华西口腔医学杂志

• 基础研究 • 上一篇    下一篇

过量氟对大鼠下切牙发育过程中釉蛋白表达的影响

刘天麟1,王  强1,徐志灵1,郭丽英1,井枫秋1,吴  刚2   

  1. 1.同济大学附属口腔医院  口腔内科,上海 200072;2.浙江大学医学院附属口腔医院  口腔外科,浙江  杭州 310006
  • 收稿日期:2006-08-25 修回日期:2006-08-25 出版日期:2006-08-20 发布日期:2006-08-20
  • 通讯作者: 王 强,Tel:021-56032686-8122
  • 作者简介:刘天麟(1980-),男,安徽人,住院医师,硕士,现在上海市东方医院口腔科工作
  • 基金资助:

    同济大学“十五”、“211”工程建设资助项目(1504102011)

Effect of Overdose Fluoride on the Expression of Enamelin in Rat Mandibular Incisor

LIU Tian-lin1, WANG Qiang1,XU Zhi-ling1, GUO Li-ying1, JING Feng-qiu1, WU Gang2   

  1. 1. Dept. of Oral Medicine,Hospital of Stomatology, Tongji University, Shanghai 200072, China; 2. Dept. of Oral and Maxillofacial Surgery, Hospital of Stomatology, Zhejiang University, Hangzhou 310006, China
  • Received:2006-08-25 Revised:2006-08-25 Online:2006-08-20 Published:2006-08-20

摘要:

目的  研究过量氟对大鼠下切牙发育过程中釉蛋白表达的影响。方法  选择20只Wistar大鼠,随机分成实验组和对照组。饲养8周后处死,利用HE染色和免疫组织化学染色的方法观察过量氟对大鼠成釉细胞形态及釉蛋白表达的影响。结果  实验组大鼠下切牙成釉细胞由原有的高柱状结构变矮,细胞排列成多层,釉基质形成混乱,成釉细胞和成牙本质细胞中釉蛋白表达明显低于对照组,其差异有统计学意义(P<0.01)。结论  过量氟可抑制釉蛋白表达,影响釉质发育。

关键词: 氟, 釉蛋白, 免疫组织化学

Abstract:

 Objective  To observe the effect of overdose fluoride on the expression of enamelin in rat mandibular incisor. Methods  Twenty Wistar rats were divided randomly into two groups. Animals were maintained in standard environment with free access to food and distilled water(control group) or water added with 100 mg/L F-(experimental group). The rats were killed in the eighth week. HE staining was used to observe the morphology of ameloblasts.Immunohistochemical staining was adopted to study the expressions of enamelin in rat incisor. Results  The amelo-blasts of the treated rat were arranged in multi-layer. The ameloblasts in group Ⅱ were thinner than those in groupⅠ. The structure of enamel matrix was in disorder. The expressions of enamelin in ameloblasts and odontoblasts were obviously inhibited in group Ⅱ(P<0.01). Conclusion  The overdose fluoride inhibits the secretion of enamelin and leads to the abnormal development of enamel matrix.

Key words: fluoride, enamelin, immunohistochemistry