甲状腺相关眼病患者眼眶成纤维细胞超微结构及细胞因子分泌功能研究

目的 比较培养的甲状腺相关眼病(TAO)患者、正常人及经活动期TAO患者血清处理后的眼眶成纤维细胞(OFs)在超微结构与分泌细胞因子功能方面的差异。方法 取5例TAO患者与4例正常对照者的眼眶结缔组织和眼外肌进行OFs原代培养,传代后,部分OFs加入活动期TAO患者的血清后再培养。应用透射电镜观察两组OFs的超微结构,应用酶联免疫吸附分析法检测两组培养上清液中的白细胞介素1(IL-1)、肿瘤坏死因子α(TNF-α)、干扰素γ(IFN-γ)。结果 TAO患者与正常人OFs的超微结构未见明显差异;加入血清培养后的OFs的核仁增大、边移,内质网增多,微绒毛增多、变长。TAO患者与正常人培养的OFs上清液中仅检测到IL-1,其量前者明显高于后者;经活动期TAO患者血清处理后的OFs上清液中可检测到IL-1、TNF-α及IFN-γ。结论 TAO患者与正常人的OFs超微结构基本相同。经活动期TAO患者血清处理后的OFs有增殖现象,其分泌细胞因子功能明显增强。

Ultrastructure analysis and cytokines expression of orbital fibroblasts in the patients with thyroid-associated ophthalmopathy

OBJECTIVE: To analyse the ultrastructure and cytokines expression from cultured orbital fibroblasts (OFs) in the patients with thyroid-associated ophthalmopathy (TAO). METHODS: Primary cultured OFs were obtained from 5 patients with TAO and 4 normal control subjects, some of subcultured OFs were treated by patients' serum with active TAO. Ultrastructures of OFs were observed by transmission election microscope. The cytokines in cultured supernatant were detected by enzyme linked immunosorbant assay (ELISA). RESULTS: There were no significant differences of ultrastructure of OFs from TAO patients and normal subjects. Nucleoli enlargement, microvillus prolongation and increase of endoplasmic reticular of OFs were detected after maintaining in culture. The IL-1, TNF-alpha and IFN-gamma were found in supernatant of OFs treated by patients' serum. IL-1 was found in supernatant of OFs in TAO patient and control subjects, and the IL-1 level of former was higher than the controls. CONCLUSION: There are no significant differences in ultrastructure of OFs from patients with TAO and normal subjects. The OFs treated with the serum of TAO patients showed proliferation and increasing cytokines secretion.