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Comparative Study
. 2018 Oct 29;18(1):202.
doi: 10.1186/s12872-018-0931-0.

Serum matrix metalloproteinase-9 is a valuable biomarker for identification of abdominal and thoracic aortic aneurysm: a case-control study

Tan Li  1 , Bo Jiang  2 , Xuan Li  2 , Hai-Yang Sun  1 , Xin-Tong Li  2 , Jing-Jing Jing  3 , Jun Yang  4
Affiliations
Comparative Study

Serum matrix metalloproteinase-9 is a valuable biomarker for identification of abdominal and thoracic aortic aneurysm: a case-control study

Tan Li et al. BMC Cardiovasc Disord. .

Abstract

Background: Matrix metalloproteinase-9 (MMP9) has been reported to play a key role in the pathogenesis of aortic aneurysm. However, few studies have assessed serum MMP9 levels in both abdominal aortic aneurysm (AAA) and thoracic aortic aneurysm (TAA). In this study, we investigated the serum levels of MMP9 in aortic aneurysm to evaluate its predictive and diagnostic efficacy for AAA and TAA, and explored the association of MMP9 with circulating laboratory markers.

Methods: A total of 296 subjects were enrolled, including 105 AAA patients, 79 TAA patients and 112 healthy controls. The levels of serum MMP9 were detected by enzyme-linked immunosorbent assay (ELISA).

Results: Compared to control group, both AAA and TAA patients had higher serum MMP9 levels in the overall comparison and subgroup analysis based on subjects aged<65 years, either male or female, hypertension, non-diabetes and non-hyperlipidemia (all P<0.05). Moreover, MMP9 levels were significantly higher in TAA group than those in AAA group in the total comparison, and this discrepancy was also found in the non-diabetes, non-hyperlipidemia and aortic diameter ≥ 5.5 cm subgroup analysis. Serum MMP9 levels were influenced by age and hypertension. There was a positive association of serum MMP9 with CRP (r = 0.33, P < 0.001) and Hcy (r = 0.199, P = 0.033). Multiple logistic analyses showed that serum MMP9 was an independent risk factor for AAA and TAA. Based on receiver operating characteristic (ROC) analysis, the area under the curve (AUC) of MMP9 for predicting TAA was 0.83 with 70% sensitivity and 91% specificity, while the AUC of MMP9 to detect AAA was 0.69 and the sensitivity and specificity were 50% and 88%.

Conclusions: Serum MMP9 was closely related to the existence of aortic aneurysms and could be a valuable marker for the discrimination of aortic aneurysm, especially for TAA.

Keywords: Abdominal aortic aneurysm; C- reactive protein; Matrix metalloproteinase-9; Thoracic aortic aneurysm.

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Conflict of interest statement

Ethics approval and consent to participate

This study was approved by the Ethics Committee of the First Hospital of China Medical University. And informed consent was obtained from each subject.

Consent for publication

Consent for publication was obtained from each subject.

Competing interests

All authors declare that they have no competing interests.

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Figures

Fig. 1
Fig. 1
Scatter plots for the association of serum MMP9 with CRP(a) and Hcy(b)
Fig. 2
Fig. 2
ROC curve for serum MMP9 levels to predict AAA (a) and TAA (b)
See this image and copyright information in PMC

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