■类风湿性关节炎(RA)合并间质性肺病(ILD)的患者死亡率增加是众所周知的。关于能够评估RA-ILD患者急性加重或预后的血清标志物的研究很少。这项研究的目的是确定RA-ILD患者的生物标志物与肺部病变之间的关联。
■我们对153例患者的血清样本进行了前瞻性分析,韩国RA-ILD患者的多中心队列血清生物标志物水平,基质金属蛋白酶(MMP-7),表面活性剂蛋白-D(SP-D),和KrebsvondenLungen-6(KL-6)进行测量并与用力肺活量(FVC)相关,根据肺部病变的程度(1级,0%〜25%;2级,26%〜50%;3级,51%〜75%;4级,76%〜100%)半定量解释一氧化碳的扩散能力(DLCO)和计算机断层扫描(CT)的结果。
■MMP-7,SP-D,和KL-6与FVC呈负相关(MMP-7,r=-0267,p=0001;SP-D,r=-0250,p=0002;KL-6,r=-0223,p=0006)和DLCO(MMP-7,r=-0404,p<0001;SP-D,r=-0286,p=0001;KL-6,r=-0226,p=0007)此外,MMP-7,SP-D,和KL-6随着CT上肺部病变的分级而增加(MMP-7,p=0013;SP-D,p<0001;KL-6,p<0001)。
■MMP-7,SP-D,和KL-6可用于评估RA-ILD患者肺部受累的功能和解剖状态。
UNASSIGNED: The increase in mortality in rheumatoid arthritis (RA) patients with interstitial lung disease (ILD) is well known However, there are few studies on serum markers that can evaluate acute exacerbation or prognosis in RA-ILD patients The purpose of this study was to identify the association between biomarkers and lung lesions in patients with RA-ILD.
UNASSIGNED: We analyzed 153 patients with serum samples in a prospective, multicenter cohort of Korean RA-ILD patients The serum levels of biomarkers, matrix metalloproteinase (MMP-7), surfactant protein-D (SP-D), and Krebs von den Lungen-6 (KL-6) were measured and correlated with forced vital capacity (FVC), diffusing capacity for carbon monoxide (DLCO) and the results of computed tomography (CT) CT results were interpreted semi-quantitatively according to the extent of lung lesions (grade 1, 0%∼25%; grade 2, 26%∼50%; grade 3, 51%∼75%; grade 4, 76%∼100%).
UNASSIGNED: MMP-7, SP-D, and KL-6 were negatively correlated with FVC (MMP-7, r=-0267, p=0001; SP-D, r=-0250, p=0002; KL-6, r=-0223, p=0006) and DLCO (MMP-7, r=-0404, p<0001; SP-D, r=-0286, p=0001; KL-6, r=-0226, p=0007) In addition, MMP-7, SP-D, and KL-6 tended to increase with higher grades of lung lesions on CT (MMP-7, p=0013; SP-D, p<0001; KL-6, p<0001).
UNASSIGNED: MMP-7, SP-D, and KL-6 can be used to evaluate the functional and anatomical status of lung involvement in the RA-ILD patients.