RESUMO
OBJECTIVES: Paraoxonase is a high density lipoprotein (HDL)-associated enzyme, which has been implicated in preventing low density lipoprotein-cholesterol (LDL-C) from oxidation. The human paraoxonase gene is codominantly expressed as allele A and B. The A allele codes for glutamine (A subtype) and the B allele for arginine (B subtype) at codon 192 of the paraoxonase enzyme. This genetic polymorphism divides the enzyme into high and low activity form. It has been believed that this difference of specific activity might change the metabolism of cholesterol and the prevalence of coronary artery disease. The present study investigated the association among the paraoxonase gene polymorphism and the level of plasma lipoprotein and coronary artery disease. METHODS: The 416 subjects who have undergone coronary angiography in SNUH were recruited. The patients (n=251) had >50% stenosis of at least one of the major coronary arteries. To identify the genotype of paraoxonase, we amplified the target region in the paraoxonase gene by PCR ( polymerase chain reaction) and electrophoresed the products. RESULTS: There was no difference between the two groups in the allele frequency (A : B = 0.41 : 0.59 in patients, A : B = 0.37 : 0.63 in controls; p=0.21) or in the genotype frequency (AA:AB:BB= 45:116:90 in patients, AA:AB:BB=22:77:66 in controls; p=0.41). There was no association of the paraoxonase genotype with serum lipoprotein level and acute coronary syndrome in this study. The B allele was not an independent risk factor for coronary artery disease in this study. CONCLUSION: The paraoxonase gene 192 polymorphism was not an independent risk factor for coronary artery disease in this study.
Assuntos
Humanos , Síndrome Coronariana Aguda , Alelos , Arginina , Arildialquilfosfatase , Colesterol , Códon , Constrição Patológica , Angiografia Coronária , Doença da Artéria Coronariana , Vasos Coronários , Frequência do Gene , Genótipo , Glutamina , Lipoproteínas , Metabolismo , Plasma , Reação em Cadeia da Polimerase , Polimorfismo Genético , Prevalência , Fatores de RiscoRESUMO
Infective endocarditis by Hemophilus species is very rare:there are only 22 reported-cases of Hemophilus paraphrophilus endocarditis. We report a case of Hemophilus paraphrophilus endocarditis in a middle-aged woman with cerebral embolism and hemorrhage.