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作 者:吴高义[1,3] 陈磊[2] 彭玲燕 朱国雄[1] 陈永进
机构地区:[1]济南军区总医院口腔科,济南250031 [2]济南市口腔医院正畸科 [3]北京口腔种植培训中心 [4]第四军医大学口腔医院综合科
出 处:《中华行为医学与脑科学杂志》2011年第1期46-48,共3页Chinese Journal of Behavioral Medicine and Brain Science
基 金:陕西省自然科学基金(2007C256)
摘 要:目的通过观察心理应激对大鼠颞下颌关节(TMJ)内P物质(SP)和降钙素基因相关肽(CGRP)表达的影响,探讨心理因素与颞颌关节病之间的关系。方法SD大鼠90只,将动物编号,分为3组,每组30只,分别为心理应激组,足部电击组及空白对照组。采用交流箱心理应激动物模型,分别在1周,3周,5周时,取各组大鼠的颞下颌关节,在同一部位的切片,进行免疫组化(SABC法),图像分析;扫描电镜观察各组大鼠TMJ的变化。结果心理应激1,3,5周SP(分别为为124.5±16.9,185.6±1.8,193.5±3.5)和CGRP(分别为185.9±5.3,112.5±5.2,174.3±5.3)的表达差异具有显著性(P〈0.05);扫描电镜显示心理应激后髁状突表面出现胶原纤维暴露且排列紊乱及宽窄不一等结构变化。结论心理应激可使大鼠TMJ内的P物质、CGRP肽能神经纤维的表达发生变化,可能与颞下颌关节病密切相关。Objective To observe the substance P(SP) and calcitonin gene-related peptide(CGRP) expressions in the temporomandibular joints(TMJ) of the rats undergone emotional stress and explore the relationship between emotional stress and temporomandibular joint disorder(TMD). Methods Ninety SD rats were averagely randomly divided into emotional stress (ES) group ( n = 30) , electric foot-shocked (FS) group ( n = 30) and control (CON)group( n = 30). The emotional stress was induced by communication box. The TMJ tissues in ES and CON groups were removed after 1, 3 and 5 weeks of emotional stress for scanning electron microscope (SEM) test and immunohistochemistry test. The SP and CGRP expressions were examined with SABC immunohistochemistry and then analyzed by image analysis system. Results The expressions of SP and CGRP had significant difference after 1 ,3 and 5 weeks emotional stress ( SP : 124.5 ± 16.9,185.6 ± 1.8 and 193.5 ±3.5, respectively ; CGRP : 185.9 ± 5.3,112.5 ±5.2 and 174.3 ±5.3 ,respectively) (P〈0.05). The SEM results showed that there was a series of structural change on the condylar surface after emotional stress. Conclusion The SP and CGRP energy nerve fibers take part in the TMJ pathological process undergone emotional stress.
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