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Objective To analyze the clinical characteristics of myositis autoantibody detection in the diagnosis of interstitial lung disease (ILD), and explore the diagnosis and treatment of ILD with the help of clinical manifestations combined with antibody results. Methods Sixty-three patients of ILD accurately diagnosed with the help of myositis autoantibody detection were collected retrospectively and divided into three groups: anti-synthetase syndrome associated interstitial lung disease group(ASS-ILD group, n=22), polymyositis/dermatomyositis associated interstitial lung disease group (PM/DM-ILD group, n=18) and interstitial pneumonia with autoimmune features group (IPAF group, n=23). Their clinical characteristics, treatment and prognosis were analyzed and compared. Results The positive rates of Raynaud's phenomenon, joint symptoms, mechanic's hand and anti-ARS antibodies in ASS-ILD group were higher than those in IPAF group (P<0.0167). Compared with PM/DM-ILD group, ASS-ILD group had higher positive rates of Raynaud's phenomenon, cough, dyspnea, respiratory system symptoms as the first manifestation, anti-ARS antibodies but lower positive rates of fever, muscle symptoms, skin/muscle symptoms as the first manifestation (P<0.0167).Compared with IPAF group, PM/DM-ILD group had higher positive rates of muscle symptoms, skin symptoms, skin/muscle symptoms as the first manifestation, anti-ARS antibodies and anti-MDA5 antibody but lower positivity rates of respiratory system symptoms as the first manifestation (P<0.0167). In this study, chest radiological findings of all patients were mainly nonspecific interstitial pneumonia (NSIP). The abnormality in pulmonary functions manifested mainly as diffusion disturbance and restrictive ventilatory dysfunction. 87.3% of all patients were treated with glucocorticoid combined with immunosuppressants. After treatment, 81.0% of these patients showed improvement or stability, while 19.0% showed deterioration or death. The difference in prognosis between the three groups was not statistically significant (P>0.05). Conclusion The detection of myositis autoantibody should be paid more attention in ILD patients. Diagnosis, classification, treatment and prognosis evaluation of ILD could be made with the help of myositis autoantibodies.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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