TLR4 and MMP2 polymorphisms and their associations with cardiovascular risk factors in susceptibility to aortic aneurysmal diseases

Tan Li; Jingjing Jing; Liping Sun; Bo Jiang; Shijie Xin; Jun Yang; Yuan Yuan

doi:10.1042/BSR20181591

TLR4 and MMP2 polymorphisms and their associations with cardiovascular risk factors in susceptibility to aortic aneurysmal diseases

Biosci Rep. 2019 Jan 8;39(1):BSR20181591. doi: 10.1042/BSR20181591. Print 2019 Jan 31.

Authors

Tan Li^{1

2}, Jingjing Jing¹, Liping Sun¹, Bo Jiang³, Shijie Xin³, Jun Yang², Yuan Yuan⁴

Affiliations

¹ Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang 110001, China.
² Department of Cardiovascular Ultrasound, the First Hospital of China Medical University, Shenyang 110001, China.
³ Department of Vascular and Thyroid Surgery, the First Hospital of China Medical University, Shenyang 110001, China.
⁴ Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang 110001, China yuanyuan@cmu.edu.cn.

Abstract

Background: Toll-like receptor 4 (TLR4) and matrix metalloproteinase 2 (MMP2) play important roles in aortic pathophysiology. We aimed to evaluate the contribution of TLR4 and MMP2 polymorphisms individually and complex interactions between gene and risk factors in susceptibility to aortic aneurysm (AA) and its subtypes. Methods: KASP method was adopted to detect TLR4rs11536889, rs1927914 and MMP2rs2285053 polymorphisms in 498 controls and 472 AA patients, including 212 abdominal AA (AAA) and 216 thoracic AA (TAA). Results: In the overall analysis, MMP2rs2285053 TC genotype was correlated with TAA risk (P = 0.047, OR = 1.487). Stratified analysis revealed an increased AA risk in males with TLR4rs1927914 TC genotype, while MMP2rs2285053 TC conferred an elevated AA risk in the subjects ≤60 years, and its TC genotype and dominant model were associated with TAA in the subjects ≤60 year. The interaction between TLR4rs1927914 and MMP2rs2285053 was associated with AAA risk (P_interaction = 0.028, OR = 2.913). Furthermore, significant interaction between TLR4rs11536889 and dyslipidemia was observed for TAA risk, while TLR4rs1927914 could interact with hypertension and diabetes to increase the risk of AA or its subtypes. Two-way interaction effect of TLR4rs1927914 and MMP2rs2285053 was enhanced by diabetes or dyslipidemia. Conclusion: TLR4 and MMP2 polymorphisms and their complex interactions with cardiovascular risk factors contributed to aortic aneurysmal diseases.

Keywords: aortic aneurysm; matrix metalloproteinase 2; polymorphism; toll-like receptor 4.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Aorta / pathology
Aortic Aneurysm, Abdominal / genetics*
Aortic Aneurysm, Thoracic / genetics*
Cardiovascular Diseases / genetics*
Female
Genetic Predisposition to Disease / genetics*
Genotype
Humans
Male
Matrix Metalloproteinase 2 / genetics*
Middle Aged
Polymorphism, Genetic / genetics*
Risk Factors
Toll-Like Receptor 4 / genetics*

Substances

TLR4 protein, human
Toll-Like Receptor 4
MMP2 protein, human
Matrix Metalloproteinase 2