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Published on: February 23, 2020
Methylation of MMP2, TIMP2, MMP9 and TIMP1 in abdominal aortic aneurysm
Objectives:
Abdominal aortic aneurysm (AAA) and its complications are among the most serious cardiovascular diseases and its occurrence has risen sharply in recent years. The aim of this pilot study is to explore the relationship between the methylation of matrix metalloproteinases and tissue inhibitors of the metalloproteinases genes' promoter region, and abdominal aortic aneurysm (AAA) through the detection of the methylation status of MMP2, TIMP2, TIMP1, and MMP9 genes in peripheral blood.
Methods:
The study included 43 males with verified AAA (case group) and 34 healthy males (control group). The methylation status of the genes' promoter region was detected by methylation-specific polymerase chain reaction (MS-PCR).
Results:
In adominal aortic aneurysm patients, the methylation ratio of MMP2 gene was positive in 9.3 % (4 cases), 2.3 % (1 case) had methylated TIMP2 gene, 7.0 % (3 cases) had methylated TIMP1 gene, while the methylation ratio of MMP9 gene was positive in 93.0 % (40 cases). In the control group, MMP2 gene was found to be methylated in 5.9 % (2 cases), 5.9 % of cases had methylated TIMP2 and TIMP1 genes (2 cases), and MMP9 gene was found to be methylated in 91.2 % (31 cases).
Conclusion:
In our pilot study, we found no association between DNA methylation of gelatinases and their tissue inhibitors, and the development of an abdominal aortic aneurysm (Tab. 2, Fig. 1, Ref. 27).
Insights
This pilot study investigated DNA methylation in matrix metalloproteinases and tissue inhibitors in abdominal aortic aneurysm (AAA) patients. No association was found between gene promoter methylation and AAA development.
Area of Science:
- Cardiovascular Diseases
- Molecular Biology
- Genetics
Background:
- Abdominal aortic aneurysm (AAA) is a serious cardiovascular condition with increasing incidence.
- Matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs) play roles in vascular remodeling.
- Aberrant DNA methylation of MMP and TIMP genes is implicated in various diseases.
Purpose of the Study:
- To explore the relationship between DNA methylation in the promoter regions of MMP2, TIMP2, TIMP1, and MMP9 genes and the development of AAA.
- To assess the methylation status of these key genes in peripheral blood of AAA patients and healthy controls.
Main Methods:
- A case-control study involving 43 males with AAA and 34 healthy males.
- Methylation-specific polymerase chain reaction (MS-PCR) was used to detect promoter methylation status of MMP2, TIMP2, TIMP1, and MMP9 genes.
Main Results:
- No significant differences in methylation patterns were observed for MMP2, TIMP2, and TIMP1 between AAA patients and controls.
- High methylation ratios for MMP9 were found in both AAA patients (93.0%) and controls (91.2%), indicating no specific association with AAA.
Conclusions:
- This pilot study found no association between the DNA methylation of MMP2, TIMP2, TIMP1, and MMP9 genes and the development of abdominal aortic aneurysm.
- Further research with larger cohorts may be warranted to fully elucidate the role of gene methylation in AAA pathogenesis.
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