摘要
目的 研究单克隆抗独特型抗体NP30主动免疫对血吸虫病虫卵肉芽肿及肝纤维化的影响。方法 实验组ICR小鼠腹腔注射NP30 10 0 μg/次 ,连续免疫 3次 ,对照组腹腔注射SP2 / 0腹水。尾蚴攻击感染后第 4、8、12、16、2 0和 2 4周分别处死小鼠剖取肝脏 ,用VG(VanGieson)组织化学染色 ,Ⅰ型胶原、Ⅲ型胶原和纤维连接蛋白 (FN)免疫组织化学染色 ,应用计算机图像分析系统对肝脏虫卵肉芽肿体积和虫卵肉芽肿内的胶原沉积进行定量测定。结果 尾蚴攻击感染第 12周后 ,实验组虫卵肉芽肿的体积明显小于对照组 ,虫卵肉芽肿细胞组分与对照组明显不同 ,出现两种不典型肉芽肿。VG染色显示实验组虫卵肉芽肿内胶原的平均光密度值明显小于对照组。免疫组织化学显示实验组虫卵肉芽肿内Ⅰ型胶原、Ⅲ型胶原及FN含量均比对照组低。结论 NP30接种可能诱导体液和细胞两种保护性免疫 ,对血吸虫病虫卵肉芽肿具有负调节作用 。
Objective To study the effects of the monoclonal anti idiotypic antibody NP30 active immunization on egg granuloma formation and hepatic fibrosis in Schistosoma japonicum infection. Methods ICR mice were actively immunized with NP30 100 μg ×3 ip. every 10 days while the mice in control group were injected with SP2/0 ascites ip. simultaneously. After cercariae challenging,the mice were killed at the 4th, 8th,12th, 16th, 20th and 24th week, respectively.Mouse livers were removed and stained histochemically with VG and subjected to immunohistochemical assay of collagen type Ⅰ,Ⅲ and fibronectin(FN).The volume of egg granulomas and the content of collagen type Ⅰ,Ⅲ and FN were determined quantitatively by NYD 1000 Image Analysis System. Results The volume of egg granulomas in NP30 immunized group was much smaller than that of control group from the 12th week after cercariae challenge. The cellular components of egg granulomas in NP30 immunized group were significantly different from those of the control group,exhibiting two types of atypical egg granulomas were found.VG stain revealed that the average optical density of collagen in hepatic granulomas of experimental group was lower than that of control group.Immunohistochemical assay revealed that the contents of collagen type Ⅰ,Ⅲ and fibronectin in egg granulomas of experimental group were lower than those of control group. Conclusion NP30 vaccination may induce both cellular and humoral protective immunity to modulate egg granulomas and suppress liver fibrosis of schistosomiasis japonica.
出处
《中国寄生虫学与寄生虫病杂志》
CAS
CSCD
北大核心
2001年第1期33-36,共4页
Chinese Journal of Parasitology and Parasitic Diseases
基金
国家自然科学基金资助课题 (基金编号 3 95 70 6 4 5 )
关键词
日本血吸虫
抗独特型抗体
虫卵肉芽肿
肝纤维化
免疫组织化学
血吸虫病
Schistosoma japonicum , anti idiotypic antibody, egg granuloma, hepatic fibrosis, immunohistochemistry, quantitative image analysis
