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Int. J. Environ. Res. Public Health 2015, 12(11), 13901-13912; doi:10.3390/ijerph121113901

Associations of MMP1, MMP2 and MMP3 Genes Polymorphism with Coal Workers’ Pneumoconiosis in Chinese Han Population

1
Department of Occupational Medicine and Environmental Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
2
Institute of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210029, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Paul B. Tchounwou
Received: 22 July 2015 / Revised: 19 October 2015 / Accepted: 22 October 2015 / Published: 30 October 2015
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Abstract

Coal workers’ pneumoconiosis (CWP) has been associated with abnormalities in the extracellular matrix remodeling, as well as aberrant matrix metalloproteinases (MMPs) in lung tissues. We investigated the association of three functional polymorphisms in MMP gene promoters (MMP1 rs1799750, MMP2 rs2285053 and MMP3 rs522616) with the risk of CWP. A total of 693 CWP cases and 690 controls were included in a case-control study. Genotype analysis was performed by the TaqMan method. Statistically significant differences were found in distributions of MMP3 rs522616 under a recessive model (p = 0.047) between CWP cases and controls. In the stratification analysis, individuals with MMP3 rs522616 GG genotype decreased the risk of CWP (adjusted OR = 0.72, 95% CI = 0.52–0.99) compared to those with AA/AG genotype obviously, particularly among subgroups of no smokers (adjusted OR = 0.64, 95% CI = 0.41–1.00). Furthermore, serum MMP3 protein levels measured with enzyme-linked immune-sorbent assay in the control group was significantly lower than that in the CWP groups (p = 0.02). Extremely lower MMP3 among subjects with the rs522616 GG or AG genotype compared with the AA genotype carriers (p < 0.05, p < 0.01 respectively) in the normal serum. These findings indicate that the MMP3 rs522616 polymorphism may contribute to the etiology of CWP in the Chinese population and MMP3 might be a potential diagnostic biomarker for CWP, additional independent studies are warranted to validate our findings in different populations as well as in a larger series. View Full-Text
Keywords: genetics; MMP1; MMP2 and MMP3; polymorphisms; coal workers’ pneumoconiosis; molecular; epidemiology genetics; MMP1; MMP2 and MMP3; polymorphisms; coal workers’ pneumoconiosis; molecular; epidemiology
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MDPI and ACS Style

Ji, X.; Wang, L.; Wu, B.; Han, R.; Han, L.; Wang, T.; Yang, J.; Ni, C. Associations of MMP1, MMP2 and MMP3 Genes Polymorphism with Coal Workers’ Pneumoconiosis in Chinese Han Population. Int. J. Environ. Res. Public Health 2015, 12, 13901-13912.

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