Second Department of Internal Medicine, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
Lung. 2015 Feb;193(1):79-83. doi: 10.1007/s00408-014-9665-7. Epub 2014 Nov 14.
Anti-PL-7 is an anti-tRNA synthetase antibody, and interstitial lung disease (ILD) is the most frequent complication of anti-PL-7-associated antisynthetase syndrome. However, the features of ILD have not been fully elucidated. The present study retrospectively compares 7 and 15 patients who were positive for anti-PL-7 and anti-Jo-1 antibodies, respectively. The features of ILD did not significantly differ between the two groups, but the ratio of lymphocytes in bronchoalveolar lavage fluid was higher in the Jo-1 than in the PL-7 group. High-resolution computed tomography revealed nonspecific interstitial pneumonia in all patients in the PL-7 group and organizing pneumonia in four of the 15 patients in the Jo-1 group. These findings suggest that pulmonary complications slightly differ between patients expressing anti-PL-7 and anti-Jo-1 antibodies. Further studies are required to clarify the features of ILD associated with PL-7.
抗-PL-7 是一种抗 tRNA 合成酶抗体,间质性肺疾病(ILD)是抗-PL-7 相关抗合成酶综合征最常见的并发症。然而,ILD 的特征尚未完全阐明。本研究回顾性比较了分别抗-PL-7 和抗-Jo-1 抗体阳性的 7 例和 15 例患者。两组间ILD 的特征无显著差异,但支气管肺泡灌洗液中淋巴细胞的比例在 Jo-1 组高于 PL-7 组。高分辨率计算机断层扫描显示 PL-7 组所有患者均为非特异性间质性肺炎,Jo-1 组 15 例患者中有 4 例为机化性肺炎。这些发现表明,表达抗-PL-7 和抗-Jo-1 抗体的患者的肺部并发症略有不同。需要进一步研究来阐明与 PL-7 相关的 ILD 的特征。