摘要目的 探讨特发性肺纤维化(IPF)的免疫学发病机制.方法 采用免疫组织化学法检测1O例特发性肺纤维化患者(IPF组)和5例肺癌患者癌旁正常肺组织(对照组)中人白细胞抗原(HLA)DR的表达情况.结果 IPF组肺泡上皮及细支气管上皮细胞HLA-DR阳性累积积分为27分,对照组累积积分为2分,IPF肺组织肺泡上皮及细支气管上皮HLA-DR表达上调,与对照组比较差异有统计学意义(Z=-3.002,P=0.001).结论 特发性肺纤维化肺泡上皮及细支气管上皮HLA-DR表达上调,推测其可能在上皮损伤、肺组织的异常修复即肺纤维化过程中起重要作用.

abstractsObjective To study the expression of human leukocyte antigen(BLA)-DR in the lungs of the patients with idiopathic pulmonary fibrosis(IPF),and to explore the possible autoimmunity mechanisms of lung fibrosis.Methods Methods Immunohistochemistry(SP method)was used to detect the expression of HLA-DR in the lung specimens from 10 IPF patients and in 5 specimens of normal lung tissue immediately adjacent to lung carcinomas as controls.Results HLA-DR antigens were expressed in the hyperplastic bronchio-alveolar epithelial cells in IPF,but not in the epithelial cells of the normal control lung tissues.The accumulated positive scores of HLA-DR of the IPF group was 27,significantly higher than that ofthe control group(2,Z=-3.002,P=0.001).Conclusions Inappropriate HLA-DR expression is present in the bronehio-alveolar epithelium in IPF.Immune dysfunction may play an important role in the development of IPF.