RESUMO
<p><b>OBJECTIVE</b>To investigate the association between a -799C/T polymorphism in the promotor region of matrix metalloproteinase-8 (MMP-8) gene and instability of carotid plaque in Chinese Han population.</p><p><b>METHODS</b>A total of 451 acute infarction patients from the Department of Neurology of Taizhou Hospital were divided into carotid vulnerable plaque group and carotid stable plaque group according to the results of carotid B-mode ultrasonography. Serum MMP -8 level was measured by the means of enzyme-linked immunosorbent assay (ELISA). At the same time, the MMP-8 -799C/T polymorphism was determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method.</p><p><b>RESULTS</b>Serum level of MMP-8 in the carotid vulnerable plaque group was higher than that in the carotid stable plaque group (t= 2.894, P= 0.004). The genotype distribution of -799C/T polymorphism between the two groups was significantly different (Chi-square = 13.65, P= 0.000). Serum level of MMP-8 in patients with TT genotype was higher than that in patients with CC genotype (t= 3.141, P= 0.001).</p><p><b>CONCLUSION</b>The present study suggested that serum level of MMP-8 and the -799C/T polymorphism of MMP-8 gene are associated with carotid vulnerable plaque in Chinese Han population, and the T allele may be a predictor for the susceptibility of carotid vulnerable plaque.</p>
Assuntos
Idoso , Feminino , Humanos , Masculino , Sequência de Bases , Genótipo , Metaloproteinase 8 da Matriz , Genética , Dados de Sequência Molecular , Placa Aterosclerótica , Genética , Patologia , Polimorfismo Genético , Regiões Promotoras GenéticasRESUMO
<p><b>OBJECTIVE</b>To investigate the relationship of the polymorphism of SG13S114A/T in ALOX5AP gene with atherosclerotic cerebral infarction (ACI).</p><p><b>METHODS</b>By polymerase chain reaction and restriction fragment length polymorphism, polymorphism of SG13S114A/T in ALOX5AP gene in 412 cases with ACI and 368 non-ACI controls were analyzed.</p><p><b>RESULT</b>There were no statistically significant differences in the ALOX5AP gene SG13S114 AA genotype and A allele frequencies between ACI group and control group (P>0.05).</p><p><b>CONCLUSION</b>The results do not support genotype SG13S114 A allele as the risk gene for ACI.control group.</p>