MS susceptibility is not affected by single nucleotide polymorphisms in the MMP9 gene

Matrix metalloproteinases (MMPs) family gene polymorphisms and the risk of multiple sclerosis: systematic review and meta-analysis

Background

Several studies have reported the association between polymorphisms in Matrix metalloproteinases (MMPs) gene family and risk of Multiple sclerosis (MS). However, the results have been inconsistent and inconclusive. To resolve this issue, here we performed a systematic review and meta-analysis of the MMP-91562 C/T (rs3918242), MMP-3 (− 1612 5A/6A), and MMP-2 (− 1306 C/T) polymorphisms and susceptibility to MS.

Methods

We conducted a comprehensive systematic search in the major electronic database, including Scopus and PubMed to look up for relevant studies published before December 2019 that surveyed the association between the MMP-91562 C/T (rs3918242), MMP-3 (− 1612 5A/6A), and MMP-2 (− 1306 C/T) polymorphisms and susceptibility to MS. The level of association between the polymorphisms and susceptibility to MS in the polled analysis was determined by calculating the odds ratio (OR) and the corresponding 95% confidence interval (CI).

Results

We found 15 studies containing 2430 MS subjects and 2304 controls. A statistically significant association was observed in the all five comparisons of the MMP-91562 C/T polymorphism and MS risk as follows: dominant model (OR = 1.62, 95% CI = 1.03–2.53, P = 0.03), recessive model (OR = 2.69, 95% CI = 1.68–4.29, P < 0.001), allelic model (OR = 1.51, 95% CI = 1–2.28, P = 0.04), TT vs. CC model (OR = 3.20, 95% CI = 1.87–5.46, P < 0.001), and CT vs. CC model (OR = 1.53, 95% CI = 1.02–2.28, P = 0.04).

Conclusions

Our meta-analysis revealed significant association of MMP-9 (− 1562 C/T) Single-nucleotide polymorphism (SNP) with MS susceptibility that increased the disease risk.

Association Study of MMP-9 -1562C/T Gene Polymorphism with Susceptibility to Multiple Autoimmune Diseases: A Meta-analysis

BACKGROUND AND AIMS

Matrix metalloproteinase-9 (MMP-9) -1562 C/T gene polymorphism has been identified as a susceptible gene for multiple autoimmune diseases (ADs), but studies are inconsistent. The aim of this study was to assess the overall association between MMP-9 gene polymorphism and multiple ADs using a meta-analysis.

METHODS

Databases of Pubmed, Embase and Web of Science updated to March 1, 2016 were retrieved. Odds ratios (ORs) and corresponding 95% confidence intervals (95% CIs) as effect size were calculated by fixed-effect or random-effect model on the basis of heterogeneity.

RESULTS

A total of 12 relevant studies containing 2,034 cases and 1,861 controls were included in this meta-analysis. A significant association between MMP-9 -1562 T allele and AD susceptibility was found in the overall population (OR = 1.269, 95% CI = 1.114-1.444, p <0.001) and the Caucasian populations (OR = 1.222, 95% CI = 1.051-1.422, p = 0.009), but not in the Asian populations (OR = 1.337, 95% CI = 0.989-0.808, p = 0.059). Stratified by disease type, we detected a significant association in other ADs (OR = 1.501, 95% CI = 1.212-1.859, p <0.001), but not in patients with multiple sclerosis (OR = 1.150, 95% CI = 0.977-1.354, p = 0.092). No publication bias was detected in the current meta-analysis.

CONCLUSIONS

Data from the present study suggest that the MMP-9 -1562 C/T polymorphism may be associated with multiple AD susceptibility, especially in the Caucasian populations and other ADs. Further epidemiological studies with a larger sample size are needed to confirm these findings.

Multiple sclerosis: Association of gelatinase B/matrix metalloproteinase-9 with risk and clinical course the disease

BACKGROUND

Multiple sclerosis (MS) is an autoimmune disease characterized by inflammation and axonal degeneration of the central nervous system and a leading cause of disability in young adults. The matrix metalloproteinases in general and specially gelatinase B/metalloproteinase-9 (MMP-9) plays a role in the pathogenesis of multiple sclerosis.

OBJECTIVE

To investigate the presence of the MMP-9 -1562C/T polymorphism in a Portuguese population of MS patients and assess its impact in susceptibility and course of the disease. The relation of MMP-9 serum levels with the polymorphism and with clinical and therapeutic factors will also be assessed.

METHODS

Our study included 355 Caucasian individuals distributed as MS patients (n=169) and controls (n=186). Samples were genotyped for -1562C/T polymorphism by PCR-RFLP analysis. MMP-9 concentration in serum was analyzed using a commercially available enzyme-linked immunosorbent assay.

RESULTS

A significant increase in T-allele frequency was found in female MS patients, but not in the total patient population. No association between the presence of the polymorphism and disease progression was found. MMP-9 serum concentrations were increased in patients, and although not influenced by the -1562C/T polymorphism, were modified by INF-beta therapy.

CONCLUSION

Although we did not find an association of this polymorphism with disease susceptibility or prognosis, MMP-9 appears to be a good therapeutic response marker for multiple sclerosis.