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Progressive Massive Fibrosis in Coal Miners From 3 Clinics in Virginia
Since 1970, the Coal Workers' Health Surveillance Program (CWHSP), administered by the National Institute for Occupational Safety and Health, has offered periodic chest radiographs to working US coal miners.1 The primary purpose of the CWHSP is early detection of coal workers' pneumoconiosis to prevent progression to disabling lung disease, including progressive massive fibrosis (PMF). By the late 1990s, PMF was rarely identified among miners participating in the CWHSP. However, a 2014 report documented an increase in the prevalence of PMF in Appalachia.2 On February 1, 2017, the director...
Resurgence of Progressive Massive Fibrosis in Coal Miners - Eastern Kentucky, 2016
The prevalence of coal workers' pneumoconiosis fell precipitously after implementation of the Coal Mine Health and Safety Act and reached historic lows in the 1990s, with the most severe form, progressive massive fibrosis (PMF), nearly eradicated. Since that time, increases in the prevalence and severity of coal workers' pneumoconiosis have occurred, especially in central Appalachia. During January 1, 2015–August 17, 2016, a total of 60 patients identified through a single radiologist's practice had radiographic findings consistent with PMF; 49 had their radiograph taken during...
Expression Levels of Surfactant-Associated Proteins and Inflammation Cytokines in Serum and Bronchoalveolar Lavage Fluid Among Coal Miners
A Case-Control Study Objective: To investigate whether the Th1/Th2 balance and expressions of surfactant-associated proteins and cytokines in serum and bronchoalveolar lavage fluid (BALF) are associated with the development of coal workers' pneumoconiosis (CWP). Methods: A case-control study was conducted among 72 CWP cases and 68 controls. Th1 and Th2 populations were measured by flow cytometry. Expressions of surfactant-associated proteins A and D (SPA and SPD) and cytokines in serum and BALF were detected by enzyme-linked-immunosorbent serologic assay. Data were analyzed by t test and logistic...

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