小金丸对前列腺炎性疼痛大鼠前列腺组织COX-2表达的影响

目的:观察环氧合酶2(COX-2)在前列腺炎性疼痛大鼠前列腺组织中的表达变化,探讨小金丸治疗前列腺炎性疼痛可能的作用机制。方法:60只雄性Wistar大鼠,随机取10只用作空白组,与其前列腺腹叶注入无菌注射用水,其余50只注射弗氏完全佐剂(CFA)制备前列腺炎性疼痛模型,术毕3d后,随机分为模型组、塞来昔布胶囊组、小金丸高、中、低剂量组,每组10只。空白组与模型组给予蒸馏水0.1g/(kg·d),塞来昔布胶囊组给予塞来昔布胶囊0.1g/(kg·d),小金丸高、中、低剂量组给予小金丸0.8、0.4、0.2g/(kg·d),以灌胃为给药形式,各级药物灌胃前皆配制为混悬液。各组大鼠灌胃均1次/d,连续给药4周后,断颈处死大鼠,无菌条件下摘除前列腺,10%中性甲醛液固定。免疫组化法并结合图形图像分析系统检测前列腺组织COX-2表达的变化。结果:模型组大鼠前列腺组织COX-2呈强表达,小金丸高、中剂量组及对照组较模型组COX-2表达明显降低(P<0.01),小金丸高剂量组COX-2表达较中、低剂量组降低(P<0.01)。结论:小金丸可抑制前列腺炎性疼痛大鼠前列腺组织COX-2的表达,并可能通过此抑制作用而达到缓解疼痛的目的。

Xiaojin Wan Inhibits the Expression of COX-2 in Prostate Tissues of Prostatitis Pain Rats

OBJECTIVE: To study the effect of Xiaojin Wan on the expression of COX-2 in the prostate tissues of rats with prostatitis pain, and the action mechanism of the drug alleviating the prostatitis pain. METHODS: Sixty male Wistar rats were randomized into two groups, 10 as blank controls, injected with aqua pro injection into the ventral part of prostate, and the other 50 as prostatitis pain models, given complete Freund's adjuvant (CFA). Three days later, the pain model rats were again equally divided into 5 subgroups: model control, Celecoxib Capsules, high-, median- and low-dose Xiaojin Wan, receiving intragastric administration of distilled water, Celecoxib Capsules and different doses of Xiaojin Wan respectively for 4 weeks. Then they were killed, the harvested tissues fixed with 10% paraformaldehyde and the changes of the COX-2 expression in the prostate detected with the immunohistochemical technique and graphics video analysis system. RESULTS: The expression of COX-2 was strong in the model group, significantly lower in the high- and median-dose and the Celecoxib Capsules groups than in the model control (P < 0.01) as well as in the high-dose than in the median- and low-dose groups (P < 0.01). CONCLUSION: Xiaojin Wan may alleviate prostatitis pain by inhibiting the expression of COX-2 in prostate tissues.