感觉神经肽在变应性鼻炎发病机制中的作用

The roles of the sense neuropeptides in the mechanism of anergic rhinitis

目的通过对鼻腔蝶腭神经或交感神经切断后的动物进行致敏,观察其症状和鼻腔感觉神经肽的变化,探讨感觉神经肽在变应性鼻炎发病机制和疾病发展中的作用。方法①观察致敏兔鼻黏膜中P物质(substanceP,SP)和降钙素基因相关肽(calcitoningene-relatedpeptide,CGRP)4周内含量变化;②将20只兔分成三组,C组(蝶腭神经切除组,8只),D组(交感神经切除组,8只),E组(无手术干预组,4只)。C、D组术后致敏,2周及4周后各处死4只,取出鼻黏膜,行免疫组化检查。结果①A组致敏兔1～4周内SP和CGRP含量无明显变化;②C组致敏后两周与四周鼻黏膜中SP含量(16.1±0.77,15.02±0.24),E组致敏后2周与4周鼻黏膜中SP含量(20.68±0.01,20.56±1.27)。C组致敏后2周与4周,SP含量较E组明显低(P<0.01),C组致敏后2周和4周SP无明显差异(t=0.37,P>0.05)。D组致敏后2周与4周鼻黏膜中SP含量(34.13±1.45,33.23±1.99);D组致敏后两周和四周SP无明显差异(t=0.16,P>0.05),但较E组都明显增高(P<0.01)。CGRP的含量变化与SP有一致性。结论SP和CGRP与变应性鼻炎发病和发展有相关性。

OBJECTIVE The roles of sense neuropeptides in the allergic rhinitis were investigated by observing the symptoms and changes in the level of the neuropeptides in rabbits sensitized after severing of their sphenoidpalatine or sympathetic nerve. METHODS ①SP and CGRP were observed in nasal mucosa of rabbits in four weeks. ② Twenty rabbits were divided into three groups： group C（sphenoidpalatine nerve severed）,group D（sympathetic nerve severed） and group E（not operated on）.Groups C and D were sensitized three days after the operation. Four rabbits were killed at two and four weeks post-operation in groups C and D. RESULTS ①There was no difference between SP and CGRP levels in four weeks. ②The levels of SP in the nasal mucosa of group C at two and four weeks after sensitization were 16.1±0.77 and 15.02±0.24, respectively. The levels of SP in group D were 34.13±1.45 and 33.23±1.99, respectively. The levels of SP in group E were 20.68±0.01 and 20.56±1.27, respectively. The level of SP in Group C was lower than in Group E. The level of SP in Group D was higher than in Group E. The level of CGRP correlates with the level of SP. CONCLUSION SP and CGRP levels are correlated with the occurrence and development of allergic rhinitis.