Tianjin Medical Journal ›› 2023, Vol. 51 ›› Issue (8): 860-863.doi: 10.11958/20221645

• Clinical Research • Previous Articles     Next Articles

Early diagnostic value of serum miR-134-5p and miR-320a combined with pulmonary function index in coal worker pneumoconiosis patients

XIONG Gaocai1(), YANG Yuanfeng2,(), LI Jiasong1, LIU Tingqian1, HE Bingbing1, LIU Zhuoling1   

  1. 1 Department of Respiratory and Critical Care, the Third People's Hospital of Guizhou Province, Guiyang 550008, China
    2 Department of Pharmacy, the Second Affiliated Hospital of Guizhou University of Traditional Chinese Medicine
  • Received:2022-10-12 Revised:2023-02-21 Published:2023-08-15 Online:2023-08-10
  • Contact: E-mail: 369400274@qq.com

Abstract:

Objective To explore the value of serum miR-134-5p and miR-320a combined with pulmonary function indexes in the early clinical diagnosis of pneumoconiosis. Methods Forty cases of coal workers' pneumoconiosis (CWP), 40 cases of coal mine dust exposed physical examination population and 40 cases of healthy physical examination population in the same period were included in this study. Expression levels of serum miR-134-5p and miR-320a were detected by qRT-PCR assay. Lung function indexes were detected in three groups, including maximum ventilation volume (MVV), forced vital capacity (FVC), forced expiratory volume 1 (FEV1), forced expiratory volume 3 (FEV3), FEV1/FVC, FEV3/FVC, maximum mid-expiratory flow (MMEF), peak expiratory flow (PEF), 75 % maximal expiratory flow (MEF75), 50% maximal expiratory flow (MEF50), 25% maximal expiratory flow (MEF25), residual volume (RV), RV/total lung capacity (TLC), functional residual capacity (FRC) and alveolar ventilation (VA). Logistic regression was used to analyze risk factors of CWP in coal mine dust-related operations. Receiver operating characteristic (ROC) curve was used to analyze the early diagnostic value of miRNA combined with pulmonary function index in patients with CWP. Results The expression levels of serum miR-134-5p, miR-320a, MVV, FEV1, FEV1/FVC, MMEF, MEF50, FRC and VA were decreased gradually in the control group, the dust exposure group and the CWP group (P<0.05). Multiple Logistic regression analysis showed that the decrease of FRC was an independent risk factor for CWP in coal mine dust exposure population (P<0.05). miR-134-5p and miR-320a combined with lung function index FRC showed high diagnostic efficacy in predicting CWP disease in coal mine dust-related operations, with an AUC of 0.975 (95%CI: 0.948-1.000). Conclusion The combination of serum miR-134-5p, miR-320a and lung function index FRC has important reference value for the clinical diagnosis in patients with early CWP.

Key words: anthracosis, functional residual capacity, respiratory function tests, miR-134-5p, miR-320a

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