Impact of matrix metalloproteinase-8 gene variations on the risk of thoracic aortic dissection in a Chinese Han population.
The importance of matrix metalloproteinase 8 (MMP8) expression during the progression of thoracic aortic dissection (TAD) has been recently emphasized. Genetic variations that affect proteinase expression or activity might contribute to the pathogenesis of TAD. In this study, we investigated whether the MMP8 C-799T genotype is associated with TAD. The frequency distributions of the MMP8 C-799T polymorphism were determined by direct sequencing. Associations between the polymorphism and disease progression in TAD were investigated. The level of plasma and tissue MMP8 was measured by enzyme-linked immunosorbent assay and western blotting. The MMP8 C-799T polymorphism was significantly associated with susceptibility to disease progression in TAD patients (n = 152) than in controls (n = 147) (P = 0.004, OR = 0.62, 95 % CI 0.45-0.86). The TT homozygotes had a significantly higher risk of TAD compared to C allele carriers in a logistic regression model, after adjustment for the conventional risk factors for TAD. The plasma MMP8 concentration was significantly higher in TAD patients compared to control patients (P < 0.05). TT genotypes had increased MMP8 levels compared to CC and CT genotype carriers in both TAD and control subjects (P < 0.05). The C-799T polymorphism in the MMP8 promoter is part of the genetic variation underlying the susceptibility of individuals to the progression of TAD.
Department of Cardiology, Cardiovascular Research Institute, Northern Hospital, 83 Wenhua Road, Shenyang, 110840, Liaoning, China.
Xiao-Zeng
XZ
Wang
Xiao-Mo
XM
Du
Quan-Min
QM
Jing
Xing-Xing
XX
Li
Ruo-Xi
RX
Gu
Jiao
J
Wang
Ya-Ling
YL
Han
D000784:Aortic Dissection / Q000201:enzymology / Q000235:genetics*; D001013:Aorta, Thoracic / Q000201:enzymology / Q000473:pathology*; D044466:Asian People / Q000235:genetics*; D015153:Blotting, Western; D016022:Case-Control Studies; D003710:Demography; D004797:Enzyme-Linked Immunosorbent Assay; D005006:Ethnicity / Q000235:genetics*; D005260:Female; D005787:Gene Frequency / Q000235:genetics; D020022:Genetic Predisposition to Disease; D006801:Humans; D008297:Male; D020784:Matrix Metalloproteinase 8 / Q000235:genetics*; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D012307:Risk Factors
C488762:MMP8 protein, human; D020784:Matrix Metalloproteinase 8