Abstract
Vascular endothelial growth factor (VEGF) plays a pivotal role in the capillary endothelial cell growth and proliferation and has known effects on glomerular microvascular permeability. Because certain VEGF polymorphisms are correlated with alterations in VEGF expression, we hypothesized that VEGF genetic polymorphisms may affect the renal survival and progression of primary IgA nephropathy. The study population consisted of 195 biopsy-proven IgA nephropathy patients at our center between 1984 and 2004. VEGF genotype polymorphism at -2578 positions was determined from peripheral blood leukocytes DNA using polymerase chain reaction methodologies. The primary end point was kidney survival as measured by the time interval from renal biopsy to end-stage renal disease or the requirement of renal replacement therapy. In total, we studied 119 women (61%) and 76 men (39%), with a mean age of 35 +/- 10 yr at the time of renal biopsy. Observed genotype frequency was 55.6%, 38.8%, and 5.1% for CC, CA, and AA genotypes respectively. Baseline characteristics did not differ significantly between three genotype groups for patient age, sex, prevalence of hypertension, degree of proteinuria, initial serum creatinine concentration, and the histo...Continue Reading
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