Purpose:
Measure the serum levels of TGF-β1 and TNF-a in dust-exposed group^ the pneumoconiosis group and the normal control group by ELISA, compare the levels of TGF-β1 and TNF-a in the three groups, further explore the role and mechanism of the two cytokines in pneumoconiosis.
Method:
1. Subjects:
Pneumoconiosis group:42 male patients (average age of 49.21+4.53 years, 16.87±7.65 years of dust exposure) with pneumoconiosis diagnosed by the Labor Hygiene and Occupational Diseases Prevention ...