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Published on: August 25, 2017
MMP-9 genetic polymorphism may confer susceptibility to COPD
S Jiang1, Z H Yang1, Y Y Chen1
1Second Department of Respiratory Medicine, Shengjing Hospital of China Medical University, Shenyang, China.
Genetic variations in matrix metalloproteinase-9 (MMP-9) rs3918242 C > T are linked to increased chronic obstructive pulmonary disease (COPD) risk. However, MMP-1 and MMP-3 gene polymorphisms showed no significant association with COPD susceptibility.
Area of Science:
- Genetics
- Pulmonology
- Molecular Biology
Background:
- Chronic obstructive pulmonary disease (COPD) is a major global health burden.
- Matrix metalloproteinases (MMPs) play roles in tissue remodeling and inflammation, implicated in COPD pathogenesis.
- Genetic variations in MMP genes may influence individual susceptibility to COPD.
Purpose of the Study:
- To investigate the association between genetic polymorphisms of MMP-1, MMP-3, and MMP-9 and the risk of developing COPD.
- To conduct a meta-analysis of existing case-control studies to consolidate evidence on these genetic associations.
Main Methods:
- A systematic literature search identified relevant case-control studies.
- Inclusion and exclusion criteria were rigorously applied to select high-quality studies.
- Meta-analysis was performed using Comprehensive Meta-analysis 2.0 software.
- Odds ratios (OR) with 95% confidence intervals (CI) were calculated to assess genetic associations.
Main Results:
- Twelve studies comprising 1533 COPD patients and 1530 healthy controls were included.
- The MMP-9 rs3918242 C > T polymorphism was significantly associated with increased COPD susceptibility (P < 0.05).
- No significant association was found between MMP-1 rs1799750 1G > 2G and COPD risk (P > 0.05).
- No significant association was found between MMP-3 rs3025058 5A > 6A and COPD risk (P > 0.05).
Conclusions:
- The MMP-9 rs3918242 C > T polymorphism is a potential genetic risk factor for COPD.
- MMP-1 rs1799750 1G > 2G and MMP-3 rs3025058 5A > 6A polymorphisms are not significantly associated with COPD risk.
- Further validation with larger sample sizes is recommended to confirm these findings.
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