阿苯达唑脂质体生发层单抗复合物治疗小鼠细粒棘球蚴病效果观察

目的　评价阿苯达唑免疫脂质体 (IL - Alb)治疗小鼠细粒棘球蚴病的效果。　方法　每只小鼠感染约 10 0 0个细粒棘球绦虫原头蚴 ,80天后随机分为 5组 ,4个治疗组分别给予阿苯达唑 (Alb)、阿苯达唑脂质体 (L-Alb)、阿苯达唑亚砜脂质体 (L - Albso)及 IL - Alb,按原药 10 0 m g/ (kg.d)× 5 d ip,连续 3个疗程 ,另 1组为对照组。治疗效果按囊重抑制率、常规病理切片、超微结构及高效液相色谱法测定囊药含量 4个指标综合评价。　结果　L - Alb治疗组 ,囊重抑制率为 80 .3% ,囊药含量为 2 .18μg/ g,优于 Alb组囊重抑制率为 6 1.2 % ,囊药含量为 0 .76μg/ g;而 IL- Alb组的囊重抑制率为 91.45 % ,囊药含量为 5 .15 μg/ g。组织病理损伤以 IL- Alb组较重。　结论　免疫脂质体作为 Alb载体 ,可增加药物的靶特异性 ,提高 Alb治疗细粒棘球蚴的疗效。

Efficacy of Albendazole Immunoliposome Against Echinococcosis Granulosus in Mice

OBJECTIVE: To evaluate the effect of albendazole immunoliposome (IL-Alb) against Echinococcus granulosus. METHODS: Mice infected with protoscolices of E. granulosus were divided into five groups. Four groups were treated with albendazole (Alb), albendazole liposome (L-Alb), albendazole sulfoxide liposome (L-Albso), and IL-Alb respectively at a dosage of 100 mg (Alb)/(kg.d) x 5 d for 3 courses. The fifth group was established as control. The major criteria for evaluating the effects included a reduction rate of E. granulosus tissue wet weight, histopathological examination of the cysts by both light microscopy and electron-microscopy, and the content of albendazole-sulfoxide in cysts detected by HPLC. RESULTS: The efficacy of albendazole immunoliposome was significantly higher than that of albendazole liposome, and much higher than that of albendazole. The reduction rates of cyst tissue weight of IL-Alb group, L-Alb group and Alb group were 91.5%, 80.3%, 61.2% respectively as compared to control group; the concentration of Albso in cyst tissue of the above groups were 5.15 micrograms/g, 2.18 micrograms/g, 0.76 microgram/g respectively (P < 0.01). The histopathological damages of cysts were also found most severely in the group of IL-Alb. CONCLUSION: Immunoliposome as a targeting carrier may significantly strengthen the therapeutic effect of albendazole on echinococcosis granulosus.