中国寄生虫学与寄生虫病杂志 ›› 2011, Vol. 29 ›› Issue (2): 5-107-110.

• 论著 • 上一篇    下一篇

人参皂苷Rg3抗血吸虫病肝纤维化作用的实验研究

 曾瑾, 王红, 贾雪梅, 李翠英, 李飞*   

  1. 昆明医学院寄生虫学教研室,昆明 650500
  • 出版日期:2011-04-30 发布日期:2012-09-27

Effect of Ginsenoside Rg3 on Hepatic Fibrosis in Murine Schistosomiasis Japonica

ZENG Jin,WANG Hong,JIA Xue-mei,LI Cui-ying,LI Fei*   

  1. Department of Parasitology,Kunming Medical College,Kunming 650500,China
  • Online:2011-04-30 Published:2012-09-27

摘要: 目的  观察人参皂苷Rg3抗日本血吸虫病肝纤维化的作用和疗效。 方法  54只雄性IcR小鼠随机分为健康对照组(A组)、 感染对照组(B组)、 吡喹酮加人参皂苷Rg3治疗组(C组)和吡喹酮治疗组(D组)等4组,A组18只,其余每组12只。日本血吸虫尾蚴以腹部贴片法经皮肤攻击感染B、C和D组小鼠,每鼠感染尾蚴18~22条。感染后10周,称取各小鼠体重,A、B组小鼠分别取左叶肝组织,于10%甲醛溶液中固定,保存备用。C、D组每鼠吡喹酮一次性灌胃(300 mg/kg)杀虫治疗。吡喹酮治疗次日起,C组每鼠予以人参皂苷Rg3 3 mg/(kg·d)灌胃治疗,连续8周。治疗8周后,处死所有剩余小鼠,在每鼠的左叶肝组织于相同部位取材,石蜡包埋,连续切片(厚度为4 μm),进行苏木素-伊红(HE)染色和苦味酸?鄄酸性品红(VG)染色,观察肝组织病理学变化和肝脏内胶原沉积情况。参考《慢性肝炎肝纤维化半定量记分(SSS)方案》,对小鼠肝脏纤维化病变程度进行评分并作统计学分析,以评定人参皂苷Rg3的治疗效果。 结果  B组小鼠HE染色发现,肝小叶内和汇管区均可见大量虫卵沉积,有嗜酸性脓肿和假结核结节形成,并以汇管区为重;VG染色发现,肝汇管区和虫卵肉芽肿周围可见明显纤维增生,增生的纤维组织主要沿汇管区分布,形成干线型纤维化,部分纤维呈条索状,向小叶内延伸,形成纤维间隔。C组小鼠经人参皂苷Rg3治疗8周后,肝脏仍有不同程度增大,呈暗褐色,质地略韧;肝脏内纤维增生、炎细胞浸润等病变较B组为轻。C组小鼠肝脏胶原面积百分比为(2.32±0.99)%,低于B组[(11.08±4.43)%]和D组[(11.19±4.91)%](均P<0.05)。 C组小鼠SSS评分(2.83±1.09)显著低于B组(7.42±1.16)和D组(8.08±1.76)(均P<0.05)。 结论  吡喹酮治疗后,人参皂苷Rg3具有改善小鼠日本血吸虫病肝纤维化作用。

关键词: 血吸虫病, 肝纤维化, 人参皂苷Rg3

Abstract: Objective   To investigate the therapeutic efficacy of ginsenoside Rg3 on hepatic fibrosis in murine schistosomiasis japonica.  Methods   54 ICR-strain male mice were divided into 4 groups named as normal control group (A), infected control group (B), praziquantel+Rg3 treated group (C) and praziquantel treated group (D). There were 12 mice in each group, but 18 in group A. Mice in groups B,C,and D were infected with 20±2 cercariae of Schistosoma japonicum. At ten weeks post-infection, 10 mice of group A and 12 mice of group B were weighed and  sacrificed. Specimens from left hepatic lobes were taken and fixed in 10% formaldehyde solution. Mice in groups C and D were treated intragastrically with praziquantel at a single dose of 300 mg/kg. At the second day after praziquantel treatment, each mouse in group C was given 3 mg/(kg·d) ginsenoside Rg3 for 8 weeks. The rest mice were sacrificed on 8 weeks after treatment, and liver tissue samples from left hepatic lobes were prepared. The histological changes and collagen fiber deposition in the liver tissue sections were observed with hematoxylin-eosin staining and van gieson staining. Liver fibrosis was graded according to semi-quantitative scoring system (SSS) method.  Results  In group B, many eggs deposited in the hepatic lobules and portal areas, and eosinophilic abscesses and pseudo-tubercles developed in the liver, especially common in portal areas. There were many fibre hyperplasia and deposit inside abbacy and liver flocculus. Pipestem fibrosis formed around the portal areas, and some cord-like fibres extended into hepatic lobules, and formed in the fibrous septa. After 8-week treatment with ginsenoside Rg3, in group C, the livers were initially enlarged, firm and dust-color; and the degree of hepatomegly varied from mild to marked; but the degree of fibre hyperplasia and inflammatory infiltration were mitigated compared with that of group B. Mean percentage of collagen area in group C[(2.32±0.99)%] was lower than that of groups B [(11.08±4.43)%] and D [(11.19±4.91)%](P<0.05). The SSS scores of hepatic fibrosis in group C (2.83±1.09) was lower than that of groups B (7.42±1.16) and D(8.08±1.76)(P<0.05).  Conclusion   Ginsenoside Rg3 shows anti-hepatofibrosis effects in murine schistosomiasis japonica after praziquantel treatment.

Key words: Schistosomiasis japonica, Hepatic fibrosis, Ginsenoside Rg3