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Bone Aluminium Deposition in Maintenance Dialysis Patients Treated with Aluminium-Free Dialysate: Role of Aluminium Hydroxide Consumption

Bone Aluminium Deposition in Maintenance Dialysis Patients Treated with Aluminium-Free Dialysate:... Postmortem iliac crest biopsies were performed on 16 uremic patients. 3 had been treated conservatively while 13 had been entered into a maintenance dialysis program. The dialysate was treated by reverse osmosis for more than 10 years, and the aluminium concentration was consistently below the detection limit of 0.15 mol/l.14 patients had been treated with aluminium hydroxide. Bone histomorphometry, aluminium labelling intensity, osteoid surface aluminium labelling extent (Al/OBI) and bone aluminium concentration were measured. 14 patients had significant bone aluminium deposition, including 2 who were not on dialysis of whom 1 had not received aluminium hydroxide. Bone aluminium concentration and labelling intensity were correlated to total aluminium hydroxide consumption (p < 0.001, p < 0.05) and present dose (p < 0.01, p < 0.01), while Al/OBI was not. The two patients with the highest aluminium concentrations had symptomatic osteomalacia, but 4 patients with significantly raised concentrations and mineralisation front labelling had secondary hyperparathyroidism. It is concluded that (1) bone aluminium deposition occurs despite the use of aluminium-free dialysate and is associated with total and present aluminium hydroxide consumption; (2) heavy aluminium deposition is associated with severe and symptomatic osteomalacia, but can also be observed in the presence of predominant hyperparathyroidism; (3) aluminium deposition can occur in the absence of treatment with dialysis or aluminium hydroxide; (4) bone aluminium concentration and labelling intensity are a better measure of bone deposition than Al/OBI. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nephron Karger

Bone Aluminium Deposition in Maintenance Dialysis Patients Treated with Aluminium-Free Dialysate: Role of Aluminium Hydroxide Consumption

Heaf, J.G.; Pødenphant, J.; Andersen, J.R.
Nephron , Volume 42 (3): 7 – Jan 1, 1986
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Publisher
Karger
Copyright
© 1986 S. Karger AG, Basel
ISSN
1660-8151
eISSN
2235-3186
DOI
10.1159/000183669
Publisher site
See Article on Publisher Site

Abstract

Postmortem iliac crest biopsies were performed on 16 uremic patients. 3 had been treated conservatively while 13 had been entered into a maintenance dialysis program. The dialysate was treated by reverse osmosis for more than 10 years, and the aluminium concentration was consistently below the detection limit of 0.15 mol/l.14 patients had been treated with aluminium hydroxide. Bone histomorphometry, aluminium labelling intensity, osteoid surface aluminium labelling extent (Al/OBI) and bone aluminium concentration were measured. 14 patients had significant bone aluminium deposition, including 2 who were not on dialysis of whom 1 had not received aluminium hydroxide. Bone aluminium concentration and labelling intensity were correlated to total aluminium hydroxide consumption (p < 0.001, p < 0.05) and present dose (p < 0.01, p < 0.01), while Al/OBI was not. The two patients with the highest aluminium concentrations had symptomatic osteomalacia, but 4 patients with significantly raised concentrations and mineralisation front labelling had secondary hyperparathyroidism. It is concluded that (1) bone aluminium deposition occurs despite the use of aluminium-free dialysate and is associated with total and present aluminium hydroxide consumption; (2) heavy aluminium deposition is associated with severe and symptomatic osteomalacia, but can also be observed in the presence of predominant hyperparathyroidism; (3) aluminium deposition can occur in the absence of treatment with dialysis or aluminium hydroxide; (4) bone aluminium concentration and labelling intensity are a better measure of bone deposition than Al/OBI.

Journal

Nephron – Karger

Published: Jan 1, 1986

Keywords: Aluminium; Renal osteodystrophy

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