Influence of various hemodialysis membranes on the plasma (1→3)-β-D-glucan level

Background. Recently. invasive fungal infections have increased significantly because of the growing number of immunocompromised hosts. The measurement of plasma (1 -->3)-beta -D-glucan has been proposed as a useful diagnostic tool for deep mycosis. In this study. we analyzed the alteration of the plasma (1 -->3)-beta -D-glucan concentration by using different kinds of hemodialvsis (HD) membranes in end-stage renal disease (ESRD) patients and estimated its half-life. Methods. Twenty-seven patients with ESRD without known fungal infections (with a median age of 66 years old) were enrolled in this study. Cellulose triacetate (CTA) membrane, cellulose (Cu) membrane, and polymethyl methacrylate (PMMA) membrane were used in three consecutive initiations of HD and plasma (1 -->3)-beta -D-glucan concentration was measured before and after each HD session. Results. The level did not change between before and after HD when CTA and PMMA membranes were used. In contrast, the plasma (1 -->3)-beta -D-glucan level increased greatly after HD using the Cu membrane (from 9.4 to 332 pg/mL in median). Hypothesizing that the plasma (1 -->3)-beta -D-glucan level declines exponentially. its median half-life is estimated at 20 hours, which is not affected by hepatic or renal function. Conclusions. Because the plasma (1 -->3)-beta -D-glucan level increases dramatically after HD using the Cu membrane. dialyzers with Cu membrane should be avoided for HD in patients with suspected deep mycosis. The measurement of plasma (1 -->3)-beta -D-glucan is also useful For the patients with hepatic or renal Failure.