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.

Effects of magnesium isoglycyrrhizinate on liver function and liver regeneration in cirrhotic rats after partial hepatectomy

Objective To investigate the effects of magnesium isoglycyrrhizinate on liver regeneration and hepatic function following partial hepatectomy in thioacetamide induced cirrhotic rats.Methods Forty-five cirrhotic Wistar rats undergoing 2/3 hepatectomy were randomly assigned to control group ( Group A), Group B and Group C starting the day of hepatectomy, rats in Group B were injected 60mg per kg body-weight magnesium isoglycyrrhizina daily intraperitoneally until the day of sacrifice. Rats in Group A recevied same dose of sodium chloride. In Group C, magnesium isoglycyrrhizina was administered daily 3 days before hepatectomy until the rats were sacrificed. Liver function, serum HGF, serum PLA2,BrdU labelling index and percentage of intial liver weight on days 1, 2 and 7 post hepatectomy were assessed. Results Rats in Group A had significantly lower BrdU labelling index and serum HGF level than Group C ( t = 2. 831, P ＜ 0.05; t = 3.427, P ＜ 0.05 ) and a markedly higher level of serum PLA2 than the other groups on day 1 posthepatectomy ( Group B t = 2. 794, P ＜ 0.05; Group C t = 2. 902, P ＜ 0.05 ).Rats in Group A had a lower BrdU labelling index and a more increased level of serum PLA2 than Group B and Group C on day 2 posthepatectomy ( BrdU labelling index: Group B t = 2. 736, P ＜ 0.05; Group C t =3.083, P＜0.05; PLA2: Group B t =2.794, P＜0.05; Group C t =2.902, P＜0.05), but had no significant difference in HGF level with the other two groups. The three groups were similar in ALT, AST,TP and intial liver weight on days 1,2 after operation. On the 7th day posthepatectomy, rats in Group A had a higher level of AST ( Group B t = 4. 508, P ＜ 0.05; Group C t = 2. 967, P ＜ 0.05 ) and a lower level of TP ( Group B t = 2. 838, P ＜ 0.05; Group C t = 2. 743, P ＜ 0.05 ), lower liver weight than the other two groups ( Group B t = 3.316, P ＜ 0.05; Group C t = 4. 093, P ＜ 0.05) but there was no difference between the three groups in BrdU labelling index, HGF and PLA2 level. Rats in Group C had significantly higher BrdU labelling index and serum HGF level than the rats in Group B on day 1 after hepatectomy( t = 2. 831, P ＜0.05; t = 2. 836, P ＜ 0.05 ). Conclusions Magnesium isoglycyrrhizinate inhibits aminopherase release and enhancing liver regeneration in cirrhotic rats after partial hepatectomy.