S-470 Relationships between blood pressure and clinico-pathological findings in IgA nephropathy = S-470 Relationships between blood pressure and clinico-pathological findings in IgA nephropathy

다국어 초록 (Multilingual Abstract)

Objective: Several factors contribute to the development of hypertension in patients with IgA nephropathy (IgAN). This study was conducted to find the relationships between baseline blood pressure (BP) and clinico-pathological findings in patients with IgAN and normal renal function. Design and Method: Clinico-pathological findings were analyzed in a total of 163 patients with IgAN and serum creatinine ￡ 1.1 mg/dL from The Kyung-Hee Cohort of Glomerulonephritis. The glomerular surface area (GSA) was determined using imaging analysis software. The serum and urine angiotensinogen (AGT) concentrations were measured using human ELISA kits.?Results: Mean serum creatinine concentration was 0.86 (0.5~1.1) mg/dL. Systolic BP was ≥ 130 mmHg in 72 patients (44%) and ≥ 140 mmHg in 42 (26%). Patients with systolic BP ≥ 130 mmHg as compared with those ＜130 mmHg had higher GSA and tubulointerstitial fibrosis and showed worse follow-up clinical findings: higher concentrations of serum creatinine, larger amount of proteinuria and lower levels of GFR. Systolic BP was positively correlated with age, baseline and follow-up proteinuria, serum uric acid concentrations and IgM deposit and negatively with follow-up GFR and the slope of change in 1/serum creatinine for 2 years, while it has no significant relationships with serum and urine AGT and 24 hour urinary sodium excretion. Conclusions: This study showed that systolic BP was associated with renal progression and pathological findings, glomerulomegaly and tubulointerstitial fibrosis, in patients with IgAN.