PMID: 6609268Dec 1, 1983

Symptoms and activation of granulocytes and complement with two dialysis membranes

Kidney International
P T IvanovichD E Hammerschmidt


Complement (C) activation, neutropenia, and mild pulmonary dysfunction attend hemodialysis (HD) with cellophane [for example, cuprophan (Cu)] membranes. While usually asymptomatic, these phenomena may cause distress in patients with cardiopulmonary disease, and "start-up" symptoms of HD might be mediated by C-stimulated granulocytes (PMNs). Cellulose acetate (CA) hemodialysis membranes have been devised and claimed more blood compatible than Cu. In a blinded series of HD patients, pruritus, fatigue, and sense of well-being were each scored statistically more favorably by the patients during HD with CA than during HD with Cu (P less than 0.05). Postulating that less C activation might underlie the benefit, we showed that neutropenia was less severe with CA (nadir 77.6% of initial count, +/- 4 SEM) than with Cu (38.3% +/- 2.9; P less than 0.01). In vitro, incubation of CA membranes with plasma led to less C3 conversion (20% vs. 40%), less PMN aggregating activity (5.9 ZAP units vs. 36.3) and less decrement in CH50 (6.5% vs. 22%) than like incubations of Cu. C activation was also less potent in vivo: During HD plasma C3a rose from a mean 401 ng/ml to a peak 6,325 in patients on Cu dialyzers, but from 426 to only 3,637 in patients ...Continue Reading


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