Objective: To provide reference for clinicians in diagnosis and treatment of antisynthetase syndrome with interstitial pulmonary disease (ASS-ILD) by analyzing the clinical features, imaging features and pulmonary function changes of ASS-ILD patients. Methods: A total of 92 patients with ASS-ILD diagnosed in the Respiratory Center of China-Japan Friendship Hospital from January 2015 to May 2018 were included, clinical manifestations, high-resolution computed tomography (HRCT), pulmonary function test, treatment and outcome were retrospectively analyzed. Results: The average age of the 92 patients was (58.6±12.2) years with a ratio of male to female 1∶1.79. The main types of anti-synthetase antibody were anti-Jo-1 antibody (37 cases, 40.2%) and anti EJ antibody (26 cases, 28.3%). The most common symptoms of ASS-ILD were cough (79 cases, 85.9%), shortness of breath (60 cases, 65.2%), expectoration (54 cases, 58.7%), fever (34 cases, 36.9%), and common signs were craftsman\'s hand (30 cases, 32.6%) and joint pain (23 cases, 25.0%). The most common imaging findings in HRCT were ground-glass opacities(68 cases, 73.9%), reticulations (45 cases, 48.9%), tractive bronchiectasis (40 cases, 43.5%) and consolidation (39 cases, 42.4%). The most common types of ILD were non-specific interstitial pneumonia (NSIP) (63 cases, 68.5%), followed by NSIP-organic pneumonia (OP) (12 cases, 13.0%). The main type of lung function impairment was mild restrictive ventilation dysfunction. There were no significant differences in clinical features, imaging findings and pulmonary function changes in different subtypes of ASS-ILD patients (all P>0.05). Corticosteroids was used in 78 (84.8%) of ASS-ILD patients, and 34 cases (37.0%) were given cyclophosphamide. A total of 91 patients (98.9%) were discharged with improvement and 1 anti-EJ positive patient died. Conclusions: ASS-ILD occurs frequently in middle-aged and old women. Respiratory symptoms, craftsman\'s hands and arthritis are the most common clinical manifestations. The most common imaging types of ILD are NSIP and NSIP-OP. Corticosteroids is commonly used for treatment.
目的： 总结抗合成酶综合征（ASS）合并间质性肺病（ILD）患者的临床特征。 方法： 回顾性分析2015年1月至2018年5月中日友好医院呼吸中心诊断为ASS-ILD患者92例，对其初诊时的临床表现、高分辨率CT（HRCT）影像学特点、肺功能指标以及治疗与转归进行总结分析。 结果： ASS-ILD患者年龄（58.6±12.2）岁（范围：17~83岁），男女比为1∶1.79，抗合成酶抗体分型以抗Jo-1抗体阳性（37例，40.2%）和抗EJ抗体阳性（26例，28.3%）为主。ASS-ILD最常见的症状是咳嗽（79例，85.9%）、气短（60例，65.2%）、咳痰（54例，58.7%）、发热（34例，36.9%），体征常见技工手（30例，32.6%）及关节疼痛（23例，25.0%）。CT影像学上以磨玻璃影（68例，73.9%）、网格影（45例，48.9%）、牵拉性支气管扩张（40例，43.5%）以及实变（39例，42.4%）常见，ILD类型以非特异性间质性肺炎（NSIP）（63例，68.5%）最多见，其次是NSIP-机化性肺炎（OP）（12例，13.0%）。肺功能改变主要为轻度限制性通气功能障碍。不同抗合成酶抗体亚型的ASS-ILD患者之间临床、影像学及肺功能比较差异均无统计学意义（P值均>0.05）。78例（84.8%）患者应用激素治疗，34例（37.0%）使用环磷酰胺。91例（98.9%）患者好转出院，1例抗EJ阳性患者因呼吸衰竭死亡。 结论： ASS-ILD以中老年女性多发，临床表现以呼吸道症状、技工手、关节炎常见，影像学最常见的类型为NSIP和NSIP-OP，临床治疗常应用激素。.

Objective: To describe the clinical and radiological characteristics of antisynthetase syndrome associated interstitial lung disease in patients with different serum anti-aminoacyl-tRNA synthetase antibodies. Methods: We conducted a retrospective analysis of 5 adult patients with antisynthetase syndrome associated interstitial lung disease in Peking Union Medical College Hospital. Their clinical and chest radiological data were analyzed and relevant literatures were reviewed. Results: Among these 5 patients, there were 1 male and 4 females, aged from 32 y to 67 y, with a mean age of 53 y. Cough and exertional dyspnea were the main clinical complaints. Four cases showed mechanic\'s-like hands, and all of the 5 cases had Velcro rales in the basal lungs. None of them showed clubbing. Creatine kinase was elevated in 1 case with anti-Jo-1 synthetase antibody, and anti-nuclear antibody was positive in 4 cases, with different titers from 1∶80 to 1∶320, and anti-Ro-52 antibody was positive in 3 cases. Anti-aminoacyl-tRNA synthetase antibody spectrum analysis showed 1 case with anti-Jo-1, 1 anti-PL-7, 1 anti PL-12, 1 anti-EJ and 1 anti-OJ synthetase antibody, respectively. Chest high resolution CT showed nonspecific interstitial pneumonia pattern in 1 case, and nonspecific interstitial pneumonia pattern with organizing pneumonia pattern in 4 cases. All the cases responded to immunosuppressive therapy including corticosteroids (with starting prednisone dosage more than 1 mg·kg(-1)·d(-1)) plus azathioprine or Mycophenolate mofetil. Conclusions: Antisynthetase syndrome associated interstitial lung disease, characterized by the presence of different anti-tRNA synthetase antibodies, is an increasingly recognized clinical entity. Clinical and radiological features of different subtypes of antisynthetase syndrome are relatively heterogeneous. Nonspecific interstitial pneumonia pattern, nonspecific interstitial pneumonia pattern with organizing pneumonia pattern and organizing pneumonia pattern were common chest HRCT patterns. Prednisone plus immunosuppressive agents are the recommended first line therapy.
目的： 分析常见的不同亚型的抗合成酶综合征相关性间质性肺疾病的临床及影像学表现。 方法： 回顾北京协和医院呼吸内科2015年3月至2017年3月住院的5例不同临床亚型的抗合成酶综合征相关性间质性肺疾病患者，其中男1例、女4例，年龄32～67岁，平均年龄53岁。分析其临床及胸部高分辨率CT的主要特点。 结果： 5例患者均表现为咳嗽、活动后气短，均存在明确的双下肺为主的爆裂音，4例存在\"技工手\" ，均无\"杵状指\" 。1例血清肌酸激酶升高，4例抗核抗体阳性(1∶80～1∶640)，3例RO-52阳性；肌炎抗体谱抗Jo-1、抗PL-7、抗PL-12、抗EJ及抗OJ阳性各1例。1例胸部高分辨率CT表现符合非特异性间质性肺炎，4例表现为非特异性间质性肺炎合并机化性肺炎。所有患者接受起始剂量为≥1 mg·kg(－1)·d(－1)泼尼松联合免疫抑制剂治疗，其中2例使用硫唑嘌呤，3例使用吗替麦考酚酯，所有患者治疗后临床症状和胸部CT表现均明显改善。 结论： 抗合成酶综合征相关性间质性肺疾病逐渐被临床认识，不同亚型的抗合成酶综合征的临床表现和胸部影像学表现可能存在差异，以非特异性间质性肺疾病、非特异性间质性肺炎合并机化性肺炎或机化性肺炎多见，治疗推荐使用糖皮质激素联合免疫抑制剂作为初始治疗。.