PMID- 31758424 OWN - NLM STAT- MEDLINE DCOM- 20201119 LR - 20220307 IS - 1434-9949 (Electronic) IS - 0770-3198 (Linking) VI - 39 IP - 2 DP - 2020 Feb TI - Comparative analysis of connective tissue disease-associated interstitial lung disease and interstitial pneumonia with autoimmune features. PG - 575-583 LID - 10.1007/s10067-019-04836-3 [doi] AB - OBJECTIVE: This retrospective clinical study aimed to examine the similarities and differences between connective tissue disease-associated interstitial lung disease (CTD-ILD) and interstitial pneumonia with autoimmune features (IPAF) and to identify the influencing factors of CTD-ILD, with a goal of early detection and active treatment of the disease. METHODS: We conducted a retrospective study of 480 patients: 412 with CTD-ILD and 68 with IPAF. Demographic features, clinical characteristics, laboratory indicators, and chest high-resolution computed tomography (HRCT) imaging data were analyzed. RESULTS: Compared with the IPAF group, the CTD-ILD group contained more women, and the incidences of joint pain, dry mouth/dry eyes, and Raynaud's phenomenon were higher; erythrocyte sedimentation rate (ESR) and D-dimer levels were higher; red blood cell (RBC) and hemoglobin (Hb) levels were lower; a high rheumatoid factor (RF) titer (> 2 times the normal upper limit) was observed, and anti-cyclic citrullinated peptide antibody (anti-CCP), anti-keratin antibody (AKA), antinuclear antibody (ANA), and anti-melanoma differentiation-associated gene 5 antibody (anti-MDA5) levels were higher. Compared with CTD-ILD patients, IPAF patients were more likely to present initially with respiratory symptoms, with higher rates of fever, cough and expectoration, dyspnea, and Velcro crackles; anti-Ro52 titers were higher; incidences of honeycombing opacity, reticulate opacity, patchy opacity, and pleural thickening were greater. Female sex, a high RF titer (> 2 times the normal upper limit), anti-CCP positivity, ANA positivity, and anti-MDA5 positivity were risk factors for CTD-ILD when the odds ratios were adjusted. CONCLUSION: CTD-ILD and IPAF patients differed in demographic features, clinical characteristics, laboratory indicators, and chest HRCT imaging data. Female sex, a high RF titer (> 2 times the normal upper limit), anti-CCP positivity, ANA positivity, and anti-MDA5 positivity were risk factors for CTD-ILD.Key Points* This retrospective clinical study comprehensively compared the demographic features, clinical characteristics, laboratory indicators, and chest HRCT imaging data of CTD-ILD and IPAF patients.* The evidence suggested that female sex, a high RF titer, anti-CCP positivity, ANA positivity, and anti-MDA5 positivity were risk factors for CTD-ILD. FAU - Tian, Mengxue AU - Tian M AD - Department of Rheumatology and Immunology, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing, 400010, China. FAU - Huang, Wenhan AU - Huang W AD - Department of Rheumatology and Immunology, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing, 400010, China. FAU - Ren, Feifeng AU - Ren F AD - Department of Rheumatology and Immunology, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing, 400010, China. FAU - Luo, Lei AU - Luo L AD - Department of Rheumatology and Immunology, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing, 400010, China. FAU - Zhou, Jun AU - Zhou J AD - Department of Rheumatology and Immunology, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing, 400010, China. FAU - Huang, Dongmei AU - Huang D AD - Department of Rheumatology and Immunology, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing, 400010, China. FAU - Tang, Lin AU - Tang L AUID- ORCID: 0000-0002-6406-9563 AD - Department of Rheumatology and Immunology, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing, 400010, China. tanglin1217@163.com. LA - eng GR - grant No. 81771738/National Natural Science Foundation of China/ PT - Comparative Study PT - Journal Article DEP - 20191122 PL - Germany TA - Clin Rheumatol JT - Clinical rheumatology JID - 8211469 RN - 0 (Autoantibodies) SB - IM MH - Aged MH - Autoantibodies/blood MH - Connective Tissue Diseases/blood/*complications/diagnostic imaging MH - Diabetes Mellitus, Type 1/blood/*complications/diagnostic imaging MH - Diagnosis, Differential MH - Female MH - Humans MH - Lung Diseases, Interstitial/blood/diagnostic imaging/*etiology MH - Male MH - Middle Aged MH - Radiography, Thoracic MH - Retrospective Studies MH - Tomography, X-Ray Computed OTO - NOTNLM OT - Autoantibodies OT - Connective tissue disease OT - Interstitial lung disease OT - Interstitial pneumonia with autoimmune features OT - Rheumatic immune disease EDAT- 2019/11/24 06:00 MHDA- 2020/11/20 06:00 CRDT- 2019/11/24 06:00 PHST- 2019/07/09 00:00 [received] PHST- 2019/10/31 00:00 [accepted] PHST- 2019/09/29 00:00 [revised] PHST- 2019/11/24 06:00 [pubmed] PHST- 2020/11/20 06:00 [medline] PHST- 2019/11/24 06:00 [entrez] AID - 10.1007/s10067-019-04836-3 [pii] AID - 10.1007/s10067-019-04836-3 [doi] PST - ppublish SO - Clin Rheumatol. 2020 Feb;39(2):575-583. doi: 10.1007/s10067-019-04836-3. Epub 2019 Nov 22.