF浓度、肝组织病理及有丝分裂指数(MI)、Ki-67变化.结果移植后14 d Ⅰ～Ⅴ组ALF大鼠的存活率分别为50.00％、68.75％、81.25％、75.00％、18.75％.各纳米移植组高于V组.Ⅲ组3 d时肝组织HGF浓度最高,平均为5882.91 μG／L.Ⅲ组肝组织结构恢复更快,5 d时平均MI 10.20％0、7 d时平均MI 10.20‰、7 d时Ki-67平均标记指数16.8‰,均高于Ⅴ组.结论 应用载HGF的PLA-O-CMC纳米粒子培养的大鼠肝细胞腹腔内移植治疗ALF大鼠能促进肝再生相关抗原表达.

Abstract：

Objective To evaluate the change and significance of Ki-67 antigen expression follow ing hepatocyte transplantation using hepatocyte growth factor (HGF) loaded polylactic acid-O-carboxymethylchitosan (PLA-O-CMC) nanoparticles in rats with acute liver failure (ALF). Methods ALF models of rats were established by D-galactosamine intraperitoneal injection. Rat hepatocytes type Ⅰ collagen suspension (group Ⅰ ),rat hepatocytes co-cultured with PLA-O-CMC nanoparticles ( groups Ⅱ ,Ⅳ ) and rat hepatocytes co-cultured with HGF loaded PLA-O-CMC nanoparticles ( group Ⅱ ) (5 × 107 cells each group,5 ml) were transplanted into the abdominal cavity of SD rats at 48 h after D-Gal injection. Intravenous injection of HGF ( 10 μg/kg for 7 days) ( group Ⅳ ) and RPMI 1640 injection (group Ⅴ ) were used as the negative groups. The 14th-day survival rate of rats,pathological change and mitotic index of liver,Ki-67 antigen labeling index of ALF rat livers were observed. Results The 14th-day survival rate in groups Ⅰ -Ⅴ was 50.00％,68. 75％,81.25％,75.00％,18.75％,and that in nano-transplanted groups was higher than in group Ⅴ. At the 3rd day,the concentration of HGF in liver tissue of group Ⅲ,average 5882. 91 μg/L was the highest. The hepatic lobules structure in group Ⅲ recovered faster. The average mitotic index in group Ⅱ at the 5th day was 10. 20‰ and the average Ki-67 labeling index at the 7th day was 16. 8‰,which were all higher than in group Ⅴ. Conclusion Intraperitoneal transplantation of HGF loaded PLA-O-CMC nanoparticle-attached hepatocytes for treatment of ALF can promote the liver regenerationassociated antigen expression.     

外源性白细胞介素-10对梗阻性黄疸大鼠肝再生的作用

目的 探讨外源性白细胞介素-10(IL-10)对梗阻性黄疸大鼠肝再生的作用.方法 雄性Wistar大鼠随机分为假手术(SO)组、梗阻性黄疸(CJ)组和IL-10组.OJ组和IL-10组结扎切断胆总管建立梗阻性黄疽模型,SO组仅游离胆总管.IL-10组术后第1天开始每天腹腔内注射IL-10(4 μg/kg).实时荧光定量PCR法检测肝组织转化生长因子β1(TGF-β1) mRNA表达,免疫组织化学法检测肝组织增殖细胞核抗原(PCNA)标记指数,并检测血清总胆红素(TBil)、直接胆红素(DBil)、丙氨酸转氨酶(ALT)和天冬氨酸转氨酶(AST)含量.结果 胆总管结扎术后3d,与SO组相比,OJ组大鼠肝组织TGF-β1 mRNA表达、PCNA标记指数及血清转氨酶均明显升高(P＜0.05).胆总管结扎术后7d,与SO组相比,OJ组大鼠上述各项实验指标均进一步升高(P＜0.05).应用IL-10治疗后,与OJ组相比,IL-10组大鼠肝组织TGF-β1 mRNA表达及血清转氨酶均明显降低,而肝组织PCNA标记指数明显升高(P＜0.05).结论 外源性IL-10可通过抑制肝组织TGF-β1的表达而促进梗阻性黄疽大鼠肝再生并改善受损肝功能.     

大鼠肝切除术后肝损伤程度与肝再生状态的动态对比研究

目的：探讨肝切除术后肝损伤程度与肝再生状态的关系。方法：Wistar大鼠随机分为三组：（1）假手术组；（2）正常大鼠肝切除组；（3）肝硬化大鼠肝切除组，建立大鼠肝切除模型，观察围手术期血清和肝组织匀浆液中丙氨酸转氨酶（ALT）和天冬氨酸转氨酶（AST）水平、肝重／体重、肝再生率，以及应用免疫组化方法（SABC法）检测肝组织中增殖细胞核抗原（PCNA）的表达。结果：与正常大鼠相比，肝切除后肝硬化大鼠血清ALT和AST水平升高显著，持续时间较长（P＜0．05）；PCNA在肝切除后肝组织的表达显著延迟（P＜0．05），血清ALT和AST水平与肝再生率呈显著负相关（P＜0．05）。结论：肝损伤程度和肝再生状态呈负相关，肝损伤的程度影响肝再生状态，肝切除后检测血清ALT、AST水平的变化可以间接的了解肝再生情况。     

肠道缺乏胆汁酸对大鼠肝再生的影响

目的 探索肠道缺乏胆汁酸对肝再生的影响.方法 通过喂养大鼠0.2%胆酸(胆酸负荷组)、2%考来烯胺(胆酸缺乏组)建立干扰肠道胆汁酸代谢的动物模型,以喂养标准饲料作为对照组,所有大鼠均行70%肝部分切除术(PH).比较PH后0、1、2、3、7 d三组大鼠的肝脏再生情况,并检测法尼酯衍生物X受体FXR及其靶基因胆汁酸合成限速酶CYP7a1的mRNA表达.结果 胆酸缺乏组的肝再生率在PH后3、7 d显著低于胆酸负荷组和对照组(P＜0.05),1 d时PCNA和Ki-67标记指数(22.21%±2.31%、17.25%±6.50%)显著低于胆酸负荷组(44.4%±4.92%、30.83%±3.91%)和对照组(38.74%±6.42%、27.04%±7.22%),且标记指数高峰延迟.在PH后,胆酸缺乏组FXR mRNA表达显著低于其他两组,而FXR的靶基因CYP7al的mRNA则随时间升高,明显高于其他两组.结论 肠道缺乏胆汁酸可延迟肝脏再生,并伴随FXR mRNA表达下降.     

冷保存对大鼠部分移植肝再生的影响

目的探讨冷保存对大鼠部分肝移植术后肝再生的影响。方法健康SD大鼠分为Ⅰ组（肝切除组）、Ⅱ组（冷保存1h部分肝移植组）和Ⅲ组（冷保存8h部分肝移植组）。观察各实验组生存率，比较各组术后1、6、12、24、48、72、168h肝质量／体质量比率、肝再生率、有丝分裂指数及增殖细胞核抗原表达。结果Ⅰ、Ⅱ、Ⅲ组7d存活率分别为100％、90％、40％；Ⅲ组术后2～3d大鼠肝质量／体质量比率、肝再生率、有丝分裂指数较Ⅰ、Ⅱ组明显偏低（P〈0．05）；Ⅲ组术后12h内增殖细胞核抗原表达较其余两组明显偏低（P〈0．05），48h才达高峰，至第7天阳性表达仍处高水平。结论长时间冷保存降低了部分肝移植术后的肝再生能力和大鼠术后生存率。     

Postoperative biochemical liver function after major hepatic resection in children

Background/Purpose

There are no detailed reports of the profile of biochemical liver function tests (LFTs) after partial hepatectomy in children. The study aims to establish normal profiles of standard LFTs after major liver resection in noncirrhotic children; the effects of preoperative chemotherapy were also analyzed.

Methods

Clinical and biochemical data were collected from a consecutive series of children who had undergone a primary major liver resection for a hepatic tumor. Chemotherapy details were recorded. Children who had more than 4 liver segments resected were compared with those undergoing lesser resections. Those with and without preoperative chemotherapy were also compared.

Results

A total of 22 children underwent major liver resection at a median age of 24 months (range, 2 weeks to 16 years). Fifteen received preoperative chemotherapy. Peak derangements in all standard LFTs occurred on day 1 to day 2 postoperatively. Normal plasma levels of bilirubin and albumin were present by day 5, international normalized ratio and alkaline phosphatase by day 7, and alanine aminotransferase by 1 to 2 weeks. Peak alanine aminotransferase and international normalized ratio values tended to be higher in children having more extensive liver resections. Preoperative chemotherapy given up to 3 weeks before surgery had no major effect on LFT recovery profiles. Hypophosphatemia was maximal on day 2.

Conclusions

Postoperative LFTs showed a more rapid resolution than typically seen after partial hepatectomy in adults. Preoperative chemotherapy had no major effects on postresection LFT profiles.     

异甘草酸镁对肝硬化大鼠肝部分切除术后肝功能及肝再生的影响

目的 研究异甘草酸镁对肝硬化大鼠部分肝切除术后肝功能和肝再生的影响.方法 45只肝硬化Wistar大鼠行2/3肝部分切除,并随机分为对照组(A组)、治疗组(B组)、术前3 d治疗组(C组).手术当天起,B组给予腹腔注射异甘草酸镁(60mg·kg-1·d-1),A组给予同等剂量生理盐水,C组在手术前3 d即给药(60 mg·kg-1·d-1).各组大鼠分别于术后1、2、7 d处死,检测肝功、血清肝细胞生长因子(HGF)及磷脂酶A2(PLA2)、5-溴脱氧尿苷(BrdU)标记指数、肝再生率.结果 A组在术后第1天,BrdU标记指数及HGF均低于C组(分别t=2.831,3.427,均P＜0.05),而PLA2高于B、C组(分别t=2.794,2.902,均P＜0.05);在术后第2天A组BrdU标记指数均低于B、C组(分别t=2.736,3.083,均P＜0.05),HGF水平与其他两组比较,差异均无统计学意义,PLA2仍高于B、C组(分别t=2.794,2.902,均P＜0.05);A组术后第1、2天ALT、AST、TP水平及肝再生率与B、C组比较,差异均无统计学意义;术后第7天A组AST高于其他两组(A组与B组比较t=4.508,P＜0.05;A组与C组比较t=2.967,P＜0.05),TP水平及肝再生率则均低于B、C组(TP:A组与B组比较t=2.838,P＜0.05;A组与C组比较t=2.743,P＜0.05);肝再生率:(A组与B组比较t=3.316,P＜0.05;A组与C组比较t=4.093,P＜0.05),而BrdU标记指数、HGF、PLA2三组间比较,差异均无统计学意义.B组术后第1天BrdU标记指数及HGF均低于C组(t=2.831,P＜0.05;t=2.836,P＜0.05).结论 异甘草酸镁可降低肝硬化大鼠部分肝切除术后转氨酶水平,改善肝脏功能,促进肝细胞增生.