Evaluation of collagenase-3 matrix metalloproteinase-13 gene-associated polymorphisms 11A/12A and -77A/G and its associated alleles with and without periodontitis

Evaluation of matrix metalloproteinase-1, -2, -3, -7, and -13 gene polymorphisms in patients with chronic periodontitis and healthy controls

OBJECTIVES

The current study aimed to investigate the association of matrix metalloproteinase- (MMP-) 1, -2, -3, -7, and -13 gene polymorphisms with chronic periodontitis (CP) in an Iranian population.

MATERIALS AND METHODS

In this case-control study, 87 subjects with CP and 89 periodontally healthy subjects were allocated to case and control groups, respectively. Subjects' venous blood samples (5 cc) were collected, and DNA extraction was performed. A spectrophotometer was utilized to assess the concentration of extracted DNAs. The desired gene polymorphisms were examined using restriction fragment length polymorphism polymerase chain reaction (RFLP-PCR) followed by electrophoresis. Statistical analyses were done using the Pearson Chi-Square test, odds ratio, and t-Test using SPSS Version 28.

RESULTS

The MMP-1 (-1607 1G/2G) rs1799750, MMP-3 (-1171 5A/6A) rs3025058, and MMP-7 (-181 A/G) rs11568818 gene polymorphisms significantly differed between case and control groups (PV = 0.019, 0.007, and 0.028, respectively). In contrast, the gene polymorphisms of MMP-2 (-1306 C/T) rs243865 and MMP-13 (-77 A/G) rs2252070 did not make a significant difference. Regarding allele frequencies, the presence of the 2G allele in the MMP-1 (-1607) rs1799750 genotype increased the CP susceptibility significantly, while subjects with the 6A allele in their MMP-3 (-1171) rs3025058 genotype showed significantly lower susceptibility to CP (PV = 0.008 and < 0.001, respectively).

CONCLUSION

In the studied population, gene polymorphisms in the DNA sequences of MMP-1 (-1607 1G/2G) rs1799750, MMP-3 (-1171 5A/6A) rs3025058, and MMP-7 (-181 A/G) rs11568818 may have impacts on CP incidence.

CLINICAL RELEVANCE

Clinicians should be cautious about the association between MMP-1, MMP-3, and MMP-7 gene polymorphisms and the incidence of chronic periodontitis during periodontal treatment planning.

Role of MMP-13-77A/G polymorphism in HIV-associated neurocognitive disorders patients

Many diseases including HIV-Associated Neurocognitive Disorder (HAND) are impacted by matrix metalloproteinases (MMPs). MMP-13 play a role to cleave the collagen. MMP-13 contributes to peripheral neuropathy and induces unmyelinated axon degeneration. MMP-13-77A/G polymorphism has been associated to a lower level of MMP-13. MMP-13 have been linked to increased expression in a number of diseases including neurological disease. Hence we analyzed the effect of MMP-13-77A/G polymorphism in pateints with and without HAND. The PCR-Restriction fragment length polymorphism approach was used to genotype MMP-13-77A/G polymorphism. The MMP-13-77AG genotype was shown to be more prevalent in HAND patients than in controls and showed a risk for severe HAND (44.4% vs. 34.8%, P = 0.16, OR = 1.79). When compared to healthy controls, the MMP-13-77AG genotype was found to be prevalent in HAND patients (44.4 %vs. 38.2%, P = 0.66, OR = 1.26). MMP-13-77AG genotype was overrepresented (51.5% vs. 38.2%, OR = 1.70, P = 0.29) in HAND patients who had advanced HIV disease. In without HAND patients, the MMP-13-77AG genotype was found be lessor in advanced stage of HIV disease when compared with healthy controls and it was associated with a reduced risk for advancement in disease (38.2% vs. 11.82%, P = 0.03, OR = 0.18). Smokers were more likely to have the MMP-13-77AG genotype than non-smokers, indicating an elevated risk of HAND severity (60.0% vs. 40.0%, P = 0.50, OR = 2.29, 95%). In patients with and without HAND, alcohol intake enhanced the risk for developing HAND and its severity when the MMP-13-77GG genotype was present (P = 0.78, OR = 2.10, P = 0.78, OR = 2.10). In conclusion, Individuals with alcohol usage and the MMP-13-77GG genotype may have additive effect on HAND development and its severity. Individuals of without HAND and MMP-13-77AG genotype showed reduced risk for advancement of HIV disease.