〔摘要〕 目的:通过检测IL-6在人牙髓组织中的表达,探讨IL-6与正常及炎症牙髓组织的关系。方法:采用免疫组化(ABC)法,检测正常组8个牙及炎症牙髓组10个牙中IL-6的表达。结果:正常人牙髓组织IL-6染色为阴性,炎症牙髓组织中IL-6染色均呈阳性,主要表达细胞为单核-巨噬细胞,少量血管内皮细胞和成纤维细胞。结论:IL-6与牙髓组织的炎症反应密切相关,是重要的炎症介质之一。
Expression of IL-6 in normal and inflammatory pulpal tissue
Yue Ling,Xiao Mingzhen,Niu Zhongying.
Stomatological College,Fourth Military Medical University, Xi'an 710032
〔Abstract〕 Objective: To study the relationship between IL-6 expression and human pulpal tissue inflammation.Methods:IL-6 expression in 8 samples of normal and 10 of inflammatory pulpal tissue was examined using immunohistochemical techniques.Results:Negative staining of IL-6 was found in all the cases of normal pulpal tissue while positive in all inflammatory pulp.IL-6 expression was found mainly in monocytes-macrophage and in a few vascular endothelial cells and fibroblasts.Conclusion:IL-6 may be an important medium factor in pulpitis.
Key words Interleukin-6;Dental pulp;Pulpitis;Immunohistochemistry
IL-6与炎症反应有着密切关系,在牙周炎、牙龈炎中的作用已经肯定,但有关牙髓炎症中的IL-6表达和分布特征不明确。本组实验采用鼠抗人IL-6单克隆抗体,对人炎症牙髓中IL-6的表达和分布进行研究,探讨IL-6与牙髓炎性病变的关系。
1 材料和方法
1.1 主要试剂
鼠抗人IL-6单克隆抗体(第四军医大学免疫学教研室提供)
ABC试剂盒(Sigma Co, USA)
1.2 实验标本
研究对象为西安秦都口腔医院口腔颌面外科门诊就诊患者,年龄在18~35 岁之间。取因治疗需要而拔除的健康第三磨牙为正常组,临床诊断为慢性牙髓炎需拔除的第三磨牙归为炎症组,并通过组织学切片,HE染色作为分组的病理组织学依据。正常组8个牙,炎症组10个牙。
1.3 切片制作
新鲜离体牙牙髓置Bouin液中固定4 h,梯度乙醇脱水,石腊包埋,制作厚4 μm切片。
1.4 免疫组化染色
石蜡切片经乙醇下降至水,用体积分