Abstract
Urokinase plasminogen activator (uPA) plays important physiological and pathological roles in fibrinolysis, cancer metastasis, and atherosclerosis. One study suggested that uPA also has a major role in cholesterol biosynthesis in humans via its receptor uPAR. Thus, we investigated the associations of functional uPA polymorphism (plasminogen activator, urokinase; PLAU Pro141Leu, rs2227564) with serum lipid profiles in a Japanese cohort. The study included 5152 participants (1465 male, 3687 female; age range, 35–69years) of the Daiko Study, a part of the Japan Multi-Institutional Collaborative Cohort Study (J-MICC Study). Subjects were enrolled at the Daiko Medical Center from June 2008 to May 2010. Low-density lipoprotein cholesterol (LDL-C) and non-HDL-C (subtraction of high-density lipoprotein cholesterol from total cholesterol) in fasting blood of participants were each classified into two groups, < or ≥140mg/dL, and < or ≥170mg/dL, respectively. Genotype frequencies of PLAU Pro141Leu (rs2227564) were 59.1% for ProPro, 35.6% for ProLeu, and 5.3% for LeuLeu, and were in Hardy–Weinberg equilibrium (p=0.789). The allele frequencies were 0.769 for Pro and 0.231 for Leu. The multivariate-adjusted odd ratios (ORs) and 95% confidence intervals (CIs) for high LDL-C and non-HDL-C were 1.11 (95%CI; 1.00–1.23) and 1.16 (95%CI; 1.03–1.30) for those with Leu allele relative to ProPro. This study suggested that PLAU Pro141Leu (rs2227564) is significantly associated with serum lipid levels in a Japanese population.
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