Background: The increased risk of CVD in adults with SLE is well established but studies in

JSLE have been conflicting and more data is needed. Recent adult studies have suggested that an abnormal adipokine profile in SLE may predispose individuals to CVD. Methods: Data was collected BAY 80-6946 chemical structure to establish disease duration, disease activity, medication use, activity levels and demographic data. Vascular phenotype was established using carotid intima media thickness (cIMT) and pulse wave velocity (PWV). Serum leptin and adiponectin levels were determined by commercial quantitative sandwich ELISA kits from R&D systems. Results: 25 children and young adults with JSLE were recruited to the study. When compared with data from healthy controls, cIMT was significantly higher (0.45 vs 0.37 mm, P < 0.0001). Leptin levels click here were 16.52 (8.27–27.27) ng/mL in the JSLE group and 7.56 (0.99–16.7) ng/mL in controls, (P = 0.0238). Significant correlations were found between leptin levels and systolic

BP (r2 = 0.482, P = 0.0172), PWV (r2 = 0.433, P = 0.039), serum LDL (r2 = 0.585, P = 0.0137) and BMI centiles (r2 = 0.540, P = 0.0078) in the JSLE group. The lower leptin quartile group had a cIMT of 0.44 ± 0.03 mm increasing to 0.47 ± 0.06 mm in the higher quartile group, P = 0.0004. Adiponectin levels were 14.2 ± 9.5 μg/mL in the JSLE group and 12.4 ± 4.4 μg/mL in controls, (P = 0.49). There was an increase in cIMT and PWV across adiponectin quartiles (from 0.45 ± 0.05 to 0.43 ± 0.04 and 5.02 ± 0.58 to 5.45 ± 0.97 respectively), although this was not statistically significant for PWV. Conclusion: Our findings are in agreement with adult and the relationship between serum adipokines and cIMT suggests that leptin could be used as a novel biomarker for CV risk in JSLE. 178 RELATIONSHIP BETWEEN TIMED URINE AND SPOT URINE COLLECTIONS FOR MEASUREMENT OF PHOSPHATE EXCRETION SJ TAN1,2, MMX CAI1,2, KJ KELYNACK1, B WIGG1, E PEDAGOGOS1, Casein kinase 1 ER SMITH1,3, SG HOLT1,2, TD HEWITSON1,2, ND TOUSSAINT1,2 1Department of Nephrology, The Royal Melbourne Hospital, Parkville, Victoria; 2Department of Medicine (RMH), The University of Melbourne, Parkville, Victoria;

3Monash University, Clayton, Victoria, Australia Aim: To determine the relationship between spot urine phosphate : creatinine ratio (uPiCr) and total urinary phosphate excretion (UPE) in chronic kidney disease (CKD) patients. Background: Twenty-four hour UPE reflects intestinal phosphate absorption in steady state and can be used to evaluate effects of phosphate-lowering interventions. UPE may be more informative than serum phosphate (sPi) in assessing phosphate homeostasis. However, timed urine collections are cumbersome and prone to inadequate collection. Spot uPiCr assessment may be a useful, simple surrogate for UPE, but is yet to be systematically evaluated in CKD. Methods: Blood samples, spot and 24-hour urine were collected from patients with CKD (Stages 1–5).