Elevation of blood (1 -> 3)-beta-D-glucan concentrations in hemodialysis patients

Determination of the blood (1-->3)-beta -aglucan (beta -DG) concentration i s a sensitive marker to detect the presence of deep mycosis and fungal infe ctions. Although cellulose material is known to contain beta -DG, the influ ence of a cellulose dialyzer membrane on the blood beta -DG level remains t o be elucidated. In this study, we determined the plasma beta -DG levels in dialysis outpatients using either a modified regenerated cellulose (MRC) o r a synthetic polysulfone (PS) membrane for more than 3 months. Plasma beta -DG levels were extremely high in patients using the MRC (2,778 +/- 549 pg /ml, n = 9) but not the PS membrane (18.8 +/- 3.7 pg/ml, n = 8) compared to normal ranges (<20 pg/ml). A single dialysis session using the MRC membran e further increased blood <beta>-DG values to 5,561 +/- 722 pg/ml (p < 0.01 ). After changing the membranes from MRC to PS, the blood <beta>-DG levels gradually decreased and reached 29.6 +/- 6.0 pg/ml at 6 months. In contrast , the PS membrane did not affect plasma beta -DG levels after a single dial ysis session (16.0 +/- 3.9 pg/ml) or 4 months later (24.0 +/- 4.9 pg/ml). T hese findings suggested that a cellulose membrane could influence the measu rement of blood beta -DG concentrations in the long-term. Careful assessmen t is required to diagnose the presence of fungal infection in HD patients u sing a cellulose membane. Copyright (C) 2001 S. Karger AG, Basel.