P1590AMORPHOUS CPP AND CRYSTAL CPP OF HEMODIALYSIS PATIENTS

Abstract

Abstract Background and Aims Serum calciprotein particles (CPP) are increased in CKD patients and correlated with vascular stiffness and calcification. CPPs are can be distinguished amorphous and crystal CPPs. Crystal CPPs are non-incubated CPPs and amorphous CPPs are the difference(Δ) incubated CPPs and non-incubated CPPs. In this study, we evaluated amorphous CPPs and crystal CPPs in hemodialysis (HD) patients. Method 183 end stage renal disease patients undergoing HD (57.6% men, median age 71, dialysis period; 98.4 ± 87 months) were treated in single hospital. Serum CPP levels were measured by the gel filtration method. Incubated CPPs were incubated in 24°C, 24hous then were measured similarly. We assessed the association of serum calcium (Ca), phosphorus (P), intact-PTH, FGF21, LDL-cholesterol, CRP with CPP. Results In multivariate analysis, P remained significant independent factors for the non-incubated CPP levels. Ca, P remained significant independent factors for the incubated CPP levels. P remained significant independent factors for the Δ CPP levels. The association of ΔCPP levels / the incubated CPP levels with clinical variables are examined. In multivariate analysis, hemoglobin remained significant independent factors. Conclusion Amorphous CPPs and crystal CPPs could each be a prognostic factors. Figure: Association of ΔCPP levels / incubated CPP levels with clinical variables. Univariate Multivariate