免疫性慢性非细菌性前列腺炎大鼠模型的形态学与分子生物学特性

目的:应用大鼠前列腺蛋白提纯液辅以双重免疫佐剂造成实验性慢性非细菌性前列腺炎(CAP)大鼠模型并观察其形态学与分子生物学特性。方法:以大鼠为实验动物,0、30d腹腔注射百白破疫苗,并于皮内多点注射5、10、15mg/ml的大鼠前列腺蛋白提纯液及福氏完全佐剂(FCA),第45d观察各组大鼠前列腺组织的大体、光镜、电镜病理形态学以及炎性基因表达产物的分子生物学等检测指标的改变,确定能够成功造成CAP大鼠模型的有效给药剂量。结果:造模各组中,高剂量模型组大鼠的肿瘤坏死因子α(TNFα),白介素1β(IL1β),IL2,诱导型一氧化氮合成酶(iNOS)等炎性基因表达产物明显增高,光镜、电镜及原位杂交等检测结果表现出明显的慢性炎症病理变化,而另外两个剂量模型组的表现则不如高剂量模型组明显。结论:皮内注射浓度为15mg/ml的大鼠前列腺蛋白提纯液与FCA乳剂(比例为1∶1)的混悬液1.0ml,辅以大鼠腹腔注射百白破疫苗0.5ml可造成免疫性CAP大鼠模型。

Morphological and Molecular Biological Peculiarities of the Experimental Autoimmune Prostatitis Rat Model

Objective: To observe the morphological and molecular biological peculiarities of the experimental autoimmune prostatitis (EAP) rat model made by SC purified prostate protein twice with immune adjuvant. Methods: Male rats were intradermally immunized with a saline extract of male rat prostate glands (RPG) in Freund's complete adjuvant (FCA) and Pertussis-Diphtheria-Tetanus vaccine 0.5 ml i.p. at the 0 and 30th day, and the concentrations of the extract were respectively 5 mg/ml, 10 mg/ml and 15 mg/ml. At the 45th day, the rats were sacrificed and the morphological and molecular biological changes of the prostate specimens were observed to determine the effective concentration of RPG for a successful model. Results: The expression of inflammation genes such as TNF-α, IL-1β, IL-2 and iNOS obviously increased in the high-dosage model group; LM, EM and in situ hybridization revealed appearant chronic inflammation response, but this was not the case in the other two dosage groups. Conclusion: 15 mg/ml RPG mixed with FCA(1∶1) 1.0 ml SC with Pertussis-Diphtheria-Tetanus vaccine 0.5 ml i.p was an effective dosage for the successful model in our experiment. Natl J Androl,2005,11(4):290-295