金口宝对兔口腔溃疡模型的影响

目的 探讨金口宝对兔口腔溃疡的治疗效果及其作用机制.方法 在60只实验用SPF级新西兰大白兔中随机抓取6只作为溃疡模型的鉴定,其余随机等分为3组:对照组(NC组)、生理盐水药膜组(NS组)、金口宝药膜组(JK组).用40％的冰醋酸溶液烧灼兔口腔颊膜复制口腔溃疡模型.观察在造模当天及给药的第3、5、7天兔口腔溃疡的变化情况,利用逆转录PCR检测兔口腔颊部黏膜组织中表皮生长因子(EGF)水平,使用HE染色观察兔口腔溃疡局部病理组织学变化.结果 与NS组比较,在给药的第3、5、7天JK组可以显著减小溃疡面积(P＜0.01).与NC组比较,NS组、JK组兔口腔颊部黏膜组织中EGF水平明显升高(P＜0.01),但JK组EGF水平较NS组升高快,两组比较差异有统计学意义(P＜0.01).在给药的第3、5、7天,兔口腔溃疡HE染色切片显示,JK组较NS组炎症细胞明显减少,成纤维细胞明显增生,上皮增生情况良好.结论 金口宝可以明显改善兔口腔溃疡症状并促进溃疡愈合,金口宝可能是通过调节口腔溃疡时EGF水平而增强口腔溃疡的修复能力.

Effect of Jinkoubao on rabbit oral ulcer model

Objective To explore the therapeutic effect of Jinkoubao on oral ulcer in rabbits and its action mechanism.Methods Among 60 SPF NewZealand rabbits,6 cases were randomly selected for the ulcer model identification,and the rest was randomly and equally divided into 3 groups:the control group (NC group),normal saline drug film group (NS group) and Jinkoubao film group (JK group).The rabbit model of oral ulcer was constructed by applying 40 ％ glacial acetic acid to burn rabbit oral mucosa for duplicating the oral ulcer model.of the change situation of oral ulcer was observed on the same day for constructing model,on 3,5,7 d after medication.The EGF level in oral mucosal tissue was detected by using RT-PCR and the local histopatho1ogical changes in oral ulcer was observed by using HE staining method.Results Compared with the NS group,the ulcer area on 3,5,7 d after medication in the JK group was significantly deceased (P＜0.01).Compared with the NS group,the EGF level in oral buccal mucosal tissue in the NS group and JK group was markedly increased (P＜0.01).But the EGF level increase in the JK group was faster than that in the NS group,the difference was statistically significant(P＜0.01).The HE staining section of rabbit oral ulcer on 3,5,7 d after medication showed that the inflammatory cells decrease in the JK group was more obvious than that in the NS group,fibroblasts proliferation was obvious and epithelial hyperplasia was good.Conclusion Jinkoubao could greatly improve the symptoms of oral ulcer in rabbits and promotes its healing,which is possible to strengthen the repair capacity of oral ulcer by regulating the EGF level.