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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.